|
|
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?
; F7 u+ F8 L* A) a3 xAmount of energy used today to heat domestic water is enormous.
. u) o: T2 y; a9 l7 W# R5 LCompared to burning of fossil fuels, direct energy from the Sun produces heat
H3 [% r! X% f0 ~# A, Zthat is almost free, environmentally clean and socially more acceptable.
, h( W% j" T W/ K8 s+ c. }7 _1 z" RPossible energy savings for hot water in sunnier places are 80 percent or more# p8 r. `' q) w% {& A/ @
and in cloudiest climates are from 50-60 percents. |
|
发表于 2009-8-1 07:05:49
