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The speed of sound in vapor phase refrigerant R-134a (57.24 wt.%)−R-227ea (42.76 wt.%)

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Abstract

The speed of sound of the gaseous mixed refrigerant R-134a (57.24 wt.%) - R-227ea (42.76 wt. %) was investigated by the method of ultrasonic interferometer in the temperature range from 293 to 373 K and at pressures from 0.08 to 0.97 MPa. The measurement errors of temperature, pressure, and speed of sound were ±20 mK, ±4 kPa, and ±(0.20-0.35) %, respectively. Approximation dependences of the speed of sound on five isotherms have been obtained, and the experimental data have been compared with calculations using the REFPROP program.

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References

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics SB RAS, 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.

Additional information

This work was carried out under state contract with IT SB RAS (AAAA-A17-117022850029-9)

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Komarov, S.G., Stankus, S.V. The speed of sound in vapor phase refrigerant R-134a (57.24 wt.%)−R-227ea (42.76 wt.%). Thermophys. Aeromech. 26, 619–621 (2019). https://doi.org/10.1134/S0869864319040139

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  • DOI: https://doi.org/10.1134/S0869864319040139

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