METHODS AND APPARATUS USING REFRIGERANT COMPOSITIONS COMPRISING REFRIGERANT AND LUBRICANT COMPRISING PERFLUOROPOLYETHER AND NON-FLUORINATED LUBRICANT

摘要

Disclosed herein is a method to improve miscibility in refrigeration, air conditioning, heat pump or power cycle systems comprising charging a refrigeration, air conditioning or heat pump system with a refrigerant composition; wherein the refrigerant composition comprises at least one refrigerant and a lubricant comprising at least one perfluoropolyether and at least one non-fluorinated lubricant, provided that the refrigerant composition has no more than two liquid phases over the range of the composition and over a range of temperature from about −40° C. to about +60° C. Also disclosed is a refrigeration, air conditioning, heat pump, or power cycle system containing said refrigerant composition.

主权项

1. A method to improve miscibility in refrigeration, air conditioning, or heat pump systems comprising:
charging a refrigeration, air conditioning, or heat pump system with a refrigerant composition; wherein the refrigerant composition comprises at least one refrigerant and a lubricant; wherein the lubricant comprises at least one perfluoropolyether and at least one non-fluorinated lubricant, provided that the refrigerant composition has no more than two liquid phases over the range of the composition and over a range of temperature from about −40° C. to about +200° C.; and wherein the refrigeration, air conditioning, or heat pump system comprises an evaporator, a condenser, a compressor and an expansion device.