Yang Tao, Hu Xiaozhen, Meng Xianyang, et al. Measurement of Vapor Liquid Equilibrium for Difluoromethane (R32) +Fluoroethane (R161) + 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf)[J]. Journal of refrigeration, 2018, 39(6).
Yang Tao, Hu Xiaozhen, Meng Xianyang, et al. Measurement of Vapor Liquid Equilibrium for Difluoromethane (R32) +Fluoroethane (R161) + 2,3,3,3-Tetrafluoroprop-1-ene (R1234yf)[J]. Journal of refrigeration, 2018, 39(6). DOI: 10.3969/j.issn.0253-4339.2018.06.017.
we focused on the vapor-liquid equilibrium property of the ternary system of R32+R161+R1234yf. The vapor–liquid equilibrium data was measured via a liquid-circulation apparatus at temperatures from 283.15 K to 323.15 K. The standard uncertainties of temperature
pressure
and mole fractions were 10 mK
0.5 kPa
and 0.005
respectively. The Peng–Robinson–Stryjek–Vera (PRSV) equation of state (EOS) combined with the Wong–Sandler (WS) mixing rule and non-random two-liquid (NRTL) activity coefficient model were employed to predict the ternary vapor–liquid equilibrium properties by using the parameters of the binary mixture (i.e.
R32+R161
R32+R1234yf
and R161+R1234yf). The average absolute deviation of pressure AADp (average absolute deviation) is 0.34%. Additionally
the average absolute deviation of vapor phase mole fractions for R32 (AADy1) and R161 (AADy2) are 0.002 and 0.001
respectively
and thus the predicted values for the ternary system exhibit good agreement with the experimental results.