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System Advisor Model (SAM)

POA on cell

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Princess_Zaynab
Topic Author

04 Jul 2018 15:44 #6322 by Princess_Zaynab

POA on cell was created by Princess_Zaynab

Hello,

Please I am writing because I have a question about a value.
I make simulation of HCPV system. Then I go to profiles, I watch POA on cell. I want to know what is exactly this value (the equation please) and what is the relation with beam irradiance.

Thanks in advance,
Zaynab

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pgilman

05 Jul 2018 16:45 #6323 by pgilman

Replied by pgilman on topic POA on cell

Dear Zaynab,

"POA on cell" is the solar irradiance incident on the surface of the concentrating module. It is calculated as follows:

POA = DNI * soiling * IAM * alignment * wind flutter * optical

The inputs for the error factors are on the Module and Array input pages.

If you set all of the losses to 1, then you should see that POA = DNI.

Best regards,
Paul.

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