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Why solar water heating?
& A6 \) U( e) a+ D# n9 ~" zAmount of energy used today to heat domestic water is enormous.
5 p, Y/ Z; t7 a9 |) |9 [. NCompared to burning of fossil fuels, direct energy from the Sun produces heat
, [' y" V, O2 v7 ~$ p* E$ jthat is almost free, environmentally clean and socially more acceptable.
% e1 y- r5 j& {Possible energy savings for hot water in sunnier places are 80 percent or more
" s* T2 m9 r8 \3 y' {and in cloudiest climates are from 50-60 percents. |
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发表于 2009-8-1 07:05:49
