|
|
马上注册，结识高手，享用更多资源，轻松玩转三维网社区。
您需要 登录 才可以下载或查看，没有帐号？注册
x
Why solar water heating?4 m& G* t9 t5 `: b
Amount of energy used today to heat domestic water is enormous.
4 f9 u7 {/ X; m/ M8 D: gCompared to burning of fossil fuels, direct energy from the Sun produces heat
9 j ^# E7 s, z, ethat is almost free, environmentally clean and socially more acceptable.' S. h. v, R9 I
Possible energy savings for hot water in sunnier places are 80 percent or more) _; m$ ?- q- O6 P! v
and in cloudiest climates are from 50-60 percents. |
|
发表于 2009-8-1 07:05:49
