PRACTICAL STABILITY PERFORMANCE OF POLYVINYLETHER (PVE) WITH HFC REFRIGERANTS

摘要

Deterioration degree of PVE Lubricants was investigated by analyzing used oils after various compressor and system tests with HFC refrigerants. As a result, deterioration of PVE itself was not observed and long term reliability was confirmed. Furthermore, autoclave tests with water and air were performed to determine the reliability limit of PVE in comparison with mineral oil and polyolester. Through these studies, it was confirmed that PVE with HFC refrigerant has enough tolerance to air or water contamination to secure long term reliability.