Open AccessSound velocity in the vapor phase of the binary mixture R-125 (63.9 wt.%) – R-134a (36.1 wt.%)
Author(s) -
S. G. Komarov,
С. В. Станкус
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1677/1/012166
Subject(s) - speed of sound , binary number , materials science , analytical chemistry (journal) , phase (matter) , vapor phase , sound (geography) , interferometry , vapor pressure , interval (graph theory) , thermodynamics , chemistry , acoustics , physics , optics , mathematics , chromatography , arithmetic , organic chemistry , combinatorics
Using an ultrasonic interferometer method, the sound velocity in gaseous mixture R-125 (63.9 wt. %) - R-134a (36.1 wt. %) was investigated in the temperature interval 303-393 K and pressure up to 0.95 MPa. The temperature measurement error was 20 mK, pressure 4 kPa, and sound velocity (0.2–0.3) %. It was shown that the sound velocity values increase with temperature and decrease with pressure. Comparison of our data with the calculations using the REFPROP software was performed.