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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