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Study on Improvement of Lubrication Characteristics for the Material of Compressor Friction Parts with Nano-oil  

Kim, Sung-Choon (Aircon Compressor Division, LG Electronics Inc.)
Kim, Kyong-Min (Department of Mechanical Engineering, Pusan National University)
Hwang, Yu-Jin (Department of Mechanical Engineering, Pusan National University)
Park, Young-Do (Department of Mechanical Engineering, Pusan National University)
Lee, Jae-Keun (Department of Mechanical Engineering, Pusan National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.21, no.10, 2009 , pp. 559-563 More about this Journal
Abstract
Performance of refrigerant oil at the thrust-bearing and at the journal-bearing of a scroll compressor is a significant factor. This paper presents the friction and anti-wear characteristics of nano oil with a mixture of a refrigerant oil and carbon nano particles. The characteristics of friction and anti-wear using nano-oil is evaluated using the disk on disk tester for measuring friction surface temperature and the coefficient of friction. The average friction coefficient of nano-oil was reduced by 60% compared to raw oil under 600 N and 1,000 rpm. It is believed that the interaction of nano particles between surfaces can be improved the lubrication in the friction surfaces. Worn surfaces of frictional specimen were also investigated by the optical and atomic force microscopy. Conclusively, it is expected that wear and friction coefficient of compressor can be reduced by alignment applying nano-oil as refrigerant oil.
Keywords
Compressor; Lubrication; Nano oil; Fullerene; Friction coefficient;
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