Mixtures of difluoromethane (HFC-32) and 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) are promising alternative refrigerants; however, there is currently no available published experimental PVTx data. The gaseous PVTx properties of HFC-32 (1) + HFC-227ea (2) mixtures were measured using the Burnett-isochoric method with 251 data sets obtained for temperatures from (310 to 410) K, pressures up to 3658 kPa, and densities up to 206 kg*m-3 at x1 = 0.2648, x1 = 0.5155, and x1 = 0.7809. The temperature, pressure, and mole fraction uncertainties were estimated to be +-10 mK, +-100 Pa, and +-0.01 %, respectively. A truncated virial equation was used to correlate the experimental data, with the second and third virial coefficients for the binary mixtures also determined.
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.