The present study concerns p T x phase equilibria measurements involving two working fluid pairs (refrigerant + organic solvent), namely, 1,1,1,2-tetrafluoroethane (R134a) + N,N-dimethylacetamide (DMA) and, 1,1,1,2-tetrafluoroethane + N-methyl-2-pyrrolidone (NMP), using the static analytic method at temperatures varying between 303 and 353 K. The experimentally measured data were successfully correlated using the Peng Robinson equation of state (PR-EoS) in combination with Huron Vidal mixing rule, and the nonrandom two-liquid activity coefficient model (NRTL), contrarily to the predictive Soave Redlich Kwong (PSRK) group contribution equation of state which failed to reproduce accurately enough such data.
Compounds
#
Formula
Name
1
C2H2F4
1,1,1,2-tetrafluoroethane
2
C4H9NO
N,N-dimethylethanamide
3
C5H9NO
N-methylpyrrolidone
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.