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Experimental study of a high-tolerance piston-cylinder pair in the alpha Ross-yoke Stirling refrigerator.

Author(s) : SMIRNOV D., DVORTSOV V., SAICHENKO A., et al.

Type of article: Article, IJR article

Summary

Optimal design of the sealing mechanism in the piston-cylinder pair of Stirling refrigerators is beneficial in terms of system’s cost, reliability, efficiency and cooling capacity; yet this is often overlooked in the literature. We report on our experimental study of a high-tolerance lubricated piston-cylinder pair with cast iron-steel materials as an integral part of the Ross-yoke alpha-type Stirling refrigerator. We measured: the gas leakage rate through the sealing gap; the friction force in the piston-cylinder pair; and the refrigerator temperature during operation. Our results show that owing to careful design, the loss of the ideal cooling capacity due to gas leakages amounted to 2.2%, and that the friction loss to the ideal cycle power input was 8.1%. We also discuss which type of lubricants demonstrates a higher resistance to operational loading and what engineering problems must be solved for reliable operation of the sealing mechanism.

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Pages: 235-245

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Details

  • Original title: Experimental study of a high-tolerance piston-cylinder pair in the alpha Ross-yoke Stirling refrigerator.
  • Record ID : 30025619
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 100
  • Publication date: 2019/04
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2019.01.018

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