|
|
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?
/ x& n& Y, W0 Z7 c2 L; j4 u" ZAmount of energy used today to heat domestic water is enormous.
9 X/ _1 q8 g% u2 S4 ZCompared to burning of fossil fuels, direct energy from the Sun produces heat
- N" t% s5 ?2 w, ]' {that is almost free, environmentally clean and socially more acceptable.: A6 \" C( J1 y& X- X6 n: q6 Z
Possible energy savings for hot water in sunnier places are 80 percent or more
. a+ a7 B: l+ a$ ~' wand in cloudiest climates are from 50-60 percents. |
|
发表于 2009-8-1 07:05:49
