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Method of introducing an in situant into a vapor compression system, especially useful for leak detection, as well as an apparatus for leak detection and a composition useful for leak detection

  • US 6,327,897 B1
  • Filed: 06/11/1998
  • Issued: 12/11/2001
  • Est. Priority Date: 01/24/1997
  • Status: Expired due to Term
First Claim
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1. A method of introducing at least one in situant into an oil or lubricant of a vapor compression system for the purpose of detecting leaks in the vapor compression system components, comprising the steps of:

  • dissolving the at least one in situant in a carrier fluid of pure polyol ester oil or a polyol ester oil and alcohol solution, delivering the at least one in situant and the carrier fluid into a vapor compression system fluid, leaving the at least one in situant dissolved in the combined carrier/system fluid solution, and removing any immiscible or slightly miscible components of the carrier fluid from the system fluid, thereby leaving the miscible carrier fluid components and at least one in situant dissolved in the system fluid, wherein the at least one in situant is an oil or lubricant additive selected from the group consisting of anti-oxidation, anti-wear, anti-friction, dispersion improvement, viscosity index improvement additives.

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