[TRNSYS-users] TRNSYS-users Digest, Vol 62, Issue 30

[Adrien JEZEQUEL - ITF]

Dear Mariana

You can change your TRNBUILD time base for Transfert function 
calculation in the same frame as OUTPUTS, if necessary.
The time step must be shorter than the time base and the time base 
should be a multiple of the time step.
If you have thin walls, you can define them as massless layer. In that 
case, you only have to define its thermal resistance.

Best regards
------------------------------------------------------------------------
www.itf.biz <http://www.itf.biz>
www.itf.biz <http://www.itf.biz>

	Adrien JEZEQUEL
Simulations Thermiques Dynamiques
*ITF*
	62, Rue du Bolliet
73230 St Alban Leysse
FRANCE
Phone :
Fax :
Mail:
	+33(0) 479 750 029
+33(0) 479 852 122
a.jezequel at itf.biz

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Le 18/02/2010 15:46, ghetu mariana a écrit :
>
> Hello,
>
> I’m having a problem with TrnBuild. I’m trying to describe an office 
> tower in TrnBuild and it keeps sending error messages that either the 
> timebase is too small (it’s set for 1 hour, the default value) or that 
> the capacity of a wall is too small. Thing is the wall type creating 
> the error is just fine, its capacity is good. After I fix one wall 
> type I get an error message for a different wall type. I don’t know 
> where all this is coming from.
>
> By the way, there’s an error in type52 code. The computation of the 
> convection coefficient for water inside the tubes of the cooling coil 
> for laminar flow is done considering Nu=4.36. It might be a 
> simplification but it’s not ok.
>
> Best regards,
>
> Mariana GHETU
>
> Laboratoire Génie Civil et Génie Mécanique
>
> INSA de Rennes
>
>
>
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> *Subject:* TRNSYS-users Digest, Vol 62, Issue 30
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