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Thermodynamic Analysis of G-M/J-T Helium Refrigeration Cycle for a Cryoadsorption Test Facility

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Abstract

A cryoadsorption test facility is developing for upgrade the cryopump of EAST neutral beam injector. To provide an optional cryogenic supply plan for the test facility, a Gifford-McMahon (G-M)/Joule-Thomson (J-T) helium refrigeration cycle is designed. In this paper, the influence of stage temperature of two-stages G-M cryocooler and J-T heat exchanger effectiveness on the performance of the cycle is thermodynamically analyzed. The results of the analysis make it clear that, for the cycle precooling power input, the temperature of cryocooler stages plays a very important role on cycle performance. And different operational J-T heat exchanger effectiveness and its thermal characteristics in the refrigeration cycle are also discussed.

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Acknowledgments

This work was supported by the National Magnetic Confinement Fusion Science Program of China (Contract No. 2013GB101000). We express our great appreciation to the NBI team which give us continuous encouragement and support.

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Authors and Affiliations

  1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, China

    Zhi-min Liu, Chang-cheng Ma, Yuan-lai Xie, Kui Cui, Bin Cheng & Chun-dong Hu

  2. University of Science and Technology of China, Hefei, 230026, China

    Zhi-min Liu, Chang-cheng Ma & Chun-dong Hu

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  1. Zhi-min Liu
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  2. Chang-cheng Ma
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  3. Yuan-lai Xie
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  4. Kui Cui
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  5. Bin Cheng
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  6. Chun-dong Hu
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Correspondence to Yuan-lai Xie.

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Liu, Zm., Ma, Cc., Xie, Yl. et al. Thermodynamic Analysis of G-M/J-T Helium Refrigeration Cycle for a Cryoadsorption Test Facility. J Fusion Energ 34, 1188–1192 (2015). https://doi.org/10.1007/s10894-015-9938-z

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  • DOI: https://doi.org/10.1007/s10894-015-9938-z

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