[TRNSYS-users] Ground Convection coefficient

David BRADLEY d.bradley at tess-inc.com
Wed Apr 13 12:16:16 PDT 2011


As noted in TRNBuild (where you set the back side convection 
coefficient), a value smaller than 0.001 is used to indicate direct 
contact between a BOUNDARY wall and a temperature. A large value (such 
as 999) is used with other wall categories (ADJACENT, EXTERNAL, etc.) to 
indicate good thermal contact.
Best,
  David


On 4/13/2011 10:30, pseudomino at gmx.com wrote:
> Hello,
>
> Usually, when using the assistant to create a multizone building, the 
> convection coefficient between the soil and the floor is set to 999 to 
> reproduce the absence of thermal resistance.
>
> But when I create a file using the Trnsys3D import from Sketchup, this 
> same coefficient is set by default to 0,001.
> Why is that ?
>
> Please help me understand
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://mailman.cae.wisc.edu/listinfo/trnsys-users

-- 
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI  53703 USA

P:+1.608.274.2577
F:+1.608.278.1475
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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