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Performance of R-438A in R-22 refrigeration and air conditioning systems.

Number: pap. n. R18, 2325

Author(s) : ALLGOOD C. C., LAWSON C. C.

Summary

With the accelerated phase out of R-22 underway, equipment owners and service contractors must develop a plan for operating, retrofitting, or replacing their existing R-22 refrigeration and air conditioning systems. In many cases, retrofitting the existing R-22 equipment to an alternative refrigerant is a viable, cost effective option for the equipment owner. R-438A is a non-ozone-depleting hydrofluorocarbon (HFC) refrigerant blend which can be used to retrofit existing hydrochlorofluorocarbon (HCFC) refrigerant R-22 refrigeration and air conditioning systems with direct expansion evaporators and positive displacement compressors. In most systems, the existing mineral oil (MO) or alkylbenzene (AB) lubricant can be used, reducing the cost and time required for the retrofit by eliminating the need to change to a polyolester (POE) lubricant. This paper will review the performance characteristics and oil return properties of R-438A from both laboratory tests and actual R-22 system retrofits. Topics to be covered in this presentation include refrigerant physical and environmental properties, material compatibility information, oil return properties, and capacity, energy efficiency, and operating data from both compressor calorimeter tests and actual R-22 refrigeration and air conditioning system retrofits.

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Format PDF

Pages: 8 p.

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Details

  • Original title: Performance of R-438A in R-22 refrigeration and air conditioning systems.
  • Record ID : 30000784
  • Languages: English
  • Subject: HFCs alternatives
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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