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Dynamic and thermodynamic analysis of doubly motorized miniature Stirling cryocooler using double coil linear motors.

Author(s) : GAUNEKAR A. S., NARAYANKHEDKAR K. G., BAPAT S. L.

Type of article: Article

Summary

Small capacity Stirling cryocoolers (about 1 watt à 80 K) for space-borne applications generally use linear electromagnetic drives (also called linear motors) for long, maintenance-free life and high reliability. Recent trends favour a double coil configuration for higher motor efficiency. The latest units have a split configuration with the displacer also being driven by a small capacity linear motor, giving better control over its mean position, stroke and phase lead over the compressor piston. After establishing a mathematical model for the working of a double coil linear motor, the paper analyses the link between thermodynamic performance and the dynamics of the two reciprocating components in a doubly motorized free piston, free displacer Stirling cryocooler.

Details

  • Original title: Dynamic and thermodynamic analysis of doubly motorized miniature Stirling cryocooler using double coil linear motors.
  • Record ID : 1994-3336
  • Languages: English
  • Source: Cryogenics - vol. 34 - n. 1
  • Publication date: 1994/01

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