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Deep heat recovery gas turbine engine

  • US 10,364,744 B2
  • Filed: 03/13/2017
  • Issued: 07/30/2019
  • Est. Priority Date: 06/08/2016
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a flow of a working fluid at a first heat exchanger of a gas turbine engine, the working fluid being a supercritical fluid;

    transferring, in the first heat exchanger, heat from the flow of the working fluid to a compressed air flow received from an air compressor of the gas turbine engine to reduce a temperature of the flow of the working fluid below a first threshold, the air compressor being fluidly coupled with a combustor of the gas turbine engine;

    receiving the flow of the working fluid from the first heat exchanger at a second heat exchanger of the gas turbine engine, the second heat exchanger being coupled in series with the first heat exchanger, the second heat exchanger transferring heat out of the flow of the working fluid to an ambient air flow to reduce the temperature of the flow of the working fluid from below the first threshold to below a second threshold;

    receiving the flow of the working fluid from the second heat exchanger at a fluid compressor and compressing the flow of the working fluid with the fluid compressor to increase the temperature of the flow of the working fluid from below the second threshold to above the second threshold; and

    receiving the compressed flow of the working fluid from the fluid compressor at a third heat exchanger, the third heat exchanger transferring heat from an exhaust output gas produced by the combustor to the compressed flow of the working fluid.

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