Unisolar Roofing [RE-wrenches]
William Miller
wrmiller at slonet.org
Tue Mar 13 19:14:06 PST 2001
At 09:01 AM 3/13/01 -0800, you wrote:
>Remember on any roofing PV, it may not be appropriate in areas with snow, or
>in areas where economics is a major factor, as it precludes seasonal tilt.
>This loses the near 30% gain possible by seasonal angle adjustment, raising
>the PV portion of system cost proportionally.
>
I read in a Home Power article that seasonal adjustments only net a 10%
gain HP #36. What is the reality?
Also, does anyone know if there is a program available to calculate the
efficiency of a PV array oriented away from true south at various
declinations?
William Miller
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email: wrmiller at slonet.org
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