Compressibility of Oil/Refrigerant Lubricants in Elasto-Hydrodynamic Contacts
Keyword(s):
R 134A
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A high-pressure chamber is used to study lubricant compressibility when refrigeration oil is diluted by refrigerant. The tested lubricant in this work is a POE (polyol ester) oil, POE diluted with nonchlorinated (HFC) refrigerant R-134a, a naphthenic mineral oil, and the mineral oil diluted with the chlorinated (HCFC) refrigerant R-22. The high-pressure chamber experiments show that by adding 20 wt% of R-134a to the polyol ester oil, the stiffness of the lubricant increases by approximately 38 wt% at 1 GPa and is much higher than for R-22 and mineral oil.
Keyword(s):
2017 ◽
Vol 98
(5)
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pp. 619-624
2013 ◽
Vol 10
(7)
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pp. 820-832
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Keyword(s):
2016 ◽
Vol 53
(2)
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pp. 144-153
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Keyword(s):