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

[David BRADLEY <d.bradley@tess-inc.com>]

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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