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R134a qualification: industry refrigerator capillary data.

Author(s) : DEVOS R.

Summary

With the phase-out of R12, the use of R134a and polyolester oil became the preferred refrigerant/oil combination for the refrigerator appliance industry. Reliability data for this refrigerant/oil combination were minimal, and initial testing showed a propensity for the capillary tubes to clog with a variety of contaminants. The paper presents the relationship between capillary tube restriction due to the contaminants and performances. Analysis of the contaminants included a visual description, infrared spectroscopy, scanning electron microscope examination, and measurements of total chlorine content and noncondensable gas content of the refrigerant. Oil samples were measured for moisture level, dissolved iron, and total acid, and an infrared spectral analysis was performed.

Details

  • Original title: R134a qualification: industry refrigerator capillary data.
  • Record ID : 1999-0161
  • Languages: English
  • Source: ASHRAE Transactions.1997 Annual Meeting, Boston, MA.
  • Publication date: 1997
  • Document available for consultation in the library of the IIR headquarters only.

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