Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Performance Evaluation of Nano-Lubricants at Thrust Slide-Bearing of Scroll Compressors

나노 윤활유를 이용한 스크롤 압축기 스러스트 베어링의 윤활특성 평가

  • Cho, Sang-Won (Department of Mechanical Engineering, Pusan National University) ;
  • Kim, Hong-Seok (Department of Mechanical Engineering, Pusan National University) ;
  • Ahn, Young-Chull (Department of Mechanical Engineering, Pusan National University) ;
  • Lee, Jung-Eun (Department of Mechanical Engineering, Pusan National University) ;
  • Lee, Jae-Keun (Department of Mechanical Engineering, Pusan National University) ;
  • Lee, Hyeong-Kook (Digital Appliance Research Laboratory, LG Electronics Inc.) ;
  • Lee, Byeong-Chul (Digital Appliance Research Laboratory, LG Electronics Inc.) ;
  • Kim, Dong-Han (Digital Appliance Research Laboratory, LG Electronics Inc.) ;
  • Park, Jin-Sung (Digital Appliance Research Laboratory, LG Electronics Inc.)
  • Published : 2006.06.21
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Abstract

This paper presents the friction and anti-wear characteristics of nano-oil with n mixture of a refrigerant oil and carbon nano-particles in the thrust slide-bearing of scroll compressors. Frictional loss in the thrust slide-bearing occupies a large part of total mechanical loss in scroll compressors. The characteristics of friction and anti-wear Lising nano-oil is evaluated using the thrust bearing tester for measuring friction surface temperature and the coefficient of friction at the thrust slide-bearing as a function of normal loads up to 4,000 N and orbiting speed up to 3,200 rpm. It is found that the coefficient of friction increases with decreasing orbiting speed and normal force. The friction coefficient of carbon nano-oil is 0.015, while that of pure oil is 0.023 under the conditions of refrigerant gas R-22 at the pressure of 5 bars. It is believed that carbon nano-particles can be coated on the friction surfaces and the interaction of nano-particles between surfaces can be improved the lubrication in the friction surfaces. Carbon nano-oilenhances the characteristics of the anti-wear and friction at the thrust slide-bearing of scroll compressors.

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