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Why solar water heating?
9 J9 G+ b& c9 L* d/ z' }Amount of energy used today to heat domestic water is enormous.
, y' j- X6 C9 s/ pCompared to burning of fossil fuels, direct energy from the Sun produces heat
" l2 n- v x: V5 dthat is almost free, environmentally clean and socially more acceptable.# Y! R* n# F1 k7 G5 A( u
Possible energy savings for hot water in sunnier places are 80 percent or more
. d3 c: F: d- j5 C2 {' p- [% band in cloudiest climates are from 50-60 percents. |
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发表于 2009-8-1 07:05:49
