[TRNSYS-users] About building loads calculation in TRNSYS

[David BRADLEY]

Catherine,
   You are quite correct that integrating solar collectors with the 
building skin will change the loads on the building. I would guess that 
in simulating such a situation, most people ignore the interaction and 
assume that the presence of the collectors changes the loads only 
slightly in comparison to the magnitude of the loads themselves.

   There are a few models of building-integrated photovoltaic panels in 
the TESS Green Building Library (now called the TESS Electrical Library) 
but they all assume an air gap behind the absorber surface and in front 
of the building skin.
Kind regards,
  David


On 12/9/2010 19:33, Catherine wrote:
>         I want to calculate the building loads when the flat-plate 
> collector stick to the flat roof , but , how to achieve it using 
> TRNSYS ? Well , I tend to utilize the Type 56 for building model .By 
> the way , my building is an ordinary six-storey residential building 
> .And there is no air gap between the collectors and the roof-covering 
> . As well as collectors completely covered the flat roof , except the 
> location for lacing the water tank .
>        On the one hand , since the collector block the radiation for 
> the roof , which alters the energy balance of building , as well as 
> causes changes in building loads. On the other hand , for the original 
> building , after the collector added to the roof, the thermal 
> resistance increases , with the building heat through the roof 
> decreasing .
>         Wish some suggestions .
>
>
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> TRNSYS-users at cae.wisc.edu
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-- 
***************************
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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