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An accurate generalized model for predict vapor pressure of refrigerants / Ehsan Sanjari in International journal of refrigeration, Vol. 36 N° 4 (Juin 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 4 (Juin 2013) . - pp. 1327–1332 Titre : An accurate generalized model for predict vapor pressure of refrigerants Titre original : Modèle précis et général pour la prévision de la pression de vapeur des frigorigènes Type de document : texte imprimé Auteurs : Ehsan Sanjari, Auteur ; Mehrdad Honarmand, Auteur ; Hamidreza Badihi, Auteur Année de publication : 2013 Article en page(s) : pp. 1327–1332 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Vapor  pressure;  Refrigerant;  Predictive  model;  Universal  method Résumé : The examination of the available vapor pressure data in the case of the methane, ethane, propane and butane halogenated refrigerants, allowed the derivation and recommendation of standard equations for this property. In this study a new universal substance-independent equation for vapor pressure as a function of reduced temperature, critical pressure, and acentric factor has been developed to estimate vapor pressures of refrigerants. With the presented model, vapor pressures have been calculated and compared with the data reported in data compilation for 28 refrigerants for 5600 data points, and the overall average absolute percentage deviation is only 0.52%. The accuracy of obtained model has been compared to the mostly used predictive models and the comparison indicates that the proposed method provide more accurate results than other methods used in this work. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713000224 [article] An accurate generalized model for predict vapor pressure of refrigerants = Modèle précis et général pour la prévision de la pression de vapeur des frigorigènes [texte imprimé] / Ehsan Sanjari, Auteur ; Mehrdad Honarmand, Auteur ; Hamidreza Badihi, Auteur . - 2013 . - pp. 1327–1332. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 4 (Juin 2013) . - pp. 1327–1332 Mots-clés : Vapor  pressure;  Refrigerant;  Predictive  model;  Universal  method Résumé : The examination of the available vapor pressure data in the case of the methane, ethane, propane and butane halogenated refrigerants, allowed the derivation and recommendation of standard equations for this property. In this study a new universal substance-independent equation for vapor pressure as a function of reduced temperature, critical pressure, and acentric factor has been developed to estimate vapor pressures of refrigerants. With the presented model, vapor pressures have been calculated and compared with the data reported in data compilation for 28 refrigerants for 5600 data points, and the overall average absolute percentage deviation is only 0.52%. The accuracy of obtained model has been compared to the mostly used predictive models and the comparison indicates that the proposed method provide more accurate results than other methods used in this work. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713000224