Method of improving performance of refrigerant systems

Details Method of improving performance of refrigerant systems Method of improving performance of refrigerant systems

C - Chemistry, Metallurgy

09

K

C09K 5/04 (2006.01) C10M 105/38 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2375742

A method of improving performance of refrigerant systems such as refrigerators and air conditioners that utilize a re-frigerant working fluid. The working fluid consists essentially of a heat transfer fluid and a lubricant that is miscible and is otherwise compatible with the heat transfer fluid at all operating temperatures of the refrigerant system. The method is directed particularly to chlorine-free fluoro-group organic fluids and more particularly to hydrofluorocarbon heat transfer fluids. The preferred lubricants comprise polyol ester basestocks and compounded polyol esters that are highly miscible with such hydrofluorocarbon heat transfer fluids.

L'invention concerne un procédé destiné à améliorer le fonctionnement de systèmes de réfrigération, tels que les réfrigérateurs et les conditionneurs d'air faisant appel à un fluide actif de réfrigération. Le fluide actif est essentiellement constitué par un fluide de transfert de chaleur et par un lubrifiant miscible ou compatible avec le fluide de transfert de chaleur à n'importe quelle température pendant le fonctionnement du système de réfrigération. Le procédé se rapporte notamment à des fluides organiques du groupe fluoro exempts de chlore, et plus particulièrement à des fluides de transfert de chaleur hydrofluorocarbonés. Parmi les lubrifiants préférés, on trouve des huiles de base de polyolester et des polyolesters composés hautement miscibles avec ces fluides de transfert de chaleur hydrofluorocarbonés.

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