On 2005-07-18 email@example.com said:
>>I am thinking of installing a water tank to recover solar heat in
>>the attic to heat the water.
>>Can anyone suggest a good (Cheap) air to water heat exchanger that
>>I could use in my attic to recovery the solar heat . One that
>>won't block up easily with tap water minerals, I was thinking of
>>using an auto radiator. ($89.00) Has anyone ever tried to do this?
>I would be concerned about an auto radiator, because you do not know
>how it has been cleaned, or with what.
>Tony has a good idea, and it is often used here in Arizona to heat
>swimming pools (but the pipe is placed on the roof of the house).
>More recently, builders have been plumbing houses with plastic in
>the attic, and it is possible be scaulded in the shower in the late
>afternoon when the first burst comes out.
>A standard solar panel would do well, and one with the glass broken
>would be cheaper, since all you want is the heat exchanger.
If you can score one of these, try it outside, without the glass. You
may be amazed at how effective it will be. Glass covering is
over-rated - couple years ago a physicist reexamined the math on
which glass-covered solar panel design was based, found it in error.
near Mountainair, (mid) New Mexico, USA
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