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Enhanced hydrogen storage of a LaNi5 based reactor by using phase change materials

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  • Ye, Yang
  • Yue, Yi
  • Lu, Jianfeng
  • Ding, Jing
  • Wang, Weilong
  • Yan, Jinyue

Abstract

Safe and efficient hydrogen storage technology is of great significance for large-scale hydrogen energy utilization. Using metal hydride (MH) materials such as LaNi5 for hydrogen storage is an effective way. In application, the heat and mass transfer characteristics in the reactor are one of the important factors and key problems affecting the hydrogen storage performance of MH. This paper proposes a novel hydrogen storage reactor installing a concentric finned tube heat exchanger and using phase change materials (PCM) by surrounding the reactor to improve heat transfer and hydrogen storage performance. A numerical model is built to describe transportation and reaction of two reactors with or without PCM. By comparison, the reactor surrounded by PCM has faster heat discharge and hydrogen absorption rate, and the absorption time is shortened by 50%. For the reactor with PCM, the optimal amount of PCM and the inlet velocity of heat transfer fluid (HTF) are investigated. The results show that the effective thermal conductivity of MH play a key role to improve heat transfer and reaction rate rather than that of PCM. Furthermore, increasing hydrogen supply pressure can effectively accelerate heat discharge and hydrogen absorption rate owning to larger temperature differences and improved reaction kinetics.

Suggested Citation

  • Ye, Yang & Yue, Yi & Lu, Jianfeng & Ding, Jing & Wang, Weilong & Yan, Jinyue, 2021. "Enhanced hydrogen storage of a LaNi5 based reactor by using phase change materials," Renewable Energy, Elsevier, vol. 180(C), pages 734-743.
    • Handle: RePEc:eee:renene:v:180:y:2021:i:c:p:734-743
    DOI: 10.1016/j.renene.2021.08.118
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    References listed on IDEAS

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    Cited by:

    1. Mou, Xiaofeng & Zhou, Wei & Bao, Zewei & Huang, Weixing, 2024. "Effective thermal conductivity of LaNi5 powder beds for hydrogen storage: Measurement and theoretical analysis," Renewable Energy, Elsevier, vol. 231(C).
    2. Ye, H. & Tao, Y.B. & Yu, X.K. & Dong, Z.J. & Xin, X., 2024. "Optimization on distribution of high thermal conductivity materials in metal hydride reactor for improving heat transfer performance," Renewable Energy, Elsevier, vol. 235(C).
    3. Puchanee Larpruenrudee & Nick S. Bennett & Zhen Luo & M. J. Hossain & Nawshad Haque & Emilie Sauret & Robert Fitch & Mohammad S. Islam, 2025. "A Review on the Overall Performance of Metal Hydride-Based Hydrogen Storage Systems," Energies, MDPI, vol. 18(5), pages 1-50, March.
    4. Dong, Xiaofei & Zhao, Hongxia & Li, Hailong & Fucucci, Giacomo & Zheng, Qingrong & Zhao, Honghua & Pu, Jinhuan, 2024. "A novel design of a metal hydride reactor integrated with phase change material for H2 storage," Applied Energy, Elsevier, vol. 367(C).
    5. Wang, Zexuan & Tian, Zhihui & Yao, Pufan & Zhao, Huimin & Xia, Chaoqun & Yang, Tai, 2022. "Improved hydrogen storage kinetic properties of magnesium-based materials by adding Ni2P," Renewable Energy, Elsevier, vol. 189(C), pages 559-569.
    6. Dai, Hui & Huang, Qingke & Zhou, Shaobin & Yan, Suying & Zhang, Wei & Gao, Ming, 2025. "Analysis and optimization of hydrogen storage performance of thermal self-equilibrium metal hydride reactors equipped with U-tubes," Renewable Energy, Elsevier, vol. 254(C).
    7. Ye, Yang & Zhu, Hongxing & Cheng, Honghui & Miao, Hong & Ding, Jing & Wang, Weilong, 2023. "Performance optimization of metal hydride hydrogen storage reactors based on PCM thermal management," Applied Energy, Elsevier, vol. 338(C).

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