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Title: Geothermal energy control system and method

Abstract

A geothermal energy transfer and 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 turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth's surface, where it is used by transfer of its heat to a closed-loop boiler-turbine-alternator combination for the generation of electrical or other power. Residual concentrated solute-bearing water is pumped back into the earth. The clean cooled water is regenerated at the surface-located system and is returned to the deep well pumping system also for lubrication of a novel bearing arrangement supporting the turbine-driven pump system. The bearing system employs liquid lubricated thrust and radial bearings with all bearing surfaces bathed in clean water serving as a lubricant and maintained under pressure to prevent entry into the bearings of contaminated geothermal fluid, an auxiliary thrust ball bearing arrangement comes into operation when starting or stopping the pumping system.

Inventors:
 [1]
  1. Acton, MA
Issue Date:
Research Org.:
Sperry Research Center, Sudbury, Mass. (USA)
OSTI Identifier:
862834
Patent Number(s):
4025240
Assignee:
Sperry Rand Corporation (New York, NY)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01K - STEAM ENGINE PLANTS
F - MECHANICAL ENGINEERING F04 - POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS F04D - NON-POSITIVE-DISPLACEMENT PUMPS
DOE Contract Number:  
EY-76-C-02-2838
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
geothermal; energy; control; method; transfer; utilization; makes; thermal; stored; hot; solute-bearing; water; generate; super-heated; steam; injected; flow; clean; operating; turbine-driven; pump; bottom; pumping; pressure; liquid; earth; surface; heat; closed-loop; boiler-turbine-alternator; combination; generation; electrical; power; residual; concentrated; pumped; cooled; regenerated; surface-located; returned; deep; lubrication; novel; bearing; arrangement; supporting; employs; lubricated; thrust; radial; bearings; surfaces; bathed; serving; lubricant; maintained; prevent; entry; contaminated; fluid; auxiliary; ball; operation; starting; stopping; geothermal energy; bearing surfaces; energy transfer; thermal energy; bearing surface; radial bearing; arrangement supporting; clean water; residual concentrated; energy stored; super-heated steam; energy control; hot solute-bearing; ball bearing; heated steam; driven pump; cooled water; injected flow; generate super-heated; lubricated thrust; /417/

Citation Formats

Matthews, Hugh B. Geothermal energy control system and method. United States: N. p., 1977. Web.
Matthews, Hugh B. Geothermal energy control system and method. United States.
Matthews, Hugh B. Sat . "Geothermal energy control system and method". United States. https://www.osti.gov/servlets/purl/862834.
@article{osti_862834,
title = {Geothermal energy control system and method},
author = {Matthews, Hugh B},
abstractNote = {A geothermal energy transfer and 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 turbine-driven pump at the well bottom for pumping the hot solute-bearing water at high pressure and in liquid state to the earth's surface, where it is used by transfer of its heat to a closed-loop boiler-turbine-alternator combination for the generation of electrical or other power. Residual concentrated solute-bearing water is pumped back into the earth. The clean cooled water is regenerated at the surface-located system and is returned to the deep well pumping system also for lubrication of a novel bearing arrangement supporting the turbine-driven pump system. The bearing system employs liquid lubricated thrust and radial bearings with all bearing surfaces bathed in clean water serving as a lubricant and maintained under pressure to prevent entry into the bearings of contaminated geothermal fluid, an auxiliary thrust ball bearing arrangement comes into operation when starting or stopping the pumping system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}

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