Characteristics of stands for wear tests of materials for refrigeration compressors elements

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Characteristics of stands for wear tests of materials for refrigeration compressors elements

Journal Title: Tribologia - Year 2010, Vol 231, Issue 3

Abstract

A desirable feature of oil lubricating refrigeration compressors is its solubility in refrigerant in the full range of working temperatures. It enables the majority of oil “pumped out” to the refrigeration circuit to return to the lubrication system. However, oil separated from the refrigerant and introduced to the lubrication system contains a certain amount of the refrigerant, so we can state that the compressor elements are lubricated with the mixture of oil and refrigerant of properties being surely worse than the ones of pure lubricating oils.<br/><br/>In the days of changing old refrigerants to the new ones, being more environmentally friendly, it is very important to use them with the proper compressor oils. Apart from the mentioned requirement of “solubility,” it is also necessary to ensure the right anti-friction and anti-wear properties (concerning “oil–refrigerant” mixtures). That is why the paper analyses literature information on test stands, enabling us to make a quantitative evaluation of this problem, and there are formulated assumptions for the construction of our own universal testing device.<br/><br/>

Authors and Affiliations

Kasper Górny, Przemysław Tyczewski, Wiesław Zwierzycki

Keywords

EP ID EP273617
DOI -
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