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Gas flow through narrow gaps at low pressure in super-insulation packages.

Author(s) : STIPSITZ J., DOBROZEMSKY R., HIRSCHL C., et al.

Summary

Super-insulation is the most effective thermal insulation for cryogenic applications and is employed in the vacuum space between the cold surfaces and the outer vacuum vessel. Satisfactory insulation performance can only be maintained if gas conduction is suppressed. Conductance measurements have been performed by means of an ultra-high vacuum system. Based on these conductances and outgassing rate data from own measurements and literature, the pressure drop between the center of the super-insulation and the chamber wall was calculated.

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Pages: 2008-1

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Details

  • Original title: Gas flow through narrow gaps at low pressure in super-insulation packages.
  • Record ID : 2008-1934
  • Languages: English
  • Source: Cryogenics 2008. Proceedings of the 10th IIR International Conference
  • Publication date: 2008/04/21

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