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Transport properties of 1,1,1,2-tetrafluoroethane (R134a).

Author(s) : KRAUSS R., LUETTMER-STRATHMANN J., SENGERS J. V., STEPHAN K.

Type of article: Article

Summary

New equations for the thermal conductivity and the viscosity of R134a that are valid in a wide range of pressures and temperatures are presented. They were obtained through a theoretically based, critical evaluation of the available experimental data, which showed considerable inconsistencies between data sets, in particular in the vapour phase. In the critical region the observed enhancement in the thermal conductivity is well represented by a crossover model for the transport properties of fluids. Since thermodynamic properties enter into the calculation of the critical enhancement of the transport properties, a new fundamental equation for the critical region was developed also.

Details

  • Original title: Transport properties of 1,1,1,2-tetrafluoroethane (R134a).
  • Record ID : 1994-1473
  • Languages: English
  • Source: Int. J. Thermophys. - vol. 14 - n. 4
  • Publication date: 1993/07
  • Document available for consultation in the library of the IIR headquarters only.

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