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re: practical print info
21 feb 1997
ren=?iso-8859-1?q?=e9e green wrote:
>i was wondering if would be possible to power an average sized newstand
>in manhattan nyc. ny with pv cell panels.
sure. this would be trendy, make people feel ecological all over, and maybe
sell lots of newspapers...
>how big would a panel have to be? could it be lit and heated by pv alone?
sure. with a little insulation, a 1500 watt heater should do, with a dozen
100 watt light bulbs running day and night? let's see: 2700 watts, throw in
10% for the inverter and another 10% for battery charging in this proud
independent renewable off-grid system, and we have 80 kwh/day...
nrel says nyc gets 3 kwh/m^2/day of sun at a 66 degree south tilt in december,
so at 5% efficiency, we need 533 square meters or 5739 square feet of panels,
if i did that calculation correctly. if the newstand were 12' wide, we might
use a tilted panel 478' long, overhanging 194' on the ground and extending
437' up, like a 44-story building.
>or is this too much to ask?
well, it wouldn't be cheap, $93,000 at 3.50 per peak watt, not counting the
batteries, but after all, this is the big apple. shading might be a problem,
and the building inspector might have to be heavily bribed.
hope this helps.
nick
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