metroschultz,
Pump & dump? I'm not so sure I follow what you mean...
I see this term in geothermal usually meaning that an 'open loop' system is being used, and water is being drawn from the ground or river or other water source then heat is extracted and the water is then pumped on to a lake or a river or a different well where it is absorbed back into the earth.
Is this how you mean the process works?
Regards,
-AC_Hacker
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