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Effects of direct-current gas flow on performance of two-stage 4 K-pulse tube coolers.

Author(s) : WANG C., THUMMES G., HEIDEN C.

Type of article: Article

Summary

Direct-current flow effects in a 4 K pulse tube cooler were studied by numerical analysis and experiment. Numerical predictions show that a negative direct-current flow from the hot end of the pulse tube to the inlet of regenerator has two positive effects on the cooler performance: increasing cooling capacity of the pulse tube; and dissipating the enthalpy flow at the hot end of the pulse tube. Several functions which cause direct-current flow, such as valve timing and geometry of double-inlet valve and direct-current flow bypass, were tested in the two-stage 4 K pulse tube cooler.

Details

  • Original title: Effects of direct-current gas flow on performance of two-stage 4 K-pulse tube coolers.
  • Record ID : 1999-3334
  • Languages: English
  • Source: Cryogenics - vol. 38 - n. 6
  • Publication date: 1998/06

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