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Performance evaluation of nano-lubricants at thrust slide-bearing of scroll compressors.

Author(s) : LEE J. K., CHO S. W., KIM H. S., et al.

Summary

The paper presents the friction and anti-wear characteristics of nano-oil with a 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 using 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 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 by the lubrication in the friction surfaces. Carbon nano-oil enhances the characteristics of the anti-wear and friction at the thrust slide-bearing of scroll compressors.

Details

  • Original title: Performance evaluation of nano-lubricants at thrust slide-bearing of scroll compressors.
  • Record ID : 2007-0622
  • Languages: English
  • Source: ACRA-2006. Proceedings of the 3rd Asian conference on refrigeration and air conditioning.
  • Publication date: 2006/05/21

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