Quote:
Originally Posted by Piwoslaw
Put those coils in groundwater and then you'd see improvement. Doable with a GSHP.
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I measured the temp of the condenser coils yesterday and got readings in the 95 to 110 F range. My kitchen temp was about 65 at the time.
So this would suggest to me that using the coil temp to directly heat the water heater tank won't work so well, but if there is a pre-heater tank, with cooler water, it would work.
I know my ground temp is generally 50 to 55 degrees F (with seasonal swings) when you get down a meter or two.
So, it would certainly improve the efficiency of the reefer, and the low-grade heat put into the earth could be re-harvested with a GSHP.
In this case, the ground would be like a giant storage battery.
Sometimes, if there is water migration through the earth, the water carries away the stored heat. The other side of this is that it brings new ground-temp heat...
Regards,
-AC_Hacker