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A generalized equation for the surface tension of refrigerants / Giovanni Di Nicola in International journal of refrigeration, Vol. 34 N° 4 (Juin 2011) 

Public ISBD [article]  in International journal of refrigeration > Vol. 34 N° 4 (Juin 2011) . - pp. 1098-1108 Titre : A generalized equation for the surface tension of refrigerants Titre original : Equation généralisée pour la tension superficielle des frigorigènes Type de document : texte imprimé Auteurs : Giovanni Di Nicola, Auteur ; Matteo Moglie, Auteur Année de publication : 2011 Article en page(s) : pp. 1098-1108 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Critical  pressure  Critical  temperature  Refrigerant  Surface  tension  Survey Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This work presents a literature survey of the available data of the experimental surface tension data for refrigerants. The experimental data were collected for the following pure fluids: R11, R12, R13, R13B1, R14, R21, R22, R23, R32, R113, R114, R115, R123, R123a, R124, R125, R134, R134a, R141b, R143a, R152a, R218, R225ca, R225cb, R227ea, R236ea, R236fa, R245ca, R245fa, R365mfc, R846, and R1234yf. Experimental data were regressed with the most reliable semi-empirical correlating methods based on the corresponding state theory existing in the literature. To minimize the deviation between the predicted data and the experimental data and to find the optimal equation for data representation, a design of experiment procedure coupled with the Yates algorithm and the steepest ascent method was adopted. Finally, the influence of the dipole moment on the refrigerant surface tension prediction was discussed and a new equation to represent the surface tension of refrigerants was presented. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711000521 [article] A generalized equation for the surface tension of refrigerants = Equation généralisée pour la tension superficielle des frigorigènes [texte imprimé] / Giovanni Di Nicola, Auteur ; Matteo Moglie, Auteur . - 2011 . - pp. 1098-1108. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 34 N° 4 (Juin 2011) . - pp. 1098-1108 Mots-clés : Critical  pressure  Critical  temperature  Refrigerant  Surface  tension  Survey Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : This work presents a literature survey of the available data of the experimental surface tension data for refrigerants. The experimental data were collected for the following pure fluids: R11, R12, R13, R13B1, R14, R21, R22, R23, R32, R113, R114, R115, R123, R123a, R124, R125, R134, R134a, R141b, R143a, R152a, R218, R225ca, R225cb, R227ea, R236ea, R236fa, R245ca, R245fa, R365mfc, R846, and R1234yf. Experimental data were regressed with the most reliable semi-empirical correlating methods based on the corresponding state theory existing in the literature. To minimize the deviation between the predicted data and the experimental data and to find the optimal equation for data representation, a design of experiment procedure coupled with the Yates algorithm and the steepest ascent method was adopted. Finally, the influence of the dipole moment on the refrigerant surface tension prediction was discussed and a new equation to represent the surface tension of refrigerants was presented. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700711000521

Subcooled liquid density measurements and PvT measurements in the vapor phase for 3,3,3-trifluoroprop-1-ene (R1243zf) / Giovanni Di Nicola 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. 2209–2215 Titre : Subcooled liquid density measurements and PvT measurements in the vapor phase for 3,3,3-trifluoroprop-1-ene (R1243zf) Titre original : Mesures de la masse volumique du liquide sous-refroidi et mesures PvT lors de la phase gazeuse pour le 3,3,3-trifluoroprop-1-ène (R1243zf) Type de document : texte imprimé Auteurs : Giovanni Di Nicola, Auteur ; J. Steven Brown, Auteur ; Laura Fedele, Auteur Année de publication : 2014 Article en page(s) : pp. 2209–2215 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : 3,3,3-Trifluoroprop-1-ene  (R1243zf);  CF3CHdouble  bond;  length  as  m-dashCH2;  CAS  number  677-21-4;  liquid  density;  PvT  behavior;  tait  correlation Résumé : The fluorinated propene isomer R1243zf (3,3,3-trifluoroprop-1-ene, CF3CFdouble bond; length as m-dashCH2, CAS number 677-21-4) is a potential alternative refrigerant with short atmospheric lifetime, low-GWP, and low acute toxicity; however, because of its flammability it is being considered primarily as a component in blends. In this paper, 302 subcooled liquid density data and 101 vapor phase PvT data are presented. The subcooled liquid density data are measured for eight isotherms, evenly separated approximately from 283 K to 353 K, for pressures from close to saturation to 35 MPa and the vapor phase PvT data are measured for six isochores for temperatures approximately from 278 K to 368 K and for pressures approximately from 260 kPa to 912 kPa. In addition, a saturated liquid density correlation, a Tait correlation for the subcooled liquid density data, and a Martin–Hou Equation of State for the vapor phase PvT data are presented. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713002089 [article] Subcooled liquid density measurements and PvT measurements in the vapor phase for 3,3,3-trifluoroprop-1-ene (R1243zf) = Mesures de la masse volumique du liquide sous-refroidi et mesures PvT lors de la phase gazeuse pour le 3,3,3-trifluoroprop-1-ène (R1243zf) [texte imprimé] / Giovanni Di Nicola, Auteur ; J. Steven Brown, Auteur ; Laura Fedele, Auteur . - 2014 . - pp. 2209–2215. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 8 (Décembre 2013) . - pp. 2209–2215 Mots-clés : 3,3,3-Trifluoroprop-1-ene  (R1243zf);  CF3CHdouble  bond;  length  as  m-dashCH2;  CAS  number  677-21-4;  liquid  density;  PvT  behavior;  tait  correlation Résumé : The fluorinated propene isomer R1243zf (3,3,3-trifluoroprop-1-ene, CF3CFdouble bond; length as m-dashCH2, CAS number 677-21-4) is a potential alternative refrigerant with short atmospheric lifetime, low-GWP, and low acute toxicity; however, because of its flammability it is being considered primarily as a component in blends. In this paper, 302 subcooled liquid density data and 101 vapor phase PvT data are presented. The subcooled liquid density data are measured for eight isotherms, evenly separated approximately from 283 K to 353 K, for pressures from close to saturation to 35 MPa and the vapor phase PvT data are measured for six isochores for temperatures approximately from 278 K to 368 K and for pressures approximately from 260 kPa to 912 kPa. In addition, a saturated liquid density correlation, a Tait correlation for the subcooled liquid density data, and a Martin–Hou Equation of State for the vapor phase PvT data are presented. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700713002089

Surface tension prediction for refrigerant binary systems / Giovanni Di Nicola in International journal of refrigeration, Vol. 36 N° 2 (N° spécial) (Mars 2013) 

Public ISBD [article]  in International journal of refrigeration > Vol. 36 N° 2 (N° spécial) (Mars 2013) . - pp. 562–566 Titre : Surface tension prediction for refrigerant binary systems Titre original : Prévision de la tension superficielle dans les systèmes binaires de frigorigènes Type de document : texte imprimé Auteurs : Giovanni Di Nicola, Auteur ; Mariano Pierantozzi, Auteur Année de publication : 2013 Article en page(s) : pp. 562–566 Note générale : Refrigeration Langues : Anglais (eng) Mots-clés : Binary  system;  Critical  pressure;  Critical  temperature;  Refrigerant;  Surface  tension;  Survey Résumé : This work presents a literature survey of the available data of the experimental surface tension data for refrigerant binary systems. The experimental data were collected for the following binary systems: R32-R227ea, R32-R125, R32-R134a, R290-R32, R125-R152a, R290-R152a, R290-R600a, RE170-R290, R143a-R134a, R125-R134a, R125-R143a, R134a-R152a and R143a + R227ea. Two recently proposed equations for the prediction of the surface tension of pure fluids were evaluated for their abilities to predict the surface tension of binary systems. A new equation for the prediction of the surface tension of refrigerant binary systems based on the Corresponding States Principle theory is proposed. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002502 [article] Surface tension prediction for refrigerant binary systems = Prévision de la tension superficielle dans les systèmes binaires de frigorigènes [texte imprimé] / Giovanni Di Nicola, Auteur ; Mariano Pierantozzi, Auteur . - 2013 . - pp. 562–566. Refrigeration Langues : Anglais (eng) in International journal of refrigeration > Vol. 36 N° 2 (N° spécial) (Mars 2013) . - pp. 562–566 Mots-clés : Binary  system;  Critical  pressure;  Critical  temperature;  Refrigerant;  Surface  tension;  Survey Résumé : This work presents a literature survey of the available data of the experimental surface tension data for refrigerant binary systems. The experimental data were collected for the following binary systems: R32-R227ea, R32-R125, R32-R134a, R290-R32, R125-R152a, R290-R152a, R290-R600a, RE170-R290, R143a-R134a, R125-R134a, R125-R143a, R134a-R152a and R143a + R227ea. Two recently proposed equations for the prediction of the surface tension of pure fluids were evaluated for their abilities to predict the surface tension of binary systems. A new equation for the prediction of the surface tension of refrigerant binary systems based on the Corresponding States Principle theory is proposed. En ligne : http://www.sciencedirect.com/science/article/pii/S0140700712002502