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Modeling the surface tension of refrigerant mixtures with linear gradient theory / Shahin Khosharay in International journal of refrigeration, Vol. 36 N° 8 (Décembre 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 8 (Décembre 2013) . - pp. 2223–2232 Titre : Modeling the surface tension of refrigerant mixtures with linear gradient theory Titre original : Modélisation de la tension superficielle des mélanges de frigorigènes à l'aide de la théorie du gradient linéaire Type de document : texte imprimé Auteurs : Shahin Khosharay, Auteur ; Masoumeh Seyfi Mazraeno, Auteur ; Farshad Varaminian, Auteur Année de publication : 2014 Article en page(s) : pp. 2223–2232 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Surface  tension;  Heyen  equation  of  state;  linear  gradient  theory;  refrigerants Résumé : In this work, the surface tensions of pure refrigerants and binary, ternary, and quaternary refrigerant mixtures were modeled. A simple and reliable model was used, combining the linear gradient theory (LGT) with the Heyen equation of state (Heyen EOS), to take advantage of the well described equilibrium densities of phases and surface tensions of refrigerant mixtures. The binary interaction parameters of the Heyen EOS were determined to improve the description of the equilibrium properties of bulk phases. A new correlation for the influence parameter is also proposed that is a function of the densities of the bulk phases. The geometric mixing rule for the mixture influence parameter is also selected without adjustable coefficients, making this model predictive. The surface tensions predicted by the model agree well with experimental data for pure refrigerants and binary, ternary, and quaternary refrigerant mixtures (overall AAD∼3.27%). En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001035 [article] Modeling the surface tension of refrigerant mixtures with linear gradient theory = Modélisation de la tension superficielle des mélanges de frigorigènes à l'aide de la théorie du gradient linéaire [texte imprimé] / Shahin Khosharay, Auteur ; Masoumeh Seyfi Mazraeno, Auteur ; Farshad Varaminian, Auteur . - 2014 . - pp. 2223–2232. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 8 (Décembre 2013) . - pp. 2223–2232 Mots-clés : Surface  tension;  Heyen  equation  of  state;  linear  gradient  theory;  refrigerants Résumé : In this work, the surface tensions of pure refrigerants and binary, ternary, and quaternary refrigerant mixtures were modeled. A simple and reliable model was used, combining the linear gradient theory (LGT) with the Heyen equation of state (Heyen EOS), to take advantage of the well described equilibrium densities of phases and surface tensions of refrigerant mixtures. The binary interaction parameters of the Heyen EOS were determined to improve the description of the equilibrium properties of bulk phases. A new correlation for the influence parameter is also proposed that is a function of the densities of the bulk phases. The geometric mixing rule for the mixture influence parameter is also selected without adjustable coefficients, making this model predictive. The surface tensions predicted by the model agree well with experimental data for pure refrigerants and binary, ternary, and quaternary refrigerant mixtures (overall AAD∼3.27%). En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713001035