Virginia Man Creates ?Sand Battery? Solar Heating System

Use the term “solar heating” in a conversation, and your listener will likely think of “solar water heating” (or, maybe, a solar thermal system). But solar space heating certainly isn’t a new concept, even if it’s not the first thing to come to mind: passive solar orientation makes use of it, and numerous designs exist [...]

Source: http://feedproxy.google.com/~r/residential-solar/~3/MV25jDiYbBc/

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