Dynamic Experimental Study of the Multi-Bypass Pulse Tube Refrigerator with Two-Bypass Tubes

  • Y. L. Ju
  • C. Wang
  • Y. Zhou
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 43)


A dynamic experimental apparatus has been constructed to investigate the instantaneous velocity and pressure in the multi-bypass pulse tube refrigerator(MPTR). Some important experimental results of the instantaneous measurements of the velocity and the pressure in the MPTR with two-bypass tubes during actual operation are presented. The effects of the middle-bypass version on the dynamic pressure and mass flow rate at the cold end of the pulse tube are evaluated from experimental measurements. DC-flow phenomena are observed in this MPTR. The reasons of the multi-bypass version improved the performance of pulse tube refrigerator are given.


Mass Flow Rate Flow Area Pulse Tube Bypass Tube Refrigeration Capacity 
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Copyright information

© Springer Science+Business Media New York 1998

Authors and Affiliations

  • Y. L. Ju
    • 1
  • C. Wang
    • 1
  • Y. Zhou
    • 1
  1. 1.Cryogenic LaboratoryChinese Academy of SciencesBeijingChina

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