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Study on the friction characteristics of a self-lubricating linear compressor using vapor injection.

Author(s) : ZHANG S., ZOU H., TANG M., KONG F., SHAO W., HU Z.

Type of article: IJR article

Summary

The self-lubricating linear compressor with aerostatic bearings has good prospect for the scenario which has difficulties of oil returning. This study presents a novel oil-free linear compressor and establishes a frictional damping model by using equivalent circuit approach to evaluate the mechanical performance of the compressor. The changes in friction damping characteristics of VISLLC under different piston strokes and injection pressure are analyzed. The flow resistance coefficients within the porous medium and gas gap are obtained by experimental tests and modeling analysis. Simulation results indicate that the equivalent frictional damping coefficient can be reduced by 36.1 % comparing with that of the non-injection and the efficiency can improved the by 17.2 %. The frictional damping coefficient in the porous bearing thickness of 0.9 mm at 600 kPa injection pressure is 3.64 N·s·m−1.

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Pages: 294-307

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Details

  • Original title: Study on the friction characteristics of a self-lubricating linear compressor using vapor injection.
  • Record ID : 30033229
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 169
  • Publication date: 2025/01
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2024.10.014

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