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Modelling and testing of fractionation effects with refrigerant blends in an actual residential heat pump system.

Author(s) : BIANCARDI F. R., PANDY D. R., SIENEL T. H., MICHELS H. H.

Summary

The heating, ventilating, and air-conditioning industry is actively evaluating and testing hydrofluorocarbon (HFC) refrigerant blends. While analyses and system performance tools have shown that HFC refrigerant blends offer certain performance, capacity and operational advantages, there are significant possible service and operational issues that are raised by the use of blends. Many of these issues occur due to the fractionation of the blends. Therefore, the objective of the program was to conduct analyses and experimental tests aimed at understanding these issues, develop approaches or techniques to predict these effects, and convey to the industry safe and reliable approaches. Model predictions and experimental results are presented for HFC refrigerant blends containing R32, R134a, and R125 and the data are generalized for various operating conditions and scenarios.

Details

  • Original title: Modelling and testing of fractionation effects with refrigerant blends in an actual residential heat pump system.
  • Record ID : 1998-1529
  • Languages: English
  • Source: ASHRAE Transactions.
  • Publication date: 1997
  • Document available for consultation in the library of the IIR headquarters only.

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