• rumba@lemmy.zip
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    5 days ago

    How about running water through the back side of the panels to keep them cool, transfer the heat into a heat battery (sand) then us that to assist your hot water heater.

      • rumba@lemmy.zip
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        5 days ago

        Right on. and PV get’s less efficient when it gets hot, I’m unsure if there’s enough waste heat to do anything useful. but there is at least a marginally good reason to cool them.