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


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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.

作者简介

S. Komarov

Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences

Email: stankus@itp.nsc.ru
俄罗斯联邦, Novosibirsk, 630090

S. Stankus

Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences

编辑信件的主要联系方式.
Email: stankus@itp.nsc.ru
俄罗斯联邦, Novosibirsk, 630090

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