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Implementation of PC-SAFT and SAFT + Cubic for modeling thermodynamic properties of haloalkanes. II. 7 Haloethanes and their mixtures / Ilya Polishuk in International journal of refrigeration, Vol. 36 N° 3 (Mai 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 980–991 Titre : Implementation of PC-SAFT and SAFT + Cubic for modeling thermodynamic properties of haloalkanes. II. 7 Haloethanes and their mixtures Titre original : Mise en œuvre d'équations PC-SAFT et SAFT + Cubic pour la modélisation des propriétés thermodynamiques des haloalcanes. II. 7 haloalcanes et leurs mélanges Type de document : texte imprimé Auteurs : Ilya Polishuk, Auteur ; Erez Assor, Auteur ; Naor Cohen, Auteur Année de publication : 2013 Article en page(s) : pp. 980–991 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Fluid;  Theory;  Statistics;  Refrigerants;  Density;  Sound  velocity;  Heat  capacity;  Phase  equilibria Résumé : This study compares PC-SAFT and SAFT + Cubic in predicting various thermodynamic properties of 7 haloethanes. The correct estimation of the pure compound critical points contributes to a superior over-all robustness and reliability of SAFT + Cubic. However SAFT + Cubic is less accurate in modeling vapor pressures and isobaric heat capacities away from the critical points. Nevertheless, while being imprecise in predicting CP and CV separately, SAFT + Cubic establishes a more successful mutual error cancellation of these properties, both for ratio and for arithmetic average. Hence, the inaccurate estimations of heat capacities have relatively small impact on predictions of sound velocities. Considering the fact that the heat capacities in engineering equipment are somewhere between constant-volume and constant-pressure conditions, SAFT + Cubic might in fact yield reasonable estimations of the actual data. However its strongest points in comparison to PC-SAFT are the predictions of sound velocities and phase equilibria. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002940 [article] Implementation of PC-SAFT and SAFT + Cubic for modeling thermodynamic properties of haloalkanes. II. 7 Haloethanes and their mixtures = Mise en œuvre d'équations PC-SAFT et SAFT + Cubic pour la modélisation des propriétés thermodynamiques des haloalcanes. II. 7 haloalcanes et leurs mélanges [texte imprimé] / Ilya Polishuk, Auteur ; Erez Assor, Auteur ; Naor Cohen, Auteur . - 2013 . - pp. 980–991. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 3 (Mai 2013) . - pp. 980–991 Mots-clés : Fluid;  Theory;  Statistics;  Refrigerants;  Density;  Sound  velocity;  Heat  capacity;  Phase  equilibria Résumé : This study compares PC-SAFT and SAFT + Cubic in predicting various thermodynamic properties of 7 haloethanes. The correct estimation of the pure compound critical points contributes to a superior over-all robustness and reliability of SAFT + Cubic. However SAFT + Cubic is less accurate in modeling vapor pressures and isobaric heat capacities away from the critical points. Nevertheless, while being imprecise in predicting CP and CV separately, SAFT + Cubic establishes a more successful mutual error cancellation of these properties, both for ratio and for arithmetic average. Hence, the inaccurate estimations of heat capacities have relatively small impact on predictions of sound velocities. Considering the fact that the heat capacities in engineering equipment are somewhere between constant-volume and constant-pressure conditions, SAFT + Cubic might in fact yield reasonable estimations of the actual data. However its strongest points in comparison to PC-SAFT are the predictions of sound velocities and phase equilibria. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002940