Crossover volume translation soave – redlich – kwong equation of state for fluids / Xin-Hao Xu in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6580-6585 Titre : Crossover volume translation soave – redlich – kwong equation of state for fluids Type de document : texte imprimé Auteurs : Xin-Hao Xu, Auteur ; Yuan-Yuan Duan, Auteur ; Zhen Yang, Auteur Année de publication : 2012 Article en page(s) : pp. 6580-6585 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Thermodynamic properties Equations of state Résumé : The crossover method can be used in the classical equations of state (EOSs) to study the singular behavior of fluids in the critical region. However, this usually involves introducing additional system-dependent parameters and changing the values of classical parameters in the EOS with curve fits that require large amounts of experimental data. This work presents a crossover volume translation Soave-Redlich-Kwong (SRK) equation of state with unchanged classical parameters and crossover parameters either set as constants or determined solely by the critical compressibility factor. This EOS is used to describe the VLE and ppT data of 16 fluids (n-alkanes from methane to hexane, Ar, N2, O2 CO2, CO, H2S, SO2, R22, R125, and R245fa) to show that the crossover volume translation SRK EOS can accurately predict experimental data both far from and near the critical point. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867308 [article] Crossover volume translation soave – redlich – kwong equation of state for fluids [texte imprimé] / Xin-Hao Xu, Auteur ; Yuan-Yuan Duan, Auteur ; Zhen Yang, Auteur . - 2012 . - pp. 6580-6585. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6580-6585 Mots-clés : Thermodynamic properties Equations of state Résumé : The crossover method can be used in the classical equations of state (EOSs) to study the singular behavior of fluids in the critical region. However, this usually involves introducing additional system-dependent parameters and changing the values of classical parameters in the EOS with curve fits that require large amounts of experimental data. This work presents a crossover volume translation Soave-Redlich-Kwong (SRK) equation of state with unchanged classical parameters and crossover parameters either set as constants or determined solely by the critical compressibility factor. This EOS is used to describe the VLE and ppT data of 16 fluids (n-alkanes from methane to hexane, Ar, N2, O2 CO2, CO, H2S, SO2, R22, R125, and R245fa) to show that the crossover volume translation SRK EOS can accurately predict experimental data both far from and near the critical point. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867308

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