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P?T? property measurements of binary HFO-1234ze(E) + HFC-32 refrigerant mixtures.

[In Japanese. / En japonais.]

Author(s) : KOBAYASHI K., TANAKA K., HIGASHI Y.

Type of article: Article

Summary

An experiment apparatus for measuring P?T? (pressure-density-temperature-composition) properties along isochores was constructed. After the calibration of pressure sensor and the determination of the inner volume of sample vessel, the reproducibility of the experimental apparatus was confirmed by the measurement of isochores for pure HFC-134a (1,11,2-tetrafluoethane). The P?T? properties of the 50 mass% HFO-1234ze (trans-1,2,3,3-tetrafluoropropene) + 50 mass% HFC-32 (difluoromethane) mixtures and those of the 75 mass% HFO-1234ze(E) + 25 mass% HFC-32 mixtures were measured for five isochores including 128 P?T? property data points and for seven isochores including 188 P?T? property data points, respectively. The critical pressures were determined from the present isochores close to the critical density against the critical temperature. The relationship between pressure and temperature at vapour-liquid equilibrium was graphically determined from the present isochores.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 30003431
  • Languages: Japanese
  • Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 28 - n. 4
  • Publication date: 2011

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