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Leak detection with thermal imaging

  • US 6,866,089 B2
  • Filed: 07/02/2002
  • Issued: 03/15/2005
  • Est. Priority Date: 07/02/2002
  • Status: Expired due to Fees
First Claim
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1. A method of leak testing a heat exchanger of the type designed for the flow of refrigerant vapor therethrough, comprising the steps of:

  • pressurizing the heat exchanger with a vapor, effecting a transfer of heat so as to cause a temperature gradient between the heat exchanger and the pressurized vapor therein;

    viewing the heat exchanger with an infrared camera and generating signals representative of the temperatures of both the heat exchanger and any vapor that is leaking therefrom; and

    applying said representative signals to an imaging system to create images that indicate the presence or absence of any vapor leakages from the heat exchanger.

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