Quote:
Originally Posted by Fordguy64
So this ice bank idea is kind of awesome. Although it seems for most cases it pays back faster if you have lower electric rates at night. I don't believe I have that. But I have almost enough solar to run a 12kbtu unit. So my first test rig might be two tanks of water for hot and cold. Hook up the solar and see if a can freeze a tank of water! Sounds easy
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Solar thermal is a LOT more efficient than solar PV. In heating season, trying to freeze your cistern with the heat pump and thawing it out with a smallish ground loop and/or solar thermal would be ultimately effective. There are panels being made now, today, that do both.
dualsun wave panel (rated at 250W pv plus 900W thermal)
Solar angel is another brand that is available.