The solubility of the refrigerant in the solvent has an important effect on the efficiency of absorption refrigeration. In this paper, the solubility of 1,1,1,2-tetrafluoroethane (HFC-134a) in N,N-dimethyl formamide (DMF) was measured from T = (263.15 to 363.15) K. Throughout the observation of overall experiment, there was no stratification and no sediment generated, and the color of liquid had no change in the equilibrium cell before and after the experiment. The above-mentioned content suggested that any ratio of HFC-134a and DMF could be miscible. The experimental data were correlated by the activity coefficient model NRTL model. The results show a good agreement with the experimental data. The overall average relative deviation of the pressure is 1.9 %, and the maximum relative deviation of the pressure is 5.2 %. Meanwhile, the results reveal that DMF shows very high affinity with HFC-134a because the mole fraction of HFC-134a in DMF at a specific temperature and pressure is higher (negative deviation) than that predicted for an ideal solution obeying Raoult s law.
Compounds
#
Formula
Name
1
C2H2F4
1,1,1,2-tetrafluoroethane
2
C3H7NO
dimethylformamide
3
CHClF2
chlorodifluoromethane
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.