Heat transfer compositions having improved miscibility with lubricating oil
AssigneeArkema France
InventorBéatrice Boussand
Life of this patent
Estimating the term…
Abstract
A composition including 2,3,3,3-tetrafluoropropene and a lubricating oil including a polyalkylene glycol and a polyol ester, the polyol ester content in the lubricating oil being less than or equal to 25%. A method of lubricating a vapor compression circuit, the method including using a mixture including a polyalkylene glycol and a polyol ester as lubricating oil in the vapor compression circuit, in combination with a heat transfer fluid comprising 2,3,3,3-tetrafluoropropene, the content of polyol ester in the lubricating oil being less than or equal to 25%. Further, the use of said composition in methods for heating or cooling.
Claims22
A composition comprising 2,3,3,3-tetrafluoropropene and a lubricating oil, the lubricating oil comprising a polyalkylene glycol and a polyol ester, the content of polyol ester in the lubricating oil being less than or equal to 25%.
A method of lubricating a vapor compression circuit, the method comprising using a mixture comprising a polyalkylene glycol and a polyol ester as lubricating oil in the vapor compression circuit, in combination with a heat transfer fluid comprising 2,3,3,3-tetrafluoropropene, the content of polyol ester in the lubricating oil being less than or equal to 25%.
A method for increasing the miscibility of 2,3,3,3-tetrafluoropropene with a polyalkylene glycol, the method comprising form a mixture of a polyol ester, 2,3,3,3-tetrafluoropropene and polyalkylene glycol.
A kit comprising:
- a heat transfer fluid comprising 2,3,3,3-tetrafluoropropene on the one hand;
- a lubricating oil comprising a polyalkylene glycol and a polyol ester on the other hand, the content of polyol ester in the lubricating oil being less than or equal to 25%;
- the kit configured for use in a heat transfer installation comprising a vapor compression circuit.
Dependencies are inferred from the claim text.