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Study on the miniature turbo-expander reverse Brayton cryocooler designed for operation at 100 K.

Number: pap. n. 083

Author(s) : HOU Y., LAI T., ZHAO H., et al.

Summary

For the demands of space application, the prototype of the reverse Brayton cycle cryocooler was developed. The designed lowest temperature of this cryocooler is 80 K and a cooling capacity of 10 W at 100 K is expected. The main components of the cryocooler are a woven wire screen matrix heat exchanger and a gas bearing turbo-expander (GBTP). The heat transfer performance of a woven wire screen matrix heat exchanger was introduced; especially the overall performance of the miniature high speed turbo-expander was studied experimentally. A 9 mm diameter radial impeller is applied to drive the rotor and the normal speed of this GBTP is about 300,000 rpm. The experimental results show that the turbine maintains very stable running, small vibration and high efficiency.

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Pages: 457-461

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Details

  • Original title: Study on the miniature turbo-expander reverse Brayton cryocooler designed for operation at 100 K.
  • Record ID : 30007020
  • Languages: English
  • Source: Cryogenics 2012. Proceedings of the 12th IIR International Conference: Dresden, Germany, September 11-14, 2012.
  • Publication date: 2012/09/11

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