The pvTx properties of binary mixture of difluoromethane (R32) and 2,3,3,3-tetrafluoroprop-1-ene (R1234yf) in the vapor phase were measured at temperatures from (298 to 383) K and at pressures from (475 to 5686) kPa covering the mole fractions of xR32 = (0.119, 0.259, 0.449, 0.698, 0.874) by using a Burnett apparatus. The combined expanded uncertainties of temperatures, pressures, mole fraction and density are estimated to be 24 mK, 1.6 kPa, 0.01 and within 0.2% (k = 2) over the entire temperature and pressure ranges, respectively. Based on the experimental data of this work, a virial equation of state was developed with the absolute average deviation of compressibility factor lower than 0.19% for each composition and this equation shows physically reasonable behaviour of the second and third virial coefficients. Furthermore, the relative deviations of the experimental data from the multi-parameter equation of state of REFPROP 10.0 are less than 0.6% for the mixtures.
Compounds
#
Formula
Name
1
CH2F2
difluoromethane
2
C3H2F4
2,3,3,3-tetrafluoro-1-propene
3
He
helium
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.