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A 3He pulse tube cooler operating down to 1.3 K.

Author(s) : JIANG N., LINDEMANN U., GIEBELER F., et al.

Type of article: Article

Summary

Regenerative cryocoolers that employ 4He as working fluid can only reach a lowest temperature of about 2 K. This limitation can be overcome by the use of 3He as working fluid. The authors report on the performance of a two-stage pulse tube cooler that consists of two parallel stages with independent gas circuits. The pressure oscillation in each stage is generated by means of a separate compressor in combination with a rotary valve. Using 3He as the working fluid in the 2nd stage, a minimum stationary temperature of 1.27 K has been achieved, which is, up to now, the lowest temperature obtained by regenerative cryocoolers. At an electrical input power of 1.3 kW, the 2nd stage provides a cooling power of 42 mW at 2.0 K and 518 mW at 4.2 K.

Details

  • Original title: A 3He pulse tube cooler operating down to 1.3 K.
  • Record ID : 2005-1087
  • Languages: English
  • Source: Cryogenics - vol. 44 - n. 11
  • Publication date: 2004/11

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