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 Post subject: PV Module Acceptance Angles
PostPosted: Thu Mar 13, 2003 3:25 pm GMT EthGMT 
One can calculate the amount of insolation that strikes a PV module by using insolation on a surface aligned normal to the sunlight and using the cosine function on the angle from the solar normal to module's normal. But, that said, I think there may be more to it because of the various tricks that the manufacturers use in making the face of the modules to reduce reflection loses. Question: Does anyone have a data on acceptance angle? Especially on the SP75, but others as well.


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 Post subject: PV Module Acceptance Angles
PostPosted: Thu Mar 13, 2003 5:18 pm GMT EthGMT 
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Goldfish
Goldfish

Joined: Fri Jan 31, 2003 2:01 am GMT EstGMT
Posts: 97
Location: Long Island, NY
Hi Gordon,

The Cosine function is fairly close. It is a little lower than the cosine function at steep angles due to reflection but that is somewhat compensated for by light coming from the rest of the sky.

Ron


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