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Re: geothermal + no compressor
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Posted by Ethan on Monday, 5 July 2010, at 8:12 p.m.,
in response to Re: geothermal + no compressor, posted by Ethan
House heaters are also rated in BTU/hour and in my area around 100,000 BTU/hour is normal for an average size house with typical construction. With the same 5F DeltaT (85 to 80) it would require over 40 GPM of 85F water at full load to meet the full load requirements.
A better solution may be to modify the system to bypass the heat pump when the source water temperature conditions are favorable and run through the heat pump when they are not. I have often thought that there was room for tying a solar collector/storage with a heat pump with bypass function to give a highly functional system.
In sort I don't think a standard closed loop typically used in a geothermal system would give much in the way of performance striaght to a heat exchanger but with a few tweeks and the right ground conditions it may be worth further investigation.
Ethan
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