|
|
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?
% A p; J. _. J4 g, |- A4 L& nAmount of energy used today to heat domestic water is enormous.7 e; S* p$ x1 M' p( N& B
Compared to burning of fossil fuels, direct energy from the Sun produces heat
2 F) d6 B1 p/ b6 L2 D+ j) o( ?that is almost free, environmentally clean and socially more acceptable.0 X0 h& \1 |( e; X/ `" P
Possible energy savings for hot water in sunnier places are 80 percent or more7 H- N1 b6 L2 P3 {4 L) @ e
and in cloudiest climates are from 50-60 percents. |
|
发表于 2009-8-1 07:05:49
