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Why solar water heating?- G' f) H$ a7 c- u& @) A) C+ b
Amount of energy used today to heat domestic water is enormous.1 b% N( ?7 e, ~5 q/ J
Compared to burning of fossil fuels, direct energy from the Sun produces heat
k% ?3 c8 b( i5 |: C- gthat is almost free, environmentally clean and socially more acceptable.
1 G; {9 ]$ t) }; E% f z% NPossible energy savings for hot water in sunnier places are 80 percent or more, I" l' G5 e( y) s. R) W" b
and in cloudiest climates are from 50-60 percents. |
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发表于 2009-8-1 07:05:49
