Berkeley Lab
Energy Technologies Area
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Art Rosenfeld
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Energy & Financing
Occupant Behavior
Windows and Envelope Materials
Cool Surfaces
City and Districts
Researchers in the Building Technology & Urban Systems Division (BTUS) at Lawrence Berkeley National Laboratory develop data and technologies that increase energy efficiency and improve the health, safety and comfort of building occupants, in the United States and worldwide.
We work closely with industry partners, academics and government officials to achieve these goals, and share our research widely.
We are at the forefront of cutting-edge research that redefines building technology and explores all areas of urban systems.
We have been leaders for decades in developing energy-efficient windows, improving indoor air quality, coming up with new ideas to fix the nation's electricity grid, and so much more.
Visit our research areas at the right to find out more.
Explore our tools, guidebooks and software and download for free.
We offer a variety of technologies designed to simulate and model real-world circumstances to assist in energy-saving programs and help building owners build better buildings. These tools can help calculate performance of building systems like windows and shades, help consumers and builders pick the best windows for a variety of applications and much more.
Iain Walker
Mechanical Staff Scientist/Engineer
ISWalker@lbl.gov
eta.lbl.gov/people/Iain-Walker
Dr. Iain Walker is a scientist at Lawrence Berkeley National Laboratory (LBNL). He has more than 20 years of experience as a building scientist and consultant, conducting research on energy use, ventilation, moisture, performance simulation, and commissioning/diagnostic issues in residential buildings. His current work focuses on retrofits, Zero/Low Energy Homes and heating, ventilation, and air-conditioning (HVAC) systems in residential buildings through field and laboratory evaluations, modeling and simulation activities, and standards setting. He is Executive Editor and member of the board of Home Energy magazine. He is the task group leader for the American Society of Testing and Materials (ASTM) standards committees on building and duct system air leakage and sealant longevity. For the American Society of Heating, Refrigerating, and Air-conditioning Engineers (ASHRAE) he serves on National Standards committees for indoor air quality, weather, moisture design, and equipment air leakage. He also serves on Building Performance Institute (BPI) and Residential Energy Services Network (RESNET) Technical Committees, the Affordable Comfort (ACI) conference planning committee and provides leadership and technical input to many local, state, national and international bodies.
Reducing Air Handler Electricity Use: More Than Just a Better Motor
Authors: I.S. Walker; M.D. Mingee
Sealant Longevity for Residential Ducts
Authors: I.S. Walker; M.H. Sherman
Ventilation Technologies Scoping Study
A study of pressure losses in residential air distribution systems
Authors: B. Abushakra; I.S. Walker; M.H. Sherman
Accuracy of flow hoods in residential applications
Authors: C.P. Wray; I.S. Walker; M.H. Sherman
An Easier Way to Measure Duct Leaks
Comparison between predicted duct effectiveness from proposed ASHRAE standard 152P and measured field data for residential forced air cooling systems
Authors: J.A. Siegel; J.A. McWilliams; I.S. Walker
Dirty air conditioners: Energy implications of coil fouling
Authors: J.A. Siegel; I.S. Walker; M.H. Sherman
Laboratory Study of Pressure Losses in Residential Air Distribution Systems
Authors: B. Abushakra; I.S. Walker; D.J. Dickerhoff; M.H. Sherman
Potential Benefits of Commissioning California Homes
Authors: N. Matson; C.P. Wray; I.S. Walker; M.H. Sherman
©2019 Energy Technologies Area, Berkeley Lab.