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Development of a high-frequency coaxial multi-bypass pulse tube refrigerator below 14 K.

Author(s) : ZHOU Q., CHEN L., ZHU X., et al.

Type of article: Article

Summary

A high-frequency coaxial multi-bypass pulse tube refrigerator (MBPTR) was designed, manufactured, and tested. The cold finger is driven by a linear compressor through a connection tube to reduce the vibrations coming from the compressor. The pulse tube refrigerator adopts a coaxial configuration with a double- inlet and a single multi-bypass to improve the performance. With Er3Ni spheres at the cold end of the regenerator, the refrigerator can reach a no-load temperature of 13.9 K with 250W electric input power, which is the lowest temperature for this kind of refrigerator reported so far. Especially, the interplay of double-inlet and multi-bypass was observed experimentally. An Er3Ni spheres regenerator was found to be a potential substitution for stainless steel wire mesh (SSWM) regenerator for this kind of refrigerator.

Details

  • Original title: Development of a high-frequency coaxial multi-bypass pulse tube refrigerator below 14 K.
  • Record ID : 30014450
  • Languages: English
  • Source: Cryogenics - vol. 67
  • Publication date: 2015/04
  • DOI: http://dx.doi.org/10.1016/j.cryogenics.2015.01.006

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