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Integrated air cycle-gas turbine engine

  • US 5,323,603 A
  • Filed: 03/09/1993
  • Issued: 06/28/1994
  • Est. Priority Date: 11/09/1990
  • Status: Expired due to Fees
First Claim
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1. An integrated air cycle-gas turbine engine comprising:

  • a) air entry means for receiving air at atmospheric conditions;

    b) a first turbine downstream of said air entry means for expanding and cooling said air;

    c) an air-to-water heat exchanger downstream of said first turbine, said air-to-water heat exchanger includingi) air inlet means for admitting cooled expanded air from said first turbine;

    ii) air outlet means for expelling said expanded air;

    iii) water inlet means for admitting warm water;

    iv) water outlet means for discharging said water; and

    v) separator means for separating said expanded air from said water and conducting heat therebetween;

    d) an air-to-air heat exchanger downstream of said air-to-water heat exchanger, said air-to-air heat exchanger includingi) first inlet means for receiving expanded air from said air outlet means of said air-to-water heat exchanger;

    ii) first outlet means for discharging said expanded air;

    iii) second inlet means communicating with said air entry means for receiving atmospheric air;

    iv) second outlet means for discharging said atmospheric air into said first turbine; and

    v) separator means for separating said expanded air from said atmospheric air and conducting heat therebetween;

    e) a combustion chamber having means supplying fuel thereto;

    f) a first compressor, driven by said first turbine, for supplying compressed air to said combustion chamber;

    g) a second compressor, downstream of said air-to-air heat exchanger and upstream of said first compressor, for receiving expanded air from said first outlet means and pre-compressing said air prior to entry into said first compressor;

    h) a second turbine, downstream of said combustion chamber, for extracting energy produced in said combustion chamber and driving said second compressor; and

    i) a recuperator includingi) first inlet means for admitting compressed air from said first compressor;

    ii) first outlet means for expelling said compressed air;

    iii) second inlet means for admitting high temperature exhaust from said second turbine;

    iv) second outlet means for expelling said exhaust; and

    v) separator means for separating said compressed air from said turbine exhaust and for conducting heat therebetween.

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