Thursday Sept 1, 2011
The third solar energy company in a month has now declared bankruptcy.
I understand that it also takes a great deal of energy to actually manufacture a solar cell, so much that over the life of the cell the net gain in energy saved is questionable.
My opinion has always been that solar would best be used as a boost to water heaters. A line could be run from an existing water heater to a radiator on the roof. Given the temperatures we have had this summer, 100+, I suspect a black radiator could easily maintain a temperature of 110 for the water.
Constructing homes with porches and awnings so that no window received direct sunlight would also save energy in cooling the home. This was standard procedure in homes in the 1890s.
Here is an example of what I am describing. Both the first and second floors are ringed with porches all around the building. The result is that direct sunlight does not hit the windows. And you can sit outside in the shade. Note the French had this figured out in 1700 but now we have abandoned this great idea.
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