If i were to put one in a desert how much watts per meter squared?
19 – 56 W/m sq.
http://en.wikipedia.org/wiki/Solar_power
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19 – 56 W/m sq.
http://en.wikipedia.org/wiki/Solar_power
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depends onthe panels big small.cheap expendsive.some houses run just on them with battery back up.a lot of money to get. but you win in the long run. more panels more juice!
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tv
Depends on the type (mono- or poly- crystalline) and efficiency of the PV cells. It differs by manufacturer.
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Howdy,
According to site on American energy independence, "every square meter of the earth’s surface, when exposed to direct sunlight, receives about 1000 watts (1 kilowatt) of energy from the sun’s light." Of course, not every square meter on earth is exposed to direct sunlight. And even if it were, the number would fluctuate based on the angle of the sun, time of day, and geographical location.
A site on science for kids explains that "to make 2,000 watts of power you need solar panels that are about 24 feet long by 10 feet high." HowStuffWorks.com notes that if we were able to capture all that energy, we could easily power our homes, offices, etc. for free. If you’re interested in learning more on the specificis, the National Renewable Energy Laboratory offers an easy-to-follow summary on how solar energy works.
Mike
References :
http://www.americanenergyindependence.com/solarenergy.html
http://www.solarenergy.org/resources/youngkids.html#8
http://www.howstuffworks.com/solar-cell.htm/printable
http://www.nrel.gov/learning/re_solar.html
If you had solar panels big enough to supply a house with electricity and not use the national grid they would be so expensive that you would need to use them for years and years before you started to reap the rewards, planning permission for the siting of such large panels would probably not be granted anyway.
Chris.
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Not nearly as much as it takes to make them in the first place.
Many Americans are buying into the idea that solar panels would make a green addition to their home. This is far from the truth. We all want to capture that "Free" sunlight to run our machines. Just set it up, and plug in to clean power. The problem is that solar panels are not a green solution at all. It is only an acceptable technology if the man hours, toxic chemical exposure, energy, and pollution involved in manufacturing solar panels at the expense of China’s people is acceptable to you. This is the opposite of "Global Thinking" and is totally irresponsible.
The best way to capture the energy of the sun is with passive systems or by growing crops. This is Green Thinking and Globally Responsible.
When we all learn to THINK we will all be ready to really make a difference, until then, every new gadget adds to the problem.
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Look here at the process to make a single tiny solar cell and imagine that magnified several million times. Not so green is it?
http://www.thesolarplan.com/articles/your-own-solar-panel-collector.html
Solar panels are not cost effective as alternative power for homes. Those who push for huge arrays of solar panels in the deserts are proposing the most expensive way to make electricity, but don’t worry, the environmentalists will find an endangered lizard and stop it from being built.
More effective is to build a solar reflector which would heat water into steam to operate a steam engine to run a generator. At a kilowatt of solar power per meter it wouldn’t take too large a reflector. even with some energy losses to friction and such, to provide power to a house and charge a bank of batteries for the nighttime. Steam engines are very efficient at producing electricity. They also cost less and last longer than solar panels.
You could even put a fuel fired one into an electric vehicle, then instead of worrying about draining the batteries when going farther than the range of the batteries, the steam engine would just start turning the generator to charge the batteries and you could keep going. E-mail beesidemeusa@yahoo.co.uk and ask about steam-electric hybrids for more information.
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Scientists like to measure things using the metric system. However, most Americans are unfamiliar with the metric system. (Europeans use the metric system.) It is easier for Americans to think in square feet and square yards because feet and yards are common lengths in the United States. So, for the sake of clarity and because this is written for an American audience, all measurements will be converted from meters to yards.
A meter is just a little longer than a yard (about 3 and ΒΌ feet to a meter, compared with 3 feet to a yard). There are 10.8 square feet in a square meter. There are 9 square feet in a square yard (3×3=9). A simple calculation can accomplish the conversion from square meters to square yards. A square yard is 83.33 percent of a square meter. Prove this by multiplying 10.8 (the number of square feet in a square meter) by 83.33%. The answer is nine (the number of square feet in a square yard). If you perform the calculation you will see that the answer is slightly less than the whole number 9 (but close enough for our purpose). Using this conversion, we can say that a square yard of land in direct sunlight receives 1000 x 83.33% = 833 watts of solar energy. This calculation can also be used in reverse to convert yards to meters, simply divide by .8333 (833 divided by .8333 = 1000 rounded)
Every square yard of land, if exposed to direct sunlight, receives about 833 watts of solar energy. A square yard area exposed to continuous direct sunlight for six hours will have received 6 hours x 833 watts = 4,998 watt-hours of solar energy during the course of a day. In round numbers, a one square yard area will receive about 5000 watt-hours (5 kilowatt-hours) per day of solar energy. Another way to obtain this result would be to take the 6 kilowatt-hours per meter (explained above in the third paragraph) and apply the conversion calculation (6 x 83.33% = 5 rounded).
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