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Why solar water heating?
- O0 j% u' Z9 W1 X6 CAmount of energy used today to heat domestic water is enormous.6 D6 l5 v% [8 J/ Y$ ?. t m( y8 ]" F
Compared to burning of fossil fuels, direct energy from the Sun produces heat
1 K% Y: c- {' Z0 Pthat is almost free, environmentally clean and socially more acceptable.
& q3 f" L' E. U# mPossible energy savings for hot water in sunnier places are 80 percent or more
2 ^2 P \' Q, Q) F# Tand in cloudiest climates are from 50-60 percents. |
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发表于 2009-8-1 07:05:49
