[TRNSYS-users] Question about Type 563 hybrid solar panel

David BRADLEY d.bradley at tess-inc.com
Thu Aug 20 10:29:12 PDT 2015

  In order to get at additional values that are computed by the Type 
you'd need to have access to a Fortran compiler and would have to modify 
the source code, recompile the appropriate DLL, and modify the proformas.

  As for your question about the outlet temperature being below the 
inlet temperature, bear in mind that the model takes radiation losses 
into account and that if you have flow at night you can cool the working 
fluid down by means of radiation loss from the panel surface to the 
night sky.

On 08/20/2015 07:31, Benjamin Stobbe wrote:
> Dear people,
> The last week i played around with the Type 563 hybrid solar panel, 
> but i was wondering in the description in the documentation they do a 
> lot more calculations than which are coming out of the model. For 
> example reasons for me to use trnsyst is to see what happens in the 
> hybrid solar panel and I mean the thermal side. The formulas are 
> really clear but if I see what output I can get out of the model I 
> miss some. For example the temperature of the pc cell so how warm will 
> the pv cell becomes this is interesting to know because in that way 
> you can see how much you cool the panel down with the flow of water on 
> the backside.
> Some results which coming out of the model don’t make sense for  me 
> for example how is it possible that the outlet temperature is lower 
> than the inlet temperature and also lower than the ambient 
> temperature. Looks like the solar panel is cooling the water down and 
> I think this is a bit strange.
> I hope to hear from you soon.
> Best regards,
> Benjamin Stobbe
> _______________________________________________
> TRNSYS-users mailing list
> TRNSYS-users at lists.onebuilding.org
> http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org

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

d.bradley at tess-inc.com


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