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Two-stage 4 K pulse tube coolers: performance and application.

Author(s) : WANG C., THUMMES G., HEIDEN C.

Summary

The first two-stage pulse tube cooler, designed by aid of numerical analysis, was able to reach a lowest temperature of 2.23 K and a cooling power of 370 milliwatts at 4.2 K. By further optimizing the structure and operating parameters as well as negative direct-current flow, the latest two-stage pulse tube cooler so far can provide a cooling power of 0.50 watts at 4.2 K. Helium 4 has been successfully liquefied with a liquefaction rate of 0.13 litre/hour and a niobium(3)-tin magnet has been cooled down to 2.6 K by using the two-stage 4 K pulse tube coolers.

Details

  • Original title: Two-stage 4 K pulse tube coolers: performance and application.
  • Record ID : 1999-2026
  • Languages: English
  • Source: Cryogenics and refrigeration. Proceedings of ICCR '98.
  • Publication date: 1998/04/21
  • Document available for consultation in the library of the IIR headquarters only.

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