Vapor liquid equilibrium (VLE) data of working fluids play a vital role in the research and development of absorption refrigeration technology. In this paper, the VLE data of two new working fluids, 1,1-difluoroethane (R152a) + N,N-dimethylformamide (DMF) and R152a + N,N-dimethylacetamide (DMAC), were measured by the static analytical method at temperatures from (293.15 to 353.15) K. The experimental results show that R152a exhibits better solubility characteristics with DMF and DMAC, and the solubility of R152a in DMAC is slightly better than that in DMF. All experimental data were correlated by the activity coefficient model of five-parameter nonrandom two liquid (NRTL). The calculated results are in essential agreement with the experimental data, and the maximum relative deviation of pressure are 3.69 % and 3.51 %, the average relative deviation of pressure are 1.60 % and 1.11 %, for binary systems R152a + DMF and R152a + DMAC, respectively.
Compounds
#
Formula
Name
1
C2H4F2
1,1-difluoroethane
2
C3H7NO
dimethylformamide
3
C4H9NO
N,N-dimethylethanamide
4
CO2
carbon dioxide
5
C2H6O
ethanol
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.