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    Performance analysis of a high-temperature magnesium hydride reactor tank with a helical coil heat exchanger for thermal storage

    Access Status
    Fulltext not available
    Embargo Lift Date
    2022-10-30
    Authors
    Mathew, Arun
    Nadim, Nima
    Chandratilleke, Tilak
    Humphries, Terry
    Paskevicius, Mark
    Buckley, Craig
    Date
    2020
    Type
    Journal Article
    
    Metadata
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    Citation
    Mathew, A. and Nadim, N. and Chandratilleke, T.T. and Humphries, T.D. and Paskevicius, M. and Buckley, C.E. 2020. Performance analysis of a high-temperature magnesium hydride reactor tank with a helical coil heat exchanger for thermal storage. International Journal of Hydrogen Energy. 46 (1): pp. 1038-1055.
    Source Title
    International Journal of Hydrogen Energy
    DOI
    10.1016/j.ijhydene.2020.09.191
    ISSN
    0360-3199
    Faculty
    Faculty of Science and Engineering
    School
    School of Civil and Mechanical Engineering
    School of Electrical Engineering, Computing and Mathematical Sciences (EECMS)
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/FT160100303
    http://purl.org/au-research/grants/arc/LP150100730
    http://purl.org/au-research/grants/arc/LP120101848
    URI
    http://hdl.handle.net/20.500.11937/82256
    Collection
    • Curtin Research Publications
    Abstract

    © 2020 Hydrogen Energy Publications LLC

    Metal hydrides are regarded as one of the most attractive options for thermal energy storage (TES) materials for concentrated solar thermal applications. Improved thermal performance of such systems is vitally determined by the effectiveness of heat exchange between the metal hydride and the heat transfer fluid (HTF). This paper presents a numerical study supported by experimental validation on a magnesium hydride reactor fitted with a helical coil heat exchanger for enhanced thermal performance. The model incorporates hydrogen absorption kinetics of ball-milled magnesium hydride, with titanium boride and expanded natural graphite additives obtained by Sievert's apparatus measurements and considers thermal diffusion within the reactor to the heat transfer fluid for a realistic representation of its operation. A detailed parametric analysis is carried out, and the outcomes are discussed, examining the ramifications of hydrogen supply pressure and its flow rate. The study identifies that the enhancement of thermal conductivity in magnesium hydride has an insignificant impact on current reactor performance.

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