Why solar water heating? " A% A4 C8 S2 dAmount of energy used today to heat domestic water is enormous.3 {$ V k. Z J
Compared to burning of fossil fuels, direct energy from the Sun produces heat 1 {- C: w$ m6 V3 D7 u9 gthat is almost free, environmentally clean and socially more acceptable.6 s* g- k0 {0 A3 x0 D0 Q5 f
Possible energy savings for hot water in sunnier places are 80 percent or more( _; s% h' G7 Q* V: r
and in cloudiest climates are from 50-60 percents.
发表于 2009-8-1 07:05:49
