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State of the art of helium liquefaction and refrigeration plants.

Author(s) : WILHELM H., LOEHLEIN K., UNGRICHT T.

Summary

A new design for small-scale helium liquefiers with a liquefaction capacity between 20 and 290 l/h LHe is presented. Compared to the old liquefier generation efficiencies and liquefaction rates could be enlarged, and shorter cool down times have been achieved. Improved components are presented and their impact on the plant performance are discussed. The effect of different parameters, for instance compression power and LN2 precooling on liquefaction rate and overall efficiency are presented for different sizes of the newest helium liquefier generation. Results from the first operating plants are presented and compared to the performance of liquefiers of the old generation.

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Pages: 2006-3/ICEC I-A4

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Details

  • Original title: State of the art of helium liquefaction and refrigeration plants.
  • Record ID : 2008-0477
  • Languages: English
  • Source: Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
  • Publication date: 2006/07/17

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