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Office of Scientific and Technical Information
NLE Websites -- All DOE Office Websites (Extended Search)
Visitors Visitors /community-environment/visitors/_assets/images/icon-visitors-orange-paper-plane.jpg Visitors Coming to Los Alamos? Need badging information? Need local resources or housing? This is the place. Badge Office» Education Office Housing» Living in Los Alamos» Bradbury Science Museum» LOOK INTO LANL - highlights of our science, people, technologies close Scholarship fund changes lives Life-changing experience: springboard to a career in exercise science and physical therapy. READ MORE Jacob Leyba, recipient of the Los Alamos Employees' Scholarship Fund Domenici scholarship Jacob Leyba, recipient of the Senator Pete Domenici Endowed Scholarship Fund. Contact Us Community Programs Manager Carole Rutten Community Programs Office (505) 665-4400 Email More Like This
Visitors Visitors Visitors MUSEUM HOURS Tuesday through Saturday, 10-5 Sunday and Monday. 1-5 Open: Federal Holidays Closed: Thanksgiving, Christmas, New Years Day Admission is free. Planning your visit Most visitors spend between one and a half and two hours at the Museum, although many mention they wish they had allowed more time. The exhibits and science demonstrations are geared for school-age children through adults. Accessibility The building is accessible to those with special needs, and assisted listening devices or captions are available for most films. Camera policy Bring your camera - we allow photographs and videos inside the Museum for personal use. Media If you're with the media, please contact the Laboratory's Communications Office for prior approval and to make arrangements.
Medical/Repatriation/Evacuation Program (ACE Insurance) Under the exchange visitor program, the United States Department of State
E-Print Network (OSTI)
Medical/Repatriation/Evacuation Program (ACE Insurance) Under the exchange visitor program, the United States Department of State requires exchange visitors to have coverage for medical benefits, repatriation of remains in the case of death, and expenses associated with medical evacuation. Coverage by ACE
For Visitors
For Visitors For Visitors For Visitors A repository for images for those visiting Los Alamos and Northern New Mexico. Click thumbnails to enlarge. Photos arranged by most recent first, horizontal formats before vertical. See Flickr for more sizes and details. Northern New Mexico Northern New Mexico Summer lightning storms in Northern New Mexico Summer lightning storms in Northern New Mexico The Ancient Ladder The Ancient Ladder Tent Rocks, New Mexico Tent Rocks, New Mexico Albuquerque Balloon Fiesta Albuquerque Balloon Fiesta El Santuario de Chimayo El Santuario de Chimayo Sandia peak Sandia peak Valles Caldera in New Mexico Valles Caldera in New Mexico Cathedral Basilica of St-Francis in Santa Fe Cathedral Basilica of St-Francis in Santa Fe Christmas Lights Christmas Lights Santa Fe - Palace of the Governors
Document Imaging | Department of Energy
Energy.gov (U.S. Department of Energy (DOE)) Indexed Site
Document Imaging Document Imaging Employee Services Cafeterias Conferencing and Special Events Copy Services Document Imaging Exchange Visitors Program Facility Operations Food...
ALS Visitors
Energy. March 2010 ALS Project Manager Steve Rossi hosted a group of visitors from Kazakhstan on Friday, March 5. The visitors, including a representative from the Kazakhstan...
NIST Visitor Information Homepage
Science Conference Proceedings (OSTI)
... NIST Tours; Other Useful Links; DC Convention and Visitors Bureau; Montgomery County Conference and Visitors Bureau; ...
ALS Visitors ALS Visitors ALS Visitors Print Wednesday, 29 July 2009 00:00 ALS staff members host a variety of scientific, educational, government, and community-related tours each month. November 2013 poneman U.S. Deputy Secretary of Energy Daniel Poneman visited Berkeley Lab on Friday, Nov. 15, during a brief stay in the Bay Area. Glenn Mara of the University of California Office of the President and Aundra Richards of the DOE Berkeley Site Office joined Deputy Laboratory Director Horst Simon's welcome. They updated Poneman on the lab's future initiatives and current capital projects and heard briefings on cyber security, computing, and the Joint BioEnergy Institute. As second-in-command at DOE, Poneman is responsible for assisting the Secretary of Energy in the management and operations of the agency and acting on his behalf when necessary.During his tour of the ALS, Poneman (right) spoke with Ken Goldberg (Materials Sciences Division) at the CXRO beamline.
ALS Visitors Print ALS Visitors Print ALS staff members host a variety of scientific, educational, government, and community-related tours each month. November 2013 poneman U.S. Deputy Secretary of Energy Daniel Poneman visited Berkeley Lab on Friday, Nov. 15, during a brief stay in the Bay Area. Glenn Mara of the University of California Office of the President and Aundra Richards of the DOE Berkeley Site Office joined Deputy Laboratory Director Horst Simon's welcome. They updated Poneman on the lab's future initiatives and current capital projects and heard briefings on cyber security, computing, and the Joint BioEnergy Institute. As second-in-command at DOE, Poneman is responsible for assisting the Secretary of Energy in the management and operations of the agency and acting on his behalf when necessary.During his tour of the ALS, Poneman (right) spoke with Ken Goldberg (Materials Sciences Division) at the CXRO beamline.
Temperature profile of the infrared image Heat exchange between
T Temperature profile of the infrared image Heat exchange between atmosphere and ocean References part at high frequencies delivers the exchange time. Cool skin of the ocean the net heat flux between gas exchange and wind speed over the ocean, J. Geophys. Res. 97, 7373-7381, 1992, Nightingale, P
Jaehne, Bernd
Quick Facts Quick Facts ALS Visitors Print ALS staff members host a variety of scientific, educational, government, and community-related tours each month. November 2013 poneman U.S. Deputy Secretary of Energy Daniel Poneman visited Berkeley Lab on Friday, Nov. 15, during a brief stay in the Bay Area. Glenn Mara of the University of California Office of the President and Aundra Richards of the DOE Berkeley Site Office joined Deputy Laboratory Director Horst Simon's welcome. They updated Poneman on the lab's future initiatives and current capital projects and heard briefings on cyber security, computing, and the Joint BioEnergy Institute. As second-in-command at DOE, Poneman is responsible for assisting the Secretary of Energy in the management and operations of the agency and acting on his behalf when necessary.During his tour of the ALS, Poneman (right) spoke with Ken Goldberg (Materials Sciences Division) at the CXRO beamline.
Visitor Information, Boulder Laboratories
... Visitors must wear a visitor badge at all times while on the NIST campus. Hotels/Motels, NIST Boulder Tours. Food/Dining. Local restaurants. Weather ...
ARM - Historical Visitor Statistics
and Usage (October 1995 - Present) Historical Visitor Statistics As a national user facility, ARM is required to report facility use for actual visitors and for active user...
Fermilab Education Office - Visitors
Physicists Students Visitors Fermilab Ed Site Search Google Custom Search Tours, Prairie Programs, Public Lectures and More You are welcome to tour Fermilab and visit the Lederman...
Berkeley Lab Visitor Information
Community Relations Maps and Directions Bay Area Transit Info * Visitor Pass Request Accommodations and Housing Restaurants in the Bay Area UC Berkeley Campus Map City of Berkeley...
Extended-term Visitors to CECM 1996-2004
Research Visitors to CECM. and Colloquium ... August 10-August 23, 1998: Dominik Noll, Toulouse: Optimization, Medical Imaging. August 25-August 28, 1998:�...
Lederman Science Center: Visitor's Handout
Welcome Students Visitors Fermilab Ed Site Search Google Custom Search Lederman Science Center: Visitor's Handout Read this to make your visit to the exhibits at the Science Center...
PNNL: Contacts: Visitor Information
Visitor Information Visitor Information Park in Richland Richland, Washington, enjoys more than 300 days of sunshine a year and one of the lowest costs of living in the state. The Pacific Northwest National Laboratory is located in north Richland, Washington, and is served by the Tri-Cities Airport in Pasco. Richland, Pasco and Kennewick make up the Tri-Cities, where the Columbia, Snake and Yakima Rivers meet before heading to the Pacific Ocean. Directions From the Tri-Cities Airport From Seattle, Washington From Spokane, Washington From Portland, Oregon Maps Airport to Richland PNNL Main Campus Badging Invited U.S. citizens will need valid photo identification to receive access badges. Foreign nationals should arrange with their hosts for appropriate approval procedures (please allow two weeks). All foreign
Exchange Visitors Program | Department of Energy
Program Facility Operations Food Services Graphics Mail and Distribution Parking and Garage Photography Printing Recycling Safety and Health Shuttle Bus and Couriers Supply...
Visitors Far and Wide
4 4 Visitors Far and Wide From left: Minister Danilov-Daniljan, Evan Mills (Assistant Director, Center for Building Science), Victoria Mats (interpreter and Soviet energy analyst), and Len Grossman (PG&E Energy Center) tour the PG&E Energy Center in San Francisco. The Russian Minister of Ecology and Natural Resources, Victor I. Danilov-Daniljan, spent three days in California as the Center's guest. The Minister presented information on current Soviet energy and environmental dilemmas and participated in a day-long roundtable discussion with representatives of major utilities, manufacturers of energy-efficient technologies, energy regulators, nongovernmental organizations, and Center scientists. Julian Aizenberg, one of the former Soviet Union's (FSU) foremost lighting
Host for international visitors. Progress report, January 1-July 31, 1978
DOE Green Energy (OSTI)
This report sets forth the rationale and need for the task. It provides SERI's program statement, activities engaged in, and a discussion of the several visits with accompanying names of international visitors. Approximately 80 international visitors representing 38 countries visited SERI for purposes of information exchange during the reporting period.
Bracken, R B
DOE - Office of Legacy Management -- Visitors Center
Office of Legacy Management (LM)
Ohio > Fernald > Visitors Center > Visitors Center Ohio > Fernald > Visitors Center > Visitors Center Fernald Preserve, Ohio Fernald Preserve Visitors Center Fernald Visitors Center Fernald Preserve Home Page Visitors Center Directions Event Calendar Community Meeting Room Guided Tour Educational Field Trip Speaker Request Brochures Fact Sheets Presentations BioBlitz Geocaching Pets Policy The Fernald Preserve Visitors Center is a 10,000-square-foot green building that celebrates the rich and varied history of the Fernald site. Information on the site's natural, Native American, settlement and farming, uranium production, and environmental cleanup eras, as well as the recent ecological restoration and legacy management mission, is presented through a series of exhibits. Admission to the Visitors Center is free, and
Visitor Guide to Smart Security
Visitor Guide to Smart Security The following articles are prohibited on LANL property, including and are not allowed in Limited Security Areas or above: · personal computers and associated media (including palm- top capabilities, unless disabled). Note 1: Government cell phones are allowed into Security Areas as long
Y campusmap Mead Visitor Center
& applied science law school graduate school Mason Lab Helen Hadley Hall Leet Oliver Watson Hall Malone left. The Visitor Center is on the left in the middle of the first block, across from the New Haven 203.432.2798 www.library.yale.edu Yale Bowl 81 Central Ave From downtown New Haven, go west on Chapel
This report discusses the following topics on computer environments: Releasing computer software outside EG G Idaho; Ilford digital photo imager; mandatory upgrade of PC ORPS software; ORPS host computer upgrade; EROB computer users see network change; password expiration notice; big iron still has place in HPC market; handy scripts to copy and move files; more on workstation password expiration; training center course schedule for April 1993; Microsoft Word Version 5.1a- button bar; file attributes can provide you greater flexibility; constructing a personal WordPerfect dictionary; and Windows shortcuts.
Boltz, J.C. (ed.)
B Reactor Tour Registration Opens March 2 - Visitors Have Come...
B Reactor Tour Registration Opens March 2 - Visitors Have Come From 60 Countries Worldwide B Reactor Tour Registration Opens March 2 - Visitors Have Come From 60 Countries...
PIA - HSS Electronic Visitor Management System (HSEVMS) | Department...
Field Sites Power Marketing Administration Other Agencies You are here Home PIA - HSS Electronic Visitor Management System (HSEVMS) PIA - HSS Electronic Visitor Management...
. Emergency services; 3. Hospitalization; 4. Maternity and newborn care; 5. Mental health and substance use disorder services; including behavioral health treatment; 6. Prescription drugs; 7. Rehabilitative and habilitative services and devices; 8. Laboratory services; 9. Minimum $100,000 USD per sickness or injury 10
Stuart, Steven J.
APS Visitor Registration Form | Advanced Photon Source
APS Visitor Registration Form APS Visitor Registration Form To request access as a visitor who will not do hands-on work, please complete this form. For assistance, contact the APS User Office by phone at (630) 252-9090 or by email at firstname.lastname@example.com. Please request access directly by contacting the APS User Office by phone at (630) 252-9090 or by email at firstname.lastname@example.com. If you are concerned about sending your passport and visa information, leave those fields blank and fax a letter to (630) 252-9250. To Request APS Visitor Registration, please enter the following: * indicates required field First Name*: Middle Initial/Name*: Last Name*: Title: Organization*: Department: Address 1*: Address 2: City*: State*: Zip Code*: Country: Phone*: Fax: E-mail Address*: Gender*: Female
Large Eddy Simulations and stereoscopic particle image velocimetry measurements in a scraped heat exchanger crystallizer
*Corresponding author: email@example.com Abstract The transport phenomena in scraped heat exchanger crystallizers are critical for the process performance. Fluid flow and turbulence close to the heat exchanger with a focus on the bottom region where the heat exchanging surface was located. The simulations were validated
Paris-Sud XI, Université de
Synchroscan streak camera imaging at a 15-MeV photoinjector with emittance exchange
At the Fermilab A0 photoinjector facility, bunch-length measurements of the laser micropulse and the e-beam micropulse have been done in the past with a fast single-sweep module of the Hamamatsu C5680 streak camera with an intrinsic shot-to-shot trigger jitter of 10 to 20 ps. We have upgraded the camera system with the synchroscan module tuned to 81.25 MHz to provide synchronous summing capability with less than 1.5-ps FWHM trigger jitter and a phase-locked delay box to provide phase stability of {approx}1 ps over 10s of minutes. These steps allowed us to measure both the UV laser pulse train at 263 nm and the e-beam via optical transition radiation (OTR). Due to the low electron beam energies and OTR signals, we typically summed over 50 micropulses with 0.25-1 nC per micropulse. The phase-locked delay box allowed us to assess chromatic temporal effects and instigated another upgrade to an all-mirror input optics barrel. In addition, we added a slow sweep horizontal deflection plug-in unit to provide dual-sweep capability for the streak camera. We report on a series of measurements made during the commissioning of these upgrades including bunch-length and phase effects using the emittance exchange beamline and simultaneous imaging of a UV drive laser component, OTR, and the 800-nm diagnostics laser.
Lumpkin, A.H.; Ruan, J.; Thurman-Keup, R.; /Fermilab
PRIVACY IMPACT ASSESSMENT: Visitor Dosimeter Badge Tracking
Visitor Visitor Dosimeter Badge Tracking PIA Template Version 3 - May, 2009 Department of Energy Privacy Impact Assessment (PIA) Guidance is provided in the template. See DOE Order 206.1, Department of Energy Privacy Program, Appendix A, Privacy Impact Assessments, for requirements and additional guidance for conducting a PIA: http://www.directives.doe.gov/pdfs/doe/doetexUneword/206/o2061.pdf Please complete electronically: no hand-written submissions will be accepted. This template may not be modified. MODULE 1- PRIVACY NEEDS ASSESSMENT Date June 11, 2009 Deparbnental Idaho National Laboratory Element & Site Building 616 Willow Creek Building Name of Information Visitor Dosimeter Badge Tracking System or IT Project Exhibit Project UID 217975 New PIA ~ Update D Name, Title I Contact Information Phone, Email Lynn Rockhold System Owner I' 1\ I \ \ ( y P II 114 I' "I
Alternative Fuels Data Center: Propane Buses Shuttle Visitors in Maine
Alternative Fuels and Advanced Vehicles Data Center (EERE)
Propane Buses Shuttle Propane Buses Shuttle Visitors in Maine to someone by E-mail Share Alternative Fuels Data Center: Propane Buses Shuttle Visitors in Maine on Facebook Tweet about Alternative Fuels Data Center: Propane Buses Shuttle Visitors in Maine on Twitter Bookmark Alternative Fuels Data Center: Propane Buses Shuttle Visitors in Maine on Google Bookmark Alternative Fuels Data Center: Propane Buses Shuttle Visitors in Maine on Delicious Rank Alternative Fuels Data Center: Propane Buses Shuttle Visitors in Maine on Digg Find More places to share Alternative Fuels Data Center: Propane Buses Shuttle Visitors in Maine on AddThis.com... Oct. 13, 2012 Propane Buses Shuttle Visitors in Maine W atch how travelers in Bar Harbor, Maine, rely on propane-powered shuttle buses. For information about this project, contact Maine Clean Communities.
BNL Guest, User and Visitor Center
Working with Brookhaven National Laboratory Working with Brookhaven National Laboratory The Guest, User, Visitor Center (GUV Center) welcomes researchers from universities, government laboratories, and industry from within the US and abroad who are interested in visiting Brookhaven National Laboratory (BNL) or performing experiments at one of their scientific user facilities. The GUV Center is a central contact point for services for all guest, users, and visitors and is staffed with employees who know BNL well and can assist you in answering any questions you may have or directing you to individuals who can. Please feel free to contact them at firstname.lastname@example.com or via phone at 631-344-3333. Access requirements depend upon the nature of your visit to BNL so if you are participating in a meeting your requirements will be different than
In vivo Imaging of Tissue Microstructures & Cells
Current Weather. Protocol Office. Where to stay. Tri-Valley Visitors Bureau. City of Livermore. Community. Our Community. ... Microscopic imaging tool to assist ...
Wood for energy at Bedgebury Forest Bedgebury visitor centre's
an educational room, café, visitor information office and toilet and shower facilities. A self-contained bike is stored outside but stacked off the ground to allow air to circulate. It is essential that the chips
ORO Office Safeguards and Security Clearance Tracking System and Visitor
Office Safeguards and Security Clearance Tracking System and Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office ORO Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office ORO Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office ORO Office Safeguards and Security Clearance Tracking System and Visitor Control System PIA, Oak Ridge Operations Office More Documents & Publications Occupational Medicine - Assistant PIA, Idaho National Laboratory ORO Verification of Employment Tracking System(VETS) PIA, Oak ridge Operations Office iManage Strategic Integrated Procurement Enterprise System (STRIPES) PIA, Office of Procurement and Assistance Management
Solar Decathlon 2011: The Visitor's Perspective | Department of Energy
Decathlon 2011: The Visitor's Perspective Decathlon 2011: The Visitor's Perspective Solar Decathlon 2011: The Visitor's Perspective September 26, 2011 - 12:48pm Addthis Each house has personalized details--like Florida International's etchings inscribed on the deck floor. Each house has personalized details--like Florida International's etchings inscribed on the deck floor. Erin R. Pierce Erin R. Pierce Digital Communications Specialist, Office of Public Affairs This past Sunday morning I boarded a shuttle headed towards West Potomac Park, site of this year's Solar Decathlon competition. I wanted to experience the event, now in its 5th iteration, from the visitor's perspective-so I grabbed a map of the Solar Village and joined a line of fellow sightseers. I should note that D.C.'s quasi-monsoon season (relentless rain and
ASCR Committees of Visitors | U.S. DOE Office of Science (SC)
ASCR Committees of Visitors ASCR Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: firstname.lastname@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: email@example.com
Committees of Visitors | U.S. DOE Office of Science (SC)
Office of Science (SC) Website
Committees of Visitors Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: email@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: email@example.com
NP Committees of Visitors | U.S. DOE Office of Science (SC)
NP Committees of Visitors NP Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: email@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: email@example.com
HEP Committees of Visitors | U.S. DOE Office of Science (SC)
HEP Committees of Visitors HEP Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: email@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: firstname.lastname@example.com
WDTS Committees of Visitors | U.S. DOE Office of Science (SC)
WDTS Committees of Visitors WDTS Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: firstname.lastname@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: firstname.lastname@example.com
FES Committees of Visitors | U.S. DOE Office of Science (SC)
FES Committees of Visitors FES Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: email@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: firstname.lastname@example.com
BER Committees of Visitors | U.S. DOE Office of Science (SC)
BER Committees of Visitors BER Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: email@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: email@example.com
BES Committees of Visitors | U.S. DOE Office of Science (SC)
BES Committees of Visitors BES Committees of Visitors Deputy Director for Science Programs Deputy Director Home Mission & Functions Deputy Director Biography Organization Staff Presentations & Testimony Federal Advisory Committees Committees of Visitors ASCR Committees of Visitors BES Committees of Visitors BER Committees of Visitors FES Committees of Visitors HEP Committees of Visitors NP Committees of Visitors WDTS Committees of Visitors Contact Information Deputy Director for Science Programs U.S. Department of Energy SC-2/Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-5430 F: (202) 586-4120 E: firstname.lastname@example.com U.S. Department of Energy SC-2/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-5316 F: (301) 903-7780 E: firstname.lastname@example.com
Fernald Preserve Visitors Center Grand Opening and LEED Platinum
Fernald Preserve Visitors Center Grand Opening and LEED Platinum Fernald Preserve Visitors Center Grand Opening and LEED Platinum Certification Fernald Preserve Visitors Center Grand Opening and LEED Platinum Certification October 16, 2008 - 4:14pm Addthis Remarks as Prepared for Acting Deputy Secretary Kupfer Thank you, Mike, for that introduction and to both you and Jane for hosting this event. You both have been instrumental in the dramatic transformation of this site. We made a commitment more than a decade ago to do three things here at Fernald: to close it, to clean it up and to give it back to the community. I'm proud to say we have fulfilled that commitment safely and ahead of schedule. Less than two years ago, I was here with Secretary Bodman as he announced the completion of a $4.4 billion clean up operation. Since then, we have
Refactoring Composite to Visitor and Inverse Transformation in Java
We describe how to use refactoring tools to transform a Java program conforming to the Composite design pattern into a program conforming to the Visitor design pattern with the same external behavior. We also describe the inverse transformation. We use the refactoring tools provided by IntelliJ IDEA and Eclipse.
Ajouli, Akram
Association Exchange
The AOCS Association Exchange program goal is to create collaborative partnerships and long term business relations with related organizations. Association Exchange Membership Information achievement application award Awards distinguished division
The epidemiology and etiology of visitor injuries in Hawaii Volcanoes National Park
The U.S. National Park Service has recognized visitor health and safety as an important component of protected area management. Despite this recognition, research investigating visitor health and safety issues in national parks is lacking. In order to improve the understanding of the factors contributing to visitor injuries, the purpose of this study was to: 1) identify the distribution of injuries in Hawaii Volcanoes National Park, 2) examine the relationship between visitor factors and the severity of visitor injuries in Hawaii Volcanoes National Park, 3) examine the relationship between environmental factors and the severity of visitor injuries in Hawaii Volcanoes National Park, and 4) determine the effectiveness of sign placement and indirect supervision on controlling visitor injuries in the park. Data for this study consisted of 5,947 incident reports recorded in Hawaii Volcanoes between January 1, 1993 and December 31, 2002. The results found that even though 26% of the injuries in the park occur in frontcountry regions, 53% of all visitor injuries took place at the Eruption Site. As well, 130 of the 268 (49%) fatalities occurred on roadway environments and 1,179 of the 1,698 (69%) severe injuries occurred at the Eruption Site. Logistic regression analysis used to examine the relationship between visitor factors and injury severity in Hawaii Volcanoes National Park found that female visitors, visitors wearing minimal footwear and clothing, and visitors carrying no flashlight and minimal drinking water are factors significantly associated with fatal injuries. Visitors wearing minimal footwear and clothing, visitors carrying no flashlight and minimal drinking water, visitors entering restricted areas, visitors with pre-existing health conditions, and visitors aged 50-59 years of age are factors significantly associated with severe injuries. Logistic regression analysis found no built environment factor to be significantly associated with visitor fatalities or severe injuries. However, darkness and rugged terrain were significantly associated with visitor fatalities. Chi-square tests of independence found the combined treatment of sign placement and indirect supervision to have no effect on reducing the frequency and severity of visitor injuries at the Eruption Site.
Heggie, Travis Wade
Information Exchange
To encourage the exchange of information, NIST holds many workshops, seminars, tours and other events available to the public. ...
Exchangeable equilibria
The main contribution of this thesis is a new solution concept for symmetric games (of complete information in strategic form), the exchangeable equilibrium. This is an intermediate notion between symmetric Nash and symmetric ...
Stein, Noah D. (Noah Daniel)
DOE Patents (OSTI)
A heat exchanger is designed for use in the transfer of heat between a radioactive fiuid and a non-radioactive fiuid. The exchanger employs a removable section containing the non-hazardous fluid extending into the section designed to contain the radioactive fluid. The removable section is provided with a construction to cancel out thermal stresses. The stationary section is pressurized to prevent leakage of the radioactive fiuid and to maintain a safe, desirable level for this fiuid. (AEC)
Fox, T.H. III; Richey, T. Jr.; Winders, G.R.
Heat exchanger
A heat exchanger is provided having first and second fluid chambers for passing primary and secondary fluids. The chambers are spaced apart and have heat pipes extending from inside one chamber to inside the other chamber. A third chamber is provided for passing a purge fluid, and the heat pipe portion between the first and second chambers lies within the third chamber.
Daman, Ernest L. (Westfield, NJ); McCallister, Robert A. (Mountain Lakes, NJ)
A heat exchanger of the straight tube type in which different rates of thermal expansion between the straight tubes and the supply pipes furnishing fluid to those tubes do not result in tube failures. The supply pipes each contain a section which is of helical configuration.
Wolowodiuk, Walter (New Providence, NJ)
Highlighting high performance: Zion National Park Visitor Center, a sustainable building for the future
Zion National Park Visitor Center incorporated a variety of energy-efficient features into its design to address Zion's specific needs. The design blended with the canyon's unique qualities and will save energy and operation costs at the center.
Torcellini, P.
Highlighting High Performance: National Renewable Energy Laboratory's Visitors Center, Golden, Colorado
The National Renewable Energy Laboratory Visitors Center, also known as the Dan Schaefer Federal Building, is a high-performance building located in Golden, Colorado. The 6,400-square-foot building incorporates passive solar heating, energy-efficient lighting, an evaporative cooling system, and other technologies to minimize energy costs and environmental impact. The Visitors Center displays a variety of interactive exhibits on energy efficiency and renewable energy, and the building includes an auditorium, a public reading room, and office space.
Burgert, S.
Heat Exchangers
Table 16 Ceramic heat exchanger systems...Soaking pit 870�??1230 1600�??2250 Fe, Si, alkalis Solar Turbines �?� 4�??8 OD �? 180 long (440 tubes) Aluminum melt furnaces 1010 1850 Alkali salts Plate fin GTE 0.6, 1.6 25�??46 Multiple 870�??1370 1600�??2250 Clean (good), alkalis (poor) Coors 0.25, 1.0 30 �? 30 �? 46 Multiple Clean (good), alkalis (poor) Radiant...
Heat Exchangers for Solar Water Heating Systems | Department of Energy
Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems Heat Exchangers for Solar Water Heating Systems May 30, 2012 - 3:40pm Addthis Image of a heat exchanger. | Photo from iStockphoto.com Image of a heat exchanger. | Photo from iStockphoto.com Solar water heating systems use heat exchangers to transfer solar energy absorbed in solar collectors to the liquid or air used to heat water or a space. Heat exchangers can be made of steel, copper, bronze, stainless steel, aluminum, or cast iron. Solar heating systems usually use copper, because it is a good thermal conductor and has greater resistance to corrosion. Types of Heat Exchangers Solar water heating systems use three types of heat exchangers: Liquid-to-liquid A liquid-to-liquid heat exchanger uses a heat-transfer fluid that
A heat exchanger comparising a shell attached at its open end to one side of a tube sheet and a detachable head connected to the other side of said tube sheet. The head is divided into a first and second chamber in fluid communication with a nozzle inlet and nozzle outlet, respectively, formed in said tube sheet. A tube bundle is mounted within said shell and is provided with inlets and outlets formed in said tube sheet in communication with said first and second chambers, respectively.
Brackenbury, Phillip J. (Richland, WA)
Imaging Print Imaging Print The wavelengths of soft x-ray photons (1-15 nm) are very well matched to the creation of "nanoscopes" capable of probing the interior structure of biological cells and inorganic mesoscopic systems.Topics addressed by soft x-ray imaging techniques include cell biology, nanomagnetism, environmental science, and polymers. The tunability of synchrotron radiation is absolutely essential for the creation of contrast mechanisms. Cell biology CAT scans are performed in the "water window" (300-500 eV). Nanomagnetism studies require the energy range characteristic of iron, cobalt, and nickel (600-900 eV). Mid- and far-infrared (energies below 1 eV) microprobes using synchrotron radiation are being used to address problems such as chemistry in biological tissues, chemical identification and molecular conformation, environmental biodegradation, mineral phases in geological and astronomical specimens, and electronic properties of novel materials. Infrared synchrotron radiation is focused through, or reflected from, a small spot on the specimen and then analyzed using a spectrometer. Tuning to characteristic vibrational frequencies serves as a sensitive fingerprint for molecular species. Images of the various species are built up by raster scanning the specimen through the small illuminated spot.
Segmented heat exchanger
A segmented heat exchanger system for transferring heat energy from an exhaust fluid to a working fluid. The heat exchanger system may include a first heat exchanger for receiving incoming working fluid and the exhaust fluid. The working fluid and exhaust fluid may travel through at least a portion of the first heat exchanger in a parallel flow configuration. In addition, the heat exchanger system may include a second heat exchanger for receiving working fluid from the first heat exchanger and exhaust fluid from a third heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the second heat exchanger in a counter flow configuration. Furthermore, the heat exchanger system may include a third heat exchanger for receiving working fluid from the second heat exchanger and exhaust fluid from the first heat exchanger. The working fluid and exhaust fluid may travel through at least a portion of the third heat exchanger in a parallel flow configuration.
Baldwin, Darryl Dean (Lafayette, IN); Willi, Martin Leo (Dunlap, IL); Fiveland, Scott Byron (Metamara, IL); Timmons, Kristine Ann (Chillicothe, IL)
B Reactor Tour Registration Opens March 2 - Visitors Have Come From 60
B Reactor Tour Registration Opens March 2 - Visitors Have Come From B Reactor Tour Registration Opens March 2 - Visitors Have Come From 60 Countries Worldwide B Reactor Tour Registration Opens March 2 - Visitors Have Come From 60 Countries Worldwide February 26, 2013 - 12:00pm Addthis RICHLAND, Wash. - The U.S. Department of Energy (DOE) will open online registration for the B Reactor National Historic Landmark's 2013 tour season on March 2 at noon. Families with children above the age of 12, along with middle schools and high schools, are invited to sign up for the coveted tour slots. A portion of tour slots will be filled on a first-come, first-served basis through an online registration system at http://manhattanprojectbreactor.hanford.gov/, or by calling (509) 376-1647 or stopping by the B Reactor Tour Headquarters located at 2000 Logston
HEP HEP Committees of Visitors High Energy Physics Advisory Panel (HEPAP) HEPAP Home Meetings Members .pdf file (20KB) Charges/Reports Charter .pdf file (44KB) HEP Committees of Visitors HEP Home HEP Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of High Energy Physics (HEP) High Energy Physics Advisory Panel (HEPAP) 2013 HEPAP COV Charge .pdf file (486KB) 2010 HEPAP COV Report on HEP Program .pdf file (547KB) HEP Response to HEPAP COV Report on HEP Program .pdf file (29KB) 2007 HEPAP COV Report on HEP Program .pdf file (516KB) HEP Response to HEPAP COV Report on HEP Program .pdf file (16KB) 2004 HEPAP COV Report on HEP Program .pdf file (2.4MB) HEP Response to HEPAP COV Report on HEP Program .pdf file (98KB) Last modified: 9/9/2013 4:01:05 PM
NP Committees NP Committees of Visitors Nuclear Science Advisory Committee (NSAC) NSAC Home Meetings Members Charges/Reports Charter .pdf file (629KB) NP Committees of Visitors NP Home NP Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Nuclear Physics (NP) DOE/NSF Nuclear Science Advisory Committee (NSAC) 2013 NSAC COV Report on NP Program .pdf file (1.8MB) NP Response to NSAC COV Report on NP .pdf file (56KB) 2010 NSAC COV Report on NP Program .pdf file (410KB) NP Response to NSAC COV Report on NP .pdf file (32KB) 2007 NSAC COV Report on NP Program .pdf file (185KB) NP Response to NSAC COV Report on NP .pdf file (103KB) 2004 NSAC COV Report on NP Program .pdf file (148KB) NP Response to NSAC COV Report on NP .pdf file (292KB) Last modified: 5/10/2013 3:44:25
Committees of Committees of Visitors Nuclear Physics (NP) NP Home About Staff Organization Chart .pdf file (32KB) NP Budget NP Committees of Visitors Directions Jobs Labs & Universities Nuclear Physics Related Brochures Research Facilities Science Highlights Benefits of NP Funding Opportunities Nuclear Science Advisory Committee (NSAC) News & Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301) 903-3833 E: email@example.com More Information » About NP Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Nuclear Physics (NP) DOE/NSF Nuclear Science Advisory Committee (NSAC) 2013 NSAC COV Report on NP Program .pdf file (1.8MB)
BER BER Committees of Visitors Biological and Environmental Research Advisory Committee (BERAC) BERAC Home Meetings Members Charges/Reports Charter .pdf file (40KB) BER Committees of Visitors BER Home BER Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Biological and Environmental Research (BER) Biological and Environmental Research Advisory Committee (BERAC) 2013 BERAC COV Report on Division of Climate and Environmental Science (CES) .pdf file (1.7MB) BER Response to BERAC COV Report on CES .pdf file (20KB) 2011 BERAC COV Report on Division of Biological Systems Science (BSS) .pdf file (228KB) BER Response to BERAC COV Report on BSS .pdf file (22KB) 2010 BERAC COV Report on Division of CES .pdf file (300KB) BER Response to BERAC COV Report on CES .pdf file (71KB)
Committees of Committees of Visitors High Energy Physics (HEP) HEP Home About Staff Organization Chart .pdf file (170KB) HEP Budget HEP Committees of Visitors Directions Jobs University Research & National Labs Research Facilities Science Highlights Benefits of HEP Funding Opportunities Advisory Committees News & Resources Contact Information High Energy Physics U.S. Department of Energy SC-25/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3624 F: (301) 903-2597 E: firstname.lastname@example.com More Information » About HEP Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of High Energy Physics (HEP) High Energy Physics Advisory Panel (HEPAP) 2010 HEPAP COV Report on HEP Program .pdf file (547KB) HEP Response to HEPAP COV Report on HEP Program .pdf file (29KB)
FES FES Committees of Visitors Fusion Energy Sciences Advisory Committee (FESAC) FESAC Home Meetings Members Charges/Reports Charter .pdf file (140KB) FES Committees of Visitors FES Home FES Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Fusion Energy Sciences (FES) Fusion Energy Sciences Advisory Committee (FESAC) 2010 FESAC COV Report on FES Program .pdf file (707KB) FES Response to FESAC COV Report on FES .pdf file (43KB) 2006 FESAC COV Report on Tokamak Research and Enabling Technologies .pdf file (41KB) FES Response to FESAC COV Report on Tokamak Research and Enabling Technologies .pdf file (35KB) 2005 FESAC COV Report on Innovative Confinement, General Plasma Physics, and Inertial Confinement Programs .pdf file (105KB) FES Response to the FESAC COV Report on Innovative Confinement,
Committees of Committees of Visitors Biological and Environmental Research (BER) BER Home About Staff Organization Chart .pdf file (172KB) BER Budget BER Committees of Visitors Directions Jobs Research Facilities Science Highlights Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) News & Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3251 F: (301) 903-5051 E: email@example.com More Information » About BER Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Biological and Environmental Research (BER) Biological and Environmental Research Advisory Committee (BERAC)
Committees of Committees of Visitors Basic Energy Sciences (BES) BES Home About Staff Organization Chart .pdf file (51KB) BES Budget BES Committees of Visitors Directions Jobs Organizational History Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) News & Resources Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: email@example.com More Information » About BES Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Basic Energy Sciences (BES) Basic Energy Sciences Advisory Committee (BESAC) 2013 BESAC COV Report on Energy Frontier Research Centers and Joint
Committees Committees of Visitors Advanced Scientific Computing Research (ASCR) ASCR Home About Staff Organization Chart .pdf file (85KB) ASCR Budget ASCR Committees of Visitors Directions Jobs Research Facilities Science Highlights Benefits of ASCR Funding Opportunities Advanced Scientific Computing Advisory Committee (ASCAC) News & Resources Contact Information Advanced Scientific Computing Research U.S. Department of Energy SC-21/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-7486 F: (301) 903-4846 E: firstname.lastname@example.com More Information » About ASCR Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Advanced Scientific Computing Research - ASCR Advanced Scientific Computing Advisory Committee (ASCAC) 2012
BES BES Committees of Visitors Basic Energy Sciences Advisory Committee (BESAC) BESAC Home Meetings Members Charges/Reports Charter .pdf file (41KB) BES Committees of Visitors BES Home BES Committees of Visitors Print Text Size: A A A RSS Feeds FeedbackShare Page Office of Basic Energy Sciences (BES) Basic Energy Sciences Advisory Committee (BESAC) 2013 BESAC COV Report on Energy Frontier Research Centers and Joint Center for Artificial Photosynthesis Energy Innovation Hub (EFRC and JCAP) .pdf file (1.6MB) BES Response to BESAC COV Report on EFRC and JCAP .pdf file (30KB) BESAC COV Report on Division of Scientific User Facilities (SUF) .pdf file (398KB) BES Response to BESAC COV Report on SUF .pdf file (86KB) 2012 BESAC COV Report on Division of Materials Sciences and Engineering
ON ~m Small Particle Heat Exchangers Arion J. Hunt June 1978d. LBL 7841 Small Particle Heat Exchangers by Arlon J. Huntgenerally to non-solar heat exchangers. These may be of the
Hunt, A.J.
Corrosive resistant heat exchanger
A corrosive and errosive resistant heat exchanger which recovers heat from a contaminated heat stream. The heat exchanger utilizes a boundary layer of innocuous gas, which is continuously replenished, to protect the heat exchanger surface from the hot contaminated gas. The innocuous gas is conveyed through ducts or perforations in the heat exchanger wall. Heat from the heat stream is transferred by radiation to the heat exchanger wall. Heat is removed from the outer heat exchanger wall by a heat recovery medium.
Richlen, Scott L. (Annandale, VA)
Modeling visitors' profiles: A study to investigate adaptation aspects for museum learning technologies
The time restrictions that apply in museum learning increase the need for adaptive and/or adaptable technologies. However, deriving a visitor's profile is not an easy task, since most common ways (asking direct questions, recording user actions) are ... Keywords: Adaptability, adaptivity, design guidelines, education, museum, museum adaptive learning technologies
Angeliki Antoniou; George Lepouras
Woven heat exchanger
In a woven ceramic heat exchanger using the basic tube-in-shell design, each heat exchanger consisting of tube sheets and tube, is woven separately. Individual heat exchangers are assembled in cross-flow configuration. Each heat exchanger is woven from high temperature ceramic fiber, the warp is continuous from tube to tube sheet providing a smooth transition and unitized construction.
Piscitella, Roger R. (Idaho Falls, ID)
This invention relates to a heat exchanger for waste heat recovery from high temperature industrial exhaust streams. In a woven ceramic heat exchanger using the basic tube-in-shell design, each heat exchanger consisting of tube sheets and tube, is woven separately. Individual heat exchangers are assembled in cross-flow configuration. Each heat exchanger is woven from high temperature ceramic fiber, the warp is continuous from tube to tube sheet providing a smooth transition and unitized construction.
Piscitella, R.R.
Committees Committees of Visitors Workforce Development for Teachers and Scientists (WDTS) WDTS Home About Organization Chart .pdf file (24KB) Education Links WDTS Budget WDTS Committees of Visitors Jobs Science Undergraduate Laboratory Internships (SULI) Community College Internships (CCI) DOE Office of Science Graduate Fellowship (SCGF) Program External link Albert Einstein Distinguished Educator Fellowship (AEF) Program Visiting Faculty Program (VFP) at DOE Laboratories DOE National Science Bowl® (NSB) Laboratory Equipment Donation Program (LEDP) Outreach Contact Information Workforce Development for Teachers and Scientists U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-8842 F: (202) 586-0019 E: firstname.lastname@example.com
Hanford Railcars Make Final Stop at B Reactor: Move Enhances Visitor
Hanford Railcars Make Final Stop at B Reactor: Move Enhances Hanford Railcars Make Final Stop at B Reactor: Move Enhances Visitor Experience at Historic Reactor Hanford Railcars Make Final Stop at B Reactor: Move Enhances Visitor Experience at Historic Reactor May 10, 2011 - 12:00pm Addthis Media Contacts Cameron Hardy, DOE (509) 376-5365 firstname.lastname@example.com Andre Armstrong, CH2M HILL (509) 376-6773 firstname.lastname@example.com RICHLAND, WASH. - Two locomotives that hauled irradiated fuel around the Hanford Site for a half-century will reach their final stop this week when they are delivered to the Historic B Reactor for preservation and public display. The two locomotives are among 16 railcars from Hanford's 200 North Area being removed by Department of Energy (DOE) contractor CH2M HILL Plateau Remediation Company (CH2M HILL).
Solar energy system installed at Mount Rushmore National Visitor Center in Keystone, South Dakota
SciTech Connect
Information is provided on the system description, the design, and installation of the solar energy system installed at the Mount Rushmore Visitor Center. The system is designed to furnish about 45 percent of the heating for the total facility and about 53 percent partial cooling for the 2000 square-foot observatory. Such items as Acceptance Test Data, a complete set of as-build drawings, system performance data, problems, pictures, and other pertinent materials are included.
Mobile Visitors in Particular to Note Web Upgrade | Department of Energy
Mobile Visitors in Particular to Note Web Upgrade Mobile Visitors in Particular to Note Web Upgrade Mobile Visitors in Particular to Note Web Upgrade November 26, 2013 - 12:00pm Addthis WASHINGTON, D.C. - DOE recently launched changes to Energy.gov, which includes the public website for EM. Smartphone and tablet users are especially likely to notice the differences. The major Energy.gov upgrade features an expanded focus on consumer-oriented content and a responsive design that automatically optimizes the browsing experience on desktop computers and laptops as well as smartphones and tablets. Read more about the changes here. Addthis Related Articles Energy.gov now provides a browsing experience tailored to the device you're using. Introducing a More Responsive Energy.gov The Energy Department's main site, Energy.gov and its contents, are now available on the go. This allows users to access the Energy Departments' resources over a variety of mobile devices such as smart phones and tablets.
Culvers 541 Plainfield Rd. 734-0400 Teddy's Red Hots 737 Plainfield Rd. 789-8580 Thai O'Cha 737 Plainfield Rd. 794-9268 McDonalds 809 Plainfield Rd. 969-7690 Home Run Inn...
Denes then provided an overview of the potential scientific opportunities of the Nest Generation Light Source. February 2013 Congressman Eric Swalwell visited Berkeley Lab on...
Dark tourism: understanding visitor motivation at sites of death and disaster
People are fascinated with death and disaster. One simply has to watch traffic slow to a crawl when passing a car accident to understand this. However, this fascination goes beyond the side of a highway and enters the realm of tourism. Today, numerous sites of death and disaster attract millions of visitors from all around the world: Auschwitz-Birkenau, Anne Frank's House, Graceland, Oklahoma City, Gettysburg, Vimy Ridge, the Somme, Arlington National Cemetery. The list grows each year as exhibited by the recent creation of an apartheid museum in Johannesburg, South Africa. Due to the increasing popularity of this tourism product, a small number of academics have begun studying the phenomenon. Leading the field are Lennon and Foley who labeled it Dark Tourism, Seaton who coined the term Thanatourism, and Rojek who developed the concept of Black Spots. However, despite ongoing study, there has been a paucity in understanding what actually motivates individuals to sites of dark tourism. Yet understanding motivation is imperative, particularly given the subject and sensitivity of these sites. Some are slowly decaying, and visitors play a large role in their preservation. Subsequently, without proper management, visitor influxes can further deteriorate sites or induce friction with the locals. Knowledge then, also provides administrators the necessary tools to properly manage the varying stakeholders. Although many feel an interest in death and disaster simply stems from morbidity, the range of factors involved extend from an interest in history and heritage to education to remembrance. To begin this study, a list of possible motivations was compiled. Then, to get a better comprehension of these motivations, visitors to the Holocaust Museum Houston were surveyed as a case study. As a commodified, synthetic site of death and atrocity, the museum fits the definitions of a dark tourism site as established by lead academics. Therefore, by asking visitors to the museum what motivated them to the site, the results will hopefully give some acumen into the wants and needs of certain stakeholders. Finally, this research sought to discover if motivation at the museum could shed light on motivation to other sites of dark tourism.
Yuill, Stephanie Marie
Exchange Rates, Information, and Crises
3 Intervention and Exchange Rate Misalignment 4 Conclusion 5explain the exchange rate determination puzzle? Americanrisk to defend the exchange rate. Universit�at Trier Working
Fernholz, Ricardo Turrin
NCSL International Technical Exchange
NCSL International Technical Exchange. Purpose: The NCSL International ... Charleston, SC 29418. Technical Contact: Val Miller (301) 975-3602.
Technology Performance Exchange
Technology Performance Exchange TDM - Jason Koman (BTO) TDM - Dave Catarious (FEMP) William Livingood National Renewable Energy Laboratory email@example.com 303-384-7490...
Spin Noise Exchange in Coupled Alkali-Metal Vapors
The physics of spin exchange collisions has fueled a large number of discoveries in fundamental physics, chemistry and biology, and has led to several applications in medical imaging and nuclear magnetic resonance. We here report on the experimental observation and theoretical justification of a novel effect, the transfer of spin noise from one atomic species to another, through the mechanism of spin exchange. Essentially, we extend the foundational studies of spin exchange into the deeper layer of quantum fluctuations. The signature of spin noise exchange is an increase of the total spin noise power at low magnetic fields where the two-species spin noise resonances overlap.
A. T. Dellis; M. Loulakis; I. K. Kominis
Employee Services | Department of Energy
Services Document Imaging Exchange Visitors Program Facility Operations Food Services Graphics Mail and Distribution Parking and Garage Photography Printing Recycling Safety and...
Moving | Department of Energy
Direct fired heat exchanger
A gas-to-liquid heat exchanger system which transfers heat from a gas, generally the combustion gas of a direct-fired generator of an absorption machine, to a liquid, generally an absorbent solution. The heat exchanger system is in a counterflow fluid arrangement which creates a more efficient heat transfer.
Reimann, Robert C. (Lafayette, NY); Root, Richard A. (Spokane, WA)
Exchanging intensional XML data
XML is becoming the universal format for data exchange between applications. Recently, the emergence of Web services as standard means of publishing and accessing data on the Web introduced a new class of XML documents, which we call intensional ... Keywords: Data exchange, Web services, XML, intensional information, typing
Tova Milo; Serge Abiteboul; Bernd Amann; Omar Benjelloun; Fred Dang Ngoc
BNL Guest, User and Visitor Center | About the Guest Information System
What is Guest Central? What is Guest Central? It is one central location that provides all the hyper links that guests, users, and visitors routinely utilize. You can request a boarding pass, notify BNL of your arrival plans, determine if your guest appointment is valid, determine if you have any outstanding training requirements, notify BNL of changes in your personal information, request an extension of your guest appointment, or see what USCIS documents are on file at BNL. The following provides a summary of how to access this portal and what resources are available. How Do I Access Guest Central? To obtain access to Guest Central you will need to set-up a user account and log-in. To create an account, you will need a valid guest number. If you do not have a guest number, please request one. Once you have access,
Wound tube heat exchanger
What is disclosed is a wound tube heat exchanger in which a plurality of tubes having flattened areas are held contiguous adjacent flattened areas of tubes by a plurality of windings to give a double walled heat exchanger. The plurality of windings serve as a plurality of effective force vectors holding the conduits contiguous heat conducting walls of another conduit and result in highly efficient heat transfer. The resulting heat exchange bundle is economical and can be coiled into the desired shape. Also disclosed are specific embodiments such as the one in which the tubes are expanded against their windings after being coiled to insure highly efficient heat transfer.
Ecker, Amir L. (Duncanville, TX)
Heat and mass exchanger
A mass and heat exchanger includes at least one first substrate with a surface for supporting a continuous flow of a liquid thereon that either absorbs, desorbs, evaporates or condenses one or more gaseous species from or to a surrounding gas; and at least one second substrate operatively associated with the first substrate. The second substrate includes a surface for supporting the continuous flow of the liquid thereon and is adapted to carry a heat exchange fluid therethrough, wherein heat transfer occurs between the liquid and the heat exchange fluid.
Lowenstein, Andrew (Princeton, NJ); Sibilia, Marc J. (Princeton, NJ); Miller, Jeffrey A. (Hopewell, NJ); Tonon, Thomas (Princeton, NJ)
Anion exchange membrane
An anion exchange membrane and fuel cell incorporating the anion exchange membrane are detailed in which proazaphosphatrane and azaphosphatrane cations are covalently bonded to a sulfonated fluoropolymer support along with anionic counterions. A positive charge is dispersed in the aforementioned cations which are buried in the support to reduce the cation-anion interactions and increase the mobility of hydroxide ions, for example, across the membrane. The anion exchange membrane has the ability to operate at high temperatures and in highly alkaline environments with high conductivity and low resistance.
Verkade, John G; Wadhwa, Kuldeep; Kong, Xueqian; Schmidt-Rohr, Klaus
"Building Energy Data Exchange Specification"
Building Energy Data Exchange Specification" "Version 2.3" "applicationvnd.ms-excel" "Overview:" "This document describes the DOE Building Energy Data Exchange Specification...
Green Exchange | Open Energy Information
Open Energy Info (EERE)
Green Exchange Jump to: navigation, search Name Green Exchange Place New York, New York Zip NY 10282 Product String representation "The Green Excha ... es marketplace." is too...
Trade, Interdependence and Exchange Rates
period is 1971-2000. All inflation rates and predictions areof Goods and Real Exchange Rate Fluc- tuations,� mimeo [5]Between Trade and Exchange Rate Volatility,� mimeo [6
Fitzgerald, Doireann
Exchange Rates and Fundamentals
We show analytically that in a rational expectations present-value model, an asset price manifests near�random walk behavior if fundamentals are I(1) and the factor for discounting future fundamentals is near one. We argue that this result helps explain the well-known puzzle that fundamental variables such as relative money supplies, outputs, inflation, and interest rates provide little help in predicting changes in floating exchange rates. As well, we show that the data do exhibit a related link suggested by standard models�that the exchange rate helps predict these fundamentals. The implication is that exchange rates and fundamentals are linked in a way that is broadly consistent with asset-pricing models of the exchange rate. I.
Charles Engel; Kenneth D. West
Active microchannel heat exchanger
The present invention is an active microchannel heat exchanger with an active heat source and with microchannel architecture. The active microchannel heat exchanger has (a) an exothermic reaction chamber; (b) an exhaust chamber; and (c) a heat exchanger chamber in thermal contact with the exhaust chamber, wherein (d) heat from the exothermic reaction chamber is convected by an exothermic reaction exhaust through the exhaust chamber and by conduction through a containment wall to the working fluid in the heat exchanger chamber thereby raising a temperature of the working fluid. The invention is particularly useful as a liquid fuel vaporizer and/or a steam generator for fuel cell power systems, and as a heat source for sustaining endothermic chemical reactions and initiating exothermic reactions.
Tonkovich, Anna Lee Y. (Pasco, WA); Roberts, Gary L. (West Richland, WA); Call, Charles J. (Pasco, WA); Wegeng, Robert S. (Richland, WA); Wang, Yong (Richland, WA)
Greywater heat exchanger
A kilowatt meter and water meter were installed to monitor pregreywater usage. The design considerations, the heat exchanger construction and installation, and the monitoring of usage levels are described.
Holmberg, D.
Evaluation of the Low-Energy Design Process and Energy Performance of the Zion National Park Visitor Center: Preprint
Paper discusses NREL's role in the participation of the design process of the Zion National Park Visitor Center Complex and the results documented from monitoring the energy performance of the building for several years. Paper includes PV system and Trombe wall description and lessons learned in the design, construction, and commissioning of the building.
Long, N.; Torcellini, P.; Pless, S.; Judkoff, R.
Technology Performance Exchange Technology Performance Exchange TDM - Jason Koman (BTO) TDM - Dave Catarious (FEMP) William Livingood National Renewable Energy Laboratory email@example.com 303-384-7490 April 2, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem: Perceived fiscal risk associated with the installation of unfamiliar technologies impedes adoption rates for cost-effective, energy-saving products. Impact of Project: Enable end users to quickly and
Classical Heat Exchanger Analysis
The industry methodology for heat exchanger performance and uncertainty analysis has been successful in dealing with the requirements of the Nuclear Regulatory Commission (NRC) issued in 1989 for safety-related service water systems, but has been found to have several significant limitations. The general objective of this report is to improve the industry performance and uncertainty analysis methodology and guidelines for implementation and analysis of heat exchanger performance. ...
Radial flow heat exchanger
A radial flow heat exchanger (20) having a plurality of first passages (24) for transporting a first fluid (25) and a plurality of second passages (26) for transporting a second fluid (27). The first and second passages are arranged in stacked, alternating relationship, are separated from one another by relatively thin plates (30) and (32), and surround a central axis (22). The thickness of the first and second passages are selected so that the first and second fluids, respectively, are transported with laminar flow through the passages. To enhance thermal energy transfer between first and second passages, the latter are arranged so each first passage is in thermal communication with an associated second passage along substantially its entire length, and vice versa with respect to the second passages. The heat exchangers may be stacked to achieve a modular heat exchange assembly (300). Certain heat exchangers in the assembly may be designed slightly differently than other heat exchangers to address changes in fluid properties during transport through the heat exchanger, so as to enhance overall thermal effectiveness of the assembly.
Valenzuela, Javier (Hanover, NH)
Ion exchange phenomena
Ion exchange phenomena involve the population of readily exchangeable ions, the subset of adsorbed solutes that balance the intrinsic surface charge and can be readily replaced by major background electrolyte ions (Sposito, 2008). These phenomena have occupied a central place in soil chemistry research since Way (1850) first showed that potassium uptake by soils resulted in the release of an equal quantity of moles of charge of calcium and magnesium. Ion exchange phenomena are now routinely modeled in studies of soil formation (White et al., 2005), soil reclamation (Kopittke et al., 2006), soil fertilitization (Agbenin and Yakubu, 2006), colloidal dispersion/flocculation (Charlet and Tournassat, 2005), the mechanics of argillaceous media (Gajo and Loret, 2007), aquitard pore water chemistry (Tournassat et al., 2008), and groundwater (Timms and Hendry, 2007; McNab et al., 2009) and contaminant hydrology (Chatterjee et al., 2008; van Oploo et al., 2008; Serrano et al., 2009).
Bourg, I.C.; Sposito, G.
Laser Assisted Emittance Exchange
We describe here the laser assisted emittance exchange (LAEE) technique. A laser operating in the transverse mode (TEM10 or TEM01) is used to interact with the electron beam in a dispersive region and to initiate the transverse-to-longitudinal emittance exchange. It is shown that with the LAEE one can generate an electron beam with ultralow transverse emittance, which allows one to significantly bring down the size of an X-ray free electron laser (FEL) and greatly extend the availability of these light sources. The technique can also be used to enhance the performances of X-ray FELs in storage rings. The timing and energy jitter problems for the standard emittance exchange and LAEE techniques are also discussed.
Xiang, Dao; /SLAC
Modular heat exchanger
A heat exchanger for use in nuclear reactors includes a heat exchange tube bundle formed from similar modules each having a hexagonal shroud containing a large number of thermally conductive tubes which are connected with inlet and outlet headers at opposite ends of each module, the respective headers being adapted for interconnection with suitable inlet and outlet manifold means. In order to adapt the heat exchanger for operation in a high temperature and high pressure environment and to provide access to all tube ports at opposite ends of the tube bundle, a spherical tube sheet is arranged in sealed relation across the chamber with an elongated duct extending outwardly therefrom to provide manifold means for interconnection with the opposite end of the tube bundle.
Culver, Donald W. (Poway, CA)
The Neural Heat Exchanger
The "Neural Heat Exchanger" is an alternative, supervised learning method for multi-layer neural nets. It is inspired by the physical heat exchanger. Unlike backprop, it is entirely local. This makes its parallel implementation trivial. It was first presented during occasional talks since 1990, and is closely related to Hinton et. al.'s recent Helmholtz Machine (1995). For the first time, this paper presents the basic ideas in written form. To fully understand the Neural Heat Exchanger's advantages and limitations, however, much theoretical and empirical work remains to be done. 1 Introduction Most conventional supervised algorithms for multi-layer neural nets are not local in space and time. Backprop, for instance, requires a global control mechanism that first propagates activation signals through all successive layers, then waits until the error signals come back, then changes the weights. Many suspect, however, that the brain does use an entirely local algorithm. One advantage of...
J�rgen Schmidhuber
Energy-Efficient Retrofits at the Carl Hayden Visitors Center; Federal Energy Management Program: Technical Assistance, Case Study (Fact sheet)
Assistance Case Study FEM? . . ( 1 , Energy-Efficient Retrofits at the Carl Hayden Visitors Center With help from FEMP, the Bureau of Reclamation retrofits the Carl Hayden Visitors Center at Glan Canyon Dam- saving energy, waterr and money. Located on the north end o f the Grand Canyon, the Glen Canyon Dam is one of the 20th cen ing marvelb, drawing lion tourists from around t h e world The Carl Hayden Viitom Center was built in 1966 to accommodate these visitms Sittingatop one of the country's most impressive sources of hydropower, the 2l,OC@qmre-foot (1951 square metem) building houses exhibits, gift shops, bathrooms, an audiiorium, and administr ative affices. In 1993, B w u of Reclamation officials saw oppoaUnities to improve energy efficiency and reduce water
Chemical exchange program analysis.
As part of its EMS, Sandia performs an annual environmental aspects/impacts analysis. The purpose of this analysis is to identify the environmental aspects associated with Sandia's activities, products, and services and the potential environmental impacts associated with those aspects. Division and environmental programs established objectives and targets based on the environmental aspects associated with their operations. In 2007 the most significant aspect identified was Hazardous Materials (Use and Storage). The objective for Hazardous Materials (Use and Storage) was to improve chemical handling, storage, and on-site movement of hazardous materials. One of the targets supporting this objective was to develop an effective chemical exchange program, making a business case for it in FY07, and fully implementing a comprehensive chemical exchange program in FY08. A Chemical Exchange Program (CEP) team was formed to implement this target. The team consists of representatives from the Chemical Information System (CIS), Pollution Prevention (P2), the HWMF, Procurement and the Environmental Management System (EMS). The CEP Team performed benchmarking and conducted a life-cycle analysis of the current management of chemicals at SNL/NM and compared it to Chemical Exchange alternatives. Those alternatives are as follows: (1) Revive the 'Virtual' Chemical Exchange Program; (2) Re-implement a 'Physical' Chemical Exchange Program using a Chemical Information System; and (3) Transition to a Chemical Management Services System. The analysis and benchmarking study shows that the present management of chemicals at SNL/NM is significantly disjointed and a life-cycle or 'Cradle-to-Grave' approach to chemical management is needed. This approach must consider the purchasing and maintenance costs as well as the cost of ultimate disposal of the chemicals and materials. A chemical exchange is needed as a mechanism to re-apply chemicals on site. This will not only reduce the quantity of unneeded chemicals and the amount spent on new purchases, but will also avoid disposal costs. If SNL/NM were to realize a 5 percent reduction in chemical inventory and a 10 percent reduction in disposal of unused chemicals the total savings would be $189, 200 per year.
Waffelaert, Pascale
A corrosive resistant heat exchanger
A corrosive and erosive resistant heat exchanger which recovers heat from a contaminated heat stream. The heat exchanger utilizes a boundary layer of innocuous gas, which is continuously replenished, to protect the heat exchanger surface from the hot contaminated gas. The innocuous gas is pumped through ducts or perforations in the heat exchanger wall. Heat from the heat stream is transferred by radiation to the heat exchanger wall. Heat is removed from the outer heat exchanger wall by a heat recovery medium. 3 figs., 3 tabs.
Richlen, S.L.
Measuring important parameters for air-sea heat exchange Christoph S. Garbeab, Uwe Schimpfab and Bernd Jhneab
Measuring important parameters for air-sea heat exchange Christoph S. Garbeab, Uwe Schimpfab Exchange, Heat flux, Digital Image Processing, Surface Renewal 1. INTRODUCTION Thermographic techniques-water heat exchange. A driving force in air sea interactions is the net sea surface heat flux. It is a vital
Garbe, Christoph S.
Predicting particle deposition on HVAC heat exchangers
gas-side of finned tube heat- exchangers. Journal of Heatsurface interactions in heat exchanger fouling. Journal ofParticle Deposition on Heat Exchangers Epstein, N. , 1988.
Siegel, J A; Nazaroff, William W
the collector and heat exchanger (Uc and Uhel � ~Constant tNational Standard, "Solar Heat Exchangers," ANSI/ASME SES 1,connecting pipes header heat exchanger insulation maximum
Mertol, Atila
Chicago Climate Exchange CCX | Open Energy Information
Chicago Climate Exchange CCX Jump to: navigation, search Name Chicago Climate Exchange (CCX) Place Chicago, Illinois Zip 60604 Product Chicago Climate Exchange (CCX) is aiming at...
Heat exchanger tube mounts
A heat exchanger in which tubes are secured to a tube sheet by internal bore welding is described. The tubes may be moved into place in preparation for welding with comparatively little trouble. A number of segmented tube support plates are provided which allow a considerable portion of each of the tubes to be moved laterally after the end thereof has been positioned in preparation for internal bore welding to the tube sheet. (auth)
Wolowodiuk, W.; Anelli, J.; Dawson, B.E.
NIST Image Gallery: Image Details
... Image Gallery : Image Details. 72 DPI Image 150 DPI Image No 300 DPI Version. Title: Frequency Comb, Ultrafast Laser. ...
... Image Gallery : Image Details. 72 DPI Image 150 DPI Image No 300 DPI Version. Title: Organic Solar Power. Description ...
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Heat exchanger-accumulator
What is disclosed is a heat exchanger-accumulator for vaporizing a refrigerant or the like, characterized by an upright pressure vessel having a top, bottom and side walls; an inlet conduit eccentrically and sealingly penetrating through the top; a tubular overflow chamber disposed within the vessel and sealingly connected with the bottom so as to define an annular outer volumetric chamber for receiving refrigerant; a heat transfer coil disposed in the outer volumetric chamber for vaporizing the liquid refrigerant that accumulates there; the heat transfer coil defining a passageway for circulating an externally supplied heat exchange fluid; transferring heat efficiently from the fluid; and freely allowing vaporized refrigerant to escape upwardly from the liquid refrigerant; and a refrigerant discharge conduit penetrating sealingly through the top and traversing substantially the length of the pressurized vessel downwardly and upwardly such that its inlet is near the top of the pressurized vessel so as to provide a means for transporting refrigerant vapor from the vessel. The refrigerant discharge conduit has metering orifices, or passageways, penetrating laterally through its walls near the bottom, communicating respectively interiorly and exteriorly of the overflow chamber for controllably carrying small amounts of liquid refrigerant and oil to the effluent stream of refrigerant gas.
Ecker, Amir L. (Dallas, TX)
Ion exchange technology assessment report
In the execution of its charter, the SRS Ion Exchange Technology Assessment Team has determined that ion exchange (IX) technology has evolved to the point where it should now be considered as a viable alternative to the SRS reference ITP/LW/PH process. The ion exchange media available today offer the ability to design ion exchange processing systems tailored to the unique physical and chemical properties of SRS soluble HLW`s. The technical assessment of IX technology and its applicability to the processing of SRS soluble HLW has demonstrated that IX is unquestionably a viable technology. A task team was chartered to evaluate the technology of ion exchange and its potential for replacing the present In-Tank Precipitation and proposed Late Wash processes to remove Cs, Sr, and Pu from soluble salt solutions at the Savannah River Site. This report documents the ion exchange technology assessment and conclusions of the task team.
Duhn, E.F.
Exchange rate determination in Indonesia.
??This thesis examines the options for adopting normative and prescriptive models of exchange rate determination suitable for developed and developing countries. It also develops a� (more)
Rusydi, Mohammad
Flat plate heat exchangers
A lightweight flat plate heat exchanger comprised of two or more essentially parallel flat plates which are formed and arranged to provide fluid flow passages between the plates. New combinations of plastic plates include the usage of transparent plastic foam and honeycomb structures. Improved shapes of flow passages include the usage of flow nozzles, flow diffusers, and jet pumps to increase fluid flow and heat transfer. The invention includes the usage of transparent plastic foam plates which are shaped to concentrate solar energy onto plastic tubes. Clear plastic tubes containing black heat transfer fluid are included. The invention includes the usage of spiral flow channels within plastic foam plates. Six different embodiments of the invention are included. Five of the embodiments could be used as efficient lightweight solar collectors.
Berringer, R.T.
Partnership in key exchange protocols
In this paper, we investigate the notion of partnership as found in security models for key exchange protocols. Several different approaches have been pursued to define partnership, with varying degrees of success. We aim to provide an overview and criticism ... Keywords: key exchange, partnership, session identifier
Kazukuni Kobara; Seonghan Shin; Mario Strefler
Technology Performance Exchange (Fact Sheet)
This fact sheet, 'The Technology Performance Exchange' will be presented at the ET Summit, held at the Pasadena Convention Center on October 15-17, 2012. The Technology Performance Exchange will be a centralized, Web-based portal for finding and sharing energy performance data for commercial building technologies.
Not Available
High Temperature Heat Exchanger Project
The UNLV Research Foundation assembled a research consortium for high temperature heat exchanger design and materials compatibility and performance comprised of university and private industry partners under the auspices of the US DOE-NE Nuclear Hydrogen Initiative in October 2003. The objectives of the consortium were to conduct investigations of candidate materials for high temperature heat exchanger componets in hydrogen production processes and design and perform prototypical testing of heat exchangers. The initial research of the consortium focused on the intermediate heat exchanger (located between the nuclear reactor and hydrogen production plan) and the components for the hydrogen iodine decomposition process and sulfuric acid decomposition process. These heat exchanger components were deemed the most challenging from a materials performance and compatibility perspective
Anthony E. Hechanova, Ph.D.
VISITOR & INFORMATION PROGRAMS Visitor Guide &Map
as ways you can experience arts, sciences and athletic events. We are delighted you chose to spend time Stadium features great places to eat, as well as spaces to relax, see movies, hear bands, bowl and just
Sheridan, Jennifer
A shell and tube heat exchanger is described having a plurality of individually removable tube bundle modules. A lattice of structural steel forming rectangular openings therein is placed at each end of a cylindrical shell. Longitudinal structural members are placed in the shell between corners of the rectangular openings situated on opposite ends of the shell. Intermediate support members interconnect the longitudinal supports so as to increase the longitudinal supports rigidity. Rectangular parallelepiped tube bundle modules occupy the space defined by the longitudinal supports and end supports and each include a rectangular tube sheet situated on each end of a plurality of tubes extending there through, a plurality of rectangular tube supports located between the tube sheets, and a tube bundle module stiffening structure disposed about the bundle's periphery and being attached to the tube sheets and tube supports. The corners of each tube bundle module have longitudinal framework members which are mateable with and supported by the longitudinal support members. Intermediate support members constitute several lattices, each of which is situated in a plane between the end support members. The intermediate support members constituting the several lattices extend horizontally and vertically between longitudinal supports of adjacent tube module voids. An alternative embodiment for intermediate support members constitute a series of structural plates situated at the corners of the module voids and having recesses therein for receiving the respective longitudinal support members adjacent thereto, protrusions separating the recesses, and a plurality of struts situated between protrusions of adjacent structural plates. 12 figs.
Giardina, A.R.
A shell and tube heat exchanger having a plurality of individually removable tube bundle modules. A lattice of structural steel forming rectangular openings therein is placed at each end of a cylindrical shell. Longitudinal structural members are placed in the shell between corners of the rectangular openings situated on opposite ends of the shell. Intermediate support members interconnect the longitudinal supports so as to increase the longitudinal supports rigidity. Rectangular parallelpiped tube bundle moldules occupy the space defined by the longitudinal supports and end supports and each include a rectangular tube sheet situated on each end of a plurality of tubes extending therethrough, a plurality of rectangular tube supports located between the tube sheets, and a tube bundle module stiffening structure disposed about the bundle's periphery and being attached to the tube sheets and tube supports. The corners of each tube bundle module have longitudinal framework members which are mateable with and supported by the longitudinal support members. Intermediate support members constitute several lattice, each of which is situate d in a plane between the end support members. The intermediate support members constituting the several lattice extend horizontally and vertically between longitudinal supports of adjacent tube module voids. An alternative embodiment for intermediate support members constitute a series of structural plates situated at the corners of the module voids and having recesses therein for receiving the respective longitudinal support members adjacent thereto, protrusions separating the recesses, and a plurality of struts situated between protrusions of adjacent structural plates.
Giardina, Angelo R. (Marple Township, Delaware County, PA)
Modeling particle deposition on HVAC heat exchangers
DEPOSITION ON HVAC HEAT EXCHANGERS JA Siegel 1,3 * and WWof fin-and-tube heat exchangers by particle deposition leadsparticle deposition on heat exchanger surfaces. We present a
Siegel, J.A.; Nazaroff, W.W.
Heat exchanger using graphite foam
A heat exchanger is disclosed. The heat exchanger may have an inlet configured to receive a first fluid and an outlet configured to discharge the first fluid. The heat exchanger may further have at least one passageway configured to conduct the first fluid from the inlet to the outlet. The at least one passageway may be composed of a graphite foam and a layer of graphite material on the exterior of the graphite foam. The layer of graphite material may form at least a partial barrier between the first fluid and a second fluid external to the at least one passageway.
Campagna, Michael Joseph; Callas, James John
Optimization of Heat Exchanger Cleaning
The performance of heat integration systems is quantified in terms of the amount of heat that is recovered. This decreases with time due to increased fouling of the heat exchange surface. Using the "Total Fouling Related Expenses (TFRE)" approach, economic incentives for heat exchanger cleaning are evaluated using linear, exponential, and exponential finite decrease models of the heat recovery decay. A mathematical comparison of mechanical and chemical cleaning of heat exchangers has identified the most significant parameters which affect the choice between the two methods.
Siegell, J. H.
Heat exchanger with ceramic elements
An annular heat exchanger assembly includes a plurality of low thermal growth ceramic heat exchange members with inlet and exit flow ports on distinct faces. A mounting member locates each ceramic member in a near-annular array and seals the flow ports on the distinct faces into the separate flow paths of the heat exchanger. The mounting member adjusts for the temperature gradient in the assembly and the different coefficients of thermal expansion of the members of the assembly during all operating temperatures.
Corey, John A. (North Troy, NY)
Entanglement Exchange and Bohmian Mechanics
This paper analyses the phenomenon of entanglement exchange in Bohm's pilot wave interpretation of quantum mechanics. The interesting feature of the phenomenon is that systems become entangled without causal interaction; hence it is a useful situation for investigating the unique nature of interaction in Bohmian mechanics. The first two sections introduce, respectively, entanglement exchange in the standard interpretation of quantum mechanics, and the basic principles of Bohmian mechanics. The next section shows that the Bohmian interpretation makes the same experimental predictions about entanglement exchange as the standard one. The final section draws some conclusions about interactions and entanglement in Bohmian mechanics.
Nick Huggett; Tiziana Vistarini
... 72 DPI Image � 150 DPI Image � 300 DPI Image �. Title: Scanning Electron Microscope with Spin Polarization Analysis. ...
... 72 DPI Image � 150 DPI Image � 300 DPI Image �. Title: Quantum Physics; Quantum Communications; Ultrafast Photon Detector; Nam. ...
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... 72 DPI Image � 150 DPI Image � 300 DPI Image �. Title: Energy; Fossil Fuels;Distillation Curves for Complex Fuel Mixtures. ...
... nist.gov. 72 DPI Image � 150 DPI Image � 300 DPI Image �. Title: Public safety & Smart Grid. Description: Electrical engineer ...
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Anion Exchange Membranes for Fuel Cells
Anion Exchange Membranes for Fuel Cells Andrew M. Herring CSM Bryan Pivovar NREL 1 Anion Exchange Membranes (Presented to Parallel Breakout Sessions) * Stability Challenges -...
Heat pipe array heat exchanger
A heat pipe arrangement for exchanging heat between two different temperature fluids. The heat pipe arrangement is in a ounterflow relationship to increase the efficiency of the coupling of the heat from a heat source to a heat sink.
Reimann, Robert C. (Lafayette, NY)
XML for CIM Model Exchange
Abstract: Organizations responsible for secure power system operations need to model their systems and portions of neighboring systems in support of control and security functions. In the USA, the restructuring of the electric utility industry emphasizes the need to exchange operational system models for Independent System Operators (ISO) and Regional Transmission Organizations (RTO). These models need to be node/breaker oriented in order to meet the needs of control center applications. Unfortunately, the existing model exchange formats derive from planning models that are bus/branch oriented and lack detail required for control center operations. To support these data modeling exchange needs, NERC has adopted an approach that uses the semantic data definitions from the EPRI CIM with the syntax of XML to create XML files containing operational power system models. This paper presents the key aspects of XML and the CIM that make them excellent choices for addressing the operational model exchange needs of our industry.
A. Devos; Member Ieee; S. E. Widergren; Sr. Member; Ieee J. Zhu; Member Ieee
equation (5.4). Standard Bayesian inference implies that theAs before, standard Bayesian inference implies that Var 1 [f� so that standard Bayesian inference both exchange rate is
Anion exchange polymer electrolytes
Solid anion exchange polymer electrolytes and compositions comprising chemical compounds comprising a polymeric core, a spacer A, and a guanidine base, wherein said chemical compound is uniformly dispersed in a suitable solvent and has the structure: ##STR00001## wherein: i) A is a spacer having the structure O, S, SO.sub.2, --NH--, --N(CH.sub.2).sub.n, wherein n=1-10, --(CH.sub.2).sub.n--CH.sub.3--, wherein n=1-10, SO.sub.2-Ph, CO-Ph, ##STR00002## wherein R.sub.5, R.sub.6, R.sub.7 and R.sub.8 each are independently --H, --NH.sub.2, F, Cl, Br, CN, or a C.sub.1-C.sub.6 alkyl group, or any combination of thereof; ii) R.sub.9, R.sub.10, R.sub.11, R.sub.12, or R.sub.13 each independently are --H, --CH.sub.3, --NH.sub.2, --NO, --CH.sub.nCH.sub.3 where n=1-6, HC.dbd.O--, NH.sub.2C.dbd.O--, --CH.sub.nCOOH where n=1-6, --(CH.sub.2).sub.n--C(NH.sub.2)--COOH where n=1-6, --CH--(COOH)--CH.sub.2--COOH, --CH.sub.2--CH(O--CH.sub.2CH.sub.3).sub.2, --(C.dbd.S)--NH.sub.2, --(C.dbd.NH)--N--(CH.sub.2).sub.nCH.sub.3, where n=0-6, --NH--(C.dbd.S)--SH, --CH.sub.2--(C.dbd.O)--O--C(CH.sub.3).sub.3, --O--(CH.sub.2).sub.n--CH--(NH.sub.2)--COOH, where n=1-6, --(CH.sub.2).sub.n--CH.dbd.CH wherein n=1-6, --(CH.sub.2).sub.n--CH--CN wherein n=1-6, an aromatic group such as a phenyl, benzyl, phenoxy, methylbenzyl, nitrogen-substituted benzyl or phenyl groups, a halide, or halide-substituted methyl groups; and iii) wherein the composition is suitable for use in a membrane electrode assembly.
Kim, Yu Seung; Kim, Dae Sik; Lee, Kwan-Soo
Chicago Climate Exchange, Inc. 2010 Chicago Climate Exchange 1 The Role of Exchanges and Standardization
Premium Standard Farms Smithfield Foods, Inc. Forest Products Abitibi-Consolidated Aracruz Celulose S Incorporated NewPage Plum Creek Suzano Papel E Celulose SA Tembec Industries Inc. #12;Chicago Climate Exchange
Direct Imaging of Asymmetric Magnetization Reversal
Direct Imaging of Asymmetric Magnetization Reversal Print Direct Imaging of Asymmetric Magnetization Reversal Print The phenomenon of exchange bias has transformed how data is read on magnetic hard disks and created an explosion in their information storage density. However, it remains poorly understood, and even the fundamental mechanism of magnetic reversal for exchange-biased systems in changing magnetic fields is unclear. By using x-ray photoemission electron microscopy at the ALS to directly image the magnetic structure of an exchange-biased film, a team from the University of Washington and the Stanford Synchrotron Radiation Laboratory has identified separate magnetic-reversal mechanisms in the two branches of a hysteresis loop. This advance in fundamental understanding will provide new insights for developing the next generation of information storage and sensing devices where exchange bias is expected to play a critical role.
... Description: A sheet of laser light illuminating the surface of the heat exchanger during the air velocity measurement experiment. *BFRL. ...
Exploration of Ion-Exchanged Glass for Seals Applications
As the nuclear industry grows around the globe, it brings with it a need for more safeguards and proliferation resistant technologies. The International Atomic Energy Agency (IAEA) depends on effective containment and surveillance (C/S) technologies and methods for maintaining continuity of knowledge over nuclear assets. Tags and seals, a subset of C/S technologies, are an area where innovation has been relatively stagnant for the past fifteen years. It is necessary to investigate technologies not previously used in this field in order to defend against emerging threats and methods of defeat. Based on a gap analysis of tags and seals currently being used by the IAEA, completed with the input of several subject matter experts, the technology selected for investigation was ion-exchanged glass. Ion-exchanged glass is relatively inexpensive, has high strength, and can be used in a variety of applications. If identical pieces of glass are exchanged under the same conditions and subjected to the same point load, the fracture patterns produced can be compared and used as a verification measure. This technology has the potential to be used in passive seal applications. Each image was categorized depending on its fracture as a "3 leaf" or "4 leaf" pattern. These two populations were separately analyzed and evaluated. Several methods used to analyze the fracture patterns involve the use of image analysis software such as ImageJ and the MATLAB Control Point Selection Tool. The statistical analysis software Minitab was used to validate the use of facture pattern analysis as verification tool. The analysis yielded a 60% verified comparison for samples demonstrating a "3 leaf" fracture pattern and a 78% verified comparison for samples with a "4 leaf" fracture pattern. This preliminary analysis provides a strong indication of the plausibility for the use of ion-exchanged glass as a verification measure for C/S measures and specifically tags and seals.
Ghanbari, Roushan
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Visitor Information Services
Residence s, under constructi on School of Engineering Center Nanotechnology Building, under construction Li Ka Shing Center Stanford Institutes of Medicine, under construction...
ORAU Campus Visitor Map
+ Number Directions from Main Campus: Go back out to ORAU Way Turn left onto ORAU Way Turn left at S Illinois AveTN-62 (2.9 mi) Bear Slight right toward Bethel...
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closure. Participants at the January 28 meeting discussed enthusiastically the job-creation and environmental promises of a hybrid-vehicle industry. They pledged to work with a...
CECM: Visitor Information
The CECM is located in the Shrum Science Building Room P8495, at the foot of the stairwell just east of the Earth Sciences General office on the 9000 level and�...
Exchange Server 2010 Unleashed, 1st edition
Microsoft Exchange Server 2010 Unleashed is the ultimate guide to designing, deploying, managing, troubleshooting, and supporting any Exchange Server 2010 environment, no matter how large or complex. Drawing on their extensive experience with hundreds ...
Rand Morimoto; Michael Noel; Chris Amaris; Andrew Abbate; Mark Weinhardt
Intelligent predictive control of micro heat exchanger
An intelligent predictive control to temperature control of a micro heat exchanger is addressed. First, the dynamics of the micro heat exchanger is identified using a locally linear model. Then, the predictive control strategy based on this model of ...
Mehdi Galily; Farzad Habibipour Roudsari; Masoum Fardis; Ali Yazdian
New Challenges in Multihospital Kidney Exchange
The growth of kidney exchange presents new challenges for the design of kidney exchange clearinghouses. The players now include directors of transplant centers, who see sets of patient-donor pairs, and can choose to reveal ...
Ashlagi, Itai
Synergistic diffuser/heat-exchanger design
The theoretical and numerical evaluation of synergistic diffusing heat-exchanger design is presented. Motivation for this development is based on current diffuser and heat-exchange technologies in cogeneration plants, which ...
Lazzara, David S. (David Sergio), 1980-
Phosphonic acid based ion exchange resins
An ion exchange resin is described for extracting metal ions from a liquid waste stream. An ion exchange resin is prepared by copolymerizing a vinylidene diphosphonic acid with styrene, acrylonitrile and divinylbenzene. 9 figures.
Horwitz, E.P.; Alexandratos, S.D.; Gatrone, R.C.; Chiarizia, R.
Deposition of biological aerosols on HVAC heat exchangers
Methods to Maintain Heat Exchanger Coil Cleanliness. ASHRAEEngineering Foundation on Heat Exchanger Fouling, UnitedAerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain
Siegel, Jeffrey; Walker, Iain
Methods to Maintain Heat Exchanger Coil Cleanliness. ASHRAEEngineering Foundation on Heat Exchanger Fouling, Unitedof HVAC Fin and Tube Heat Exchangers, To be published in the
Freely Floating Exchange Rates Do Not Systematically Overshoot
Canadian-U.S. exchange rate, Review of Financial Economics,economy under flexible exchange rates, Journal of Monetary1976, Expectations and Exchange Rate Dynamics, Journal of
Pippenger, John
Globalization, Macroeconomic Performance, and the Exchange Rates of Emerging Economies
The Impact of Exchange Rate Movements on U.S. Foreign Debt."Performance, and the Exchange Rates of Emerging Economies*volatility, exchange-rate regimes, institutions,
Obstfeld, Maurice
After the Fall: East Asian Exchange Rates Since the Crisis
Case for Floating Exchange Rates in Asia. � In Monetary and2005. �Classifying Exchange Rate Regimes: Deeds vs. Words. �Ronald I. 2005. Exchange Rates under the East Asian Dollar
Cohen, Benjamin J
SPR - Historical Oil Sales and Exchanges | Department of Energy
- Historical Oil Sales and Exchanges SPR - Historical Oil Sales and Exchanges SPR - Historical Oil Sales and Exchanges More Documents & Publications Before the Senate Energy and...
EA-179 California Power Exchange Corporation | Department of...
9 California Power Exchange Corporation EA-179 California Power Exchange Corporation Order authorizing Power Exchange Corporation to export electric energy to Mexico. EA-179...
11 ector connecting pipes header heat exchanger insulationLt total connecting pipe length, m (ft) total number of heat
Thermal Response Testing for Geothermal Heat Exchangers ...
Thermal Response Testing for Geothermal Heat Exchangers Begins. The Net-Zero house features a geothermal heat pump ...
Integrated Approach to Revamping Heat Exchangers Networks
A heat exchanger network constitutes the core of the plant energy systems interlinking the core process operation and the utility systems. This paper will illustrate an integrated approach for the revamp of a heat exchanger network by bringing together process simulation, pinch analysis and detailed heat exchanger design tools. The paper will illustrate the methodology using a refinery example.
Glass, K. E.; Dhole, V.; Wang, Y.
Verifiable auctions for online ad exchanges
This paper treats a critical component of the Web ecosystem that has so far received little attention in our community: ad exchanges. Ad exchanges run auctions to sell publishers' inventory-space on Web pages-to advertisers who want to display ads in ... Keywords: ad exchanges, online advertising, verifiable auctions
Sebastian Angel; Michael Walfish
Science Policy Exchange September 21, 2009 Columbia River Estuary Science-Policy Exchange
Science Policy Exchange September 21, 2009 Summary 1 Columbia River Estuary Science-Policy Exchange and Conservation Council hosted a science-policy exchange in Astoria, Oregon. The Council supports strategies Science Advisory Board (ISAB) and the Independent Scientific Review Panel (ISRP) attended the exchange
Fluidized bed heat exchanger utilizing angularly extending heat exchange tubes
A fluidized bed heat exchanger in which air is passed through a bed of particulate material containing fuel disposed in a housing. A steam/water natural circulation system is provided and includes a steam drum disposed adjacent the fluidized bed and a series of tubes connected at one end to the steam drum. A portion of the tubes are connected to a water drum and in the path of the air and the gaseous products of combustion exiting from the bed. Another portion of the tubes pass through the bed and extend at an angle to the upper surface of the bed.
Talmud, Fred M. (Berkeley Heights, NJ); Garcia-Mallol, Juan-Antonio (Morristown, NJ)
Liquid Crystal Technique Application for Heat Transfer Investigation in a Fin-Tube Heat Exchanger Element
The use of thermochromic liquid crystal technique (LCT) and true-colour image processing system in heat transfer modelling is described. Experimental procedure, led on rig at Technical University of Gdansk, cover full-field flow patterns in heat exchanger ... Keywords: heat transfer, thermochromic liquid crystals, vortex generator, wind tunnel
M. Wierzbowski; J. Stasiek
Testing and analysis of immersed heat exchangers
The objectives were to determine the performance of four immersed, ''supply-side'' heat exchangers used in solar domestic-hot-water systems; to examine the effects of flow rate, temperature difference, and coil configuration on performance; and to develop a simple model to predict the performance of immersed heat exchangers. We tested four immersed heat exchangers: a smooth coil, a finned spiral, a single-wall bayonet, and a double-wall bayonet. We developed two analyticl models and a simple finite difference model. We experimentally verified that the performance of these heat exchangers depends on the flow rate through them; we also showed that the temperature difference between the heat exchanger's inlet and the storage tank can strongly affect a heat exchanger's performance. We also compared the effects of the heat exchanger's configuration and correlated Nusselt and Rayleigh numbers for each heat exchanger tested. The smooth coil had a higher effectiveness than the others, while the double-wall bayonet had a very low effectiveness. We still do not know the long-term effectiveness of heat exchangers regarding scale accumulation, nor do we know the effects of very low flow rates on a heat exchanger's performance.
Farrington, R.B.; Bingham, C.E.
... 72 DPI Image 150 DPI Image No 300 DPI Version. Title: NIST Finds that Ethanol-Loving Bacteria Accelerate Cracking of Pipeline Steels. ...
DHE (downhole heat exchangers). [Downhole Heat Exchangers (DHE)
The use of downhole heat exchangers (DHE) for residential or commercial space and domestic water heating and other applications has several desirable features. Systems are nearly or completely passive -- that is, no or very little geothermal water or steam is produced from the well either reducing or completely eliminating surface environmental concerns and the need for disposal systems or injection wells. Initial cost of pumps and installation are eliminated or reduced along with pumping power costs and maintenance costs associated with pumping often corrosive geothermal fluids. Many residential and small commercial systems do not require circulating pumps because the density difference in the incoming and outgoing sides of the loop are sufficient to overcome circulating friction losses in the entire system. The major disadvantage of DHEs is their dependence on natural heat flow. In areas where geological conditions provide high permeability and a natural hydraulic gradient, DHEs can provide a substantial quantity of heat. A single 500-ft (152 m) well in Klamath Falls, Oregon, supplies over one megawatt thermal and output is apparently limited by the surface area of pipe that can be installed in the well bore. In contrast, DHEs used in conjunction with heat pumps may supply less than 8 KW from a well of similar depth. Here output is limited by conductive heat flow with perhaps a small contribution from convection near the well bore. The highest capacity DHE reported to date, in Turkey, supplies 6 MW thermal from an 820-ft (250 m) well. There were two main goals for this project. The first was to gather, disseminate and exchange internationally information on DHES. The second was to perform experiments that would provide insight into well bore/aquifer interaction and thereby provide more information on which to base DHE designs. 27 refs., 31 figs., 3 tabs.
Culver, G.
Heat transfer and heat exchangers reference handbook
The purpose of this handbook is to provide Rocky Flats personnel with an understanding of the basic concepts of heat transfer and the operation of heat exchangers.
Industrial Plate Exchangers Heat Recovery and Fouling
Plate and Frame Heat Exchangers have special characteristics for both fouling and heat recovery. These are discussed in general then related to two industrial examples.
Cross, P. H.
Innovative heat exchangers for solar water heaters.
??The performance of two innovative collector-loop heat exchangers used in pumped circulation solar water heaters was investigated experimentally and numerically, and TRNSYS simulation models were� (more)
Soo Too, Yen Chean
Modelling of Multistream LNG Heat Exchangers.
?? The main goal of this thesis is to find out if a liquefied natural gas multistream heat exchanger numerical model is achievable. This should� (more)
Soler Fossas, Joan
Office of Waste Processing Technical Exchange
... Savannah River/Hanford/Idaho along with others receiving funding from the Environmental Management Office of Waste Processing have met to exchange recent ...
Building Technologies Office: Technology Performance Exchange...
AddThis.com... About Take Action to Save Energy Activities 179d Tax Calculator Advanced Energy Design Guides Advanced Energy Retrofit Guides Building Energy Data Exchange...
Contact Information: For more EM Waste Processing Technical Exchange 2010 information, please contact one of the folowing (click name to email): Bill Wilmarth Rosalind Blocker...
... Savannah River/Hanford/Idaho along with others receiving funding from the Environmental Management Office of Waste Processing have met to exchange ...
DOE Office of Waste Processing Technical Exchange
The Department of Energy is hosting a technical exchange in Denver, CO. Over the past seven years, personnel from the three sites, Savannah ...
Geothermal shell and tube heat exchanger augmentation
The heat exchangers for a moderate temperature geothermal plant represent a major portion of the plant capital cost. Therefore, reduction in heat exchanger size will significantly improve the electrical power economics. The potential heat exchanger size reduction that could be achieved by reducing any combination heat transfer resistance terms is evaluated. A literature survey of heat transfer augmentation schemes is summarized and equations for evaluating the impact of cleaning frequency on heat exchanger size are presented. Recommendations are made specifically for the Raft River Thermal Loop, however, the techniques are applicable to any other geothermal plant or heat transfer system.
Neill, D.T.
Technology Performance Exchange | Department of Energy
Performance Exchange Performance Exchange Technology Performance Exchange A collaboration between the U.S. Department of Energy's (DOE's) Federal Energy Management Program Office and the Building Technologies Office, the Technology Performance Exchange will establish a Web-based portal and accompanying database that allows technology suppliers to submit product performance data that private and public sector end users can use to make fact-based procurement decisions. Suppliers will populate the database with technologies that affect building activities, including construction, commissioning, maintenance, monitoring, equipment, and verification. This project will help the U.S. energy efficiency technology market by providing objective product performance data to building engineers and
... Title: Scanning tunneling microscope; Semiconductor; Spintronics. Description: [Left] A high resolution STM image of a manganese ...
... Title: Nanotechnology--Nanomanufacturing; Optical Nano Vision. Description: A new optical imaging technology under ...
SPIE Medical Imaging Medical Imaging
1 SPIE Medical Imaging 2006 1 Medical Imaging Fundamentals Kenneth H. Wong, Ph.D. Division of Computer Assisted Interventions and Medical Robotics (CAIMR) Imaging Science and Information Systems (ISIS) Center Department of Radiology Georgetown University SPIE Medical Imaging 2006 2 Main Themes · Describe
Miga, Michael I.
Quality Assurance Exchange August 2012
With the help of dedicated quality With the help of dedicated quality professionals across the complex and beyond, I am pleased to announce that this issue of the Quality Assurance Exchange (QAE) newsletter focuses on hard hitting issues, as well as opportunities to explore abatement methods in regards to our quality assurance (QA) challenges. Within, you will find a brief discussion on the Department of Energy (DOE) Federal Quality Council and its Calendar Year 2011 accomplishments; an exploration of Safety Software QA activities including an overview of the annual meeting; an update on the Safety Software Communication Forum; and activities surrounding new and upcoming guides and systems. Also, you will get an inside look on the Differing Professional Opinions Process; read an exclusive interview
Heat exchanger with a removable tube section
A heat exchanger is described in which the tube sheet is secured against primary liquid pressure, but which allows for easy removal of the tube section. The tube section is supported by a flange which is secured by a number of shear blocks, each of which extends into a slot which is immovable with respect to the outer shell of the heat exchanger. (auth)
Wolowodiuk, W.; Anelli, J.
Stability analysis of heat exchanger dynamics
In the study of vapor compression cycle, momentum balance equation is often ignored in the heat exchanger model. In this paper, we investigate the effect of the momentum balance through a systematic study of the open loop stability of a heat exchanger. ...
Tiejun Zhang; John T. Wen; Juan Catano; Rongliang Zhou
Efficient autonomous signature exchange on ubiquitous networks
Fair signature exchange in emerging ubiquitous commerce (u-commerce) poses new security challenges. In particular, its operations are highly distributed and autonomous, and typically run on much open, dynamic and resource-diversified ubiquitous networks. ... Keywords: Communication protocol, Fair exchange, Signature, Ubiquitous computing, Verifiable encryption
Q. Shi; N. Zhang; D. Llewellyn-Jones
Guidance for an Effective Heat Exchanger Program
Heat exchangers are used extensively in the nuclear power generation industry. Their proper operation is essential for reliable and safe nuclear plant operation. Increased emphasis on heat exchanger reliability at nuclear power plants has resulted in the development of engineering programs or equivalent actions to maintain the required thermal performance and structural integrity.
Heat Exchanger Thermal Performance Margin Guidelines
This report provides utility engineers with guidance on how to identify the thermal performance margin that is available in a given heat exchanger by comparing the thermal performance requirement at design limiting conditions to the thermal performance capability of the heat exchanger under those same conditions.
Circulation and Exchange in Choked Marginal Seas
A theory for the exchange between a rotating, buoyancy-forced marginal sea and an ocean is developed and tested numerically. Cooling over the marginal sea leads to sinking and sets up a two-layer exchange flow, with a warm surface layer entering ...
Larry J. Pratt; Michael A. Spall
Thermodynamic Efficiency of Heat Exchange Devices
The continued rise in the cost of energy 'has it imperative to augment the usual heat flow analyses for power plants, refineries, chemical plants and other energy intensive industries by adding analyses of available energy flow and device irreversibilities. The reclamation of what was formerly 'waste heat' by using additional, or more efficient, equipment has become not only economically feasible, but sometimes essential. A thermodynamic efficiency based on the second law of thermodynamics is defined for heat exchange devices. The efficiency can be simply written in terms of the mean absolute temperature levels of the two fluids exchanging heat, and an appropriate environment temperature. It is also shown that for a given ratio of hot to cold inlet temperatures, the efficiency and effectiveness for particular heat exchange configurations are related. Conclusions regarding the effect of stream temperatures on the efficiency of various types of exchangers are made. The concept is applied to typical heat exchange cases to demonstrate its applicability and sensitivity.
Witte, L. C.; Shamsundar, N.
Korea Power Exchange (KPX) | Open Energy Information
Exchange (KPX) Exchange (KPX) Jump to: navigation, search Logo: Korea Power Exchange (KPX) Name Korea Power Exchange (KPX) Agency/Company /Organization Argonne National Laboratory Sector Energy Focus Area Energy Efficiency Topics Background analysis Website http://www.dis.anl.gov/news/Ko Country South Korea Eastern Asia References http://www.dis.anl.gov/news/KoreaKpxIit.html Abstract In an agreement signed on March 26, 2007, Argonne National Laboratory and the Illinois Institute of Technology are joining with the Korea Power Exchange to establish a joint training program combining training and research at Argonne with formal academic education at IIT. Argonne-IIT Joint Graduate Program in Electricity Markets: In an agreement signed on March 26, 2007, Argonne National Laboratory and the Illinois
Presenting Test Results Heat Exchanger Descriptions and Testof Residential Heat Exchangers Conclusions . . . . . . . .ventilation testing heat exchangers. system, a heat
Fisk, William J.
... Title: Carbon Nanotube Measurements. Description: Scanning electron microscope image of 'cleaned' carbon nanotubes at NIST (color added for ...
... Description: Engineering design image shows a cross-section of part of the planned ITER fusion reaction vessel. Diverter ...
DOE Solar Decathlon: 2009 Solar Village Time-Lapse Images
that shows the houses lining Decathlete Way, which is filled with visitors. In the distance, numerous Washington, D.C., buildings are visible. that shows the houses lining Decathlete Way, which is filled with visitors. In the distance, numerous Washington, D.C., buildings are visible. A time-lapse camera mounted on the Smithsonian Castle captured the daily activity in the solar village from above during Solar Decathlon 2009. Solar Decathlon 2009 Solar Village Time-Lapse Images The U.S. Department of Energy Solar Decathlon 2009 time-lapse cameras provided real-time updates from the solar village throughout the event. Three videos were created from the time-lapse images captured by the cameras, which filmed 24 hours a day on the National Mall. Camera One Camera One was positioned in the middle of the solar village on the National Mall and faced east toward the U.S. Capitol. Camera Two Camera Two was positioned in the middle of the solar village on the
Fouling of HVAC fin and tube heat exchangers
Methods to Maintain Heat Exchanger Coil Cleanliness, ASHRAEof HVAC Fin and Tube Heat Exchangers Jeffrey Siegel and VanOF HVAC FIN AND TUBE HEAT EXCHANGERS Jeffrey Siegel 1,2 and
Siegel, Jeffrey; Carey, Van P.
Particulate Fouling of HVAC Heat Exchangers Jeffrey Alexander Siegel
Particulate Fouling of HVAC Heat Exchangers by Jeffrey Alexander Siegel B.S. (Swarthmore College.......................................................................................xv CHAPTER 1: PARTICULATE FOULING OF HVAC HEAT EXCHANGERS ....1 1.1 Introduction.......................................................................11 CHAPTER 2: MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS
Siegel, Jeffrey
Second Law Optimization of Heat Exchangers
A new method for optimizing heat exchangers is developed in this paper. It is based on second law efficiency relationships rather than on the traditional heat exchanger effectiveness concept. The cost of energy is based on its availability level rather than on the simple cost of fuel required to meet the exchanger heat duty. Application of the method to a condensing heater shows that the optimum area based on second law efficiency can be quite different from the optimum area computed by the effectiveness method.
Witte, L. C.
Skew chicane based betatron eigenmode exchange module
A skewed chicane eigenmode exchange module (SCEEM) that combines in a single beamline segment the separate functionalities of a skew quad eigenmode exchange module and a magnetic chicane. This module allows the exchange of independent betatron eigenmodes, alters electron beam orbit geometry, and provides longitudinal parameter control with dispersion management in a single beamline segment with stable betatron behavior. It thus reduces the spatial requirements for multiple beam dynamic functions, reduces required component counts and thus reduces costs, and allows the use of more compact accelerator configurations than prior art design methods.
Douglas, David (Yorktown, VA)
Heat Exchanger Technologies for Distillation Columns
In this paper we look at the challenges that improvements in energy efficiency of distillation systems presents the heat exchanger designer. We examine each type of exchanger in turn. Heat exchanger size is minimized if the temperature driving force is maximized. The design should therefore seek to minimize the temperature changes during phase change. So, streams that are being condensed are kept as hot as possible. Streams that are being vaporized are kept as cool as possible. With one noted exception, this also leads to maximization of the thermodynamic efficiency and maximizes the scope for use of these streams in integrated systems.
Polley, G. T.
International information exchange in fusion research
Formal and informal agreements exist between the US and several other countries, assuring the unrestricted exchange of magnetic fusion information. The Fusion Energy Library at Oak Ridge National Laboratory uses the US Department of Energy standard distribution system and exchange agreements to ensure the receipt of current reports. Selective dissemination of information, computer networks, and exchange programs are additional means for information gathering. The importance of these means as they relate to the fusion program in the US and specifically at ORNL is discussed.
Strickler, C.S.
Heat Exchanger Design for Solar Gas-Turbine Power Plant.
?? The aim of this project is to select appropriate heat exchangers out of available gas-gas heat exchangers for used in a proposed power plant.� (more)
Yakah, Noah
Event:Technical Workshop & Peer Exchange 'NAMA finance and MRV...
Technical Workshop & Peer Exchange 'NAMA finance and MRV' Jump to: navigation, search Calendar.png Technical Workshop & Peer Exchange 'NAMA finance and MRV': on 20120911...
Energy Technology Data Exchange | Open Energy Information
Exchange Exchange Jump to: navigation, search Logo: Energy Technology Data Exchange Name Energy Technology Data Exchange Address P.O. Box 62 Place Oak Ridge, Tennessee Zip 37831 Year founded 1987 Phone number 865 576 1272 Coordinates 36.0103°, -84.2698° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":36.0103,"lon":-84.2698,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
Cooperative update exchange in the Youtopia system
Youtopia is a platform for collaborative management and integration of relational data. At the heart of Youtopia is an update exchange abstraction: changes to the data propagate through the system to satisfy user-specified mappings. We present a novel ...
?ucja Kot; Christoph Koch
Essays on exchange rates and electricity demand
This thesis examines two important issues in economic development: exchange rates and electricity demand and addresses methodological issues of using time series and panel data analysis to investigate important policy ...
Li, Xiangming, 1966-
On Modeling Of Heat Exchangers In Modelica
It is demonstrated how Modelica TM is used in an application to develop models that are useful when solving real problems. Modelica is a new unified modeling language being developed in an international effort to promote object-oriented and non-causal modeling, and exchange of model libraries. The application is a heat exchanger where the media are liquids, typically water. This type of heat exchangers can be used for district heating of houses and for production of hot tap water. The model developed illustrates very nicely the power of Modelica. The modularization concepts support flexible model components which are easy to use and to adapt when making a model of a real system with heat exchangers. The concept of class parameters support medium parameterization and arrays of model components support discretization. The expressive power of Modelica allows complete listings of the developed model components to be given. The model produces simulation results that agree very well with measured data.
Sven Erik Mattsson
Experimental Study of Hybrid Cooled Heat Exchanger.
??A test system for a hybrid cooled heat exchanger was designed, and the test facility was constructed based on ASHRAE Standard 41.2-1987. A conventional air-cooled� (more)
Tsao, Han-Chuan
Direct Diagnoses of Stratosphere�Troposphere Exchange
This study discusses the direct diagnosis of stratosphere�troposphere exchange. The method introduced by Wei is applied to the Goddard Earth Observation System assimilated dataset. In many respects, the results generally agree with those of other ...
Andrew Gettelman; Adam H. Sobel
this hotel at the government per diem rate of 132.00 per night. Please reference the "DOE EM Waste Processing Technical Exchange 2010" when making your reservation to the get...
Password based key exchange with mutual authentication
A reasonably efficient password based key exchange (KE) protocol with provable security without random oracle was recently proposed by Katz, et al. [17] and later by Gennaro and Lindell [13]. However, these protocols do not support mutual authentication ...
Shaoquan Jiang; Guang Gong
Agenda Hotel Register Contacts Event Media Speaker Information Home Agenda Hotel Register Contacts Event Media Speaker Information Home Environmental Management Waste Processing Technical Exchange 2010 in Atlanta, GA, November 16 - 18. Over the past eight years, personnel from the three sites, Savannah River/Hanford/Idaho along with others receiving funding from the Environmental Management Office of Waste Processing have met to exchange recent results of on-going field operations and technology development. The purpose of this exchange is to provide a forum for discussion of each Site's efforts to accelerate cleanup operations. Keys to success and lessons learned are openly exchanged in a manner to allow for open discussion between operations, engineering and scientists to accelerate transition of technologies from concepts to field implementation.
Image Resources
Mosaic of earth and sky images Mosaic of earth and sky images Image Resources Free image resources covering energy, environment, and general science. Here are some links to energy- and environment-related photographic databases. Berkeley Lab Photo Archive Berkeley Lab's online digital image collection. National Science Digital Library (NSDL) NSDL is the Nation's online library for education and research in science, technology, engineering, and mathematics. The World Bank Group Photo Library A distinctive collection of over 11,000 images that illustrate development through topics such as Agriculture, Education, Environment, Health, Trade and more. Calisphere Compiles the digital collections of libraries, museums, and cultural heritage organizations across California, and organizes them by theme, such
Geothermal field tests: heat exchanger evaluation
Results of the heat exchanger tests conducted on a scale model of a heat exchanger that has been designed and fabricated for the Geothermal Test Facility show that this exchanger will lose 60% of its heat transfer capability and fall below design requirements after 92 hours of operation. When the test exchanger was clean and operating as close as possible to design conditions, its overall heat transfer coefficient was 426 BTU/hr-ft/sup 2/ - /sup 0/f. when calculating in the fouling factor of .0035 this gave a design coefficient of 171 BTU/hr-ft/sup 2/ - /sup 0/f which was reached after less than four days of steady state operation. Thermal shocking of the test heat exchanger once each hour while the exchanger was operating at design conditions had no effect on scale removal or heat transfer. Results of tube cleaning showed that chemical treatment with 30% hydrochloric acid followed by a high pressure water jet (6000 psig), was effective in removing scale from tubes contacted with geothermal brine. After cleaning, the tubes were examined and some pitting was observed throughout the length of one tube.
Felsinger, D.E.
... on the availability of this image. Title: Tiny Tubes May Aid Pharmacuetical R&D. Description: NIST scientists used pairs of ...
... Magneto-optical image of magnetic fields within a YBCO superconductor showing electrically ... PHY, High-Temp Superconductors See also http ...
... Title: New Imaging Tool is Boon to Fuel Cell Research. ... water being produced and removed inside the maze-like solid housing of fuel cells under a ...
Building Technologies Office: Building Energy Data Exchange Specification
Building Energy Data Building Energy Data Exchange Specification to someone by E-mail Share Building Technologies Office: Building Energy Data Exchange Specification on Facebook Tweet about Building Technologies Office: Building Energy Data Exchange Specification on Twitter Bookmark Building Technologies Office: Building Energy Data Exchange Specification on Google Bookmark Building Technologies Office: Building Energy Data Exchange Specification on Delicious Rank Building Technologies Office: Building Energy Data Exchange Specification on Digg Find More places to share Building Technologies Office: Building Energy Data Exchange Specification on AddThis.com... About Take Action to Save Energy Activities 179d Tax Calculator Advanced Energy Design Guides Advanced Energy Retrofit Guides
Building Technologies Office: HVAC Optimized Heat Exchangers Research
Optimized Heat Optimized Heat Exchangers Research Project to someone by E-mail Share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Facebook Tweet about Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Twitter Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Google Bookmark Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Delicious Rank Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on Digg Find More places to share Building Technologies Office: HVAC Optimized Heat Exchangers Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE Activities Appliances Research Building Envelope Research
Performance Assessment Community of Practice Technical Exchange
The Department of Energy is hosting a Technical Exchange at the Hanford Site on The Department of Energy is hosting a Technical Exchange at the Hanford Site on April 13-14, 2010. The Performance Assessment Community of Practice has been chartered to advise the Office of Environmental Management Tank Waste Corporate Board regarding performance assessments and performance assessment-like analyses, promote consistency in the preparation of performance assessments across the Department of Energy (DOE) complex, foster exchange of information among performance assessment practitioners, and develop appropriate guidance for performance assessments such that they are based on sound science and are defensible. The purpose of this technical exchange is to provide a venue for performance assessment and risk assessment practitioners, managers and regulators, and contributors to the Cementitious Barriers Partnership and Advanced Simulation Capability for Environmental Management project to share plans and experiences and share ideas for future performance assessment and risk assessment modeling. The technical exchange will include a combination of plenary presentations and discussions with breakout sessions for specific topics. Discussions will emphasize areas for improved consistency and solicit suggestions for future developments related to modeling tools. A breakout discussion session is also planned to address: DOE Order 435.1 Update, regulatory challenges for performance and risk assessment modeling, and other topical areas. Arrangements have also been made for a GoldSim modeling roundtable at the conclusion of the workshop for participants who are interested in sharing experiences related to the use of GoldSim for their simulations.
Nanometric Optical Imaging Frontiers in Chemical Imaging
Nanometric Optical Imaging Frontiers in Chemical Imaging Seminar Series Presented by... Professor thermal imaging, chemical delivery and other new horizons. Finally, as part of this lecture, Lewis
Images, Video, & More
Images, Video, & More Images BABAR Design drawings SLAC Image Gallery: BABAR SLAC Image Gallery: Aerial photos Videos Public lecture on "ANTIMATTER: What is it and where did it...
The management of foreign exchange risk, Second edition
This edition of this introductory textbook to foreign exchange risk management considers: how to measure risk and accurately forecast exchange rates and use those forecasts; the principal hedging procedures; management approaches to risk including the use of export finance companies and management control and centralization. It is written by a team of corporate and banking practioners. Contents include: Measuring foreign exchange risk; Forecasting exchange rates; Using foreign exchange markets and forecasts; Hedging procedures; Management approaches to risk.
Ensor, R.; Antl, B.
Definition: Heat exchanger | Open Energy Information
Definition Definition Edit with form History Facebook icon Twitter icon » Definition: Heat exchanger Jump to: navigation, search Dictionary.png Heat exchanger A device for transferring thermal energy (heat) from one fluid (liquid or gas) to another, when the two fluids are physically separated; such as a radiator.[1][2] View on Wikipedia Wikipedia Definition A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall to prevent mixing or they may be in direct contact. They are widely used in space heating, refrigeration, air conditioning, power plants, chemical plants, petrochemical plants, petroleum refineries [bp, shell, sasol], natural gas processing, and sewage treatment. The classic example
Heat exchanger for coal gasification process
This invention provides a heat exchanger, particularly useful for systems requiring cooling of hot particulate solids, such as the separated fines from the product gas of a carbonaceous material gasification system. The invention allows effective cooling of a hot particulate in a particle stream (made up of hot particulate and a gas), using gravity as the motive source of the hot particulate. In a preferred form, the invention substitutes a tube structure for the single wall tube of a heat exchanger. The tube structure comprises a tube with a core disposed within, forming a cavity between the tube and the core, and vanes in the cavity which form a flow path through which the hot particulate falls. The outside of the tube is in contact with the cooling fluid of the heat exchanger.
Blasiole, George A. (Greensburg, PA)
Indentation behavior of ion-exchanged glasses
This paper reports indentation fracture mechanics extended to include the effect of a thin layer of residual stress on the indentation strength of brittle materials. The proposed theory was used to predict the residual stress values for an ion-exchanged glass. For flaws placed before the exchange, considerable strengthening was observed, but the value of the surface stress predicted was considerable underestimated. For flaws placed after the exchange, there was no strengthening and the value of the surface stress was predicted to be zero. The failure of the indentation analysis indicates that it has to be modified for accurate stress determination. Thin layers of residual stress were found to retard the initiation of surface damage, but their influence on the strength after damage initiation was minimal.
Tandon, R.; Green, D.J. (Dept. of Materials Science and Engineering, Pennsylvania State Univ., University Park, PA (US))
Fock exchange in meson theories of nuclei
The Fock exchange term in meson field theories of nuclear systems is shown to arise from a two-loop ground-state self-energy diagram. Evaluation of this diagram gives the relativistic or semirelativistic analog of the Fock exchange energy; it differs from the nucleon-nucleon Fock energy in including retardation effects. In finite meson-field theories of nuclear systems, the variational nature of the meson-field analog of the Hartree-Fock energy functional can be further elucidated. 4 refs.
Bolsterli, M.
Ion exchange processes for the separation of plutonium from fission products are described. In accordance with these processes an aqueous solution containing plutonium and fission products is contacted with a cation exchange resin under conditions favoring adsorption of plutonium and fission products on the resin. A portion of the fission product is then eluted with a solution containing 0.05 to 1% by weight of a carboxylic acid. Plutonium is next eluted with a solution containing 2 to 8 per cent by weight of the same carboxylic acid, and the remaining fission products on the resin are eluted with an aqueous solution containing over 10 per cent by weight of sodium bisulfate.
Boyd, G.E.; Russell, E.R.; Taylor, M.D.
Quantum exchange interaction of spherically symmetric plasmoids
We study nano-sized spherically symmetric plasma structures which are radial nonlinear oscillations of electrons in plasma. The effective interaction of these plasmoids via quantum exchange forces between ions is described. We calculate the energy of this interaction for the case of a dense plasma. The conditions when the exchange interaction is attractive are examined and it is shown that separate plasmoids can form a single object. The application of our results to the theoretical description of stable atmospheric plasma structures is considered.
Maxim Dvornikov
Accurate measurement of the through-plane water content of proton-exchange
Accurate measurement of the through-plane water content of proton-exchange Accurate measurement of the through-plane water content of proton-exchange membranes using neutron radiography Title Accurate measurement of the through-plane water content of proton-exchange membranes using neutron radiography Publication Type Journal Article Year of Publication 2012 Authors Hussey, Daniel S., Dusan Spernjak, Adam Z. Weber, Rangachary Mukundan, Joseph Fairweather, Eric L. Brosha, John Davey, Jacob S. Spendelow, David L. Jacobson, and Rodney L. Borup Journal Journal of Applied Physics Volume 112 Issue 10 Pagination 104906 Date Published 2012 ISSN 00218979 Keywords electrolyte fuel-cells, in-situ, liquid water, microchannel plate detectors, model, nafion, polymer electrolytes, schroeders-paradox, transport, x-ray-scattering Abstract The water sorption of proton-exchange membranes (PEMs) was measured in situ using high-resolution neutron imaging in small-scale fuel cell test sections. A detailed characterization of the measurement uncertainties and corrections associated with the technique is presented. An image-processing procedure resolved a previously reported discrepancy between the measured and predicted membrane water content. With high-resolution neutron-imaging detectors, the water distributions across N1140 and N117 Nafion membranes are resolved in vapor-sorption experiments and during fuel cell and hydrogen-pump operation. The measured in situ water content of a restricted membrane at 80 degrees C is shown to agree with ex situ gravimetric measurements of free-swelling membranes over a water activity range of 0.5 to 1.0 including at liquid equilibration. Schroeder's paradox was verified by in situ water-content measurements which go from a high value at supersaturated or liquid conditions to a lower one with fully saturated vapor. At open circuit and during fuel cell operation, the measured water content indicates that the membrane is operating between the vapor-and liquid-equilibrated states.
Silicon carbide (SiC) materials are prime candidates for high temperature heat exchangers for next generation nuclear reactors due to their refractory nature and high thermal conductivity at elevated temperatures. This research has focused on demonstrating the potential of liquid silicon infiltration (LSI) for making SiC to achieve this goal. The major advantage of this method over other ceramic processing techniques is the enhanced capability of making high dense, high purity SiC materials in complex net shapes. For successful formation of net shape SiC using LSI techniques, the carbon preform reactivity and pore structure must be controlled to allow the complete infiltration of the porous carbon structure which allows complete conversion of the carbon to SiC. We have established a procedure for achieving desirable carbon properties by using carbon precursors consisting of two readily available high purity organic materials, crystalline cellulose and phenolic resin. Phenolic resin yields a glassy carbon with low chemical reactivity and porosity while the cellulose carbon is highly reactive and porous. By adjusting the ratio of these two materials in the precursor mixtures, the properties of the carbons produced can be controlled. We have identified the most favorable carbon precursor composition to be a cellulose resin mass ratio of 6:4 for LSI formation of SiC. The optimum reaction conditions are a temperature of 1800 C, a pressure of 0.5 Torr of argon, and a time of 120 minutes. The fully dense net shape SiC material produced has a density of 2.96 g cm{sup -3} (about 92% of pure SiC) and a SiC volume fraction of over 0.82. Kinetics of the LSI SiC formation process was studied by optical microscopy and quantitative digital image analysis. This study identified six reaction stages and provided important understanding of the process. Although the thermal conductivity of pure SiC at elevated temperatures is very high, thermal conductivities of most commercial SiC materials are much lower due to phonon scattering by impurities (e.g., sintering aids located at the grain boundaries of these materials). The thermal conductivity of our SiC was determined using the laser flash method and it is 214 W/mK at 373 K and 64 W/mK at 1273 K. These values are very close to those of pure SiC and are much higher than those of SiC materials made by industrial processes. This SiC made by our LSI process meets the thermal properties required for use in high temperature heat exchanger. Cellulose and phenolic resin carbons lack the well-defined atomic structures associated with common carbon allotropes. Atomic-scale structure was studied using high resolution transmission electron microscopy (HRTEM), nitrogen gas adsorption and helium gas pycnometry. These studies revealed that cellulose carbon exhibits a very high degree of atomic disorder and angstrom-scale porosity. It has a density of only 93% of that of pure graphite, with primarily sp2 bonding character and a low concentration of graphene clusters. Phenolic resin carbon shows more structural order and substantially less angstrom-scale porosity. Its density is 98% of that of pure graphite, and Fourier transform analysis of its TEM micrographs has revealed high concentrations of sp3 diamond and sp2 graphene nano-clusters. This is the first time that diamond nano-clusters have been observed in carbons produced from phenolic resin. AC and DC electrical measurements were made to follow the thermal conversion of microcrystalline cellulose to carbon. This study identifies five regions of electrical conductivity that can be directly correlated to the chemical decomposition and microstructural evolution during carbonization. In Region I, a decrease in overall AC conductivity occurs due to the initial loss of the polar groups from cellulose molecules. In Region II, the AC conductivity starts to increase with heat treatment temperature due to the formation and growth of conducting carbon clusters. In Region III, a further increase of AC conductivity with increasing heat treatment temperature is obs
Bifunctional anion-exchange resins with improved selectivity and exchange kinetics
Disclosed herein are a class of anion exchange resins containing two different exchange sites with improved selectivity and sorptive capability for chemical species in solution, such as heptavalent technetium (as pertechnetate anion, TcO.sub.4.sup.-). The resins are prepared by first reacting haloalkylated crosslinked copolymer beads with a large tertiary amine in a solvent in which the resin beads can swell, followed by reaction with a second, smaller, tertiary amine to more fully complete the functionalization of the resin. The resins have enhanced selectivity, capacity, and exchange kinetics.
Alexandratos, Spiro D. (Knoxville, TN); Brown, Gilbert M. (Knoxville, TN); Bonnesen, Peter V. (Knoxville, TN); Moyer, Bruce A. (Oak Ridge, TN)
... a href http://www.nist.gov/public_affairs/images/Nanopore 20device.avi See video /a PHY, DARPA, spectroscopy See also http://www.nist.gov/pml ...
... from the bright glare in the distance transmit images of a cat-like face at ... Though false color has been added to the cats faces, they are otherwise ...
Qualification of aluminum for OTEC heat exchangers
The basis for qualification of aluminum as a material for use as tubing in Ocean Thermal Energy Conversion heat exchangers is reviewed. Reference is made to compendia of data from tests of aluminum alloys in natural sea water and to applicable service records. Data from these sources were found to be inadequate to either qualify or disqualify aluminum. They serve only to identify the 5052 alloy and Alclad 3003 or 3004 as being worthy of additional testing under conditions more directly related to what will be encountered in OTEC heat exchangers. The principal deficiency of data from long-time tests in natural sea water is that in almost all of these tests the specimens were exposed under static conditions that caused the surfaces to be covered by marine fouling organisms that would not be present in heat exchanger tubes. The tests did not take into account possible effects of periodic mechanical or chemical treatments to remove fouling or chemical treatments (chlorination) to prevent fouling. A current testing program sponsored by the Department of Energy through Argonne National Laboratory is designed to provide the needed data. Limited tests in high velocity sea water have indicated that aluminum tubes would tolerate the velocities under 10 ft (3 m) per second likely to be used in OTEC heat exchangers.
LaQue, F.L.
Heat Exchanger Fouling- Prediction, Measurement and Mitigation
The U. S. Department of Energy (DOE), Office of Industrial Programs (OIP) sponsors the development of innovative heat exchange systems. Fouling is a major and persistent cost associated with most industrial heat exchangers and nationally wastes an estimated 2.9 Quads per year. To predict and control fouling, three OIP projects are currently exploring heat exchanger fouling in specific industrial applications. A fouling probe has been developed to determine empirically the fouling potential of an industrial gas stream and to derive the fouling thermal resistance. The probe is a hollow metal cylinder capable of measuring the average heat flux along the length of the tube. The local heat flux is also measured by a heat flux meter embedded in the probe wall. The fouling probe has been successfully tested in the laboratory at flue gas temperatures up to 2200�F and a local heat flux up to 41,000 BTU/hr-ft2. The probe has been field tested at a coal-fired boiler plant. Future tests at a municipal waste incinerator are planned. Two other projects study enhanced heat exchanger tubes, specifically the effect of enhanced surface geometries on tube bundle performance. Both projects include fouling in a liquid heat transfer fluid. Identifying and quantifying the factors affecting fouling in these enhanced heat transfer tubes will lead to techniques to mitigate fouling.
Peterson, G. R.
Money Exchange Model and a general Outlook
The Kinetic Gas Theory like two-agent money exchange models, recently introduced in the Econophysics of Wealth distributions, are revisited. The emergence of Boltzmann-Gibbs like distribution of individual money to Pareto's law in the tail of the distribution is examined in terms of 2x2 Transition matrix with a general and simple oulook. Some additional interesting results are also reported.
Gupta, A K
Efficient numerical modeling of borehole heat exchangers
This paper presents a finite element modeling technique for double U-tube borehole heat exchangers (BHE) and the surrounding soil mass. Focus is placed on presenting numerical analyses describing the capability of a BHE model, previously reported, to ... Keywords: BHE, Geothermal heat pumps, Geothermic, Heat transfer, Space heating
R. Al-Khoury; T. K�lbel; R. Schramedei
Service Water Heat Exchanger Testing Guidelines
This report will assist the Service Water Heat Exchanger (SWHX) test engineer in designing specific test methods which define and constrain the analysis, operational and measurement strategies for each specific SWHX application. The resulting test methods will provide the necessary assurance that the results of tests are sufficiently representative of the true capability of the SWHX.
Heat exchanger Exergoeconomic lifecycle cost optimization
Considering lifecycle cost analysis during the design phase of thermal systems gives the design effort more worth. Furthermore thermodynamic exergetic optimization is proven to be useful method for determining the most lifecycle cost optimal design of ... Keywords: entropy generation, exergy destruction, heat exchanger, operating cost, optimization, thermodynamics
Liaquat Ali Khan; Ali El-Ghalban
LBNL-49339 MODELING PARTICLE DEPOSITION ON HVAC HEAT EXCHANGERS J.A. Siegel1,3 * and W.W. Nazaroff2 Department of Energy under contract DE-AC03-76SF00098. #12;MODELING PARTICLE DEPOSITION ON HVAC HEAT, such as discontinuities in the fins, are hypothesized to be responsible for the discrepancy. INDEX TERMS HVAC, Fouling
Thermal Analysis of LANL Ion Exchange Column
This document reports results from an ion exchange column heat transfer analysis requested by Los Alamos National Laboratory (LANL). The object of the analysis is to demonstrate that the decay heat from the Pu-238 will not cause resin bed temperatures to increase to a level where the resin significantly degrades.
Laurinat, J.E.
Forecasting foreign exchange rates using kernel methods
First, the all-important no free lunch theorems are introduced. Next, kernel methods, support vector machines (SVMs), preprocessing, model selection, feature selection, SVM software and the Fisher kernel are introduced and discussed. A hidden Markov ... Keywords: Forecasting, Foreign exchange, Kernel methods
Martin Sewell; John Shawe-Taylor
Heat exchanger with transpired, highly porous fins
The heat exchanger includes a fin and tube assembly with increased heat transfer surface area positioned within a hollow chamber of a housing to provide effective heat transfer between a gas flowing within the hollow chamber and a fluid flowing in the fin and tube assembly. A fan is included to force a gas, such as air, to flow through the hollow chamber and through the fin and tube assembly. The fin and tube assembly comprises fluid conduits to direct the fluid through the heat exchanger, to prevent mixing with the gas, and to provide a heat transfer surface or pathway between the fluid and the gas. A heat transfer element is provided in the fin and tube assembly to provide extended heat transfer surfaces for the fluid conduits. The heat transfer element is corrugated to form fins between alternating ridges and grooves that define flow channels for directing the gas flow. The fins are fabricated from a thin, heat conductive material containing numerous orifices or pores for transpiring the gas out of the flow channel. The grooves are closed or only partially open so that all or substantially all of the gas is transpired through the fins so that heat is exchanged on the front and back surfaces of the fins and also within the interior of the orifices, thereby significantly increasing the available the heat transfer surface of the heat exchanger. The transpired fins also increase heat transfer effectiveness of the heat exchanger by increasing the heat transfer coefficient by disrupting boundary layer development on the fins and by establishing other beneficial gas flow patterns, all at desirable pressure drops.
Kutscher, Charles F. (Golden, CO); Gawlik, Keith (Boulder, CO)
Plant Support Engineering: Guidance for Replacing Heat Exchangers at Nuclear Power Plants with Plate Heat Exchangers
This report is the first of a "suite" of guidelines that will enable licensees to be "intelligent customers" when faced with replacing major plant components like heat exchangers to support license renewal and plant life extension.
Multilateral Exchange of Energy Research Information
Office of Scientific and Technical Information (OSTI)
Member Countries. Link to larger image. Slide 4: Current ETDE Member Countries Brazil Canada Denmark Finland France Germany Korea, Republic of Mexico The Netherlands Norway...
Triple loop heat exchanger for an absorption refrigeration system
A triple loop heat exchanger for an absorption refrigeration system is disclosed. The triple loop heat exchanger comprises portions of a strong solution line for conducting relatively hot, strong solution from a generator to a solution heat exchanger of the absorption refrigeration system, conduit means for conducting relatively cool, weak solution from the solution heat exchanger to the generator, and a bypass system for conducting strong solution from the generator around the strong solution line and around the solution heat exchanger to an absorber of the refrigeration system when strong solution builds up in the generator to an undesirable level. The strong solution line and the conduit means are in heat exchange relationship with each other in the triple loop heat exchanger so that, during normal operation of the refrigeration system, heat is exchanged between the relatively hot, strong solution flowing through the strong solution line and the relatively cool, weak solution flowing through the conduit means. Also, the strong solution line and the bypass system are in heat exchange relationship in the triple loop heat exchanger so that if the normal flow path of relatively hot, strong solution flowing from the generator to an absorber is blocked, then this relatively, hot strong solution which will then be flowing through the bypass system in the triple loop heat exchanger, is brought into heat exchange relationship with any strong solution which may have solidified in the strong solution line in the triple loop heat exchanger to thereby aid in desolidifying any such solidified strong solution.
History Images
History Images History Images Los Alamos History in Images Los Alamos has a proud history and heritage of almost 70 years of science and innovation. The people of the Laboratory work on advanced technologies to provide the best scientific and engineering solutions to many of the nation's most crucial security challenges. Click thumbnails to enlarge. Photos arranged by most recent first, horizontal formats before vertical. See Flickr for more sizes and details. Back in the day Back in the day LA bridge in Los Alamos LA bridge in Los Alamos 1945 Army-Navy "E" Award 1945 Army-Navy "E" Award Louis Rosen Louis Rosen Bob Van Ness Robert Kuckuck and Michael Anastasio Bob Van Ness Robert Kuckuck and Michael Anastasio TA-18 TA-18 Elmer Island TU-4 assembly area Elmer Island TU-4 assembly area
University of Missouri Foreign Visitor
Nicaragua 47 78 Iran 46 79 Vanuatu 46 79 Azerbaijan 45 81 Belize 43 82 El Salvador 42 83 Honduras 42 83 81 0 25970 77 - 103 25x 33x Azerbaijan 81 74 45 55 35 7697 121 5 550 70 97 96 - - Bahamas 129 68 21 - - - - - - - - - Azerbaijan 81 6 26 49 - 10 2 3 22 - - Bahamas 129 - - - - - - - - - - Bahrain 142 6x 36 69 - 9 2 5 10
Zeng, Yong - Department of Mathematics and Statistics, University of Missouri
Policy Comparisons What about visitors?
capacity addition & maintenance · Tax reductions (gasoline & registration fees) · Investment in transit systems · Improvements in non-motorized modes (including bike lanes and sidewalks) · Special projects
Kockelman, Kara M.
Efficient password-based authenticated key exchange without public information
Since the first password-based authenticated key exchange (PAKE) was proposed, it has enjoyed a considerable amount of interest from the cryptographic research community. To our best knowledge, most of proposed PAKEs based on Diffie-Hellman key exchange ...
Jun Shao; Zhenfu Cao; Licheng Wang; Rongxing Lu
Plant Support Engineering: Heat Exchanger Tube Plugging Calculator
Many heat exchangers of various designs and construction are used in any power generating facility. The effect of inefficient heat exchangers can range from being a slow economic drain on the generation facility to completely shutting it down.
Nuclear Maintenance Applications Center: Heat Exchanger Maintenance Guide
This guide provides plant personnel with information on the operation, maintenance, and performance of heat exchangers. The contents of this guide will assist plant personnel in improving heat exchanger reliability, performance, and maintenance practices.
Exchange flow between open water and floating vegetation
This study describes the exchange flow between a region with open water and a region with a partial-depth porous obstruction, which represents the thermally-driven exchange that occurs between open water and floating ...
Zhang, Xueyan
BACKGROUND INFORMATION New York State Data Exchange Project
. · Provide recommendations to other state and federal environmental and public health agencies regarding between environmental and health agencies. Participating Organizations: New York State DepartmentBACKGROUND INFORMATION New York State Data Exchange Project New York State Data Exchange Project
Frictionally Modified Rotating Hydraulic Channel Exchange and Ocean Outflows
Laboratory experiments of two-layer exchange through channels of circular and half-circular cross section are described. Simple theoretical limits on exchange for the circular channels are obtained from models involving either friction or ...
Gregory C. Johnson; Daniel R. Ohlsen
air ? air ? part ? part FPI HVAC REFERENCES Anonymous, 1987,LBNL-47668 Fouling of HVAC Fin and Tube Heat ExchangersCIEE SPONSOR. FOULING OF HVAC FIN AND TUBE HEAT EXCHANGERS
Heat exchanger containing a component capable of discontinuous movement
Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while in a stationary position. Both rotary and modular heat exchangers are described. Also described are methods for transferring heat between a hot and cold fluid using the discontinuous movement of matrices. 11 figures.
Wilson, D.G.
Regenerative heat exchangers are described for transferring heat between hot and cold fluids. The heat exchangers have seal-leakage rates significantly less than those of conventional regenerative heat exchangers because the matrix is discontinuously moved and is releasably sealed while in a stationary position. Both rotary and modular heat exchangers are described. Also described are methods for transferring heat between a hot and cold fluid using the discontinuous movement of matrices.
Wilson, David G. (Winchester, MA)
Wilson, David Gordon (Winchester, MA)
Glass Ion Exchange: One Century of "Tough" Applications
... ion-exchange to glass components such as pharmaceutical packaging, transparent lightweight armor, transparencies for private vehicles, trains and aircrafts,�...
HIPAA 2013 - Security for One Exchange with Two sides
Page 1. SECURITY FOR ONE EXCHANGE WITH TWO SIDES Doreen Espinoza UHIN, Chief Business Development and Privacy Officer Page 2. ...
Modeling Direct and Inverse Problems in Ferritic Heat-Exchanger ...
Symposium, Data Analytics for Materials Science and Manufacturing. Presentation Title, Modeling Direct and Inverse Problems in Ferritic Heat- Exchanger Tubes.
Porous solid ion exchange wafer for immobilizing biomolecules
A porous solid ion exchange wafer having a combination of a biomolecule capture-resin and an ion-exchange resin forming a charged capture resin within said wafer. Also disclosed is a porous solid ion exchange wafer having a combination of a biomolecule capture-resin and an ion-exchange resin forming a charged capture resin within said wafer containing a biomolecule with a tag. A separate bioreactor is also disclosed incorporating the wafer described above.
Arora, Michelle B. (Woodridge, IL); Hestekin, Jamie A. (Morton Grove, IL); Lin, YuPo J. (Naperville, IL); St. Martin, Edward J. (Libertyville, IL); Snyder, Seth W. (Lincolnwood, IL)
Plate heat exchanger system largest in United States
This article focuses on the largest plate heat exchanger system in the USA having 70,000 sq. ft. of surface area. It is used as a sodium carbonate brine heat exchanger at the Kerr-McGee Chemical Corporation's Argus facility at Searles Valley in California's Mojave Desert. The heat interchange process and operation are discussed. Plate heat exchangers were found to be more cost effective than conventional heat exchangers in the process.
Canning, T. (Kerr-McGee Chemical Corp., Trona, CA); Regan, J.T.
Carbon Material Based Heat Exchanger for Waste Heat Recovery ...
Industrial processing plants Nuclear power Solar power ... Carbon Material Based Heat Exchanger for Waste Heat Recovery from Engine Exhaust Contact:
Safe Exchange Planner Tuomas Sandholm and Vincent Ferrandon
, the technique may also facilitate illegal trades of drugs, arms, porn, etc., where enforcement of the exchange
Guestrin, Carlos
Remarks from the Exchange Monitor Deterrence Summit | National...
Exchange Monitor Deterrence Summit | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency...
NNSA hosts Illinois emergency responders during technical exchange...
National Nuclear Security Administration (NNSA)
Illinois emergency responders during technical exchange meeting | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the...
Results are reported from in vivo and in vitro studies on the exchange of Mg/sup 2/ in erythrocytes of rats, dogs, cats, cattle, and man. Data are presented graphically. Results indicate that erythrocytes contain less Mg than other tissues and that Mg is very slowly exchanged. Possible mechanisms involved in Mg exchange are discussed. (C.H.)
Rogers, T.A.
Heat exchanger support apparatus in a fluidized bed
A heat exchanger is mounted in the upper portion of a fluidized combusting bed for the control of the temperature of the bed. A support, made up of tubes, is extended from the perforated plate of the fluidized bed up to the heat exchanger. The tubular support framework for the heat exchanger has liquid circulated therethrough to prevent deterioration of the support.
Lawton, Carl W. (West Hartford, CT)
Information quality, trust, and risk perceptions in electronic data exchanges
This study investigates the influence of information quality, trust and risk perceptions on the expected transaction performance of inter-organizational data exchanges and on the user intent to continue using the exchange. This study provides empirical ... Keywords: Competence-trust, Electronic transaction performance, Exchange-risk, Goodwill-trust, Information quality, Intent to use, Performance-risk
Andreas I. Nicolaou; Mohammed Ibrahim; Eric Van Heck
Comparative Studies on Micro Heat Exchanger Optimisation Tatsuya Okabe
Comparative Studies on Micro Heat Exchanger Optimisation Tatsuya Okabe , Kwasi Foli ¡ , Markus- timisation of a micro heat exchanger (¤ HEX). The trend to- wards miniaturisation has led to the use of micro devices in industry and technology. Micro heat exchangers have very high heat transfer surface area
Coello, Carlos A. Coello
Boundary geometric control of a counter-current heat exchanger
Boundary geometric control of a counter-current heat exchanger Ahmed MAIDIa , Moussa DIAFb , Jean control of a counter-current heat exchanger whose control is designed considering a model based on two. The objective consists in controlling the internal fluid temperature, at the heat exchanger outlet
ISHED1: Applying the LEM Methodology to Heat Exchanger Design
ISHED1: Applying the LEM Methodology to Heat Exchanger Design Kenneth A. Kaufman Ryszard S. Michalski MLI 00-2 #12;2 ISHED1: APPLYING THE LEM METHODOLOGY TO HEAT EXCHANGER DESIGN Kenneth A. Kaufman-2 January 2000 #12;ISHED1: APPLYING THE LEM METHODOLOGY TO HEAT EXCHANGER DESIGN Abstract Evolutionary
Michalski, Ryszard S.
INTEGRATED DESIGN AND CONTROL OF HEAT EXCHANGER NETWORKS #12; by Knut Wiig Mathisen A Thesis examples in their research attitudes. Truls also introduced me to heat exchanger networks, and has been have worked closely together with John Ulvøy on a paper on heat exchanger network synthesis
Skogestad, Sigurd
The Neural Heat Exchanger ``Invited Talk'' at ICONIP'96
The Neural Heat Exchanger ``Invited Talk'' at ICONIP'96 J¨urgen Schmidhuber IDSIA, Corso Elvezia 36 by the physical heat exchanger. Unlike backprop, it is entirely local. This makes its parallel implementation in written form. To fully understand the Neural Heat Exchanger's advantages and limitations, however, much
Schmidhuber, Juergen
Event Media Links Event Media Links Session 1: Technical Exchange Opening Topic Speaker PDF Podcast S01-01 Welcome T. Michalske, SRNL N/A Podcast S01-03 Introductions G. Flowers, SRNS N/A Podcast S01-04 Opening Remarks I. Triay, DOE-EM Presentation PDF Podcast S01-05 Status of Waste Processing Technology Development S. Schneider, DOE-EM Presentation PDF Podcast S01-06 Hanford/SRS Tank Waste Path Forward K. Subramanian/ T. Sams, SRR/WRPS Presentation PDF Podcast S01-07 Fluidized Bed Steam Reformer Overview B. Mason, TTT Presentation PDF Podcast S01-08 Next Generation Cesium Solvent B.Moyer/S. Fink/M. Geeting, ORNL/SRNL/SRR Presentation PDF Podcast S01-09 Rotary Microfilter Development/Small Column Ion Exchange D. Herman/ R. Edwards, SRNL/SRR Presentation PDF Podcast Session 2: Increased Waste Loading - Improved Current Processing
Growth of oxide exchange bias layers
An oxide (NiO, CoO, NiCoO) antiferromagnetic exchange bias layer produced by ion beam sputtering of an oxide target in pure argon (Ar) sputtering gas, with no oxygen gas introduced into the system. Antiferromagnetic oxide layers are used, for example, in magnetoresistive readback heads to shift the hysteresis loops of ferromagnetic films away from the zero field axis. For example, NiO exchange bia layers have been fabricated using ion beam sputtering of an NiO target using Ar ions, with the substrate temperature at 200.degree. C., the ion beam voltage at 1000V and the beam current at 20 mA, with a deposition rate of about 0.2 .ANG./sec. The resulting NiO film was amorphous.
Chaiken, Alison (Fremont, CA); Michel, Richard P. (Bloomington, MN)
Carbon nanotube heat-exchange systems
A carbon nanotube heat-exchange system (10) and method for producing the same. One embodiment of the carbon nanotube heat-exchange system (10) comprises a microchannel structure (24) having an inlet end (30) and an outlet end (32), the inlet end (30) providing a cooling fluid into the microchannel structure (24) and the outlet end (32) discharging the cooling fluid from the microchannel structure (24). At least one flow path (28) is defined in the microchannel structure (24), fluidically connecting the inlet end (30) to the outlet end (32) of the microchannel structure (24). A carbon nanotube structure (26) is provided in thermal contact with the microchannel structure (24), the carbon nanotube structure (26) receiving heat from the cooling fluid in the microchannel structure (24) and dissipating the heat into an external medium (19).
Hendricks, Terry Joseph (Arvada, CO); Heben, Michael J. (Denver, CO)
Multidimensional numerical modeling of heat exchangers. [LMFBR
A comprehensive, multidimensional, thermal-hydraulic model is developed for the analysis of shell-and-tube heat exchangers for liquid-metal services. For the shellside fluid, the conservation equations of mass, momentum, and energy for continuum fluids are modified using the concept of porosity, surface permeability and distributed resistance to account for the blockage effects due to the presence of heat-transfer tubes, flow baffles/shrouds, the support plates, etc. On the tubeside, the heat-transfer tubes are connected in parallel between the inlet and outlet plenums, and tubeside flow distribution is calculated based on the plenum-to-plenum pressure difference being equal for all tubes. It is assumed that the fluid remains single-phase on the shell side and may undergo phase-change on the tube side, thereby simulating the conditions of Liquid Metal Fast Breeder Reactor (LMFBR) intermediate heat exchangers (IHX) and steam generators (SG).
Sha, W.T.; Yang, C.I.; Kao, T.T.; Cho, S.M.
Conceptualizations for cleaning OTEC heat exchangers
A critical operating aspect of Ocean Thermal Energy Conversion (OTEC) plants is the maintenance of clean surfaces on the seawater-side of the heat exchangers. The objective of this program was to assess the state of the art of biofouling control techniques and to evaluate the potential of these existing methods for solving the biofouling problems in the OTEC system. The first task of the program involved an in-depth review and discussion of various fouling control methods including water treatment, surface conditioning, and cleaning techniques. The methods considered applicable to OTEC were identified. This volume summarizes the second task of the program. The compatibility of the various cleaning and fouling control techniques with the different proposed heat exchanger designs and materials are discussed. Also provided are conceptual illustrations for adapting and incorporating the methods into an OTEC power plant. These conceptual designs suggest means for overcoming some of the shortcomings of the techniques which are considered suitable, however, detailed designs of the modified systems are beyond the scope of this report. Chlorination, chemical cleaning, Amertap recirculating sponge rubber balls, and MAN flow-driven brushes are the methods considered applicable for tubular heat exchangers with seawater inside the tubes. Water jets are suggested for the open-cycle and the ''trombone'' (Applied Physics Laboratory) heat exchanger designs. Although none of the methods are immediately applicable to OTEC in their present configuration, in several cases only minor developmental efforts should produce designs which can satisfy the stringent OTEC cleanliness requirements. Further research and development appear warranted for a number of other methods which indicate promise for long-range applicability. Specific recommendations are included.
Rice, M.S.; Hagel, D.; Conn, A.F.
MGCR HEAT EXCHANGER TEST PROGRAM. Final Report
The Maritime Gas-cooled Reactor (MGCR) project has conipleted the study and design of a closed-cycle gasturbine propulsion plant utilizing a helium- cooled nuclear reactor as the heat source. The cycle employs a counterflow shell- and-tube regenerator to attain a high thermodynamic cycle efficiency. A heat exchanger test program was conducted to compile and correlate sufficient experimental data for the aerodynamic and thermal design of the prototype regenerator. The model heat exchanger was similar in configaration to the prototype unit. The pressure-drop and heat-transfer performance of a compact parallel-flow tube bundle is given hoth in the unsupported configuration and with airfoil-shaped tube supports distributed along the bundle. The Fanning friction factor with the airfoil-shaped supports is approximately 70% greater than for the unsupported tube configuration. The airfoil supports effect a 40% increase in Colburn's heat transfer factor, j, over the unsupported configuration. Determinations of the unsupported-tube values of friction factor and Colburn-j agreed well with the literature. A section is devoted to the application of these data to the design of exchangers. The correlated data, representing some 1200 individual runs, cover a range of Reynolds number from 10,000 to 500,000. The moderate pressure-drop increment due to the airfoil-shaped supports, in conjunction with the favorable increase in heat-transfer rate, becomes especially important in the design of compact gas-to-gas heat exchangers with very low friction pressure losses. The concluding section of the report compares the size, weight, and cost of conventional baffled-shell units and the MGCR design for the requirements of the MGCR cycle. The MGCR design was one-fifth the volume, one-fourth the weight, and one-third the cost of comparable baffled-shell units. (auth)
Paulson, H.C. II
Recovery of boric acid from ion exchangers
The recovery of boric acid from an anion exchange resin is improved by eluting the boric acid with an aqueous solution of ammonium bicarbonate. The boric acid can be readily purified and concentrated by distilling off the water and ammonium bicarbonate. This process is especially useful for the recovery of boric acid containing a high percentage of .sup.10 B which may be found in some nuclear reactor coolant solutions.
Pollock, Charles W. (Richland, WA)
Economic Models with Chaotic Money Exchange
This paper presents a novel study on gas-like models for economic systems. The interacting agents and the amount of exchanged money at each trade are selected with different levels of randomness, from a purely random way to a more chaotic one. Depending on the interaction rules, these statistical models can present different asymptotic distributions of money in a community of individuals with a closed economy.
Pellicer-Lostao, Carmen
Sample Exchange Evaluation (SEE) Report - Phase II
This report describes the results from Phase II of the Sample Exchange Evaluation (SEE) Program, a joint effort to compare analytical laboratory performance on samples from the Hanford Site`s high-level waste tanks. In Phase II, the program has been expanded to include inorganic constituents in addition to radionuclides. Results from Phase II that exceeded 20% relative percent difference criteria are identified.
Winters, W.I.
Catalysis using hydrous metal oxide ion exchangers
In a process which is catalyzed by a catalyst comprising an active metal on a carrier, said metal being active as a catalyst for the process, an improvement is provided wherein the catalyst is a hydrous, alkali metal or alkaline earth metal titanate, zirconate, niobate or tantalate wherein alkali or alkaline earth metal cations have been exchanged with a catalytically effective amount of cations of said metal.
Dosch, R.G.; Stephens, H.P.; Stohl, F.V.
Catalysis using hydrous metal oxide ion exchanges
Dosch, Robert G. (Albuquerque, NM); Stephens, Howard P. (Albuquerque, NM); Stohl, Frances V. (Albuquerque, NM)
Dealing with Uncertainties During Heat Exchanger Design
Over the last thirty years much progress has been made in heat exchanger design methodology. Even so, the design engineer still has to deal with a great deal of uncertainty. Whilst the methods used to predict heat transfer coefficients are now quite sophisticated and take account of many physical factors, the results they yield are still inaccurate. Physical property information is required for the estimation of heat transfer coefficients. Available information is often of dubious accuracy. Even given accurate properties modern methods for the predictions of tube-side heat transfer coefficient can be expected to have an accuracy of only � 10%. For the shell-side, higher errors (say, around �15%) can be expected. Perhaps worst of all, comes the specification of fouling resistance (the allowance made for the thermal resistance presented by dirt layers deposited on the heat exchanger tubes). In most instances there is little science or understanding behind the specification of these resistances. Traditionally there have been two approaches to dealing with these uncertainties: over-specification of fouling resistance; and, addition of 'design margin' (i.e. addition of extra surface area). There are cases in which both approaches are adopted. The engineer specifying the required duty provides a higher than necessary fouling resistance whilst the exchanger designer adds design margin! Both approaches result in 'over-design'.
Polley, G. T.; Pugh, S. J.
Preliminary SP-100/Stirling heat exchanger designs
Analytic modeling of several heat exchanger concepts to couple the SP-100 nuclear reactor lithium loop and the Space Stirling Power Convertor (SSPC) was performed. Four 25 kWe SSPC`s are used to produce the required 100 kW of electrical power. This design work focused on the interface between a single SSPC and the primary lithium loop. Manifolding to separate and collect the four channel flow was not modeled. This work modeled two separate types of heat exchanger interfaces (conductive coupling and radiative coupling) to explore their relative advantages and disadvantages. The minimum mass design of the conductively coupled concepts was 18 kg or 0.73 kg/kWe for a single 25 kWe convertor. The minimum mass radiatively coupled concept was 41 kg or 1.64 kg/kWe. The direct conduction heat exchanger provides a lighter weight system because of its ability to operate the Stirling convertor evaporator at higher heat fluxes than those attainable by the radiatively coupled systems. Additionally the conductively coupled concepts had relatively small volumes and provide potentially simpler assembly. Their disadvantages were the tight tolerances and material joining problems associated with this refractory to superalloy interface. The advantages of the radiatively coupled designs were the minimal material interface problems.
Schmitz, P.; Tower, L. [Sverdrup Technology, Inc., Brook Park, OH (United States). Lewis Research Center Group; Dawson, R. [Aerospace Design and Fabrication Inc., Brook Park, OH (United States); Blue, B.; Dunn, P. [National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
EM Waste Processing Technical Exchange 2010 Agenda EM Waste Processing Technical Exchange 2010 Agenda (Sponsored by EM Office of Waste Processing) November 16 - 18, 2010; Loews Hotel, Atlanta, GA 11/2/2010 Monday, November 15, 2010 5:00 - 7:00 pm Early Registration and Speaker Check-in *Light Refreshments Tuesday Morning, November 16, 2010 Session 1: Technical Exchange Opening (Chair: W. Wilmarth); Salon D Live Webcast Click the video icon to view Session 1 Live Webcast Submit Question Click the Question icon to submit a question. Time Topic Speaker 7:00 am Registration and Check-in 8:00 am S01-01 Welcome T. Michalske, SRNL 8:05 am S01-02 Opening Comments Y. Collazo, DOE-EM 8:15 am S01-03 Introductions G. Flowers, SRNS 8:20 am S01-04 Opening Remarks I. Triay, DOE-EM 8:45 am S01-05 Status of Waste Processing Technology Development
Oxide dispersion strengthened (ODS) alloys (e.g. the INCOLOY{reg_sign} MA956 alloy) are known for their excellent high temperature properties and are prime candidate materials for the construction of very high temperature heat exchangers that will be used in Vision 21 power plants. The main limitation of these materials is their poor weldability. Commercially available ODS tubing also tends to exhibit relatively poor circumferential creep strength due to current processing practices resulting in a fine grain size in the transverse direction. Thus far, these two characteristics of the ODS tubing have restricted its use to mostly non-pressure containing applications. The objectives of this program are to develop: (a) an MA956 tube with sufficient circumferential creep strength for long term use as heat exchanger tubing for very high temperatures; (b) a welding technique(s) for producing adequate joints between an MA956 tube and an MA956 tube, and an MA956 tube and an INCONEL 601 tube; (c) the bending strain limits, below which recrystallization will not occur in a MA956 tube during normal operation; and (d) the high temperature corrosion limits for the MA956 alloy with respect to working-fluid side and fireside environments. Also, this program seeks to generate data for use by heat exchanger designers and the ASME Boiler and Pressure Vessel Code, and perform an analysis of the mechanical property, tube bending, and corrosion data in order to determine the implications on the design of a very high temperature heat exchanger (T>1093 C/2000 F). After one year, work is currently being conducted on increasing the circumferential strength of a MA956 tube, developing joining techniques for this material, determining the tube bending strain limits, and establishing the high temperature corrosion parameters for the MA956 alloy in environments expected to be present in Vision 21 power plants. Work in these areas will is continuing into the next fiscal year, with success anticipated to produce innovative developments that will allow the reliable use of ODS alloys for heat exchanger tubing, as well as a variety of applications previously not possible with metallic materials.
Harper, Mark A.
Imaging bolometer
Radiation-hard, steady-state imaging bolometer. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas.
Wurden, Glen A. (Los Alamos, NM)
Radiation-hard, steady-state imaging bolometer is disclosed. A bolometer employing infrared (IR) imaging of a segmented-matrix absorber of plasma radiation in a cooled-pinhole camera geometry is described. The bolometer design parameters are determined by modeling the temperature of the foils from which the absorbing matrix is fabricated by using a two-dimensional time-dependent solution of the heat conduction equation. The resulting design will give a steady-state bolometry capability, with approximately 100 Hz time resolution, while simultaneously providing hundreds of channels of spatial information. No wiring harnesses will be required, as the temperature-rise data will be measured via an IR camera. The resulting spatial data may be used to tomographically investigate the profile of plasmas. 2 figs.
Wurden, G.A.
HVAC Radial Air Bearing Heat Exchangers Research Project | Department of
Radial Air Bearing Heat Exchangers Radial Air Bearing Heat Exchangers Research Project HVAC Radial Air Bearing Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) radial air bearing heat exchangers. Rotary air bearing heat exchanger technology simultaneously solves four long standing problems of conventional "fan-plus-finned-heat-sink" heat exchangers. Project Description This project seeks to design, fabricate, and test successive generations of prototype radial air bearing heat exchanger devices based on lessons learned and further insights into device optimization, computational fluid dynamic studies for parametric optimization and determination of scaling laws, and laboratory measurement of flow field and heat transfer
Expanded microchannel heat exchanger: design, fabrication and preliminary experimental test
This paper first reviews non-traditional heat exchanger geometry, laser welding, practical issues with microchannel heat exchangers, and high effectiveness heat exchangers. Existing microchannel heat exchangers have low material costs, but high manufacturing costs. This paper presents a new expanded microchannel heat exchanger design and accompanying continuous manufacturing technique for potential low-cost production. Polymer heat exchangers have the potential for high effectiveness. The paper discusses one possible joining method - a new type of laser welding named "forward conduction welding," used to fabricate the prototype. The expanded heat exchanger has the potential to have counter-flow, cross-flow, or parallel-flow configurations, be used for all types of fluids, and be made of polymers, metals, or polymer-ceramic precursors. The cost and ineffectiveness reduction may be an order of magnitude or more, saving a large fraction of primary energy. The measured effectiveness of the prototype with 28 micro...
Denkenberger, David C; Pearce, Joshua M; Zhai, John; 10.1177/0957650912442781
Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger
Radial Air Bearing Radial Air Bearing Heat Exchanger Research Project to someone by E-mail Share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Facebook Tweet about Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Twitter Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Google Bookmark Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Delicious Rank Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on Digg Find More places to share Building Technologies Office: HVAC Radial Air Bearing Heat Exchanger Research Project on AddThis.com... About Take Action to Save Energy Partner with DOE
2012 National Trainers' Exchange for Department of Energy Safety and
National Trainers' Exchange for Department of Energy Safety National Trainers' Exchange for Department of Energy Safety and Health Trainers 2012 National Trainers' Exchange for Department of Energy Safety and Health Trainers Workshop Dates: May 7-8, 2012 The National Institute of Environmental Health Sciences Worker Education and Training Program (NIEHS WETP) hosted the first National Trainers' Exchange for Department of Energy (DOE) safety and health trainers on May 7-8, 2012 in Knoxville, TN. Over 100 participants attended the Trainers' Exchange to share and exchange best practices and techniques on how to create more effective and empowering training. The Conference was funded under its DOE Nuclear Worker Training Program. A trainers' exchange is designed for trainers to share best practices and new techniques through a series of workshops conducted by the trainers
Anion Exchange Membranes - Transport/Conductivity
Fundamental understanding Fundamental understanding * Driving membranes towards applications Anion Exchange Membranes - Transport/Conductivity High Priority * A need for a standard/available AEM (similar to Nafion in PEMs) * Define standard experimental conditions and protocols * A need for much more fundamental studies in transport mechanisms and mechanical properties * A need to develop much more new AEMs with alternative chemistries (new cation and backbone chemistries) Fundamental Studies * TRANSPORT * Conductivity (pure OH - hard to measure) * Water content, λ * Diffusion coefficients, NMR * Drag coefficients * Transference * Solubility * Fundamental transport mechanisms for anion and water transport * Computational Modeling * MORPHOLOGY/CHEMISTRY * Vibrational Spectroscopy: FTIR, Raman
Heat exchanger with auxiliary cooling system
A heat exchanger with an auxiliary cooling system capable of cooling a nuclear reactor should the normal cooling mechanism become inoperable. A cooling coil is disposed around vertical heat transfer tubes that carry secondary coolant therethrough and is located in a downward flow of primary coolant that passes in heat transfer relationship with both the cooling coil and the vertical heat transfer tubes. A third coolant is pumped through the cooling coil which absorbs heat from the primary coolant which increases the downward flow of the primary coolant thereby increasing the natural circulation of the primary coolant through the nuclear reactor.
Coleman, John H. (Salem Township, Westmoreland County, PA)
Charge exchange processes involving iron ions
A review and evaluation is given of the experimental data which are available for charge exchange processes involving iron ions and neutral H, H/sub 2/ and He. Appropriate scaling laws are presented, and their accuracy estimated for these systems. A bibliography is given of available data sources, as well as of useful data compilations and review articles. A procedure is recommended for providing single approximate formulae to the fusion community to describe total cross sections for electron capture by partially-stripped Fe/sup q+/ ions in collisions with H, H/sub 2/ and He, based on the scaling relationships suggested by Janev and Hvelplund.
Phaneuf, R.A.
Electricity exchanges across international borders - 1983
This report summarizes the electricity exchanges between the US and Mexico and Canada during calendar year 1983. The construction, operation and maintenance of any electric transmission facility which crosses an international border of the United States requires a Presidential Permit. These permits have been granted by the Department of Energy (DOE) since its formation in 1977. Between 1953 and 1977, these permits were issued by the former Federal Power Commission. Prior to 1953, they were issued by the President of the United States. Presidential Permits require that an annual report be filed by the permit holder detailing all transactions with the foreign country.
Condensing Heat Exchangers Optimize Steam Boilers
The development of fluorocarbon resin covered tubes has advanced to the point where full scale marketing in connection with condensing heat exchangers has begun. Field installations show simple paybacks of one to one and a half years with resulting steam boiler fuel to steam efficiencies in excess of 90%. The studies and evaluations done to date indicate that units of this type will be cost effective in sizes ranging from 10,000 to 300,0000 steam per hour as long as cold makeup water is available for preheating with the waste flue gases.
Sullivan, B.; Sullivan, P. A.
Ceramic heat exchangers: manufacturing techniques and performance
The objective of the ceramic heat pipe program being conducted at Los Alamos is demonstration of the practical feasibility of this technology for the solution of severe high temperature recuperation functions. Ceramic heat pipe recuperators have been theoretically shown to offer distinct advantages over conventional ceramic heat exchangers from the standpoint of efficiency of heat recuperation and economics. The main stumbling block to their widespread utilization is related to the problems of materials for construction and the details of fabrication and assembly. The performance objectives of ceramic heat pipes and some aspects of the materials technology program aimed at solving the problem of economic ceramic heat pipe fabrication are described.
Merrigan, M.A.; Sandstrom, D.J.
Heat exchanger for a Stirling engine
A heat exchanger is described for a Stirling engine comprising: a domed cylinder having a domed portion and a cylindrical portion. The domed cylinder serves as a high-temperature cylinder and a regenerator housing of the Stirling engine; a cylindrical inner liner which is coaxially disposed inside the domed cylinder and which divides the inside of the domed cylinder into an expansion space inside of the inner liner and a regenerator space between the outer surface of the inner liner and the inner surface of the cylindrical portion of the domed cylinder.
Fujiwara, M.; Nomaguchi, T.; Kazumoto, Y.; Tsuchino, K.; Kawajiri, K.; Hisamori, Y.
B Plant ion exchange feed line leak
>One of the objectives of the Waste Management Program is to separate the long-lived heat emitter /aup 137/Cs from the bulk of the high-level Iiquid wastes. This separation is accomplished by the ion exchange process in the 221-B Building. Interim storage of the cesium is in solution as a nitrate. The feed for the B Plant cesinm ion exchange process is pumped from the lag storage tank, 105-C, through a pipeline and several diversion boxes to the 221-B Building. On December 19, 1969, a leak was discovered near the 241-C-152 diversion box in the section of this line, V-122, from the 105-C tank. Although the leak represented a loss of feed for the processing of /sup 137/Cs, more important was the consequence of environmental contmination to the soil from the line leak. For this reason, an investigation was made to estblish the extent of the radioactivity spread. The results of a well drilling operation undertaken to define the boundary and to estimate the extent of the leak are summarized. (CR)
Tanaka, K.H.
Waste treatment by selective mineral ion exchanger
STMI, subsidiary company of the AREVA Group with over 40 years in the D and D business, has been continuously innovating and developing new decontamination techniques, with the objectives of achieving more efficient decontaminations on a growing spectrum of media. In the field of liquid waste treatment, STMI manufactures uses and commercialises selective inorganic ion exchangers (RAN). These are hydrated synthetic inorganic compounds prepared from very pure raw materials. Different types of RANs (POLYAN, OXTAIN, Fe-Cu, Fe-CoK, Si-Fe-CoK) can be used to trap a large number of radioactive elements in contaminated effluents. Different implementations could be applied depending on technical conditions. STMI's offers consist in building global solution and preliminary design of installation either in dispersed form (batch) or in column (cartridge filtration). Those products are used all over the world not only in the nuclear business (Canada, US, Belgium, France...) but also in other fields. Indeed, it provides competitive solutions to many domains of application especially water pollution control, liquid waste treatment in the nuclear business by decreasing the activity level of waste. The following paper will focus on the theoretical principle of the mineral exchanger, its implementation and the feed back collected by STMI. (author)
Polito, Aurelie [Areva NC - BUA STMI, 1 route de la Noue - 91196 Gif sur Yvette, Cedex (France)
Twice-iterated boson-exchange scattering amplitudes
We calculate at two-loop order the complex-valued scattering amplitude related to the twice-iterated scalar-isovector boson-exchange between nucleons. In comparison to the once-iterated boson-exchange amplitude it shows less dependence on the scattering angle. We calculate also the iteration of the (static) irreducible one-loop potential with the one-boson exchange and find similar features. Together with the irreducible three-boson exchange potentials and the two-boson exchange potentials with vertex corrections, which are also evaluated analytically, our results comprise all nonrelativistic contributions from scalar-isovector boson-exchange at one- and two-loop order. The applied methods can be straightforwardly adopted to the pseudoscalar pion with its spin- and momentum-dependent couplings to the nucleon.
N. Kaiser
Lateral Capacity Exchange and Its Impact on Capacity Investment Decisions
We study the problem of capacity exchange between two �rms in anticipation of the mismatch between demand and capacity and its impact on �rm�s capacity investment decisions. For given capacity investment levels of the two �rms, we demonstrate how capacity price may be determined and how much capacity should be exchanged when either manufacturer acts as a Stackelberg leader in the capacity exchange game. By benchmarking against the centralized system, we show that a side payment may be used to coordinate the capacity exchange decisions. We then study the �rms�capacity investment decisions using a biform game framework in which capacity investment decisions are made individually and exchange decisions are made as in a centralized system. We demonstrate the existence and uniqueness of the Nash equilibrium capacity investment levels and study the impact of �rms�share of the capacity exchange surplus on their capacity investment levels.
Amiya K. Chakravartyz; Jun Zhangy
The Energy Impact of Industrial Recycling and Waste Exchange
Recycling and waste exchange, particularly in the industrial sector, has a substantial positive energy impact and one that can often be accomplished at little or no expense. Recycling saves energy because the secondary materials being recycled are "pre-processed", and this requires less manufacturing operations than creating products from virgin materials. Process energy reduction possible by recycling is estimated to be as high is 95% for aluminum and 88% for plastics. Industrial waste exchange is facilitated by having an independent agency to publicize and coordinate materials availability and exchange. The North Carolina Energy Division is a co-sponsor of one such agency, the Southeast Waste Exchange in Charlotte, and has funded workshops on the recycling-energy connection and waste minimization. Although the paper, plastic and glass familiar to residential recyclers are also exchanged at the industrial level, in addition, industrial waste exchange deals extensively with solvents, oils, acids and alkalis and other specialty substances.
Phillips, W. C.
HVAC Optimized Heat Exchangers Research Project | Department of Energy
Optimized Heat Exchangers Research Optimized Heat Exchangers Research Project HVAC Optimized Heat Exchangers Research Project The U.S. Department of Energy is currently conducting research into heating, ventilation, and air conditioning (HVAC) optimized heat exchangers. The information generated in this study will demonstrate performance improvements that can be achieved through optimization of refrigerant circuitry for non-uniform inlet air distribution. The tubing circuitry on fin-tube heat exchangers used in residential space-conditioning systems is typically designed assuming uniform airflow through the finned passageways. However, the air flow in installed systems is highly non-uniform, resulting in mismatched refrigerant-air heat transfer that reduces the capacity of the heat exchanger and efficiency of
IEA Energy Technology Data Exchange | Open Energy Information
IEA Energy Technology Data Exchange IEA Energy Technology Data Exchange Jump to: navigation, search Tool Summary Name: IEA Energy Technology Data Exchange Agency/Company /Organization: International Energy Agency Sector: Energy Topics: Technology characterizations Resource Type: Dataset Website: www.etde.org/ References: IEA Energy Technology Data Exchange[1] Mission "ETDE's mission is: "To provide governments, industry and the research community in the member countries with access to the widest range of information on energy research, science and technology and to increase dissemination of this information to developing countries."" References ↑ "IEA Energy Technology Data Exchange" Retrieved from "http://en.openei.org/w/index.php?title=IEA_Energy_Technology_Data_Exchange&oldid=32878
SPR Awards Exchange Contract to Shell Trading | Department of Energy
Awards Exchange Contract to Shell Trading Awards Exchange Contract to Shell Trading SPR Awards Exchange Contract to Shell Trading May 10, 2007 - 12:55pm Addthis Deliveries to Begin in August WASHINGTON, DC - The U.S. Department of Energy (DOE) today awarded a contract to Shell Trading for exchange of 8.7 million barrels of royalty oil produced from the Gulf Coast for crude oil meeting the quality specifications of the Strategic Petroleum Reserve (SPR). The exchange oil will be delivered to two SPR sites, West Hackberry, Louisiana and Bryan Mound, Texas. The offer submitted by Shell Trading represented the highest value of specification-grade oil for the Reserve. Deliveries are expected to begin in August 2007 at a modest rate of approximately 50,000 barrels per day for a period of six months. The contract terms apply royalty-in-kind exchange provisions that require
FM DANTE fast imaging and variations: emerging rf-based ultrafast imaging techniques
Keywords: DANTE fast imaging, NMR, burst imaging, fast chemical shift imaging, fast imaging, fast spectroscopic imaging, fast susceptibility imaging
Z. H. Cho; Y. M. Ro; I. K. Hong
Heat exchanger and water tank arrangement for passive cooling system
A water storage tank in the coolant water loop of a nuclear reactor contains a tubular heat exchanger. The heat exchanger has tubesheets mounted to the tank connections so that the tubesheets and tubes may be readily inspected and repaired. Preferably, the tubes extend from the tubesheets on a square pitch and then on a rectangular pitch therebetween. Also, the heat exchanger is supported by a frame so that the tank wall is not required to support all of its weight.
Gillett, James E. (Greensburg, PA); Johnson, F. Thomas (Baldwin Boro, PA); Orr, Richard S. (Pittsburgh, PA); Schulz, Terry L. (Murrysville Boro, PA)
Self-defrosting recuperative air-to-air heat exchanger
A heat exchanger includes a stationary spirally or concentrically wound heat exchanger core with rotating baffles on upper and lower ends thereof. The rotating baffles include rotating inlets and outlets which are in communication with respective fixed inlets and outlets via annuli. The rotation of the baffles causes a concurrent rotation of the temperature distribution within the stationary exchanger core, thereby preventing frost build-up in some applications and preventing the formation of hot spots in other applications.
Drake, Richard L. (Delmar, NY)
The Energy Efficiency Exchange Website | Open Energy Information
The Energy Efficiency Exchange Website The Energy Efficiency Exchange Website Jump to: navigation, search Tool Summary LAUNCH TOOL Name: The Energy Efficiency Exchange Website Focus Area: Other Energy Efficiency Topics: Training Material Website: eex.gov.au/ Equivalent URI: cleanenergysolutions.org/content/energy-efficiency-exchange-website Language: English Policies: "Deployment Programs,Financial Incentives" is not in the list of possible values (Deployment Programs, Financial Incentives, Regulations) for this property. DeploymentPrograms: Retrofits This online joint initiative of Australia's national, state, and territorial governments aims to support the development and implementation of energy management and energy efficiency strategies among medium to large businesses. The website accomplishes this by providing information from
Very preliminary. Please do not quote. EXCHANGE RATES AND FUNDAMENTALS
Standard economic models hold that exchange rates are influenced by fundamental variables such as relative money supplies, outputs, inflation rates and interest rates. Nonetheless, it has been well documented that such variables little help predict changes in floating exchange rates � that is, exchange rates follow a random walk. We show that the data do exhibit a related link suggested by standard models � that the exchange rate helps predict fundamentals. We also show analytically that in a rational expectations present value model, an asset price manifests near random walk behavior if fundamentals are I(1) and the factor for discounting future fundamentals is near one. We suggest that this may apply to exchange rates. We thank Shiu-Sheng Chen and Akito Matsumoto for research assistance, and the National Science Foundation for financial support. A longstanding puzzle in international economics is the difficulty of tying floating exchange rates to macroeconomic fundamentals such as money supplies, outputs, and interest rates. Our theories state that the exchange rate is determined by such fundamental variables, but floating exchange rates between countries with roughly similar inflation rates are in fact well-approximated as random walks. Fundamental variables do not help predict future changes in exchange rates.
Heat Exchangers Fouling and Corrosion-A Detailed Investigation
Presentation Title, Aluminum Smelter Waste Heat Recovery Plant (Heat Exchangers Fouling and Corrosion-A Detailed Investigation). Author(s), Hadi Fanisalek,�...
Design with Constructal Theory: Steam Generators, Turbines and Heat Exchangers.
?? This dissertation shows that the architecture of steam generators, steam turbines and heat exchangers for power plants can be predicted on the basis of� (more)
Kim, Yong Sung
Ion Exchanged Mixed Glass Cullet Proppants for Stimulation of Oil ...
Symposium, Glass and Optical Materials. Presentation Title, Ion Exchanged Mixed Glass Cullet Proppants for Stimulation of Oil and Natural Gas Bearing Shales.
Ion-Exchanged Glass with High Damage Resistance
Ion Exchanged Mixed Glass Cullet Proppants for Stimulation of Oil and Natural Gas Bearing Shales � Modeling the Electrical Conductivity in Glass Melts.
Ion Concentration and Stress Profile Modifications of Ion Exchanged ...
An Innovative Compact Heat Exchanger Solution for Aluminium Off ...
Presentation Title, An Innovative Compact Heat Exchanger Solution for Aluminium Off-Gas Cooling and Heat Recovery. Author(s), El Hani Bouhabila, Erling�...
Investigation on a Microwave High-Temperature Air Heat Exchanger
In present paper, an energy efficient air heat exchanger, based on accumulation of the heat generated by microwave absorbing materials is presented according �...
Thermal design of heat exchanger for a swimming pool.
??This paper tells about what is a heat exchanger made of in terms of thermal analysis and the important tools and factors which play vital� (more)
Teka, Addisu
Promote your ability to exchange data with Portfolio Manager...
STAR help your business? Get started Help your clients improve energy performance with ENERGY STAR Earn recognition for your company Use web services to exchange data with...
List of Organizations that Exchange Data with Portfolio Manager...
gas emissions. Click here for the ENERGY STAR List of Organizations that Exchange Data with Portfolio Manager. Energy Efficient Products Learn about ENERGY STAR Products...
Oxygen Exchange Kinetics on SOFC Cathode Materials: Importance ...
Presentation Title, Oxygen Exchange Kinetics on SOFC Cathode Materials: Importance of Ionic and Electronic Carriers. Author(s), Rotraut Merkle, Lei Wang,
Analysis of a heat exchanger-thermoelectric generator system
Analysis of a thermoelectric generator (TEG) in an ocean thermal energy conversion (OTEC) application is presented. An analytic model is developed for describing the heat exchanger-TEG interactions. This model is used to illustrate limitations of applying conventional fixed junction temperature assumptions to systems experiencing significant temperature drops across the heat exchanger surfaces. Design methods are developed for determining the thermoelectric element geometry that produces maximum output power. Results show that a heat exchanger-TEG system may deliver about 100 W/m/sup 2/ of heat exchanger surface. This compares favorably with conventional OTEC schemes.
Henderson, J.
The Department of Energy is hosting a technical exchange in ...
The Department of Energy is hosting a technical exchange in Denver, CO. Over the past seven years, personnel from the three sites, Savannah River/Hanford/Idaho along ...
Polymeric Electrolytes and Catalysts for Anion-Exchange-Membrane ...
Alternatively, our newly developed solid anion-exchange-membrane fuel cells ( AEMFCs) have several intrinsic advantages to PEMFCs including: 1) more�...
Program Sustainability Peer Exchange Call: Transitioning to a...
January 17, 2013 Program Sustainability Peer Exchange Call: Transitioning to a Utility Funded Program Environment: What Do I Need To Know? Utility Funded Programming: What Do You...
Geothermal: Sponsored by OSTI -- Chapter 11. Heat Exchangers
GEOTHERMAL TECHNOLOGIES LEGACY COLLECTION - Sponsored by OSTI -- Chapter 11. Heat Exchangers Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log...
Available Technologies: Cation-Exchanged Variants of Zeolite LTA ...
Berkeley Lab scientists Tae-Hyun Bae and Jeffrey Long have found that cation-exchanged zeolites are outstanding materials for post-combustion carbon dioxide (CO2 ...
Use web services to exchange data with Portfolio Manager | ENERGY...
Service and product providers Use web services to exchange data with Portfolio Manager Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and...
Microchannel Heat Exchangers with Carbon Dioxide
The objective of the present study was to determine the performance of CO{sub 2} microchannel evaporators and gas coolers in operational conditions representing those of residential heat pumps. A set of breadboard prototype microchannel evaporators and gas coolers was developed and tested. The refrigerant in the heat exchangers followed a counter cross-flow path with respect to the airflow direction. The test conditions corresponded to the typical operating conditions of residential heat pumps. In addition, a second set of commercial microchannel evaporators and gas coolers was tested for a less comprehensive range of operating conditions. The test results were reduced and a comprehensive data analysis, including comparison with the previous studies in this field, was performed. Capacity and pressure drop of the evaporator and gas cooler for the range of parameters studied were analyzed and are documented in this report. A gas cooler performance prediction model based on non-dimensional parameters was also developed and results are discussed as well. In addition, in the present study, experiments were conducted to evaluate capacities and pressure drops for sub-critical CO{sub 2} flow boiling and transcritical CO{sub 2} gas cooling in microchannel heat exchangers. An extensive review of the literature failed to indicate any previous systematic study in this area, suggesting a lack of fundamental understanding of the phenomena and a lack of comprehensive data that would quantify the performance potential of CO{sub 2} microchannel heat exchangers for the application at hand. All experimental tests were successfully conducted with an energy balance within {+-}3%. The only exceptions to this were experiments at very low saturation temperatures (-23 C), where energy balances were as high as 10%. In the case of evaporators, it was found that a lower saturation temperature (especially when moisture condensation occurs) improves the overall heat transfer coefficient significantly. However, under such conditions, air side pressure drop also increases when moisture condensation occurs. An increase in airflow rate also increases the overall heat transfer coefficient. Air side pressure drop mainly depends on airflow rate. For the gas cooler, a significant portion of the heat transfer occurred in the first heat exchanger module on the refrigerant inlet side. The temperature and pressure of CO{sub 2} significantly affect the heat transfer and fluid flow characteristics due to some important properties (such as specific heat, density, and viscosity). In the transcritical region, performance of CO{sub 2} strongly depends on the operating temperature and pressure. Semi-empirical models were developed for predictions of CO{sub 2} evaporator and gas cooler system capacities. The evaporator model introduced two new factors to account for the effects of air-side moisture condensate and refrigerant outlet superheat. The model agreed with the experimental results within {+-}13%. The gas cooler model, based on non-dimensional parameters, successfully predicted the experimental results within {+-}20%. Recommendations for future work on this project include redesigning headers and/or introducing flow mixers to avoid flow mal-distribution problems, devising new defrosting techniques, and improving numerical models. These recommendations are described in more detail at the end of this report.
Zhao, Y.; Ohadi, M.M.; Radermacher, R.
Scintillating 99Tc Selective Ion Exchange Resins
Scintillating technetium (99Tc) selective ion exchange resins have been developed and evaluated for equilibrium capacities and detection efficiencies. These resins can be utilized for the in-situ concentration and detection of low levels of pertechnetate anions (99TcO4-) in natural waters. Three different polystyrene type resin support materials were impregnated with varying amounts of tricaprylmethylammonium chloride (Aliquat 336) extractant, several different scintillating fluors and wavelength shifters. The prepared resins were contacted batch-wise to equilibrium over a wide range of 99TcO4- concentrations in natural water. The measured capacities were used to develop Langmuir adsorption isotherms for each resin. 99Tc detection efficiencies were determined and up to 71.4 � 2.6% was achieved with some resins. The results demonstrate that a low level detection limit for 99TcO4- in natural waters can be realized.
Mitchell Greenhalgh; Richard D. Tillotson
Designing and troubleshooting plate heat exchangers
Since they were introduced in the 1930s, plate heat exchangers (PHE) have improved considerably, becoming both cost-effective and versatile. PHE models offer an economical alternative to the more-traditional shell-and-tube models, in a more compact size. However, to allow PHEs to achieve top efficiency and to minimize maintenance costs and downtime, design engineers must carefully consider operating conditions and potential maintenance requirements. Process engineers, in turn, must be aware of simple, but critical, troubleshooting techniques. This article will outline both specification and operating tips. The paper discusses plate depth and patterns, materials selection, gasket material, temperature and gasket life, glued or gluefree gaskets, opening the PHE, replacing the gaskets, plate inspection, closing the PHE, corrosion and erosion.
Sloan, M.D. [Alfa Laval Thermal, Inc., Richmond, VA (United States). Service Div.
Charge exchange recombination spectroscopy on fusion devices
For fusion, obtaining reliable measurements of basic plasma parameters like ion and electron densities and temperatures is a primary goal. For theory, measurements are needed as a function of time and space to understand plasma transport and confinement with the ultimate goal of achieving economic nuclear fusion power. Electron profile measurements and plasma spectroscopy for the plasma ions are introduced. With the advent of Neutral Beam auxiliary plasma heating, Charge Exchange Recombination Spectroscopy provides accurate and time resolved measurements of the ions in large volume fusion devices. In acknowledgement of Nicol Peacock's role in the development of these techniques, still at the forefront of plasma fusion research, this paper describes the evolution of this diagnostic method.
Duval, B. P. [Centre de Recherches en Physique des Plasmas, EPFL, Lausanne (Switzerland)
Split image optical display
A video image is displayed from an optical panel by splitting the image into a plurality of image components, and then projecting the image components through corresponding portions of the panel to collectively form the image. Depth of the display is correspondingly reduced.
Veligdan, James T. (Manorville, NY)
Geothermal direct contact heat exchange. Final report
A glass direct contact heat exchange column was operated in the laboratory. The column was operated at atmospheric pressure using hot water and normal hexane. Column internals testing included an empty column, sieve trays, disk-and-doughnut trays, and two types of packing. Operation was very smooth in all cases and the minimum temperature approaches varied from less than 1/sup 0/C for packing to 13/sup 0/C for the empty column. High heat transfer rates were obtained in all cases, however, columns should be sized on the basis of liquid and vapor traffic. The solubilities of hydrocarbons were determined for normal hexane, pentane and butane in water and sodium chloride and calcium chloride brines at various temperatures. The values seem to be internally consistent and salt content was found to depress hydrocarbon solubility. Laboratory stripping tests showed that gas stripping can be used to remove hydrocarbon from reject hot water from the direct contact heat exchange column. Although the gas volumes required are small, stripping gas requirements cannot be accurately predicted without testing. A computer program was used to study the effect of operating variables on the thermodynamic cycle efficiencies. Optimum efficiencies for the moderate brine conditions studied were obtained with isopentane as working fluid and relatively low operating pressure. A preliminary design for a 50 MWe plant was prepared and plant capital cost and operating cost were estimated. These costs were combined with previously developed brine production and power transmission costs to provide an estimate of the cost of delivered power for a geothermal field at Heber, California. A pilot plant program is described that would be suitable for continuing the investigation of the direct contact process in the field. The program includes a suggested schedule and the estimated cost.
Sims, A.V.
At-tank supplemental pretreatment including both filtration and small column ion exchange is currently under evaluation to facilitate salt waste retrieval and processing in the Hanford tank farms. Spherical resorcinol formaldehyde (sRF) resin is the baseline ion exchange resin for use in the Waste Treatment and Immobilization Plant (WTP). This document provides background and technical rationale to assist in determining whether spherical resorcinol formaldehyde (sRF) is also the appropriate ion exchange resin for supplemental LAW pretreatment processes and compares sRF with crystalline silicotitanate (CST) as potential supplemental pretreatment ion exchange media.
Exchange-Spring Magnets: Nanocomposite Exchange-Spring Magnets for Motor and Generator Applications
REACT Project: ANL will develop a cost-effective exchange-spring magnet to use in the electric motors of wind generators and EVs that uses no rare earth materials. This ANL exchange-spring magnet combines a hard magnetic outer shell with a soft magnetic inner core�coupling these together increases the performance (energy density and operating temperature). The hard and soft magnet composite particles would be created at the molecular level, followed by consolidation in a magnetic field. This process allows the particles to be oriented to maximize the magnetic properties of low-cost and abundant metals, eliminating the need for expensive imported rare earths. The ultimate goal of this project is to demonstrate this new type of magnet in a prototype electric motor.
Exchange of bonded hydrogen in amorphous silicon by deuterium
We show that bonded hydrogen in a-Si:H is readily exchanged by atomic deuterium when exposed to a deuterium plasma discharge. The effective diffusion coefficient for the D,H exchange 10/sup -14/ cm/sup 2//sec at 160/sup 0/C, is comparable to that of interstitial hydrogen in c-Si.
Abeles, B.; Yang, L.; Leta, D.P.; Majkrzak, C.F.
A cation exchange prccess is described for separating protactinium values from thorium values whereby they are initially adsorbed together from an aqueous 0.1 to 2 N hydrochloric acid on a cation exchange resin in a column. Then selectively eluting the thorium by an ammonium sulfate solution and subsequently eluting the protactinium by an oxalate solution.
Studier, M.H.; Sullivan, J.C.
A framework for password-based authenticated key exchange1
In this paper, we present a general framework for password-based authenticated key exchange protocols, in the common reference string model. Our protocol is actually an abstraction of the key exchange protocol of Katz et al. and is based on the recently ... Keywords: Passwords, authentication, dictionary attack, projective hash functions
Rosario Gennaro; Yehuda Lindell
An application of DCS device to a heat exchange process
In this paper, an application of distributed control system (DCS) device to a heat exchange process is shown. In details, first, nonlinear model and feedback tracking control scheme of a spiral heat exchange process are obtained. Second, the designed ... Keywords: DCS, nonlinear control, nonlinear model, right coprime factorization, robust stability
Junya Okazaki; Shengjun Wen; Mingcong Deng; Dongyun Wang
Modelling and computation for designs of multistage heat exchanger systems
A multistage heat exchanger system is formed when it is desired to heat a single cold fluid stream with the help of several available hot streams. Usually only one specific size combination will lead to total minimum cost. The determination of these ... Keywords: Heat Exchangers, multistage, optimisation
A. Malhotra; S. B. Muhaddin
Improving prediction of exchange rates using Differential EMD
Volatility is a key parameter when measuring the size of errors made in modelling returns and other financial variables such as exchanged rates. The autoregressive moving-average (ARMA) model is a linear process in time series; whilst in the nonlinear ... Keywords: Empirical Mode Decomposition, Exchange rates, Markov switching GARCH, Markov switching regression, Prediction, Support vector regression
Bhusana Premanode; Chris Toumazou
Finite element modeling of borehole heat exchanger systems
Single borehole heat exchanger (BHE) and arrays of BHE are modeled by using the finite element method. Applying BHE in regional discretizations optimal conditions of mesh spacing around singular BHE nodes are derived. Optimal meshes have shown superior ... Keywords: Borehole heat exchanger, Borehole thermal energy store, FEFLOW, TRNSYS
H. -J. G. Diersch; D. Bauer; W. Heidemann; W. R�haak; P. Sch�tzl
Transfer Credit Approval Form For Transfer Terms and Exchange Programs
Transfer Credit Approval Form For Transfer Terms and Exchange Programs CONTINUED Student/transfer term is not a Dartmouth-sponsored program. ______ The regulations for exchange/transfer terms of the COI will review my transfer term application and I may only receive Dartmouth credit for a transfer
Myers, Lawrence C.
Foundation Heat Exchanger Model and Design Tool Development and Validation
. Feasibility of foundation heat exchangers in ground source heat pump systems in the United States. ASHRAE systems, with an estimated 1.7 million installed units with total installed heating capacity on the order Heat Exchangers for Residential Ground Source Heat Pump Systems - Numerical Modeling and Experimental
Ion-exchange material and method of storing radioactive wastes
A new cation exchanger is a modified tobermorite containing aluminum isomorphously substituted for silicon and containing sodium or potassium. The exchanger is selective for lead, rubidium, cobalt, and cadmium and is selective for cesium over calcium or sodium. The tobermorites are compatible with cement and are useful for the long-term fixation and storage of radioactive nuclear wastes.
Komarneni, S.; Roy, D.M.
Analysis and design of a secure key exchange scheme
We propose a new key exchange scheme where the secret key is obtained by multiplying the powers of block upper triangular matrices. After studying the cryptographic properties of these block matrices, the theoretical aspects of this scheme are analyzed, ... Keywords: Block matrices, Cryptography, Discrete logarithm problem, Key exchange scheme, Public key, Quick exponentiation, Security, Triangular matrices
Rafael �lvarez; Leandro Tortosa; Jos�-Fco Vicent; Antonio Zamora
Cryptanalysis of two three-party encrypted key exchange protocols
Due to the simplicity of maintaining human memorable passwords without any assistant storage device, password-based three-party encrypted key exchange (3PEKE) protocol has become one of the most promising research fields on user authentication and secure ... Keywords: Authentication, Cryptanalysis, Security, Three-party encrypted key exchange (3PEKE) protocol, Undetectable on-line password guessing attacks
N. W. Lo; Kuo-Hui Yeh
Deposition of Biological Aerosols on HVAC Heat Exchangers
LBNL-47669 Deposition of Biological Aerosols on HVAC Heat Exchangers Jeffrey Siegel and Iain Walker of Biological Aerosols on HVAC Heat Exchangers Jeffrey A. Siegel Iain S. Walker, Ph.D. ASHRAE Student Member that are found in commercial and residential HVAC systems of 1 - 6 m/s (200 - 1200 ft/min), particle diameters
Simulation of the heat exchangers dynamics in MATLAB&simulink
Heat exchangers that transfer energy from flue gas to steam are important units of thermal power stations. Their inertias are often decisive for the design of the steam temperature control system. In this paper, the analysis and the simulation of the ... Keywords: MATLAB&simulink, S-functions, finite difference method, heat exchangers, partial differential equations, real-time, simulation, superheaters
Pavel Nevriva; Stepan Ozana; Ladislav Vilimec
Walking in simulated reduced gravity: mechanical energy fluctuations and exchange
Walking in simulated reduced gravity: mechanical energy fluctuations and exchange TIMOTHY M reduced gravity: mechanical energy fluctuations and exchange. J. Appl. Physiol. 86(1): 383390, 1999.--Walking humans conserve mechanical and, presum- ably, metabolic energy with an inverted pendulum-like ex
Kram, Rodger
NGNP Process Heat Utilization: Liquid Metal Phase Change Heat Exchanger
One key long-standing issue that must be overcome to fully realize the successful growth of nuclear power is to determine other benefits of nuclear energy apart from meeting the electricity demands. The Next Generation Nuclear Plant (NGNP) will most likely be producing electricity and heat for the production of hydrogen and/or oil retrieval from oil sands and oil shale to help in our national pursuit of energy independence. For nuclear process heat to be utilized, intermediate heat exchange is required to transfer heat from the NGNP to the hydrogen plant or oil recovery field in the most efficient way possible. Development of nuclear reactor - process heat technology has intensified the interest in liquid metals as heat transfer media because of their ideal transport properties. Liquid metal heat exchangers are not new in practical applications. An important rational for considering liquid metals is the potential convective heat transfer is among the highest known. Thus explains the interest in liquid metals as coolant for intermediate heat exchange from NGNP. For process heat it is desired that, intermediate heat exchangers (IHX) transfer heat from the NGNP in the most efficient way possible. The production of electric power at higher efficiency via the Brayton Cycle, and hydrogen production, requires both heat at higher temperatures and high effectiveness compact heat exchangers to transfer heat to either the power or process cycle. Compact heat exchangers maximize the heat transfer surface area per volume of heat exchanger; this has the benefit of reducing heat exchanger size and heat losses. High temperature IHX design requirements are governed in part by the allowable temperature drop between the outlet and inlet of the NGNP. In order to improve the characteristics of heat transfer, liquid metal phase change heat exchangers may be more effective and efficient. This paper explores the overall heat transfer characteristics and pressure drop of the phase change heat exchanger with Na as the heat exchanger coolant. In order to design a very efficient and effective heat exchanger one must optimize the design such that we have a high heat transfer and a lower pressure drop, but there is always a trade-off between them. Based on NGNP operational parameters, a heat exchanger analysis with the sodium phase change will be presented to show that the heat exchanger has the potential for highly effective heat transfer, within a small volume at reasonable cost.
Piyush Sabharwall; Mike Patterson; Vivek Utgikar; Fred Gunnerson
Building Energy Data Exchange Specification (BEDES) | Department of Energy
Commercial Buildings » Building Energy Data Exchange Specification Commercial Buildings » Building Energy Data Exchange Specification (BEDES) Building Energy Data Exchange Specification (BEDES) The Building Energy Data Exchange Specification (BEDES, pronounced "beads" or /bi:ds/) is designed to support analysis of the measured energy performance of commercial, multifamily, and residential buildings, by providing a common data format, definitions, and an exchange protocol for building characteristics, efficiency measures, and energy use. Challenge One of the primary challenges to expanding the building energy efficiency retrofit market is the lack of empirical data on the energy performance and physical and operational characteristics of commercial, multifamily, and residential buildings. This makes it difficult for building-level
Ocean - Data Publishing and Exchange | Data.gov
Publishing and Exchange Publishing and Exchange Ocean Data Tools Technical Guide Map Gallery Regional Planning Feedback Ocean You are here Data.gov » Communities » Ocean Data Publishing and Exchange This section provides information on common mapping service and data encoding standards, data publishing considerations, and links to relevant data access and exchange ontologies and semantics. Common Mapping Standards Data Publishing Considerations Data Access and Exchange Common Mapping Standards Why Use Data Standards? Benefits Encourage internal and external interoperability Data can be leveraged beyond the initial intent for creation Increase system transparency Reduces design and development time Obstacles Many different kinds of standards Can often be complex to architect Initial learning curve to get started
Condensing Heat Exchanger for Optimization of Energy Efficiency
Historically, boiler efficiency has been limited due to the minimum temperature allowed at the stack. Heat lost up the stack was in exchange for keeping the flue gas temperature above the water vapor dew point. If water vapor was allowed to condense out, rapid deterioration, due to acid corrosion, of the outlet duct and stack would result. With the development of the condensing heat exchanger, boiler efficiency can now exceed 90%. Approximately 1% gain in boiler efficiency can be expected for every 40F (4.5C) reduction in flue gas stack temperature. In the CHX� condensing heat exchanger, all gas wetted surfaces are covered with DuPont Teflon�. The Teflon covered heat exchanger surfaces are impervious to all acids normally resulting from the combustion of fossil fuels. This allows the flue gas to be cooled to below the water vapor dew point with no subsequent corrosion of the heat exchanger surfaces.
Carrigan, J. F.; Johnson, D. W.; DiVitto, J. G.; Schulze, K. H.
Staff exchange with Freeborn Tool Company. Final project
Staff exchanges, such as the one described in this report, are intended to facilitate communication and collaboration among scientists and engineers at Department of Energy (DOE) laboratories, US industry, and academia. Funding support for these exchanges is provided by the DOE, Office of Energy Research, Laboratory Technology Transfer Program. Funding levels for each exchange typically range from $20,000 to $40,000. The exchanges offer the opportunity for the laboratories to transfer technology and expertise to industry, gain a perspective on industry`s problems, and develop the basis for further cooperative efforts through Cooperative Research and Development Agreements (CRADAs) or other mechanisms. Information in this report on the staff exchange of Pacific Northwest Laboratory (PNL) staff with Freeborn Tool Company includes the purpose and objectives, a summary of activities, significant accomplishments, significant problems, industry benefits realized, recommended follow-on work and potential benefits expected from that work.
Rasmussen, D.E.
State Administration for Foreign Exchange | Open Energy Information
State Administration for Foreign Exchange State Administration for Foreign Exchange Jump to: navigation, search TODO: More information needed This article is a stub. You can help OpenEI by expanding it. China's State Administration For Foreign Exchange (SAFE) is also responsible for NGOs http://en.wikipedia.org/wiki/State_Administration_of_Foreign_Exchange http://www.csmonitor.com/World/Asia-Pacific/2010/0520/Law-chokes-Chinese-NGOs-foreign-funding Retrieved from "http://en.openei.org/w/index.php?title=State_Administration_for_Foreign_Exchange&oldid=306631" Categories: Articles with outstanding TODO tasks Stubs What links here Related changes Special pages Printable version Permanent link Browse properties 429 Throttled (bot load) Error 429 Throttled (bot load) Throttled (bot load) Guru Meditation:
Multicolor Underwater Imaging Techniques.
??Studies were conducted on multispectral polarimetric subtraction imaging techniques for underwater imaging that use a broadband light source. The main objective of this study was� (more)
Waggoner, Douglas Scott
Graphite Foam Heat Exchangers for Thermal Management
Improved thermal management is needed to increase the power density of electronic and more effectively cool electronic enclosures that are envisioned in future aircraft, spacecraft and surface ships. Typically, heat exchanger cores must increase in size to more effectively dissipate increased heat loads, this would be impossible in many cases, thus improved heat exchanger cores will be required. In this Phase I investigation, MRi aimed to demonstrate improved thermal management using graphite foam (Gr-foam) core heat exchangers. The proposed design was to combine Gr-foams from POCO with MRi's innovative low temperature, active metal joining process (S-Bond{trademark}) to bond Gr-foam to aluminum, copper and aluminum/SiC composite faceplates. The results were very favorable, so a Phase II SBIR with the MDA was initiated. This had primarily 5 tasks: (1) bonding, (2) thermal modeling, (3) cooling chip scale packages, (4) evaporative cooling techniques and (5) IGBT cold plate development. The bonding tests showed that the ''reflow'' technique with S-Bond{reg_sign}-220 resulted in the best and most consistent bond. Then, thermal modeling was used to design different chip scale packages and IGBT cold plates. These designs were used to fabricate many finned graphite foam heat sinks specifically for two standard type IC packages, the 423 and 478 pin chips. These results demonstrated several advantages with the foam. First, the heat sinks with the foam were lighter than the copper/aluminum sinks used as standards. The sinks for the 423 design made from foam were not as good as the standard sinks. However, the sinks made from foam for the 478 pin chips were better than the standard heat sinks used today. However, this improvement was marginal (in the 10-20% better regime). However, another important note was that the epoxy bonding technique resulted in heat sinks with similar results as that with the S-bond{reg_sign}, slightly worse than the S-bond{reg_sign}, but still better than the standard heat sinks. Next, work with evaporative cooling techniques, such as heat pipes, demonstrated some unique behavior with the foam that is not seen with standard wick materials. This was that as the thickness of the foam increased, the performance got better, where with standard wick materials, as the thickness increases, the performance decreases. This is yet to be completely explained. Last, the designs from the thermal model were used to fabricate a series of cold plates with the graphite foam and compare them to similar designs using high performance folded fin aluminum sinks (considered standard in the industry). It was shown that by corrugating the foam parallel to fluid flow, the pressure drop can be reduced significantly while maintaining the same heat transfer as that in the folded fin heat sink. In fact, the results show that the graphite foam heat sink can utilized 5% the pumping power as that required with the folded fin aluminum heat sink, yet remove the same amount of heat.
Klett, J.W.
NEI Corporation Technology Promotes Efficiency in Heat Exchangers...
Top image: Filmwise condensation (FWC), Bottom image: Dropwise condensation (DWC) R&D Opportunity In electrical utilities and in many process industries, improved heat...
On a base exchange game on graphs
We consider the following maker-breaker game on a graph G that has a partition of the edge set E into two spanning trees E1 and E2. Initially the edges of E1 are purple and the edges of E2 blue. Maker and breaker move alternately. In a move of the maker a blue edge is coloured purple. The breaker then has to recolour a different edge blue in such a way that the purple and the blue edges are spanning trees again. The goal of the maker is to exchange all colours, i.e. to make E1 blue and E2 purple. We prove that a sufficient but not necessary condition for the breaker to win is that the graph contains an induced K4. Furthermore we characterize the structure of a partition of a wheel into two spanning trees and show that the maker wins on wheels Wn with n ? 4 and provide an example of a graph where, for some partitions, the maker wins, for some others, the breaker wins.
Stephan Dominique Andres; Winfried Hochst�ttler; Markus Merkel
DIRECT CONTACT HEAT EXCHANGER 10 kW POWER LOOP. SECTION 1: EXECUTIVE SUMMARY. SECTION 2: TEST SERIES NO. 1. SECTION 3; TEST SERIES NO. 2
Direct Contact Heat Exchanger . . . . . . . . . .DIRECT CONTACT HEAT EXCHANGER TEST LOOP . . . . . . . . TestCALIBRATION . CONVENTIONAL HEAT EXCHANGER . . . Subcritical
Engineering, Barber-Nicholas
EXCHANGE. Volume 3-93, March 1993
This report discusses the following topics on computer environments: Releasing computer software outside EG&G Idaho; Ilford digital photo imager; mandatory upgrade of PC ORPS software; ORPS host computer upgrade; EROB computer users see network change; password expiration notice; big iron still has place in HPC market; handy scripts to copy and move files; more on workstation password expiration; training center course schedule for April 1993; Microsoft Word Version 5.1a- button bar; file attributes can provide you greater flexibility; constructing a personal WordPerfect dictionary; and Windows shortcuts.
Boltz, J.C. [ed.
Modeling Free Convection Flow of Liquid Hydrogen within a Cylindrical Heat Exchanger Cooled to 14 K
Lau, W, and Yang, S. , �A Heat Exchanger between Forced FlowWITHIN A CYLINDRICAL HEAT EXCHANGER COOLED TO 14 K S. Qof the container is a heat exchanger between the hydrogen
Yang, S.W.; Oxford U.
Eq. (18b) Dhe heat exchanger heat transfer parameter, Eq. (t1 Loop Thermosiphon Heat Exchanger,n ASHRAE Transactions,s . � Thermosiphon Heat Exchanger,n Part 2, 1980, No. 2588,
Mertol, A.
A.J.Hunt, "Small Particle Heat Exchangers" Lawrence BerkeleyUtilizing A Small Particle Heat Exchanger ArIon]. Hunt AprilA SMALL PARTICLE HEAT EXCHANGER Arlon J. Hunt Lawrence
Hunt, Arlon J.
THERMOSIPHONS WITH HEAT EXCHANGERS A. Mertol, W. Place, T.Eq. (18b) Dhe heat exchanger heat transfer parameter, Eq. (t1 Loop Thermosiphon Heat Exchanger,n ASHRAE Transactions,
Mining partially annotated images
In this paper, we study the problem of mining partially annotated images. We first define what the problem of mining partially annotated images is, and argue that in many real-world applications annotated images are typically partially annotated and ... Keywords: image annotation completion and prediction, partially annotated training set, semi-supervised learning
Zhongang Qi; Ming Yang; Zhongfei (Mark) Zhang; Zhengyou Zhang
Web accessible image similarity measurements
Web accessible image similarity measurements. Background: There ... messages). Web Access to Image Similarity Measurements. ...
Seismic Imaging and Monitoring
I give an overview of LANL's capability in seismic imaging and monitoring. I present some seismic imaging and monitoring results, including imaging of complex structures, subsalt imaging of Gulf of Mexico, fault/fracture zone imaging for geothermal exploration at the Jemez pueblo, time-lapse imaging of a walkway vertical seismic profiling data for monitoring CO{sub 2} inject at SACROC, and microseismic event locations for monitoring CO{sub 2} injection at Aneth. These examples demonstrate LANL's high-resolution and high-fidelity seismic imaging and monitoring capabilities.
Huang, Lianjie [Los Alamos National Laboratory
Manhattan Project: Trinity Images
IMAGES IMAGES Trinity Test Site (July 16, 1945) Resources > Photo Gallery The first 0.11 seconds of the Nuclear Age These seven photographs of the Trinity test were taken by time-lapse cameras. The last is 109 milliseconds, or 0.109 seconds, after detonation. Scroll down to view each individual image. The photographs are courtesy the Los Alamos National Laboratory, via the Federation of American Scientists web site. The animation is original to the Office of History and Heritage Resources. The dawn of the Nuclear Age (Trinity image #1) The dawn of the Nuclear Age Trinity image #2 Trinity image #3 Trinity image #4 Trinity image #5 Trinity, 0.09 seconds after detonation (Trinity image #6) Trinity, 0.09 seconds after detonation Trinity, 0.11 seconds after detonation (Trinity image #7)
Building Energy Data Exchange Specification" Building Energy Data Exchange Specification" "Version 2.3" "application/vnd.ms-excel" "Overview:" "This document describes the DOE Building Energy Data Exchange Specification (BEDES). BEDES is designed to support analysis of the measured energy performance of commercial and residential buildings, with data fields for building characteristics, efficiency measures and energy use. BEDES defines and describes these data fields and their relationships. " "BEDES is used for the DOE Building Performance Database (BPD) as well as the Standard Energy Efficiency Disclosure (SEED) platform, as shown below. Note that SEED includes additional fields that are outside BPD scope (e.g. property address and auditor contact information)."
Coherent spin manipulation in an exchange-only qubit
Initialization, manipulation, and measurement of a three-spin qubit are demonstrated using a few-electron triple quantum dot, where all operations can be driven by tuning the nearest-neighbor exchange interaction. Multiplexed reflectometry, applied to two nearby charge sensors, allows for qubit readout. Decoherence is found to be consistent with predictions based on gate voltage noise with a uniform power spectrum. The theory of the exchange-only qubit is developed and it is shown that initialization of only two spins suffices for operation. Requirements for full multi-qubit control using only exchange and electrostatic interactions are outlined.
E. A. Laird; J. M. Taylor; D. P. DiVincenzo; C. M. Marcus; M. P. Hanson; A. C. Gossard
A water storage tank in the coolant water loop of a nuclear reactor contains a tubular heat exchanger. The heat exchanger has tube sheets mounted to the tank connections so that the tube sheets and tubes may be readily inspected and repaired. Preferably, the tubes extend from the tube sheets on a square pitch and then on a rectangular pitch there between. Also, the heat exchanger is supported by a frame so that the tank wall is not required to support all of its weight. 6 figures.
Gillett, J.E.; Johnson, F.T.; Orr, R.S.; Schulz, T.L.
Heat exchanger for fuel cell power plant reformer
A heat exchanger uses the heat from processed fuel gas from a reformer for a fuel cell to superheat steam, to preheat raw fuel prior to entering the reformer and to heat a water-steam coolant mixture from the fuel cells. The processed fuel gas temperature is thus lowered to a level useful in the fuel cell reaction. The four temperature adjustments are accomplished in a single heat exchanger with only three heat transfer cores. The heat exchanger is preheated by circulating coolant and purge steam from the power section during startup of the latter.
Misage, Robert (Manchester, CT); Scheffler, Glenn W. (Tolland, CT); Setzer, Herbert J. (Ellington, CT); Margiott, Paul R. (Manchester, CT); Parenti, Jr., Edmund K. (Manchester, CT)
A metadata-aware application for remote scoring and exchange of tissue microarray images
of the existing TMA databases are compatible with this standard. For example, the Stanford TMAD en- ables the export of data in TMA DES format [6]. TmaDB, based at the University of Leeds is a central repository for archiving all aspects of TMA and associated...
Morris, Lorna; Tsui, Andrew; Crichton, Charles; Harris, Steve; Maccallum, Peter H; Howat, William J; Davies, Jim; Brenton, James D; Caldas, Carlos
Tc-99 Ion Exchange Resin Testing
Pacific Northwest National Laboratory was contracted by CHPRC to evaluate the release of 99Tc from spent resin used to treat water from well 299-W15-765 and stored for several years. The key questions to be answered are: 1) does 99Tc readily release from the spent ion exchange resin after being in storage for several years; 2) if hot water stripping is used to remove the co-contaminant carbon tetrachloride, will 99Tc that has been sequestered by the resin be released; and 3) can spent resin be encapsulated into a cementitious waste form; if so, how much 99Tc would be released from the weathering of the monolith waste form? The results from the long term stability leach test results confirm that the resin is not releasing a significant amount of the sequestered 99Tc, evident by the less than 0.02% of the total 99Tc loaded being identified in the solution. Furthermore, it is possible that the measured 99Tc concentration is the result of 99Tc contained in the pore spaces of the resin. In addition to these results, analyses conducted to examine the impact of hot water on the release of 99Tc suggest that only a small percentage of the total is being released. This suggest that hot water stripping to remove carbon tetrachloride will not have a significant affect on the resin�s ability to hold-on to sequestered 99Tc. Finally, encapsulation of spent resin in a cementitious material may be a viable disposal option, but additional tests are needed to examine the extent of physical degradation caused by moisture loss and the effect this degradation process can have on the release of 99Tc.
Valenta, Michelle M.; Parker, Kent E.; Pierce, Eric M.
Proton Exchange Membranes for Fuel Cells
Proton exchange membrane, also known as polymer electrolyte membrane, fuel cells (PEMFCs) offer the promise of efficient conversion of chemical energy of fuel, such as hydrogen or methanol, into electricity with minimal pollution. Their widespread use to power zero-emission automobiles as part of a hydrogen economy can contribute to enhanced energy security and reduction in greenhouse gas emissions. However, the commercial viability of PEMFC technology is hindered by high cost associated with the membrane electrode assembly (MEA) and poor membrane durability under prolonged operation at elevated temperature. Membranes for automotive fuel cell applications need to perform well over a period comparable to the life of an automotive engine and under heavy load cycling including start-stop cycling under sub-freezing conditions. The combination of elevated temperature, changes in humidity levels, physical stresses and harsh chemical environment contribute to membrane degradation. Perfluorinated sulfonic acid (PFSA)-based membranes, such as Nafion�, have been the mainstay of PEMFC technology. Their limitations, in terms of cost and poor conductivity at low hydration, have led to continuing research into membranes that have good proton conductivity at elevated temperatures above 120 �C and under low humidity conditions. Such membranes have the potential to avoid catalyst poisoning, simplify fuel cell design and reduce the cost of fuel cells. Hydrocarbon-based membranes are being developed as alternatives to PFSA membranes, but concerns about chemical and mechanical stability and durability remain. Novel anhydrous membranes based on polymer gels infused with protic ionic liquids have also been recently proposed, but considerable fundamental research is needed to understand proton transport in novel membranes and evaluate durability under fuel cell operating conditions. In order to advance this promising technology, it is essential to rationally design the next generation of PEMs based on an understanding of chemistry, membrane morphology and proton transport obtained from experiment, theory and computer simulation.
Devanathan, Ramaswami
Event:CCCCC and SPREP-The Marketplace: Exchange of Climate Change...
Marketplace: Exchange of Climate Change Ideas and Themes Jump to: navigation, search Calendar.png CCCCC and SPREP-The Marketplace: Exchange of Climate Change Ideas and Themes:...
Effective material usage in a compact heat exchanger with periodic micro-channels / Bertus George Kleynhans.
??All modern High Temperature Reactors (HTR) thermal cycles have one thing in common: the use of some form of heat exchanger. This heat exchanger is� (more)
Kleynhans, Bertus George
Development and Evaluation of Brazed Joints for a Plate Microchnanel Heat Exchanger.
??A brazing method is developed for high efficiency microchannel heat plate heat exchangers for waste heat recovery. Prototype elements for these heat exchangers are fabricated� (more)
Craymer, Kenneth L.
Meese-Rogoff redux: Micro-based exchange-rate forecasting
Johnatban. "Exchange Rate Forecasting: The Errors We'veBased Exchange-Rate Forecasting By MARTIN D . D . EVANS ANDon longer-horizon forecasting, we examine forecasting over
Evans, MDD; Lyons, Richard K.
Image registration method for medical image sequences
Image registration of low contrast image sequences is provided. In one aspect, a desired region of an image is automatically segmented and only the desired region is registered. Active contours and adaptive thresholding of intensity or edge information may be used to segment the desired regions. A transform function is defined to register the segmented region, and sub-pixel information may be determined using one or more interpolation methods.
Gee, Timothy F.; Goddard, James S.
Isotope Transport and Exchange within the Coso Geothermal System | Open
Transport and Exchange within the Coso Geothermal System Transport and Exchange within the Coso Geothermal System Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Conference Proceedings: Isotope Transport and Exchange within the Coso Geothermal System Details Activities (1) Areas (1) Regions (0) Abstract: We are investigating the plumbing of the Coso geothermal system and the nearby Coso Hot Springs using finite element models of single-phase, variable-density fluid flow, conductive- convective heat transfer, fluid-rock isotope exchange, and groundwater residence times. Using detailed seismic reflection data and geologic mapping, we constructed a regional crosssectional model that extends laterally from the Sierra Nevada to Wildhorse Mesa, west of the Argus Range. The base of the model terminates at the brittle-ductile transition zone. A sensitivity study was
Migrant Remittances and Exchange Rate Regimes in the Developing World
This article argues that the international financial consequences of immigration exert a substantial influence on the choice of exchange rate regimes in the developing world. Over the past two decades, migrant remittances ...
Singer, David Andrew
Stability-Dependent Exchange Coefficients for Air�Sea Fluxes
This study introduces exchange coefficients for wind stress (CD), latent heat flux (CL), and sensible heat flux (CS) over the global ocean. They are obtained from the state-of-the-art Coupled Ocean�Atmosphere Response Experiment (COARE) bulk ...
A. Birol Kara; Harley E. Hurlburt; Alan J. Wallcraft
Interfacial Water-Transport Effects in Proton-Exchange Membranes
1993,�"The�Contact�Angle� between�Water�and�the�Surface�of�Desorption,�and�Transport�of�Water�in� Polymer�Electrolyte�Vaporization?Exchange�Model� for�Water�Sorption�and�Flux�in�
Kienitz, Brian
Topography and Radiation Exchange of a Mountainous Watershed
This report deals with the radiation exchange of a complex terrain. A relatively simple network for computing topographic parameters global radiation, and net radiation of a mountainous terrain was developed and applied to a forested Appalachian ...
Hailiang Fu; Stanislaw J. Tajchman; James N. Kochenderfer
Calculation of exchange energies using algebraic perturbation theory
An algebraic perturbation theory is presented for efficient calculations of localized states and hence of exchange energies, which are the differences between low-lying states of the valence electron of a molecule, formed by the collision of an ion Y{sup +} with an atom X. For the case of a homonuclear molecule these are the gerade and ungerade states and the exchange energy is an exponentially decreasing function of the internuclear distance. For such homonuclear systems the theory is used in conjunction with the Herring-Holstein technique to give accurate exchange energies for a range of intermolecular separations R. Since the perturbation parameter is essentially 1/R, this method is suitable for large R. In particular, exchange energies are calculated for X{sub 2}{sup +} systems, where X is H, Li, Na, K, Rb, or Cs.
Burrows, B. L. [Mathematics Section Faculty of Computing, Engineering and Technology Staffordshire University, Beaconside, Stafford ST18 0DG (United Kingdom); Dalgarno, A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States); Cohen, M. [Department of Physical Chemistry, Hebrew University of Jerusalem, Jerusalem IL-91904 (Israel)
Microchannel crossflow fluid heat exchanger and method for its fabrication
A microchannel crossflow fluid heat exchanger and a method for its fabrication are disclosed. The heat exchanger is formed from a stack of thin metal sheets which are bonded together. The stack consists of alternating slotted and unslotted sheets. Each of the slotted sheets includes multiple parallel slots which form fluid flow channels when sandwiched between the unslotted sheets. Successive slotted sheets in the stack are rotated ninety degrees with respect to one another so as to form two sets of orthogonally extending fluid flow channels which are arranged in a crossflow configuration. The heat exchanger has a high surface to volume ratio, a small dead volume, a high heat transfer coefficient, and is suitable for use with fluids under high pressures. The heat exchanger has particular application in a Stirling engine that utilizes a liquid as the working substance.
Swift, Gregory W. (Los Alamos, NM); Migliori, Albert (Santa Fe, NM); Wheatley, John C. (Los Alamos, NM)
Swift, G.W.; Migliori, A.; Wheatley, J.C.
The Influence of Availability Costs on Optimal Heat Exchanger Size
Optimizing heat exchangers based on second law rather than first law considerations ensures that the most efficient use of available energy is being made. Techniques for second-law optimizing heat exchangers have been developed recently that are straightforward and simple. The main difficulty lies in determining the proper cost of irrreversibility that is to be used in the optimization process. This paper demonstrates how this issue can be handled by including the irreversibility cost in a dimensionless parameter that represents the ratio of annual ownership costs to annual operating costs that include irreversibility costs. In this way, each heat exchanger designer can estimate the costs of irreversibilities for his particular system, and use the generalized method for determining the optimal heat exchanger size.
Large Scale Geothermal Exchange System for Residential, Office...
a 10 year effort to clean up a former paper manufacturing operation. Impacts River-based heat exchanger design offers potential to reduce GHP installation costs lower than more...
1-MWE heat exchangers for OTEC. Final design report
The design of a 1 MWe OTEC heat exchanger is documented, including the designs of the evaporator and associated systems, condenser, instrumentation, and materials for corrosion/erosion control and fabrication processes. (LEW)
Sprouse, A.M.
Surface-to-Atmosphere Exchange in a River Valley Environment
Observations of the turbulent exchange between a river surface and the atmosphere in a mountainous area in southern Brazil are presented and discussed. A micrometeorological tower was installed directly above the surface of a 60-m-wide river. ...
Ot�vio C. Acevedo; Osvaldo L. L. Moraes; Rodrigo da Silva; Vagner Anabor; Daniel P. Bittencourt; Hans R. Zimmermann; Roberto O. Magnago; Gerv�sio A. Degrazia
Data Center Rack Cooling with Rear-door Heat Exchanger
they can use treated water from a plate-and-frame heat exchanger connected to a cooling tower. These inherent features of a RDHx help reduce energy use while minimizing maintenance...
1. Heat Exchangers Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On HomeBasic Search About Publications Advanced Search New Hot Docs News...
Process for exchanging hydrogen isotopes between gaseous hydrogen and water
A process for exchanging isotopes of hydrogen, particularly tritium, between gaseous hydrogen and water is provided whereby gaseous hydrogen depeleted in tritium and liquid or gaseous water containing tritium are reacted in the presence of a metallic catalyst.
Hindin, Saul G. (Mendham, NJ); Roberts, George W. (Westfield, NJ)
Failure Analysis of the Heat Exchanger Tubes Exposed to High ...
The bundle of the heat exchanger was removed from service after 8 years for metallurgical investigation. The tube side contains boiler feed water at 622oF and �...
Modeling of Hydraulically Controlled Exchange Flow in the Bosphorus Strait
Recent hydrographic observations obtained in the Bosphorus Strait illustrate several features of the flow that may be related with the internal hydraulics. A two-layer numerical model indicates that the two-way exchange flow may indeed be subject ...
Temel Oguz; Emin �zsoy; Mohammed A. Latif; Halil I. Sur; �mit �nl�ata
International data exchange for geothermal energy power production
An approach to the problem of economic data handling and dissemination of geothermal information is the establishment of an international data exchange cooperative program with the idea to avoid unnecessary and expensive duplication of research and development effort.
Phillips, S.L.
Currency Choice and Exchange Rate Pass-Through
We show, using novel data on currency and prices for US imports, that even conditional on a price change, there is a large difference in the exchange rate pass-through of the average good priced in dollars (25 percent) ...
Gopinath, Gita
Lagrangian Motion and Fluid Exchange in a Barotropic Meandering Jet
Kinematic models predict that a coherent structure, such as a jet or an eddy, in an unsteady flow can exchange fluid with its surroundings. The authors consider the significance of this effect for a fully nonlinear, dynamically consistent, ...
A. M. Rogerson; P. D. Miller; L. J. Pratt; C. K. R. T. Jones
Comments on Measuring Turbulent Exchange Within and Above Forest Canopy
Actual problems of measuring the turbulent exchange in and above forests (e.g., site requirements of micrormeteorological observations, aerodynamic characteristics of forests, observations of the crown-produced mixing layer, flux-profile ...
Stanislaw J. Tajchman
Systems and methods for a forced-convection heat exchanger are provided. In one embodiment, heat is transferred to or from a thermal load in thermal contact with a ...
Tracer Study of Vertical Exchange by Cumulus Clouds
This paper examines the exchange of material by convective cloud processes between the mixed layer and the overlying free troposphere. It describes results of a field experiment that was conducted in Lexington, Kentucky, during the period from 20 ...
J. K. S. Ching; A. J. Alkezweeny
A microchannel crossflow fluid heat exchanger and a method for its fabrication are disclosed. The heat exchanger is formed from a stack of thin metal sheets which are bonded together. The stack consists of alternating slotted and unslotted sheets. Each of the slotted sheets includes multiple parallel slots which form fluid flow channels when sandwiched between the unslotted sheets. Successive slotted sheets in the stack are rotated ninety degrees with respect to one another so as to form two sets of orthogonally extending fluid flow channels which are arranged in a crossflow configuration. The heat exchanger has a high surface to volume ratio, a small dead volume, a high heat transfer coefficient, and is suitable for use with fluids under high pressures. The heat exchanger has particular application in a Stirling engine that utilizes a liquid as the working substance. 9 figs.
Reversible Guest Exchange Mechanisms in Supramolecular Host-GuestAssemblies
Synthetic chemists have provided a wide array of supramolecular assemblies able to encapsulate guest molecules. The scope of this tutorial review focuses on supramolecular host molecules capable of reversibly encapsulating polyatomic guests. Much work has been done to determine the mechanism of guest encapsulation and guest release. This review covers common methods of monitoring and characterizing guest exchange such as NMR, UV-VIS, mass spectroscopy, electrochemistry, and calorimetry and also presents representative examples of guest exchange mechanisms. The guest exchange mechanisms of hemicarcerands, cucurbiturils, hydrogen-bonded assemblies, and metal-ligand assemblies are discussed. Special attention is given to systems which exhibit constrictive binding, a motif common in supramolecular guest exchange systems.
Pluth, Michael D.; Raymond, Kenneth N.
Liquid-fluidized-bed heat exchanger flow distribution models
Allied Chemical Corporation at the Idaho National Engineering Laboratory is developing liquid-fluidized-bed shell-and-tube heat exchangers for geothermal applications. Sand fluidized by geothermal water on the shell side prevents scaling and increases heat transfer coefficients over conventional heat exchangers. Tests were conducted on two instrumented fluidized-bed heat exchanger models, constructed primarily of plexiglass, which differ in tube bundle orientation. One contains a horizontal bundle and the other a vertical tube bundle. Plexiglass construction allowed visual observation of flow patterns. The vertical model proved to have more uniform flow distribution and higher heat transfer coefficients than the horizontal model. The horizontal heat exchanger experienced piling on top of the tubes and areas of poor fluidization existed in the bed. Geometric considerations show that a horizontal design is more conducive to large flow rates than a vertical design. New design concepts for both vertical and horizontal assemblies and recommendations for further developmental work are presented.
Cole, L.T.; Allen, C.A.
Decontamination of water using nitrate selective ion exchange resin
A method for nitrate decontamination of water which involves passing the water through a bed of alkyl phosphonium anion exchange resin which has pendant alkyl groups of C[sub 3] or larger.
Lockridge, J.E.; Fritz, J.S.
FlexMarket : a transient mode of local exchange
This thesis presents the idea of a networked, transient mode of local food exchange and proposes a responsive infrastructure for integrating dynamic markets within the urban fabric. Focusing on market typologies as an area ...
Dunnam, Jennifer (Jennifer L.)
Energy effectiveness of simultaneous heat and mass exchange devices
Simultaneous heat and mass exchange devices such as cooling towers, humidifiers and dehumidifiers are widely used in the power generation, desalination, air conditioning, and refrigeration industries. For design and rating ...
Narayan, G. Prakash
The NCAR Atmosphere-Surface Turbulent Exchange Research (ASTER) Facility
The Atmosphere-Surface Turbulent Exchange Research (ASTER) facility developed at the National Center for Atmospheric Research (NCAR) will support observational research on the structure of the atmospheric surface layer. ASTER will provide state-...
J. A. Businger; W. F. Dabberdt; A. C. Delany; T. W. Horst; C. L. Martin; S. P. Oncley; S. R. Semmer
Management of executable schema mappings for XML data exchange
Executable schema mappings between XML schemas are essential to support numerous data management tasks such as data exchange, data integration and schema evolution. The novelty of this paper consists in a method for automatic generation of automappings ...
Tadeusz Pankowski
Exchange-Coupling-Induced Symmetry Breaking in Topological Insulators
An exchange gap in the Dirac surface states of a topological insulator (TI) is necessary for observing the predicted unique features such as the topological magnetoelectric effect as well as to confine Majorana fermions. ...
Wei, Peng
Impact of Interbasin Exchange on the Atlantic Overturning Circulation
The thermohaline exchange between the Atlantic and the Southern Ocean is analyzed, using a dataset based on WOCE hydrographic data. It is shown that the salt and heat transports brought about by the South Atlantic subtropical gyre play an ...
Wilbert Weijer; Wilhelmus P. M. de Ruijter; Henk A. Dijkstra; Peter Jan van Leeuwen
Heat Exchangers for Solar Water Heating Systems | Department...
heat to water in a storage tank. Heat-transfer fluids, such as antifreeze, protect the solar collector from freezing in cold weather. Liquid-to-liquid heat exchangers have...
Market equilibrium for CES exchange economies: existence, multiplicity, and computation
We consider exchange economies where the traders' preferences are expressed in terms of the extensively used constant elasticity of substitution (CES) utility functions. We show that for any such economy it is possible to say in polynomial ...
Bruno Codenotti; Benton McCune; Sriram Penumatcha; Kasturi Varadarajan
A method for nitrate decontamination of water which involves passing the water through a bed of alkyl phosphonium anion exchange resin which has pendant alkyl groups of C.sub.3 or larger.
Lockridge, James E. (Ames, IA); Fritz, James S. (Ames, IA)
Minutes from the Print and Mail Managers Exchange Forum Teleconferences |
Minutes from the Print and Mail Managers Exchange Forum Minutes from the Print and Mail Managers Exchange Forum Teleconferences Minutes from the Print and Mail Managers Exchange Forum Teleconferences Minutes from the Print and Mail Managers Exchange Forum Teleconferences. Contact the Office of Administrative Management and Support at (202) 586-4318 with any questions. Last updated 04/01/13 Minutes from the March 14, 2013 Printing and Mail Teleconference Minutes from the January 10, 2013 Printing and Mail Teleconference Minutes from the November 01, 2012 Printing and Mail Teleconference Minutes from the June 28, 2012 Printing and Mail Teleconference Minutes from the May 03, 2012 Printing and Mail Teleconference Minutes from the February 23, 2012 Printing and Mail Teleconference Minutes from the October 26, 2011 Printing and Mail Teleconference
BOP Heat Exchanger NDE Application: Automated Analysis Software Evaluation
Aging power plant components, especially balance-of-plant (BOP) heat exchanger tubing, experience failures as a result of a variety of flaw damage mechanisms. Accurately sizing these flaws has always been delegated to the experience and knowledge of qualified eddy current data analysts. Manually reporting all BOP heat exchanger tubing flaws is not practical because of time constraints and because the number of tubing flaws can vary from tube to tube. Typically, only the worst flaw condition is reported, ...
Standards for multilateral and world wide exchange of geothermal data
Standards for the exchange of machine-readable data are discussed at five levels covering (1) physical characteristics of the medium used in the exchange, (2) overall structure of the data file, (3) format of individual records, (4) types of information contained in a record, (5) authority files for information definition. The standards are used by the National Geothermal Information Resource for compilations of geothermal energy data.
Herr, J.J.; Phillips, S.L.; Schwartz, S.R.; Trippe, T.G.
Matrix heat exchanger including a liquid, thermal couplant
A tube-to-tube heat exchanger is disclosed with a thermally conductive matrix between and around the tubes to define annuli between the tubes and matrix. The annuli are filled to a level with a molten metal or alloy to provide a conductive heat transfer path from one tube through the matrix to the second tube. A matrix heat exchanger of this type is particularly useful for heat transfer between fluids which would react should one leak into the second.
Fewell, Thomas E. (Chattanooga, TN); Ward, Charles T. (Chattanooga, TN)
Heat Exchanger Visual Inspection - Partial Tube Blockage Considerations
�Challenges to the thermal performance capability of safety-related open cooling water system heat exchangers were a major reason the Nuclear Regulatory Commission (NRC) issued Generic Letter 89-13, �Service Water System Problems Affecting Safety Related Equipment.� GL 89-13 required licensees to commit to various actions to ensure that thermal performance requirements were met for heat exchangers supporting the ultimate heat sink (UHS) function. These actions may include periodic ...
SuperLig�639 ion exchange resin was tested as a retrieval mechanism for pertechnetate, through decontamination of a perrhenate spiked 5M Simple Average Na{sup +} Mass Based Simulant. Testing included batch contacts and a three-column ion exchange campaign. A decontamination of perrhenate exceeding 99% from the liquid feed was demonstrated. Analysis of the first formulation of a SBS/WESP simulant found unexpectedly low concentrations of soluble aluminum. Follow-on work will complete the formulation.
Morse, Megan; Nash, C.
Desalination of brackish waters using ion exchange media.
An environmentally friendly method and materials study for desalinating inland brackish waters (i.e., coal bed methane produced waters) using a set of ion-exchange materials is presented. This desalination process effectively removes anions and cations in separate steps with minimal caustic waste generation. The anion-exchange material, hydrotalcite (HTC), exhibits an ion-exchange capacity (IEC) of {approx} 3 mequiv g{sup -1}. The cation-exchange material, an amorphous aluminosilicate permutite-like material, (Na{sub x+2y}Al{sub x}Si{sub 1-x}O{sub 2+y}), has an IEC of {approx}2.5 mequiv g{sup -1}. These ion-exchange materials were studied and optimized because of their specific ion-exchange capacity for the ions of interest and their ability to function in the temperature and pH regions necessary for cost and energy effectiveness. Room temperature, minimum pressure column studies (once-pass through) on simulant brackish water (total dissolved solids (TDS) = 2222 ppm) resulted in water containing TDS = 25 ppm. A second once-pass through column study on actual produced water (TDS = {approx}11,000) with a high carbonate concentration used an additional lime softening step and resulted in a decreased TDS of 600 ppm.
Pless, Jason D.; Krumhansl, James Lee; Nenoff, Tina Maria; Voigt, James A.; Phillips, Mark L. F.; Axness, Marlene; Moore, Diana Lynn
Desalination of brackish waters using ion-exchange media
An environmentally friendly method and materials study for desalinating inland brackish waters (i.e., coal bed methane produced waters) using a set of ion-exchange materials is presented. This desalination process effectively removes anions and cations in separate steps with minimal caustic waste generation. The anion-exchange material, hydrotalcite (HTC), exhibits an ion-exchange capacity (IEC) of around 3 mequiv g{sup -1}. The cation-exchange material, an amorphous aluminosilicate permutite-like material, (Na{sub x}+2yAl{sub x}Si{sub 1}-xO{sub 2+y}), has an IEC of around to 2.5 mequiv g{sup -1}. These ion-exchange materials were studied and optimized because of their specific ion-exchange capacity for the ions of interest and their ability to function in the temperature and pH regions necessary for cost and energy effectiveness. Room temperature, minimum pressure column studies (once-pass through) on simulant brackish water (total dissolved solids (TDS) = 2222 ppm) resulted in water containing TDS = 25 ppm. A second once-pass through column study on actual produced water (TDS = similar to 11 000) with a high carbonate concentration used an additional lime softening step and resulted in a decreased TDS of 600 ppm.
Pless, J.D.; Philips, M.L.F.; Voigt, J.A.; Moore, D.; Axness, M.; Krumhansl, J.L.; Nenoff, T.M. [Sandia National Labs., Albuquerque, NM (United States)
Heat exchanger for reactor core and the like
A compact bayonet tube type heat exchanger which finds particular application as an auxiliary heat exchanger for transfer of heat from a reactor gas coolant to a secondary fluid medium. The heat exchanger is supported within a vertical cavity in a reactor vessel intersected by a reactor coolant passage at its upper end and having a reactor coolant return duct spaced below the inlet passage. The heat exchanger includes a plurality of relatively short length bayonet type heat exchange tube assemblies adapted to pass a secondary fluid medium therethrough and supported by primary and secondary tube sheets which are releasibly supported in a manner to facilitate removal and inspection of the bayonet tube assemblies from an access area below the heat exchanger. Inner and outer shrouds extend circumferentially of the tube assemblies and cause the reactor coolant to flow downwardly internally of the shrouds over the tube bundle and exit through the lower end of the inner shroud for passage to the return duct in the reactor vessel.
Kaufman, Jay S. (Del Mar, CA); Kissinger, John A. (Del Mar, CA)
Two heavy fermions bound via Higgs boson exchange
A system of two heavy fermions, leptons or quarks of the fourth generation, which are bound together via the Higgs boson exchange is studied. The conventional Yukawa-type interaction produced by this exchange is accompanied by several important corrections. We derived the Hamiltonian, which describes the correction arising from the retardation (compare the Breit correction in QED); we also calculated the relativistic and radiative corrections. The Higgs-induced bound state appears for the fermion mass m>m_{cr} \\approx 500 GeV. When the long-range Coulomb interaction or the gluon exchange are included, the bound states exist for any mass, but the Higgs exchange drastically increases the binding energy of these states when m is approaching m_{cr}. In the region m>m_{cr} the gluon exchange gives a sizable correction to the Higgs induced binding energy. This correction greatly exceeds typical binding energies in the states produced via the gluon exchange only. The possibility of detection of the considered bound states at LHC is discussed.
Victor Flambaum; Michael Kuchiev
Hydrogen Isotope Exchange Properties of Porous Solids Containing Hydrogen
Porous solids such as activated alumina, silica and molecular sieves generally contain significant amounts of hydrogen atoms in the form of H2O or OH even at high temperature and low humidity environment. A significant amount of this hydrogen is available for reversible isotopic exchange. This exchange reaction is slow under normal conditions and does not render itself to practical applications. But if the exchange kinetics is improved this reaction has the potential to be used for tritium removal from gas streams or for hydrogen isotopic separation.The use of catalysts to improve the exchange kinetics between hydrogen isotope in the gas phase and that in the solid phase was investigated. Granules of alumina, silica and molecular sieve were coated with platinum or palladium as the catalyst. The granules were packed in a 2-cm diameter column for isotope exchange tests. Gas streams containing different concentrations of deuterium in nitrogen or argon were fed through the protium saturated column. Isotope concentration in column effluent was monitored to generate isotope break-through curves. The curves were analyzed to produce information on the kinetics and capacity of the material. The results showed that all materials tested provided some extent of isotope exchange but some were superior both in kinetics and capacity. This paper will present the test results.
North American CO2 exchange: Inter comparison of modeled estimates with results from a fine scale atmospheric inversion
on �North �American �carbon �dioxide � exchange: �net �terrestrial �carbon �dioxide �exchange � constrained �Project �-�? � Carbon �Dioxide �(2010). �CD-�?ROM, � NOAA �
Gourdji, Sharon M.
The Performance Assessment Community of Practice (PA CoP) was developed in 2008 to improve consistency and quality in the preparation of performance assessments (PAs) and risk assessments across the Department of Energy (DOE) Complex. The term, PA, is used to represent all of these modeling applications in this report. The PA CoP goals are to foster the exchange of information among PA practitioners and to share lessons learned from PAs conducted for DOE, commercial disposal facilities, and international entities. Technical exchanges and workshops are a cornerstone of PA CoP activities. Previous technical exchanges have addressed Engineered Barriers (2009 - http://www.cresp.org/education/workshops/pacop/), the Advanced Simulation Capability for Environmental Management and the Cementitious Barriers Partnership (2010 - http://srnl.doe.gov/copexchange/links.htm). Each technical exchange also includes summary presentations regarding activities at DOE, the Nuclear Regulatory Commission (NRC) and other organizations (e.g., International Atomic Energy Agency (IAEA)) as well as a number of presentations from selected sites to provide insight and perspective from on-going modeling activities. Through the deployment of PA Assistance Teams, the PA CoP has also been engaged in the development of new PAs across the DOE Complex. As a way of improving consistency in the preparation of new PAs, the teams provide technical advice and share experiences, noteworthy practices, and lessons learned from previous Low-Level Waste Disposal Facility Federal Review Group (LFRG) reviews. Teams have provided support for PAs at Hanford, Idaho, Paducah and Portsmouth. The third annual PA CoP Technical Exchange was held on May 25-26, 2011 in Atlanta, GA. The PA CoP Steering Committee Meeting held its first meeting on May 24 prior to the Technical Exchange. Decision making using models and software quality assurance were the topical emphasis for the exchange. A new feature at the 2011 technical exchange was the use of panel discussions to solicit feedback from regulators and practitioners. This report summarizes discussions and recommendations from the steering committee meeting and presentations and feedback obtained at the technical exchange. Appendix I includes the steering committee meeting agenda and Appendix II includes the agenda for the technical exchange and a screenshot of the presentations and video files that are available online.
Seitz, R.
Security Analysis and Implementation of JUIT�Image Based Authentication System Using Kerberos Protocol
Secure environments protect their resources against unauthorized access by enforcing access control mechanisms. So when increasing security is an issue text based passwords are not enough to counter such problems. The need for something more secure along ... Keywords: Image Based Authentication System, AJAX, MySQL, Diffie-Hellman key Exchange, Kerberos Protocol, Keystroke Logging, Tempest Attack, Shoulder Attack, Brute-force Attack
Nitin; Durg Singh Chauhan; Vivek Kumar Sehgal; Ankit Mahanot; Pallavi Singh; Sohit Ahuja; Utkarsh Shrivastava; Manisha Rana; Vineet Punjabi; Shivam Vinay; Nakul Sharma
Synthetic stereoscopic panoramic images
Presented here is a discussion of the techniques required to create stereoscopic panoramic images. Such images allow interactive exploration of 3D environments with stereoscopic depth cues. If projected in a surround display environment they can engage ...
Paul Bourke
Nuclear Imaging instrumentation
Nuclear Imaging instrumentation Advances in gamma-ray detection and imaging have increased the pace of discovery in a broad cross-section of the sciences ranging from nuclear...
Estimation theoretical image restoration
In this thesis, we have developed an extensive study to evaluate image restoration from a single image, colored or monochromatic. Using a mixture of Gaussian and Poisson noise process, we derived an objective function to ...
Dolne, Jean J
Spectrographic imaging system
An imaging system for providing spectrographically resolved images. The system incorporates a one-dimensional spatial encoding mask which enables an image to be projected onto a two-dimensional image detector after spectral dispersion of the image. The dimension of the image which is lost due to spectral dispersion on the two-dimensional detector is recovered through employing a reverse transform based on presenting a multiplicity of different spatial encoding patterns to the image. The system is especially adapted for detecting Raman scattering of monochromatic light transmitted through or reflected from physical samples. Preferably, spatial encoding is achieved through the use of Hadamard mask which selectively transmits or blocks portions of the image from the sample being evaluated.
Morris, Michael D. (Ann Arbor, MI); Treado, Patrick J. (Ann Arbor, MI)
NIST Image Gallery: Search
... Search Tips - Search index includes image titles, descriptions, other text fields - Searches are case-insensitive - Keyword2 is optional. ...
Cell Image Visualization
... Biological cell image analysis projects include methods to measure cell segmentation accuracy and new segmentation methods to track live cells. ...
Video image position determination
An optical beam position controller in which a video camera captures an image of the beam in its video frames, and conveys those images to a processing board which calculates the centroid coordinates for the image. The image coordinates are used by motor controllers and stepper motors to position the beam in a predetermined alignment. In one embodiment, system noise, used in conjunction with Bernoulli trials, yields higher resolution centroid coordinates.
Christensen, Wynn (Los Alamos, NM); Anderson, Forrest L. (Bernalillo, NM); Kortegaard, Birchard L. (Los Alamos, NM)
Imaging with Scattered Neutrons
We describe a novel experimental technique for neutron imaging with scattered neutrons. These scattered neutrons are of interest for condensed matter physics, because they permit to reveal the local distribution of incoherent and coherent scattering within a sample. In contrast to standard attenuation based imaging, scattered neutron imaging distinguishes between the scattering cross section and the total attenuation cross section including absorption. First successful low-noise millimeter-resolution images by scattered neutron radiography and tomography are presented.
H. Ballhausen; H. Abele; R. Gaehler; M. Trapp; A. Van Overberghe
Research about correlation between the performance of plate heat exchanger and the number of plates
Plate heat exchangers are very important equipments used in industrial applications. The paper presents an analysis related to the influence of the number of plates on the performance of a heat exchanger. 3D models are made for eight cases and using ... Keywords: finite element method, fluid flow, heat exchanger effectiveness, log mean temperature difference, mesh, number of plates, plate heat exchanger
Roxana Grigore; Sorin Popa; Aneta Hazi; Gheorghe Hazi
A high-performance ATM switch based on modified shuffle-exchange network
This paper presents an output buffering ATM switch, called modified shuffle-exchange network (MSN) that is obtained by inserting a connection pattern just after every other shuffle-exchange stage. The purpose of modifying a shuffle-exchange network by ... Keywords: Destination tag routing scheme, Internal conflict, Output buffering ATM switch, Performance evaluation, Shuffle-exchange network
Hasan Cam
Measurement of flow field and local heat transfer distribution on a scraped heat exchanger crystalliser surface
Measurement of flow field and local heat transfer distribution on a scraped heat email@example.com Geert-Jan Witkamp firstname.lastname@example.com Abstract In a cylindrical scraped heat exchanger crystallizer exchanger surface has been studied by direct measurements of the heat exchanger surface temperature
Effects of winglets to augment tube wall heat transfer in louvered fin heat exchangers
Effects of winglets to augment tube wall heat transfer in louvered fin heat exchangers Paul A Abstract The louvered fin heat exchanger, a type of compact heat exchanger, has been used heavily transfer along the tube wall of the compact heat exchanger through the use of winglets placed
Thole, Karen A.
The Geometric Characterization and Thermal Performance of a Microchannel Heat Exchanger
The Geometric Characterization and Thermal Performance of a Microchannel Heat Exchanger for Diesel exchanger that extracts the heat from the exhaust. In this study, a cross-flow microchannel heat exchanger was geometrically examined and thermally tested under laboratory conditions. The heat exchanger, referred
Tullos, Desiree
Model based methodology development for energy recovery in flash heat exchange systems
Model based methodology development for energy recovery in flash heat exchange systems Problem with a condensing heat exchanger can be used when heat exchange is required between two streams and where at leastH, consistency etc.). To increase the efficiency of heat exchange, a cascade of these units in series can be used
McCarthy, John E.
Near-Electrode Imager
An apparatus, near-electrode imager, for employing nuclear magnetic resonance imaging to provide in situ measurements of electrochemical properties of a sample as a function of distance from a working electrode. The near-electrode imager use the radio frequency field gradient within a cylindrical toroid cavity resonator to provide high-resolution nuclear magnetic resonance spectral information on electrolyte materials.
Rathke, Jerome W.; Klingler, Robert J.; Woelk, Klaus; Gerald, Rex E.,II
Acoustic Imaging Suite
INL�s acoustic imaging technology improves methods of capturing moving images of a specified object by using a photorefractive effect to produce a full-field image of the object without using a probe to perform a full scan of the object. INL ...
Medical imaging systems
A medical imaging system provides simultaneous rendering of visible light and diagnostic or functional images. The system may be portable, and may include adapters for connecting various light sources and cameras in open surgical environments or laparascopic or endoscopic environments. A user interface provides control over the functionality of the integrated imaging system. In one embodiment, the system provides a tool for surgical pathology.
Frangioni, John V
Diagnostic Imaging Emergency Medicine
UC Davis Veterinary Diagnostic Imaging Symposium Emergency Medicine May 15, 2011 Gladys Valley Hall devoted to triage, assessment, and imaging diagnostics in emergency medicine. Speakers in this year's symposium include specialists in diagnostic imaging, and emergency and critical care. Sunday May 15, 2011 8
Hammock, Bruce D.
Direct use geothermal applications for brazed plate heat exchangers
Brazed plate heat exchanger were placed in three geothermal fluids (Klamath Falls, OR; Boise, ID; and Pagosa Springs, CO) to determine the effect of H{sub 2}S on braze material. Based on subsequent analysis, it appears that the rate of corrosion of the braze material is much slower than corrosion of copper tube materials in the same fluids. Minimum expected life of the heat exchangers based on these corrosion rates is reported to be 12 years in fluids of less than 1 ppm H{sub 2}S and 10 years in fluids of less than 5 ppm. Based on these expected lives, and using a 3% inflation rate and 8% discount rate, brazed plate heat exchangers are a clear economic choice in which the capital cost is 50% or less of the cost of a plate and frame heat exchanger for the same duty. Due to their single pass design, brazed plate heat exchangers are generally limited to approach temperatures of 10{degrees} or greater. Size limitations restrict applications to 100 gpm and/or 200 ft{sup 2} heat transfer surface area.
Rafferty, K.
Brazed plate heat exchanger were placed in three geothermal fluids (Klamath Falls, OR; Boise, ID; and Pagosa Springs, CO) in order to determine the effect of H[sub 2]S on braze material. Based on subsequent analysis, it appears that the rate of corrosion of the braze material is much slower than corrosion of copper tube materials in the same fluids. Minimum expected life of the heat exchangers based on these corrosion rates is reported to be 12 years in fluids of less than 1 ppm H[sub 2]S and 10 years in fluids of less than 5 ppm. Based on these expected lives, and using a 3% inflation rate and 8% discount rate, brazed plate heat exchangers are a clear economic choice in which the capital cost is 50% or less of the cost of a plate and frame heat exchanger for the same duty. Due to their single pass design, brazed plate heat exchangers are generally limited to approach temperatures of 10[degree] or greater. Size limitations restrict applications to 100 gpm and/or 200 ft[sup 2] heat transfer surface area.
Brazed plate heat exchanger were placed in three geothermal fluids (Klamath Falls, OR; Boise, ID; and Pagosa Springs, CO) in order to determine the effect of H{sub 2}S on braze material. Based on subsequent analysis, it appears that the rate of corrosion of the braze material is much slower than corrosion of copper tube materials in the same fluids. Minimum expected life of the heat exchangers based on these corrosion rates is reported to be 12 years in fluids of less than 1 ppm H{sub 2}S and 10 years in fluids of less than 5 ppm. Based on these expected lives, and using a 3% inflation rate and 8% discount rate, brazed plate heat exchangers are a clear economic choice in which the capital cost is 50% or less of the cost of a plate and frame heat exchanger for the same duty. Due to their single pass design, brazed plate heat exchangers are generally limited to approach temperatures of 10{degree} or greater. Size limitations restrict applications to 100 gpm and/or 200 ft{sup 2} heat transfer surface area.
Brazed plate heat exchanger were placed in three geothermal fluids (Klamath Falls, OR; Boise, ID; and Pagosa Springs, CO) to determine the effect of H[sub 2]S on braze material. Based on subsequent analysis, it appears that the rate of corrosion of the braze material is much slower than corrosion of copper tube materials in the same fluids. Minimum expected life of the heat exchangers based on these corrosion rates is reported to be 12 years in fluids of less than 1 ppm H[sub 2]S and 10 years in fluids of less than 5 ppm. Based on these expected lives, and using a 3% inflation rate and 8% discount rate, brazed plate heat exchangers are a clear economic choice in which the capital cost is 50% or less of the cost of a plate and frame heat exchanger for the same duty. Due to their single pass design, brazed plate heat exchangers are generally limited to approach temperatures of 10[degrees] or greater. Size limitations restrict applications to 100 gpm and/or 200 ft[sup 2] heat transfer surface area.
The character of resonant charge exchange involving highly excited atoms
We study the process of resonant charge exchange involving excited helium atoms with the principal quantum number n = 5 colliding with the helium ion in the ground state in the collision energy range from thermal up to 10 eV. This information may be important for the analysis of planet atmospheres containing helium, in particular, for Jupiter's atmosphere, but our basic interest is the transition from the quantum to classical description of this process, where, due to large cross sections, evaluations of the cross sections are possible. For the chosen process, quantum theory allows determining the cross section as a result of a tunnel electron transition, while classical theory accounts for over-barrier electron transitions. The classical theory additionally requires effective transitions between states with close energies. The analysis of these transitions for helium with n = 5 shows that electron momenta and their projections are mixed for a part of the states, while for other states, the mixing is absent. A simple criterion to separate such states is given. In addition, the main contribution to the cross section of resonant charge exchange follows from tunnel electron transitions. As a result, the quantum theory is better for calculating the cross sections of resonant charge exchange than the classical one and also allows finding the partial cross sections of resonant charge exchange, while the classical approach gives the cross section of resonant charge exchange in a simple manner with the accuracy of 20%.
Kosarim, A. V.; Smirnov, B. M., E-mail: firstname.lastname@example.com [Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation); Capitelli, M. [University of Bari, Department of Chemistry (Italy); Laricchiuta, A. [IMIP CNR, Sezione Territoriale di Bari (Italy)
Diffusional exchange of isotopes in a metal hydride sphere.
This report describes the Spherical Particle Exchange Model (SPEM), which simulates exchange of one hydrogen isotope by another hydrogen isotope in a spherical metal hydride particle. This is one of the fundamental physical processes during isotope exchange in a bed of spherical metal particles and is thus one of the key components in any comprehensive physics-based model of exchange. There are two important physical processes in the model. One is the entropy of mixing between the two isotopes; the entropy of mixing is increased by having both isotopes randomly placed at interstitial sites on the lattice and thus impedes the exchange process. The other physical process is the elastic interaction between isotope atoms on the lattice. The elastic interaction is the cause for {beta}-phase formation and is independent of the isotope species. In this report the coupled diffusion equations for two isotopes in the {beta}-phase hydride are solved. A key concept is that the diffusion of one isotope depends not only on its concentration gradient, but also on the concentration gradient of the other isotope. Diffusion rate constants and the chemical potentials for deuterium and hydrogen in the {beta}-phase hydride are reviewed because these quantities are essential for an accurate model of the diffusion process. Finally, a summary of some of the predictions from the SPEM model are provided.
Wolfer, Wilhelm G.; Hamilton, John C.; James, Scott Carlton
Shape-based image retrieval applied to trademark images
In this chapter, we propose a new shape-based, query-by-example, image database retrieval method that is able to match a query image to one of the images in the database, based on a whole or partial match. The proposed method has two key components: ... Keywords: image databases, shape analysis, shape representation, shape-based image retrieval, trademark image retrieval
Ossama El Badawy; Mohamed Kamel
Similarity Retrieval of Trademark Images
The Artisan system retrieves abstract trademark images by shape similarity. It analyzes each image to characterize key shape components, grouping image regions into families that potentially mirror human image perception, and then derives characteristic ...
John P. Eakins; Jago M. Boardman; Margaret E. Graham
OpenEI Community - images
Image upload with broken thumbnail image http:en.openei.orgcommunitydiscussionimage-upload-broken-thumbnail-image
OpenEI users can upload images to the wiki by typing a new...
SNAP Image Gallery
Images Images Cutaway image of SNAP A cutaway illustration of SNAP showing some of the interior optics. Cutaway image of SNAP A computer generated cutaway illustration of SNAP Cutaway image of SNAP's primary mirror A computer generated cutaway illustration of SNAP's primary mirror image of SNAP spacecraft A computer generated illustration of the SNAP spacecraft computer generated image of SNAP A computer generated illustration of SNAP Before-and-after pictures (and Hubble Space Telescope picture) of a high-redshift supernovae discovered by the Supernova Cosmology Project in March, 1998. Before-and-after pictures (and Hubble Space Telescope picture) of a high-redshift supernovae discovered in March, 1998. This observaton showed that the expansion of the universe was accelerarting. Credit: High Redshift Supernova Search Supernova Cosmology Project
Service Providers That Exchange Data with Portfolio Manager via Web
Service Providers That Exchange Data with Portfolio Manager via Service Providers That Exchange Data with Portfolio Manager via Web Services Secondary menu About us Press room Contact Us Portfolio Manager Login Facility owners and managers Existing buildings Commercial new construction Industrial energy management Small business Service providers Service and product providers Verify applications for ENERGY STAR certification Design commercial buildings Energy efficiency program administrators Commercial and industrial program sponsors Associations State and local governments Federal agencies Tools and resources Training Service Providers That Exchange Data with Portfolio Manager via Web Services The companies listed below use EPA's Portfolio Manager web services to deliver ENERGY STAR energy performance scores and metrics as part of their
Microsoft Word - EmergencyExchangeTemplatenedrevision10-clean.docx
DEPARTMENT OF ENERGY DEPARTMENT OF ENERGY STRATEGIC PETROLEUM RESERVE (SPR) OIL EXCHANGE AGREEMENT DE-AC96-_________ This Exchange Agreement, entered into this ____ day of_____________, between the UNITED STATES OF AMERICA, acting by and through the Department of Energy, hereinafter referred to as the "GOVERNMENT" or "DOE" and_______________________, hereinafter referred to as the "Contractor." WITNESSETH: 1. AUTHORITY - That the Secretary of Energy, under the authority of the Department of Energy Organization Act (42 U.S.C. 7101 et seq.) and sections 159 and 160 of the Energy Policy and Conservation Act (42 U.S.C. 6239, 6240), having determined that the exchanging of crude oil will be advantageous to the Government and in the public interest, hereby enters into this agreement
May 7 - 8, 2012 NIEHS Trainer's Exchange - Final Report
National Trainers' Exchange for Department of National Trainers' Exchange for Department of Energy (DOE) Safety and Health Trainers Workshop Report May 7-8, 2012 Holiday Inn Knoxville Downtown World's Fair Park, Knoxville, TN 2 Table of Contents 3 Workshop Report 12 Attachment A- Workshop Agenda 14 Attachment B- Workshop Abstracts Photographs by Jim Remington, NIEHS Top: Sharon Beard, NIEHS. Bottom: Don Ellenberger, CPWR. 3 2012 National Trainers' Exchange for Department of Energy (DOE) Safety and Health Trainers BACKGROUND The National Defense Authorization Act for fiscal years 1992 and 1993 (42 USC 7274(d)) authorized the Secretary of Energy to make awards: "to provide training and education to persons who are or may be engaged in hazardous substance response or emergency response at DOE nuclear weapons facilities; and to develop response curricula
Nitrate Anion Exchange in Pu-238 Aqueous Scrap Recovery Operations
Strong base, nitrate anion exchange (IX) is crucial to the purification of {sup 238}Pu solution feedstocks with gross levels of impurities. This paper discusses the work involved in bench scale experiments to optimize the nitrate anion exchange process. In particular, results are presented of experiments conducted to (a) demonstrate that high levels of impurities can be separated from {sup 238}Pu solutions via nitrate anion exchange and, (b) work out chemical pretreatment methodology to adjust and maintain {sup 238}Pu in the IV oxidation state to optimize the Pu(IV)-hexanitrato anionic complex sorption to Reillex-HPQ resin. Additional experiments performed to determine the best chemical treatment methodology to enhance recovery of sorbed Pu from the resin, and VIS-NIR absorption studies to determine the steady state equilibrium of Pu(IV), Pu(III), and Pu(VI) in nitric acid are discussed.
Pansoy-Hjelvik, M.E.; Silver, G.L.; Reimus, M.A.H.; Ramsey, K.B.
Data Exchange (Smart Grid Project) | Open Energy Information
Exchange (Smart Grid Project) Exchange (Smart Grid Project) Jump to: navigation, search Project Name Data Exchange Country United Kingdom Coordinates 55.378052°, -3.435973° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":55.378052,"lon":-3.435973,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}
Technical Exchange and Cooperation Agreement between the Department of
Technical Exchange and Cooperation Agreement between the Department Technical Exchange and Cooperation Agreement between the Department of Energy and the European Atomic Energy Community Technical Exchange and Cooperation Agreement between the Department of Energy and the European Atomic Energy Community The objective of this technical arrangement is to establish a framework for co-operation between the Parties in the field of nuclear-related technology research and development based upon mutual benefit. The co-operation is intended to occur in specific areas where the programs of the Parties complement one another as well as those in which comparability exists. 220.127.116.11.3.3_eu_agreement.pdf More Documents & Publications International_Agreements_January_2001_December_2004.pdf International Agreements Comments Scanned_Agreement.pdf
DOE Hydrogen Analysis Repository: Cost Analysis of Proton Exchange Membrane
Cost Analysis of Proton Exchange Membrane Fuel Cell Systems for Cost Analysis of Proton Exchange Membrane Fuel Cell Systems for Transportation Project Summary Full Title: Cost Analysis of Proton Exchange Membrane (PEM) Fuel Cell Systems for Transportation Project ID: 196 Principal Investigator: Eric Carlson Keywords: Fuel cells, fuel cell vehicles (FCV), transportation, costs Purpose Assess the cost of an 80 kW direct hydrogen fuel cell system relative to the DOE 2005 target of $125/kW. The system includes the fuel cell stack and balance-of-plant (BOP) components for water, thermal, and fuel management, but not hydrogen storage. Performer Principal Investigator: Eric Carlson Organization: TIAX, LLC Address: 15 Acorn Park Cambridge, MA 02140-2328 Telephone: 617-498-5903 Email: firstname.lastname@example.com Additional Performers: P. Kopf, TIAX, LLC; J. Sinha, TIAX, LLC; S. Sriramulu, TIAX, LLC
Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange
Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Hydrothermal Exploration Best Practices and Geothermal Knowledge Exchange on Openei Abstract Though exploring for hydrothermal resources is not new, advances in exploration technologies and the pursuit of less visible resources have created a need to outline exploration best practices. This multi-year study outlines 21 geothermal exploration regions in the Western United States. These regions were developed based on the U.S. Geological Survey (USGS) physiographic regions, then adjusted to fit geothermal parameters such as differences in geologic regime, structure, heat source, surface effects