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Development of a 4-valve pulse tube cryocooler with a cooling power over 30 watts at 80 K.

[In Japanese. / En japonais.]

Author(s) : LI R., KANAO K., KANAZAWA Y.

Type of article: Article

Summary

A single-stage four-valve pulse tube cryocooler with a large cooling power at 80 K has been built and tested. The cryocooler has a regenerator stacked with stainless-steel screen disks of 250 mesh and a pulse tube 200 millimeters long. A rotary valve unit directly united to the hot end of the cold head is employed to control the mass flow at the hot ends of the regenerator and pulse tube. Three kinds of pulse tube, 18, 28 and 38 millimeters in diameter, were prepared for investigating the influence of pulse tube size on cooling performance. The cryocooler with the pulse tube of 28 millimeters in diameter delivered a cooling power of 33.5 watts at 80 K, and reached a no-load temperature of 20.5 K at a cycle frequency of 1.8 hertz. The paper gives the initial experimental results and a brief discussion.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 1999-2060
  • Languages: Japanese
  • Source: Cryogenics/ Cryog. Eng. - vol. 33 - n. 4
  • Publication date: 1998/04
  • Document available for consultation in the library of the IIR headquarters only.

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