[TRNSYS-users] Comparison of varies flat plate solar thermal collectors model

[David BRADLEY]

Zhe,
   In my experience, Type539 is the most complete, robust flat plate 
solar collector model. It includes thermal capacitance effects that most 
of the other collector models ignore. It has also been vetted and has 
had some fixes to make its results consistent at very low flow rates. I 
have compared it to measured data a number of times with good success 
but often you have to deviate from the manufacturer's stated performance 
values in order to get a good match.
Best,
  David

On 10/3/2012 04:54, Zhe Li wrote:
>
> Dear All,
>
> I am working on a solar thermal system. I have seen there are many 
> flat plate solar thermal collectors available in TRNSYS. However, I am 
> wondering if anybody has done some kind of comparison of these 
> collectors with real measured data. Which one would be the most 
> accurate model?
>
> I have tried to use different models for an identical system by 
> myself. The results I am getting are quite different, I am not too 
> sure why this has happened.
>
> Thank you very much for your help.
>
> Zhe Li
>
>
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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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