公开(公告)号：US3908381A

公开(公告)日：1975-09-30

申请号：US52553474

申请日：1974-11-20

Applicant: SPERRY RAND CORP

Inventor： BARBER ROBERT E ,  NICHOLS KENNETH E ,  PRIGMORE DARYL R

IPC: F01K3/26 ,  F01K25/08 ,  F03G4/00 ,  F03G4/02 ,  F03G4/04 ,  F03G4/06 ,  F03G7/04 ,  F03G7/00

CPC classification number: F01K25/08 ,  F01K3/267 ,  Y02E10/10

Abstract: A geothermal energy transfer and energy utilization system makes use of thermal energy stored in hot solute-bearing well water to generate super-heated steam from an injected flow of clean water; the super-heated steam is then used for operating a turbinedriven pump at the well bottom for pumping the hot solute-bearing water or brine at high pressure and always in liquid state to the earth''s surface, where it is used by transfer of its heat to a closed-loop heat exchanger-turbine-alternator combination for the generation of electrical power. The steam exhausted from the deep well pump-driving turbine is also returned to the earth''s surface, where its residual energy is efficiently extracted in the surface power generating system and where it is then converted into cooled water for return to the deep well pumping system. Residual concentrated solute-bearing water is normally pumped back into the earth.