THE EFFECT OF DIFFERENT MIXTURES OF OIL AND REFRIGERANT ON THE SURFACE OF THE SLIDING PISTON COMPRESSORS
Journal Title: Tribologia - Year 2014, Vol 256, Issue 4
Abstract
Due to valid regulations concerning the application of substances weakening the ozone layer, at present, there is reversion to ecological refrigerants. The purpose of the work was testing the influence of substituting the refrigerant R134a with ecological propane in the mixture of oil and refrigerant on sliding surfaces of piston compressors. The tests were carried out in mixtures of mineral oil with refrigerants R134a and R290 and in mixtures of synthetic polyester oil with refrigerants R134a and R290. The tests were performed with the use of a friction machine using a pair type block-on-ring, which was situated in the chamber simulating the inside of the refrigerating compressor. The results obtained from the performed tests confirm the possibility of using propane instead of R134a.
Authors and Affiliations
Przemysław TYCZEWSKI, Wiesław ZWIERZYCKI
Keywords
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