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QUOTE=brian_wilbanks;172507 Placed in series, you do indeed add to the voltage. But when in paralell, you keep the same voltage but your current is increased.
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I don't see all the fuss in this HVDC line? I'd rather keep the low DC voltages at the solar panels, run it into the DC/AC inverter, then run this AC voltage to the AC grid. If someone wishes to install ten thousand solar panels five miles from the nearest AC grid, then it is their job and cost to connect to that grid. Even if there was a HVDC grid, the same problem exists of accessing these remote areas.
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from what I have read, sunlight contains about 1 KWH per square meter. I'm sure our current solar panels aren't efficient enough to utilize all this energy though. Much of it is simply converted to heat which is disipated. But even with solar cells that are 100% efficient, 1KWH is all you can get out of 1 sq meter of surface area.
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I don't know the science and math comparisons, but I've read that solar 'heat' collectors are much more efficient than photovoltaic collection...and cheaper! In this case, thousands of mirrors collect sunlight and redirect it to a collector, in which oil or a salt solution is heated to extremely high temperatures, which in turn creates steam, which run turbine generators, which create electricity. And...these oil and salt solutions can maintain much of that heat during non-sun times so as long as it continues to produce steam, power is being created.
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Until someone can prove me wrong, I believe cold fusion is a myth....like perpetual motion or that car that I keep hearing people claim is locked away in their neighbors garage that gets 400 mpg and runs either on water or vegetable oil.
Proof is in the pudding and to me, Newtons laws are still rock solid.
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The USA and other nations, for several years now, have been building the international space station, and the technology to provide electricity for all of their needs, is photovoltaic and battery storage. If this can be done efficiently on the space station, then why is there such debate at home about converting to solar and wind?????