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hotwiredu
Joined: 02 Aug 2005
Posts: 4
Location: usa tennessee
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dougal
Joined: 15 Jan 2005
Posts: 7184
Location: South Kent
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 Posted: Wed Aug 10, 05 11:07 am Post subject: |
 
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Hello hotwiredu, and welcome to the site.
Here in the UK, and I'd guess Tennessee ain't that different, availability of solar heat is seasonally out of phase with the requirement for domestic space heating - so it ain't done much, as such. (But as passive solar architecture, it does have a significant part to play.)
There's loads of technical reasons that direct heating of air (other than in passive solar) is *not* preferred to indirect methods using a liquid (usually watery) to *convey* the heat. (I'm thinking of thermal mass, convection vs conduction, leakage, etc, and accordingly the required size of the collector...)
However, a fairly small quantity of moving, and quite warm, air is very useful for drying crops, and that requirement does (generally) come at a time when solar heat is readily available!
Accordingly, if you Google :
solar dryer
then you will find loads of pictures and plans...
Otherwise Google :
"passive solar"
and even with the quote marks, you'll get over 240,000 matches...
Hope there's some help there for you! |
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Nick Parsons
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