@lynaghk This would be seriously cool to do for heat in your workshop http://www.iedu.com/Solar/Panels/ . Makes me want to build one.
I saw this, pretty cool. The "air locking" at night might not work on my site, though, it's windy. = )
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I saw this, pretty cool. The "air locking" at night might not work on my site, though, it's windy. = )