Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Experimental Study on a GM-type Two-Stage Pulse Tube Refrigerator for Cryopump Applications

  • Lee, S.J. (HyunMin Laboratory, HyunMin Ltd.) ;
  • Hong, Y.J. (Korea Institute of Machinery and Materials) ;
  • Park, S.J. (Korea Institute of Machinery and Materials) ;
  • Kim, H.B. (Korea Institute of Machinery and Materials) ;
  • Kwon, S.B. (Department of Mechanical Engineering, Kyungpook National University)
  • Published : 2007.05.31
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Abstract

A single-stage and two-stage pulse tube refrigerators have been designed for cryopump application. The different diameters of pulse tube and regenerator have been investigated at single-stage pulse tube refrigerator(PTR). Experiments have been performed on single-stage PTR to reach minimum temperature with optimum valve opening at a few frequencies. And the two-stage pulse tube refrigerators have been assembled with tested single-stage pulse tube and tested. When orifice turn is opened to 9 and double inlet is opened to 3 at a single-stage, the lowest temperature of 33.7 K is achieved. The cooling capacity at single-stage is 38 W at temperature of 80 K. A two-stage pulse tube refrigerator has 16.3K at the second stage and 59.7K at the first stage. The cooling capacity achieved is 16.5 W at 80 K, the first stage and 0.6 W at 20 K, the second stage. Some details on the design of pulse tube refrigerator and the experimental apparatus are given.

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References

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