Ground water discharge - could it be used effectively??

Discussion in 'Solar and Geothermal Water Heating Forum' started by Stevenc, Nov 27, 2009.

  1. Stevenc

    Stevenc New Member

    Messages:
    6
    Location:
    Washington, DC
    Building with underground parking 3.5 stories below ground level is at/below the water table, sump pumps run regularily. It is a fair estimate that on a dry day that the pits take on 66 gallons of water per minute with a water temp between 50-70 degrees (rainy days 120 gallons per min, heavy downpours >200 gallons per minute).

    Currently the water goes into the stormwater system. Could a geotherm system interacting with this discharge take out enough energy to heat/cool something ?? 5 tons of cooling or more??

    This is ground water at 35ft-45ft below ground level.

    Thanks for any input,
    steven
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