2 Replies Latest reply on Jun 26, 2014 11:38 PM by Jared Conway

# Leaving and net radiation rate (thermal) calculation

I am a student working on my bachelor thesis. I need to make an energy balance for my model. I have heat source in the middle of the model and also solar radiation of intensity 800 W/m^2 at angle 90 degrees to the model. The problem is with net radiation rate (thermal) and leaving radiation rate (thermal). I need to know the rules to calculate them to compare the results.. can anyone help?!

• ###### Re: Leaving and net radiation rate (thermal) calculation

build a control volume diagram on paper, you'll see that thing are pretty straight forward

here's the hint

net = leaving - arriving

but usually your control volume is in = out

so you need to arrange the equations appropriately

there should be a post on here where i did an example of an energy balance
{"ft_lang_label":"__label__en","ft_lang_prob":0.9321337,"math_prob":0.9580789,"size":603,"snap":"2019-13-2019-22","text_gpt3_token_len":151,"char_repetition_ratio":0.098497495,"word_repetition_ratio":0.17307693,"special_character_ratio":0.25207296,"punctuation_ratio":0.07079646,"nsfw_num_words":0,"has_unicode_error":false,"math_prob_llama3":0.97510856,"pos_list":[0],"im_url_duplicate_count":[null],"WARC_HEADER":"{\"WARC-Type\":\"response\",\"WARC-Date\":\"2019-03-26T02:03:48Z\",\"WARC-Record-ID\":\"<urn:uuid:1b814b27-3048-480e-80c3-302c946c10ec>\",\"Content-Length\":\"95505\",\"Content-Type\":\"application/http; msgtype=response\",\"WARC-Warcinfo-ID\":\"<urn:uuid:4a0401cd-c627-4674-a1cd-85d6bf95d8a3>\",\"WARC-Concurrent-To\":\"<urn:uuid:55f21f11-5f49-4eb2-aa2e-ec76b0b61386>\",\"WARC-IP-Address\":\"104.117.37.203\",\"WARC-Target-URI\":\"https://forum.solidworks.com/thread/83026\",\"WARC-Payload-Digest\":\"sha1:VBRCI3PFIWRNWMY675GNATZG6H2N6NF2\",\"WARC-Block-Digest\":\"sha1:Z5ZOJYAFRZSL2YQSKPDOZPEL33PYC446\",\"WARC-Identified-Payload-Type\":\"text/html\",\"warc_filename\":\"/cc_download/warc_2019/CC-MAIN-2019-13/CC-MAIN-2019-13_segments_1552912204768.52_warc_CC-MAIN-20190326014605-20190326040605-00444.warc.gz\"}"}