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To: Hodar; Blood of Tyrants; MainFrame65
8 “Or, you can use solar cells to generate the weak electrical field to break the H2O bond ”

The Inefficiencies of Solar Power
(Based upon a horizontal PV array located at
the average continental U.S. latitude of 38º.)

ref. source loss
(%)
power
(per m2)
1.
Solar flux
-
1,368 W  
2.
Atmospheric losses
45
752 W  
3.
Night times losses
50
376 W  
4.
Solar angle losses
50
188 W  
5.
Cell conversion losses
88
22.6 W  
6.
DC®AC inverter losses
10
20.3 W  
7.
Net efficiency
 
1.5%  
8.
Net energy             (per m2 per day)
 
0.5 kWh  
9.
Value of energy     (per m2 per day)
 
4.3 ¢  
10.
Solar panel cost               (per m2)
 
$530  
11.
Payback period
 
33 years  

How much energy is that "0.5kWh" daily energy production number in line eight?

  1. It is the amount of energy that will light a single 60 watt light bulb for 8 hours.
  2. It is the energy equivalent of 2 oz of gasoline!
  3. It is the energy released by burning 1/4 pound of firewood.
  4. It is the amount of energy contained in four scoops of vanilla ice cream.
  5. It is 2% of the average daily household consumption of energy.

--Boot Hill

103 posted on 01/23/2005 10:09:27 PM PST by Boot Hill (How do you verbalize a noun?)
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To: Boot Hill
" (Based upon a horizontal PV array located at the average continental U.S. latitude of 38º.) "

I appreciate the statistics - including the formatted table, which I plan to shamelessly steal from you to add to my own collection of useless energy facts - but I question the HORIZONTAL orientation. Why would it not be angled at the latitude value? You have a number for solar angle loss, that probably includes the average of 13.4% loss from this avoidable pointing error.

My solar water heating panels are appropriately angled - it is a trivial task, and allows rain to wash the dust off, as well.

107 posted on 01/24/2005 6:14:24 AM PST by MainFrame65
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To: Boot Hill
I dispute your post thusly:

The film can convert up to 30 per cent of the sun's power into usable, electrical energy. Today's best plastic solar cells capture only about six per cent.

Sargent and other researchers combined specially-designed minute particles called quantum dots, three to four nanometres across, with a polymer to make a plastic that can detect energy in the infrared.

Infrared light is not visible to the naked eye but it is what most remote controls emit, in small amounts, to control devices such as TVs and DVD players.Link

And even more in depth data may be found here

112 posted on 01/24/2005 3:23:03 PM PST by Hodar (With Rights, comes Responsibilities. Don't assume one, without assuming the other.)
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