Flooded evaporator with enhanced oil return means

Details Flooded evaporator with enhanced oil return means Flooded evaporator with enhanced oil return means

F - Mech Eng,Light,Heat,Weapons

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B

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F25B 43/02 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01) F25B 1/047 (2006.01) F25B 31/00 (2006.01)

Patent

CA 1296536

PATENT Title FLOODED EVAPORATOR WITH ENHANCED OIL RETURN MEANS Inventors James R. Sand James C. Wendschlag Abstract A lubricant composition with decreased solubility in a liquid refrigerant and increased foaming characteristics useful in refrigeration systems to promote oil return to a compressor. A lubricant composition comprises a base lubricant, synthetic paraffinic oil, and a foaming agent. These ingredients are blended in predetermined amounts, so that when the lubricant is used in the refrigeration system, an oil rich layer will form atop the liquid refrigerant in the system's flooded evaporator, and a thick, stable foam will form when vaporized refrigerant boils up through the oil rich layer. The oil foam is then drawn through a connection at the top of the flooded evaporator and returned to the compressor.

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