Why solar water heating? & z' L' E( i8 g& yAmount of energy used today to heat domestic water is enormous.. h5 F7 w. B: J0 d1 T3 g2 s
Compared to burning of fossil fuels, direct energy from the Sun produces heat" Y3 K: H* ^7 ]" f7 K: ?
that is almost free, environmentally clean and socially more acceptable.5 X+ U; [. f- m# I1 n9 w b9 J2 ~* M
Possible energy savings for hot water in sunnier places are 80 percent or more ( C: f* s g; B& f% t rand in cloudiest climates are from 50-60 percents.
发表于 2009-8-1 07:05:49
