System for the storage and recovery of heat in a captive layer
Patent 4157730 Issued on June 12, 1979. Estimated Expiration Date: 
November 11, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 11, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2461449 3757516 Cyclical energy transfer method and apparatus Geothermal power system Patent #: 4054175 InventorsAssigneeApplicationNo. 05/741165 filed on 11/11/1976US Classes:165/45GEOGRAPHICALExaminersPrimary: Myhre, Charles J.Assistant: Streule, Theophil W. Jr. Attorney, Agent or FirmInternational ClassesE21B 43/30 (20060101)E21B 43/00 (20060101) F24J 3/08 (20060101) F24J 3/00 (20060101) F28D 20/00 (20060101) Foreign Application Priority Data1975-11-13 FRAbstractTwo or more reversible wells open respectively into a "hot" zone and a "cold" zone of a reservoir or captive layer. The water of the layer is circulated within a primary circuit in a first direction corresponding to circulation within an external loop from the "cold zone" wells to the "hot zone" wells and in a second direction corresponding to circulation from the "hot zone" wells to the "cold zone" wells. Indirect heat transfer takes place between the primary circuit and a secondary heating circuit in the first direction or between the primary circuit and a secondary utilization circuit in the second direction, the flow rate within the primary circuit being regulated in both directions. | |
