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Title: Heat pump augmentation of nuclear process heat

Abstract

A system is described for increasing the temperature of a working fluid heated by a nuclear reactor. The system consists of: a high temperature gas cooled nuclear reactor having a core and a primary cooling loop through which a coolant is circulated so as to undergo an increase in temperature, a closed secondary loop having a working fluid therein, the cooling and secondary loops having cooperative association with an intermediate heat exchanger adapted to effect transfer of heat from the coolant to the working fluid as the working fluid passes through the intermediate heat exchanger, a heat pump connected in the secondary loop and including a turbine and a compressor through which the working fluid passes so that the working fluid undergoes an increase in temperature as it passes through the compressor, a process loop including a process chamber adapted to receive a process fluid therein, the process chamber being connected in circuit with the secondary loop so as to receive the working fluid from the compressor and transfer heat from the working fluid to the process fluid, a heat exchanger for heating the working fluid connected to the process loop for receiving heat therefrom and for transferring heat tomore » the secondary loop prior to the working fluid passing through the compressor, the secondary loop being operative to pass the working fluid from the process chamber to the turbine so as to effect driving relation thereof, a steam generator operatively associated with the secondary loop so as to receive the working fluid from the turbine, and a steam loop having a feedwater supply and connected in circuit with the steam generator so that feedwater passing through the steam loop is heated by the steam generator, the steam loop being connected in circuit with the process chamber and adapted to pass steam to the process chamber with the process fluid.« less

Inventors:
Publication Date:
OSTI Identifier:
5708192
Patent Number(s):
US 4576783
Assignee:
GA Tech., Inc., San Diego, CA NOV; NOV-85-012939; EDB-86-127067
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 9 Oct 1984
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; HEAT PUMPS; AUGMENTATION; HTGR TYPE REACTORS; PROCESS HEAT REACTORS; COMPRESSORS; COOLANTS; FEEDWATER; HEAT EXCHANGERS; HEAT TRANSFER; PRIMARY COOLANT CIRCUITS; PROCESS HEAT; REACTOR CORES; SECONDARY COOLANT CIRCUITS; STEAM GENERATORS; TEMPERATURE EFFECTS; TURBINES; WORKING FLUIDS; BOILERS; COOLING SYSTEMS; ENERGY; ENERGY SYSTEMS; ENERGY TRANSFER; FLUIDS; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; HEAT; HYDROGEN COMPOUNDS; MACHINERY; OXYGEN COMPOUNDS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; TURBOMACHINERY; VAPOR GENERATORS; WATER; 210900* - Nuclear Power Plants- Process Heat Reactors- (-1987); 210300 - Power Reactors, Nonbreeding, Graphite Moderated

Citation Formats

Koutz, S.L.. Heat pump augmentation of nuclear process heat. United States: N. p., 1986. Web.
Koutz, S.L.. Heat pump augmentation of nuclear process heat. United States.
Koutz, S.L.. Tue . "Heat pump augmentation of nuclear process heat". United States. doi:.
@article{osti_5708192,
title = {Heat pump augmentation of nuclear process heat},
author = {Koutz, S.L.},
abstractNote = {A system is described for increasing the temperature of a working fluid heated by a nuclear reactor. The system consists of: a high temperature gas cooled nuclear reactor having a core and a primary cooling loop through which a coolant is circulated so as to undergo an increase in temperature, a closed secondary loop having a working fluid therein, the cooling and secondary loops having cooperative association with an intermediate heat exchanger adapted to effect transfer of heat from the coolant to the working fluid as the working fluid passes through the intermediate heat exchanger, a heat pump connected in the secondary loop and including a turbine and a compressor through which the working fluid passes so that the working fluid undergoes an increase in temperature as it passes through the compressor, a process loop including a process chamber adapted to receive a process fluid therein, the process chamber being connected in circuit with the secondary loop so as to receive the working fluid from the compressor and transfer heat from the working fluid to the process fluid, a heat exchanger for heating the working fluid connected to the process loop for receiving heat therefrom and for transferring heat to the secondary loop prior to the working fluid passing through the compressor, the secondary loop being operative to pass the working fluid from the process chamber to the turbine so as to effect driving relation thereof, a steam generator operatively associated with the secondary loop so as to receive the working fluid from the turbine, and a steam loop having a feedwater supply and connected in circuit with the steam generator so that feedwater passing through the steam loop is heated by the steam generator, the steam loop being connected in circuit with the process chamber and adapted to pass steam to the process chamber with the process fluid.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 18 00:00:00 EST 1986},
month = {Tue Mar 18 00:00:00 EST 1986}
}
  • A heat pump is described whose working fluid, circulating through a closed loop comprising an evaporation zone, a compression zone, a condensation zone, and an expansion zone, consists of a nonazeotropic mixture of at least two separate fluids, said working fluid being in counter-current heat-exchange contact with a first external fluid used as heat source, and with a second external fluid used as heating fluid.
  • An apparatus and method are described for improving the efficiency of a heat pump for transferring heat and cold between two separate fluid streams , in which, during heating operation, the cooling medium is heated before decompression by the joule's heat released upon compression. According to a preferred embodiment, prior to this heating by joule's heat, the cooling medium is cooled by heat exchange with the fluid stream used for evaporation, which fluid stream is simultaneously heated.
  • Two or more open cycle vapor compression heat pumps of interdependently different capacities are placed in parallel arrangement intermediate to a heat sink and a heat source for the transfer of sensible heat therebetween.
  • A body of still water is confined in heat exchange with one or more ambient heat sources whose temperature is usually above but may drop near 0/sup 0/C. Heat is withdrawn from the body according to the heat-pump principle. If the temperature of the heat sources drops near zero the withdrawal of heat from the body results in the formation of ice in the body and the latent heat of fusion liberated during the ice formation is also withdrawn, so that the time periods during which the temperature of the ambient sources is near 0/sup 0/C can be bridged. Whenmore » the temperature of the ambient sources rises again their heat is used to re-melt the ice in the body of water.« less
  • Buildings are advantageously heated or heat-conditioned with a heat pump operated with a non-azeotropic mixture consisting essentially of two working fluids, with the mixture comprising a major component of monochlorodifluoromethane and a minor component of trifluoromethane.