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Why solar water heating?# I1 O$ K& k8 H0 q4 W; d! q
Amount of energy used today to heat domestic water is enormous.
4 I$ w5 k+ g. B4 w$ m7 rCompared to burning of fossil fuels, direct energy from the Sun produces heat: B% ~& W/ a" {. |* s! H; B
that is almost free, environmentally clean and socially more acceptable.$ [" X8 D( x- p* N3 N3 ~7 p g
Possible energy savings for hot water in sunnier places are 80 percent or more, \# J6 l- E& z7 N# u
and in cloudiest climates are from 50-60 percents. |
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发表于 2009-8-1 07:05:49
