Why solar water heating? 6 c2 u! m3 T+ D# Q1 EAmount of energy used today to heat domestic water is enormous. - b* O$ z: j8 s: k! zCompared to burning of fossil fuels, direct energy from the Sun produces heat I$ i) Y- K5 xthat is almost free, environmentally clean and socially more acceptable. 1 a' ?4 J4 p+ A* [0 pPossible energy savings for hot water in sunnier places are 80 percent or more+ g7 {2 I0 c& r* o
and in cloudiest climates are from 50-60 percents.
发表于 2009-8-1 07:05:49
