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Why solar water heating?
0 q2 e6 a3 h& FAmount of energy used today to heat domestic water is enormous.( {, H8 t( p- B' j9 {
Compared to burning of fossil fuels, direct energy from the Sun produces heat
0 |+ A+ }5 E3 A, ethat is almost free, environmentally clean and socially more acceptable.* [9 {( N, ]+ M0 Z, }
Possible energy savings for hot water in sunnier places are 80 percent or more; S9 w" s% m& U. N& z' h( o
and in cloudiest climates are from 50-60 percents. |
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发表于 2009-8-1 07:05:49
