Surface Tension Measurements of Difluoromethane(R-32) and the Binary Mixture Difluoromethane(R-32) + 1,1,1,2-tetrafluoroethane(R-134a) from (253 to 333) K
The surface tensions of binary mixtures of difluoromethane (R-32) + 1,1,1,2-tetrafluoroethane (R-134a) and pure difluoromethane (R-32) were measured over the temperature range (253 to 333) K using a differential capillary rise method (DCRM) under vapor-liquid equilibrium conditions. The temperature and surface tension uncertainties were estimated to be within 110 mK and 10.15 mN7m-1, respectively. The present data were used to develop a van der Waals-type surface tension correlation for pure R-32. Correlations for pure R-32 and R-134a were used to develop a surface tension correlation for the experimental data of the R-32 + R-134a mixtures as a function of the mass fraction.
Compounds
#
Formula
Name
1
CH2F2
difluoromethane
2
C2H2F4
1,1,1,2-tetrafluoroethane
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.