EVALUATION OF LUBRICATING PROPERTIES OF MIXTURES OF MINERAL OILS WITH REFRIGERANT R600A
Journal Title: Tribologia - Year 2016, Vol 267, Issue 3
Abstract
Current legal regulations concerning ozone-depleting substances and greenhouse gases result in a dynamic return to the use of natural refrigerants such as hydrocarbons. However, they are gases included in the A3 (combustible) security group, and that is why they are now mainly used in devices with low performance (mainly in household refrigerators). The most widely used hydrocarbon as a refrigerant in this group of devices is R600a (isobutene). The article presents a comparative assessment of the lubricity properties of oil-refrigerant mixtures of three mineral oils with R600a. The assessment was based on a sample wear volume of the block-on-ring node under the conditions approximating the operation of the compressor after an extensive standstill period. The oil/refrigerant mixture was obtained as a result of an appropriately extended mutual contact of both substances in a closed chamber.<br/><br/>
Authors and Affiliations
Kasper GÓRNY, Arkadiusz STACHOWIAK, Przemysław TYCZEWSKI, Wiesław ZWIERZYCKI
Keywords
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- EP ID EP246211
- DOI 10.5604/01.3001.0010.7296
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