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Title: Enthalpy restoration in geothermal energy processing system

Abstract

A geothermal deep well energy extraction system is provided of the general type in which solute-bearing hot water is pumped to the earth's surface from a relatively low temperature geothermal source by transferring thermal energy from the hot water to a working fluid for driving a primary turbine-motor and a primary electrical generator at the earth's surface. The superheated expanded exhaust from the primary turbine motor is conducted to a bubble tank where it bubbles through a layer of sub-cooled working fluid that has been condensed. The superheat and latent heat from the expanded exhaust of the turbine transfers thermal energy to the sub-cooled condensate. The desuperheated exhaust is then conducted to the condenser where it is condensed and sub-cooled, whereupon it is conducted back to the bubble tank via a barometric storage tank. The novel condensing process of this invention makes it possible to exploit geothermal sources which might otherwise be non-exploitable.

Inventors:
 [1]
  1. (Boylston, MA)
Issue Date:
OSTI Identifier:
864541
Patent Number(s):
4380903
Assignee:
Sperry Corporation (New York, NY) OSTI
DOE Contract Number:  
AC03-79ET27131
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
enthalpy; restoration; geothermal; energy; processing; deep; extraction; provided; type; solute-bearing; hot; water; pumped; earth; surface; relatively; temperature; source; transferring; thermal; fluid; driving; primary; turbine-motor; electrical; generator; superheated; expanded; exhaust; turbine; motor; conducted; bubble; tank; bubbles; layer; sub-cooled; condensed; superheat; latent; heat; transfers; condensate; desuperheated; condenser; whereupon; via; barometric; storage; novel; condensing; process; makes; exploit; sources; otherwise; non-exploitable; latent heat; geothermal energy; electrical generator; storage tank; thermal energy; hot water; tank via; energy extraction; solute-bearing hot; thermal source; geothermal deep; energy processing; /60/

Citation Formats

Matthews, Hugh B. Enthalpy restoration in geothermal energy processing system. United States: N. p., 1983. Web.
Matthews, Hugh B. Enthalpy restoration in geothermal energy processing system. United States.
Matthews, Hugh B. Sat . "Enthalpy restoration in geothermal energy processing system". United States. https://www.osti.gov/servlets/purl/864541.
@article{osti_864541,
title = {Enthalpy restoration in geothermal energy processing system},
author = {Matthews, Hugh B.},
abstractNote = {A geothermal deep well energy extraction system is provided of the general type in which solute-bearing hot water is pumped to the earth's surface from a relatively low temperature geothermal source by transferring thermal energy from the hot water to a working fluid for driving a primary turbine-motor and a primary electrical generator at the earth's surface. The superheated expanded exhaust from the primary turbine motor is conducted to a bubble tank where it bubbles through a layer of sub-cooled working fluid that has been condensed. The superheat and latent heat from the expanded exhaust of the turbine transfers thermal energy to the sub-cooled condensate. The desuperheated exhaust is then conducted to the condenser where it is condensed and sub-cooled, whereupon it is conducted back to the bubble tank via a barometric storage tank. The novel condensing process of this invention makes it possible to exploit geothermal sources which might otherwise be non-exploitable.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {1}
}

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