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