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Bubble Point Measurements of Mixtures of HFO and HFC Refrigerants



Stephanie L. Outcalt, Aaron Rowane


Bubble point pressures of six binary mixtures at two compositions each have been measured utilizing a static method. The performance of the apparatus was characterized from bubble point measurements of R32 + R125 for which 19 literature studies are available for comparison. The mixtures studied were as follow: R1234yf + R134a, R134a + R1234ze (E), R1234yf + R1234ze (E), R125 + R1234yf, R1234ze (E) + R227ea and R1234yf + R152a. For each mixture measurements were conducted from 270 K to 360 K or to within approximately 10 K of the critical temperature of the pure component with the lower critical temperature. A total of 196 bubble point pressures are reported with combined expanded uncertainties (k = 2) ranging from 0.1% – 0.6%. The measured data are graphically compared to available literature data.
Journal of Chemical and Engineering Data


Bubble point pressure, Refrigerants, Vapor-liquid equilibrium


Outcalt, S. and Rowane, A. (2021), Bubble Point Measurements of Mixtures of HFO and HFC Refrigerants, Journal of Chemical and Engineering Data, [online],, (Accessed June 16, 2024)


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Created November 1, 2021, Updated January 23, 2023