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GEOTHERMAL ENERGY SYSTEM AND METHOD

  • US 3,824,793 A
  • Filed: 10/24/1972
  • Issued: 07/23/1974
  • Est. Priority Date: 10/24/1972
  • Status: Expired due to Term
First Claim
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1. The method of transfering thermal energy from an interior hot stratum of the earth for utilization adjacent the surface of said earth including the steps of:

  • pumping a first liquid initially in a relatively cool state from a first station adjacent said surface of said earth to a second station at said interior hot stratum, employing a portion of said thermal energy for converting said first liquid into a vapor at said second station, employing said vapor for driving pump means at said second station, employing said pump means for pumping a second liquid from said hot stratum to said first station at a pressure for retaining said second liquid solely in liquid state, and abstracting a portion of said thermal energy from said second liquid at said first station for performing useful work.

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