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Dynamic simulation of a helium liquefier.

Author(s) : KUTZSCHBACH A., HABERSTROH C., QUACK H.

Summary

A commercial helium liquefier has been investigated. Whereas for the steady state design only component efficiencies are needed and mass and energy balances have to be calculated, for the dynamic calculation one needs also the thermal masses and the helium inventory. Transient mass and energy balances have to be formulated for many small elements and then solved simultaneously for all elements. Possible starting points for the simulation of the liquefier cycle are the stand still or the steady state operation at design conditions. The responses of the system to cool down or step and cyclic changes of the refrigeration or liquefaction rate are calculated and characterized.

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Pages: 2006-3/ICEC I-A4

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Details

  • Original title: Dynamic simulation of a helium liquefier.
  • Record ID : 2008-0475
  • Languages: English
  • Source: Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
  • Publication date: 2006/07/17

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