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Method and apparatus for determining supercritical pressure in a heat exchanger

  • US 20050066675A1
  • Filed: 07/29/2004
  • Published: 03/31/2005
  • Est. Priority Date: 09/25/2003
  • Status: Active Grant
First Claim
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1. A method of determining the supercritical pressure of a refrigerant in a heat exchanger in a transcritical vapor compression system, said method comprising:

  • obtaining a plurality of measurements representative of the temperature of the refrigerant at spaced locations on the heat exchanger;

    identifying a first location based upon said plurality of measurements wherein said first location is the approximate location of the minimum temperature gradient of the refrigerant within the heat exchanger; and

    determining the pressure of the refrigerant within the heat exchanger based upon the identification of said first location.

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