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Vapor Pressure, Speed of Sound, and Density of the Refrigerant Mixture R-134a–R227ea in Vapor Phase

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Abstract

The vapor pressure on the bubble line, the speed of sound, and the density of the R-134a (48.66%)–R-227ea (51.34%) refrigerant gaseous mixture were studied with an ultrasound interferometer and constant volume piezometer within the temperature range of 293–373 K at pressures of 0.06 to 0.4–3.6 MPa. The temperature, pressure, speed of sound, and density measurement errors were ±20 mK, ±4 kPa, ±(0.1–0.3)%, and ±(0.2–0.4)%, respectively. The approximation dependencies of the vapor density and its pressure on the bubble line were obtained, and the experimental data are compared to calculations with the REFPROP software.

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

    S. G. Komarov & S. V. Stankus

Authors
  1. S. G. Komarov
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  2. S. V. Stankus
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Correspondence to S. V. Stankus.

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Translated by I. Dikhter

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Komarov, S.G., Stankus, S.V. Vapor Pressure, Speed of Sound, and Density of the Refrigerant Mixture R-134a–R227ea in Vapor Phase. High Temp 57, 596–599 (2019). https://doi.org/10.1134/S0018151X19040126

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  • DOI: https://doi.org/10.1134/S0018151X19040126

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