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How to calculate the heat flux from boundaries in E+

asked 2017-11-27 00:08:38 -0500

finorths gravatar image

updated 2017-11-27 06:19:45 -0500

In my case, the building is located underground and surrounded by rocks. The question is how to calculate the heat flux from boundaries or the walls into the building. What kind of output variables should I get from the EP results?

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Please use existing tags, including the software you're using if relevant (I've done it for you here)

Julien Marrec gravatar image Julien Marrec  ( 2017-11-27 06:20:04 -0500 )edit

Noted with thanks!

finorths gravatar image finorths  ( 2017-11-28 23:49:47 -0500 )edit

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answered 2017-11-27 04:19:23 -0500

Have you tried with Output:Variable "Surface Inside Face Conduction Heat Transfer Rate" ?

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Thanks for your advice. Yes, I've tried that, but there are too many surfaces in my case. In order to calculate the heat flux from the rock to the cavern, I should pick up the surfaces between them and it seems like a mission impossible.

finorths gravatar image finorths  ( 2017-11-28 21:31:56 -0500 )edit

Why not? This is exactly the variable you need, all the rest is a question of post processing - you can sum them in Excel or whatever. There is another variable Zone Air Heat Balance Surface Convection Rate - it gives you the sum of convection rates from surfaces in each zone.

Dinosaver gravatar image Dinosaver  ( 2017-11-29 12:07:55 -0500 )edit

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Asked: 2017-11-27 00:08:38 -0500

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Last updated: Nov 27 '17