The measurements of PvTx properties of HFO-1234yf/HFC-32 binary mixture in the vapor phase were carried out by single-sinker magnetic suspension densimeter in the range of temperatures from 279.8 to 347.9 K, pressures from 0.10 to 2.66 MPa, densities from 2.30 to 66.02 kgm-3, and mole fractions of HFO- 1234yf from 0.062 to 0.610. The experimental expanded uncertainty (k = 2) in temperature, pressure, and mole fraction are estimated to be 12 mK, 1.4 kPa, and 0.0002, respectively. The relative expanded uncertainty (k = 2) in density is 0.029 - 0.104%. On the basis of the experimental PvTx properties data, a truncated virial equation of state was developed for the binary HFO-1234yf/HFC-32 system. It reproduces the experimental values with average absolute deviations of 0.10% and 0.11% for pressure and density, respectively.
Compounds
#
Formula
Name
1
C3H2F4
2,3,3,3-tetrafluoro-1-propene
2
CH2F2
difluoromethane
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.
Type
Compound-#
Property
Variable
Constraint
Phase
Method
#Points
POMD
1
2
Mass density, kg/m3 ; Gas
Temperature, K; Gas
Pressure, kPa; Gas
Mole fraction - 1; Gas
Gas
Buoyancy - hydrostatic balance with magnetic suspension - one sinker