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Old 05-23-11, 03:55 PM   #16
Xringer
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"The water will be cycled back to the sump to cool back down, so I won't run out."


What you will have is a heat pump. It will be moving upstairs room heat into the sump water.

Unless there is a pretty large body of water in that sump, it's going to get warmed up..
How much it warms up, will depend on how hot it is that day and the exchange rate with the ground water..

If the water under the house is really moving (like an underground river),
things could work out very well..

Normally, two wells are used with an open loop system.
http://www.triterra.us/images/geothermal_openloop.jpg


One way you might be able to get some raw temperature data, would be to add some hot water to the sump pit,
wait a few minutes, and then measure how fast the water was chilling out.. (While stirring it up some).
If it displays a rapid change back to normal ground water temps.. You could be in luck..
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