FRICTION LOSSES OF THE ECOLOGICAL COMPRESSOR.EXPERIMENTAL INVESTIGATIONS AND ANALYSIS

摘要

Energy consumption of household appliances is strictly limited by EC regulations.This article presents results of experimental investigation of household refrigerating compressor’s friction losses.The main objective of the investigation was achieving higher compressors efficiency.Here the authors try to summarize and present deeper analysis of obtained results.The research revealed that for modern compressors the oils viscosity has low influence on friction losses.The authors draw conclusion that friction losses of such compressors are more determined by boundary lubrication than by hydrodynamic lubrication.With lower viscosity oils part of boundary friction losses is increasing.The oils of refrigerating compressors holds big amount of dissolved refrigerant.This increases influence of cavitation on load-carrying capacity of oils film.The problem is further complicated by increasing difference between compressors test conditions and its operation conditions in refrigerator.