An efficient helium circulation system with small cryocoolers.

[In Japanese. / En japonais.]

Author(s) : TAKEDA T., OKAMOTO M., ATSUDA K., et al.

Type of article: Article


The authors developed a helium circulating system that re-liquefies all the evaporating helium gas and consumes far less power than conventional systems, because warm helium gas at about 40 K collected high above the surface of the liquid helium in the Dewar is used to keep the Dewar cold, and because cold helium gas just above the liquid helium surface is collected and reliquefied while still cold. A special transfer tube with semi-concentric pipes was developed to make the system operate efficiently.


  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2008-2394
  • Languages: Japanese
  • Source: Journal of the Cryogenic Society of Japan - vol. 43 - n. 5
  • Publication date: 2008


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