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Design and Performance Test of 2 kW Class Reverse Brayton Cryogenic System

Author

Listed:
  • Keuntae Lee

    (LNG and Cryogenic Technology Center, Korea Institute of Machinery & Materials, Gimhae 50963, Korea)

  • Deuk-Yong Koh

    (LNG and Cryogenic Technology Center, Korea Institute of Machinery & Materials, Gimhae 50963, Korea)

  • Junseok Ko

    (Department of Energy Conversion Systems, Korea Institute of Machinery & Materials, Daejeon 34103, Korea)

  • Hankil Yeom

    (Department of Energy Conversion Systems, Korea Institute of Machinery & Materials, Daejeon 34103, Korea)

  • Chang-Hyo Son

    (Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University, Pusan 48513, Korea)

  • Jung-In Yoon

    (Department of Refrigeration and Air-Conditioning Engineering, Pukyong National University, Pusan 48513, Korea)

Abstract

With the increased commercialization of high-temperature superconducting (HTS) power cables cooled using liquid nitrogen and the use of liquefied natural gas as fuel, the need for large-capacity reverse Brayton cryogenic systems is gradually increasing. In this paper, the thermodynamic design of a reverse Brayton cryogenic system with a cooling capacity of the 2 kW class at 77 K using neon as a refrigerant is described. Unlike conventional reverse Brayton systems, the proposed system uses a cryogenic turbo-expander, scroll compressor, and plate-type heat exchanger. The performance test conducted on the fabricated system is also described. The isentropic efficiency of the cryogenic turbo-expander was measured to be 86%, which is higher than the design specification. The effectiveness of the heat exchanger and the flow rate and operating pressure of the refrigerant were found to be lower than the design specifications. Consequently, the refrigeration capacity of the fabricated reverse Brayton cryogenic system was measured to be 1.23 kW at 77 K. In the future, we expect to achieve the targeted refrigeration capacity through further improvements. In addition, the faster commercialization of HTS power cables and more efficient storage of liquefied natural gas will be realized.

Suggested Citation

  • Keuntae Lee & Deuk-Yong Koh & Junseok Ko & Hankil Yeom & Chang-Hyo Son & Jung-In Yoon, 2020. "Design and Performance Test of 2 kW Class Reverse Brayton Cryogenic System," Energies, MDPI, vol. 13(19), pages 1-13, September.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:19:p:5089-:d:421556
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    References listed on IDEAS

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    1. Son, Hyunsoo & Kim, Jin-Kuk, 2020. "Energy-efficient process design and optimization of dual-expansion systems for BOG (Boil-off gas) Re-liquefaction process in LNG-fueled ship," Energy, Elsevier, vol. 203(C).
    2. Kwak, Dong-Hun & Heo, Jeong-Ho & Park, Seung-Ha & Seo, Seok-Jang & Kim, Jin-Kuk, 2018. "Energy-efficient design and optimization of boil-off gas (BOG) re-liquefaction process for liquefied natural gas (LNG)-fuelled ship," Energy, Elsevier, vol. 148(C), pages 915-929.
    3. Kochunni, Sarun Kumar & Joy, Jubil & Chowdhury, Kanchan, 2019. "LNG boil-off gas reliquefaction by Brayton refrigeration system – Part 2: Improvements over basic configuration," Energy, Elsevier, vol. 176(C), pages 861-873.
    4. Kochunni, Sarun Kumar & Chowdhury, Kanchan, 2019. "LNG boil-off gas reliquefaction by Brayton refrigeration system – Part 1: Exergy analysis and design of the basic configuration," Energy, Elsevier, vol. 176(C), pages 753-764.
    5. Seok-Ju Lee & Seong Yeol Kang & Minwon Park & DuYean Won & Jaeun Yoo & Hyung Suk Yang, 2020. "Performance Analysis of Real-Scale 23 kV/60 MVA Class Tri-Axial HTS Power Cable for Real-Grid Application in Korea," Energies, MDPI, vol. 13(8), pages 1-13, April.
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    Cited by:

    1. Jiongjiong Cai & Peng Ke & Xiao Qu & Zihui Wang, 2022. "Research on the Design of Auxiliary Generator for Enthalpy Reduction and Steady Speed Scroll Expander," Energies, MDPI, vol. 15(9), pages 1-17, April.

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