Documents disponibles écrits par cet auteur

Influence of nanoparticles dispersion in POE oils on lubricity and R134a solubility / Sergio Bobbo in International journal of refrigeration, Vol. 33 N° 6 (Septembre 2010) 

Public ISBD [article]  in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1180-1186 Titre : Influence of nanoparticles dispersion in POE oils on lubricity and R134a solubility Titre original : Influence de la dispersion des nanoparticules dans les huiles POE sur la lubricité et la solubilité de R134a Type de document : texte imprimé Auteurs : Sergio Bobbo, Auteur ; Laura Fedele, Auteur ; Monica Fabrizio, Auteur Année de publication : 2010 Article en page(s) : pp. 1180-1186 Note générale : Génie Mécanique Langues : Anglais (eng) Mots-clés : Refrigeration  system  Compression  system  R134a  Lubrication  Experiment  Additive  Titanium  dioxide-particle  Polyolester-solubility Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Nanotechnologies offer the opportunity to improve the characteristics of the oil and the oil–refrigerant mixture in refrigeration and air conditioning equipments by dispersing nanoparticles in the oil. Here a study of the influence of the dispersion of single wall carbon nanohorns (SWCNH) and titanium dioxide (TiO2) on the tribological properties of a commercial POE oil is presented, together with the effects on the solubility of R134a at different temperatures. The results obtained showed that the tribological behaviour of the base lubricant here considered can be either improved or worsen, depending on the property (anti-wear or extreme-pressure behaviour), by adding small amount of nanoparticles. On the other hand, nanoparticles dispersion in the base oil did not affect significantly the solubility, suggesting the independence of the thermodynamic properties of the oil from the presence of nanoparticles. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000794 [article] Influence of nanoparticles dispersion in POE oils on lubricity and R134a solubility = Influence de la dispersion des nanoparticules dans les huiles POE sur la lubricité et la solubilité de R134a [texte imprimé] / Sergio Bobbo, Auteur ; Laura Fedele, Auteur ; Monica Fabrizio, Auteur . - 2010 . - pp. 1180-1186. Génie Mécanique Langues : Anglais (eng) in International journal of refrigeration > Vol. 33 N° 6 (Septembre 2010) . - pp. 1180-1186 Mots-clés : Refrigeration  system  Compression  system  R134a  Lubrication  Experiment  Additive  Titanium  dioxide-particle  Polyolester-solubility Index. décimale : 621.5 Energie pneumatique. Machinerie et outils. Réfrigération Résumé : Nanotechnologies offer the opportunity to improve the characteristics of the oil and the oil–refrigerant mixture in refrigeration and air conditioning equipments by dispersing nanoparticles in the oil. Here a study of the influence of the dispersion of single wall carbon nanohorns (SWCNH) and titanium dioxide (TiO2) on the tribological properties of a commercial POE oil is presented, together with the effects on the solubility of R134a at different temperatures. The results obtained showed that the tribological behaviour of the base lubricant here considered can be either improved or worsen, depending on the property (anti-wear or extreme-pressure behaviour), by adding small amount of nanoparticles. On the other hand, nanoparticles dispersion in the base oil did not affect significantly the solubility, suggesting the independence of the thermodynamic properties of the oil from the presence of nanoparticles. DEWEY : 621.5 ISSN : 0140-7007 En ligne : http://www.sciencedirect.com/science/article/pii/S0140700710000794

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