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Looking for help calculating heat transfer for PEX ground loop project
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[QUOTE="Dullard, post: 6849773, member: 646488"] The calcs for this aren't particularly difficult. The real problem is how to size the ground loop. Different soil and groundwater conditions make it impossible to be very precise - you'll need to miss on the high side. The suggestion to find out what commonly works in your area is a good one - it will give you a place to start. You said that 1500W did the job. Assuming that: Warning - Round numbers: 1500W is equivalent to about 5000 BTU/HR or about 0.4 Tons. Assuming a good enough heat exchanger in the trough, you'll need about 42F water at 1 GPM. If you can get the water warmer, you can use a smaller HeatX. One of the issues with ground loops can be geology. In addition to cooling the ground immediately around your pipes, you may be depleting an isolated pool of heat (longer term) - the system performance can decay over years. [/QUOTE]
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Looking for help calculating heat transfer for PEX ground loop project
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