p-T-x Measurements for Some Working Fluids for an Absorption Heat Transformer: 1,1,1,2-Tetrafluoroethane (R134a) + Dimethylether Diethylene Glycol (DMEDEG) and Dimethylether Triethylene Glycol (DMETrEG)

Raouf Zehioua (1, 2) , Christophe Coquelet (3) , Abdeslam-Hassen Meniai (4) , Dominique Richon (3)

1 CEP - Centre Énergétique et Procédés
2 LIPE - Laboratoire de l'Ingénierie des Procédés de l'Environnement
3 CEP/Fontainebleau
4 Département de Chimie Industrielle

The solubilities of 1,1,1,2-tetrafluoroethane (R134a), CF3CH2F, + dimethylether diethylene glycol (DMEDEG), CH3O(CH2CH2O)2CH3, and R134a + dimethylether triethylene glycol (DMETrEG) binary systems were measured, using the “static-analytic” method at temperatures between (303 and 353) K. This work was an opportunity to test the use of R134a as a refrigerant in combination with an organic absorbent, like DMEDEG and DMETrEG, in an absorption heat transformer (AHT), also known as a type II absorption heat pump or a reversed absorption heat pump. The experimental data were correlated using the Peng-Robinson equation of state (PR-EoS) in combination with Mathias-Copeman R function, Huron-Vidal mixing rules, and the nonrandom two-liquid (NRTL) activity coefficient model. The experimental results were compared to the predicted values obtained using the predictive Soave-Redlich-Kwong group contribution equation of state (PSRK-EoS).

Domaines: Génie des procédés

Raouf Zehioua, Christophe Coquelet, Abdeslam-Hassen Meniai, Dominique Richon. p-T-x Measurements for Some Working Fluids for an Absorption Heat Transformer: 1,1,1,2-Tetrafluoroethane (R134a) + Dimethylether Diethylene Glycol (DMEDEG) and Dimethylether Triethylene Glycol (DMETrEG). Journal of Chemical and Engineering Data, 2010, 55, pp.2769-2775. ⟨10.1021/je9009915⟩. ⟨hal-00573800⟩