The surface tension of difluoromethane (R-32) (1) + 1,1,1,2,3,3,3-heptafluoropropane (R-227ea) (2) binary mixtures was measured at five nominal mass fractions of w1 = 0.3083, 0.3639, 0.4064, 0.5519, and 0.7345 over the temperature range from (253 to 333) K using the differential capillary rise method (DCRM) under vapor-liquid equilibrium conditions. The temperature and surface tension uncertainties were estimated to be within (10 mK and (0.15 mN.m-1, respectively. A new correlation based on the mass fraction was developed to represent the surface tension in the R-32 + R-227ea system.
Compounds
#
Formula
Name
1
CH2F2
difluoromethane
2
C3HF7
1,1,1,2,3,3,3-heptafluoropropane
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.