"Real" Sun Hours [RE-wrenches]

[Windy Dankoff, Dankoff Solar]

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>
>Measurements are made with pyranometers and the insolation recorded is
>listed in units of peak sun hours. This is an average daily energy delivered
>by the sun ...
>Bill.


I've heard that most solar data (pyranometer, says Bill) relates 
directly to THERMAL energy and it differs from data that is properly 
gathered for PV yield. I hope somebody can give us the low-down 
finding data appropriate to PV. I need a simplified method for 
estimating PV yield around the world, based on the NASA site.

Regarding using a C-40 AH readout for solar data, it measures charge 
current, so I presume it would be reduced by the unit's charge 
controlling function when batteries are high.

Windy

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