[TRNSYS-users] Heating load

[David Bradley]

Salim,
  I think this will just result in convergence problems. When you define 
an automatic heating type in TRNBuild, you are predefining the 
temperature of the zone and you are asking Type56 to tell you how much 
heat was necessary in order to get there. If you give Type56 a heating 
rate from some external system, you are asking Type56 to calculate the 
resulting zone temperature. You can do one or the other but you can't 
really do both at the same time. I would recommend that you use Type108 
as a thermostat watching your zone temperature and turning on and off 
your external heating system to maintain the set point.
Best,
  David

On 7/9/2010 09:55, salim mokraoui wrote:
>
> Dear Trnsys users,
>
> If I want to use an external heating system (external from type 56), 
> can I define, in the same time, the heating from Trnbuild, i.e. 
> specify a set temperature of the zone and calculate the heating rate 
> as an input to type 56 (output from the external system).
>
> Best regards
>
> Salim MOKRAOUI
>
> Faculté des sciences de Nancy - LERMAB
>
> BP 239
>
> 54506 Vandoeuvre.
>
> Tél 03 83 68 48 47 - mél salim.mokraoui at lermab.uhp-nancy.fr
>
>
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at cae.wisc.edu
> https://www-old.cae.wisc.edu/mailman/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
bradley at tess-inc.com

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

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