Thermodynamic property model for the mixtures of difluoromethane (HFC-32) + isobutane and difluoromethane + trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)).

Number: pap. n. R12, 2439

Author(s) : AKASAKA R.

Summary

The vapor-liquid equilibrium (VLE) have been successfully modeled for the binary mixtures of difluoromethane (HFC-32) + isobutane and difluoromethane + trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) according to the multi-fluid approach. The mixtures studied in this work are considered as possible replacements for existing hydrofluorocarbon (HFC) refrigerants having far from negligible global warming potential (GWP). The independent variables of the model are the temperature, density, and composition. Reliable published pure-fluid equations of state are incorporated for pure HFC-32, isobutane and HFO-1234ze(E). Although the model is optimized only using experimental VLE data, it can be used to calculate other thermodynamic properties such as density and heat capacities. Therefore, the model is helpful for design and simulation of refrigeration systems using the mixtures as working fluid.

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Pages: 6 p.

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Details

  • Original title: Thermodynamic property model for the mixtures of difluoromethane (HFC-32) + isobutane and difluoromethane + trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)).
  • Record ID : 30000758
  • Languages: English
  • Source: 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2010/07/12

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