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Efficient helium recondensing using a 4 K pulse tube cryocooler.

Author(s) : WANG C.

Type of article: Article

Summary

This paper introduces helium recondensing in a 4000 l dewar using a 4 K pulse tube cryocooler at Amundsen-Scott research station atthe South Pole. The helium dewar has a normal boil-off rate of 14 l/day. Two features of cooling the dewar neck by helium vapour andprecooling helium gas to be liquefied ensured high efficiency of the pulse tube recondenser in this application. The liquefier/recondenser has being successfully operating in the dewar at South Pole station since February 2005. It not only maintains zero boil-off of the dewar, but also liquefies helium gas supplied from outside of the dewar with a rate around 2.7 l/day. [Reprinted with permission from Elsevier. Copyright, 2005].

Details

  • Original title: Efficient helium recondensing using a 4 K pulse tube cryocooler.
  • Record ID : 2006-2750
  • Languages: English
  • Source: Cryogenics - vol. 45 - n. 12
  • Publication date: 2005/12

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