Rotary displacement compression heat transfer systems incorporat

Details Rotary displacement compression heat transfer systems incorporat Rotary displacement compression heat transfer systems incorporat

1988-05-27

1990-04-17

Capossela, Ronald C.

Refrigeration

Processes

Lubricant handling

62114, 62468, 62502, 252 58, 252 68, F25B 4302

Patent

active

049169149

ABSTRACT:
A rotary displacement compression heat transfer system and method for improving its efficiency includes a rotary displacement compressor for compressing a refrigerant, a condensor connected with the outlet of the compressor, an evaporator connected with the inlet of the compressor, an oil pump for injecting oil into the compressor, an oil separator for separating out the oil and recirculating it to the compressor, a non-chlorinated fluorinated refrigerant, and a synthetic oil providing an inverse solubility characteristic where a mixture of the refrigerant and oil has two immiscible phases in the compressor's operating temperature range at a weight concentration of oil in the range of about 10-60% and has only one dissolved liquid phase at a temperature in the evaporator's operating range at a weight concentration of oil less than about 5%.

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