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Performance tests of R22 and R32-R125-R134a mixture for baseline air conditioning and liquid over-feeding operations.

Author(s) : MEI V. C., CHEN F. C., CHEN D. T., HUANG-FU E. P.

Summary

Much experimental and theoretical analysis of potential R22 replacements has been accomplished. However, published information at realistic operating conditions is still rare. This type of work could be useful because it would provide baseline data for comparing the performance of R22 and its potential replacement at drop-in-conditions. An off-the-shelf window air conditioner was tested at Air Conditioning and Refrigeration Institute (ARI)-rated indoor conditions and at different ambient temperatures, including the ARI-rated outdoor condition, with R22 and with its potential replacement, a ternary mixture of R32 (30%)-R125 (10%)-R134a (60%). The test results indicated that the cooling capacity of the ternary mixture was 7.7% less than that of R22 at 35 deg C ambient for baseline operation. The cooling capacity for both refrigerants improved when a flooded evaporator, or liquid overfeeding (LOF) was used. For liquid overfeeding operation, the cooling capacity of the ternary mixture was only 1.1% less than that of R22.

Details

  • Original title: Performance tests of R22 and R32-R125-R134a mixture for baseline air conditioning and liquid over-feeding operations.
  • Record ID : 1997-0696
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1995/06/24
  • Document available for consultation in the library of the IIR headquarters only.

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