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To: musicman; ChiMark

Well let’s say it is 28% efficient (I don’t know what it really is). Here in central California the sun’s energy is about 720 watts per square meter on average for 6 hours a day in the summer. 28% of that is about 202 watts generated per square meter for 6 hours a day. So that’s about 1.21 kWh of electricity per day per square meter.

That 8500 BTU air conditioner should take about 950 watts to operate depending on its efficiency. If it is on (that is actually running) approximately 20% of the day it should take about 4.56 kWh of electricity each day.

Therefore it would take about 4.2 square meters (or a little less than 7 feet by 7 feet) of these cells to generate the needed energy to power a 8500 BTU air conditioner including a 10% loss getting from DC to AC.

And the sun shines for more than 6 hours a day here.


12 posted on 11/25/2008 2:09:29 AM PST by DB
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To: DB
If it is on (that is actually running) approximately 20% of the day it should take about 4.56 kWh of electricity each day.

Therefore it would take about 4.2 square meters (or a little less than 7 feet by 7 feet) of these cells

An air conditioner that small is probably a window air conditioner and will run at night.

Better get some batteries, a charger, an inverter, and a lot of money. In addition, the losses from the charger and inverter will make the required amount of solar panels even larger.

24 posted on 11/26/2008 4:48:25 PM PST by SteamShovel (Global Warming, the New Patriotism)
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