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Old 06-26-14, 10:21 AM   #1
thowell2695
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Join Date: Jun 2014
Location: ohio
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Default Modify heat pump to use cistern water

I have a 2 1/2 ton AC Heat pump that I want to modify. I have a Cistern that is 10Ft deep by 10 ft wide by 20 ft long full of water. I would like to use that water to raise the efficency of my heat pump.

My idea is to replace the outside coils with a flat plate heat exchanger (Refrigerant to water) and pump the cistern water through it. I also wanted to add a AQUEFIERŽ Heat Recovery Unit to provide hot water from the waste heat in the system.

Does this sound realistic? Given the depth of the cistern and the volume of water my assumption was that it should maintain a fairly consistant temperature, even with the heat pump attached. Does anyone know of any studdy on below ground water and thermal conductivity. I am sure their are volumes out there. I have read that a 10 foot cube of water at a depth of over 10 feet underground is capable of cooling a house but I am skeptical.

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flat plate heat exchanger, geothermal, midofy heat pump

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