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The effect of clearance control on the performance of an oil-free linear refrigeration compressor and a comparison between using a bleed flow and a DC current bias.

Author(s) : LIANG K., STONE R., DADD M., et al.

Type of article: Article, IJR article

Summary

A moving magnet type oil-free linear compressor has been designed for applications such as electronics cooling. A control system using a solenoid operated valve was developed for DC offset and axial clearance control. Operation of the linear compressor with a fixed clearance of 0.8?mm was compared with a zero DC offset operation. The fixed clearance operation requires a higher power input.
The mean piston position can be controlled by using a DC bias on the drive voltage or by using a bleed flow from the compressor body to the suction side of the compressor. Using a DC bias on the drive voltage induces a higher power loss than using a bleed flow when there is a small radial clearance between the piston and cylinder. This provides evidence that the piston control in a refrigeration system with capacity control should be for a zero DC offset using a bleed flow.

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Format PDF

Pages: 407-417

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Details

  • Original title: The effect of clearance control on the performance of an oil-free linear refrigeration compressor and a comparison between using a bleed flow and a DC current bias.
  • Record ID : 30018608
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 69
  • Publication date: 2016/09

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