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Speed of sound in the gaseous refrigerant R-409A

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Thermophysics and Aeromechanics Aims and scope

Abstract

Speed of sound in the gaseous refrigerant R-409A has been measured by ultrasonic interferometer in the temperature range from 293 to 373 K and at pressures from 0.05 to 0.58 MPa. The experimental uncertainties of the temperature, pressure, and speed of sound measurements were estimated to be within 20 mK, 4 kPa, and 0.1–0.2 %, respectively. On the basis of the obtained data, the isobaric molar heat capacity was calculated for the ideal-gas state. A comparison of the obtained results with the calculated speed of sound on the basis of REFPROP program was carried out.

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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

The work was financially supported by the Russian Foundation for Basic Research (Grant No. 11-08-00065).

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Komarov, S.G., Stankus, S.V. Speed of sound in the gaseous refrigerant R-409A. Thermophys. Aeromech. 20, 125–127 (2013). https://doi.org/10.1134/S0869864313010137

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  • DOI: https://doi.org/10.1134/S0869864313010137

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