Share

IIR document

Measurements of saturation densities in the critical region and critical locus for the binary R32/R143a system.

Author(s) : MIZUKAWA M., WATANABE K.

Summary

One of the most promising alternatives to substitute R502 is the ternary R32/R125/R143a refrigerant system. In order to elucidate the thermodynamic properties of this ternary system, it becomes very important to reveal the thermodynamic properties of the binary R32/R143a system, since those for two other binary systems, R32/R125 and R125/R143a, have already been studied to a certain extent by earlier measurements including those by the authors' contributions. The saturated vapour and liquid densities in the critical region of this mixture have been measured based on a visual observation of the meniscus disappearance in an optical cell. For the R32/R143a system, 42 saturation densities have been measured at four compositions, 20, 50, 60 and 90 mass% R32. The critical temperatures and densities for this binary refrigerant have been determined by taking into consideration the meniscus disappearing level as well as the intensity of the critical opalescence.

Available documents

Format PDF

Available

  • Public price

    20 €

  • Member price*

    Free

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).

Details

  • Original title: Measurements of saturation densities in the critical region and critical locus for the binary R32/R143a system.
  • Record ID : 2001-1223
  • Languages: English
  • Source: 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Publication date: 1999/09/19

Links


See other articles from the proceedings (447)
See the conference proceedings

Indexing