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Dehydrogenation of Metal Hydride Reactor-Phase Change Materials Coupled with Light-Duty Fuel Cell Vehicles

Author

Listed:
  • Serge Nyallang Nyamsi

    (HySA Systems Competence Centre, South African Institute for Advanced Materials Chemistry, University of the Western Cape, Private Bag X17, Bellville 7535, South Africa)

  • Ivan Tolj

    (Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, R Boskovica 32, 21000 Split, Croatia)

  • Michał Jan Gęca

    (Faculty of Mechanical Engineering, Lublin University of Technology, Nadbystrzycka 36, PL-20-618 Lublin, Poland)

Abstract

The popularity of using phase change materials (PCMs) for heat storage and recovery of metal hydrides’ reaction has grown tremendously. However, a fundamental study of the coupling of such a system with a low-temperature PEM (polymer electrolyte membrane) fuel cell is still lacking. This work presents a numerical investigation of the dehydrogenation performance of a metal hydride reactor (MHR)-PCM system coupled with a fuel cell. It is shown that to supply the fuel cell with a constant H 2 flow rate, the PCM properties need to be in an optimized range. The effects of some design parameters (PCM freezing point, the initial desorption temperature, the nature and the size of the PCM) on the dehydrogenation performance of MHR-PCM system are discussed in detail. The results showed that the MHR-PCM could supply hydrogen at 12 NL/min only for 20 min maximum due to the significant endothermic effect occurring in the MHR. However, reducing the requested H 2 flowrate to 5.5 NL/min, the hydrogen desorption to a fuel cell is prolonged to 79 min. Moreover, this system can accommodate different PCMs such as paraffin and salt hydrates for comparable performance. This study demonstrates the ability of MHR-PCM systems to be used as range extenders in light-duty fuel cell vehicles.

Suggested Citation

  • Serge Nyallang Nyamsi & Ivan Tolj & Michał Jan Gęca, 2022. "Dehydrogenation of Metal Hydride Reactor-Phase Change Materials Coupled with Light-Duty Fuel Cell Vehicles," Energies, MDPI, vol. 15(9), pages 1-18, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:2982-:d:797044
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    References listed on IDEAS

    as
    1. Ye, Yang & Lu, Jianfeng & Ding, Jing & Wang, Weilong & Yan, Jinyue, 2020. "Numerical simulation on the storage performance of a phase change materials based metal hydride hydrogen storage tank," Applied Energy, Elsevier, vol. 278(C).
    2. Serge Nyallang Nyamsi & Ivan Tolj, 2021. "The Impact of Active and Passive Thermal Management on the Energy Storage Efficiency of Metal Hydride Pairs Based Heat Storage," Energies, MDPI, vol. 14(11), pages 1-24, May.
    3. Serge Nyallang Nyamsi & Ivan Tolj & Mykhaylo Lototskyy, 2019. "Metal Hydride Beds-Phase Change Materials: Dual Mode Thermal Energy Storage for Medium-High Temperature Industrial Waste Heat Recovery," Energies, MDPI, vol. 12(20), pages 1-27, October.
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    5. Serge Nyallang Nyamsi & Mykhaylo Lototskyy & Ivan Tolj, 2020. "Optimal Design of Combined Two-Tank Latent and Metal Hydrides-Based Thermochemical Heat Storage Systems for High-Temperature Waste Heat Recovery," Energies, MDPI, vol. 13(16), pages 1-18, August.
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