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Why solar water heating?( [; O- A: E8 a3 h2 L
Amount of energy used today to heat domestic water is enormous.
* A/ g7 D+ n6 @2 M6 k+ lCompared to burning of fossil fuels, direct energy from the Sun produces heat' M# }, I4 s$ L3 H; j! ^3 V+ ^8 |
that is almost free, environmentally clean and socially more acceptable.7 D' C c2 D4 p9 a! @$ ^# x4 D6 G
Possible energy savings for hot water in sunnier places are 80 percent or more
- G# X& j; s2 `, mand in cloudiest climates are from 50-60 percents. |
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发表于 2009-8-1 07:05:49
