Hydride-based thermal energy storage

Adams, Marcus; Buckley, Craig E; Busch, Markus; Bunzel, Robin; Felderhoff, Michael; Heo, Tae Wook; Humphries, Terry; Jensen, Torben R; Klug, Julian; Klug, Karl H; Møller, Kasper T; Paskevicius, Mark; Peil, Stefan; Peinecke, Kateryna; Sheppard, Drew A; Stuart, Alastair D; Urbanczyk, Robert; Wang, Fei; Walker, Gavin S; Wood, Brandon C; Weiss, Danny; Grant, David M

Abstract

The potential and research surrounding metal hydride (MH) based thermal energy storage is discussed, focusing on next generation thermo-chemical energy storage (TCES) for concentrated solar power. The site availability model to represent the reaction mechanisms of both the forward and backward MH reaction is presented, where this model is extrapolated to a small pilot scale reactor, detailing how a TCES could function/operate in a real-world setting using a conventional shell & tube reactor approach. Further, the important parameter of effective thermal conductivity is explored using an innovative multi-scale model, to providing extensive and relevant experimental data useful for reactor and system design. Promising high temperature MH material configurations may be tuned by either destabilisation, such as using additions to Ca and Sr based hydrides, or by stabilisation, such as fluorine addition to NaH, MgH2, or NaMgH3. This versatile thermodynamic tuning is discussed, including the challenges in accurately measuring the material characteristics at elevated temperatures (500-700 °C). Attention to scale up is explored, including generic design and prototype considerations, and an example of a novel pilot-scale pillow-plate reactor currently in development; where materials used are discussed, overall tank design scope and system integration.

Citation

Adams, M., Buckley, C. E., Busch, M., Bunzel, R., Felderhoff, M., Heo, T. W., Humphries, T., Jensen, T. R., Klug, J., Klug, K. H., Møller, K. T., Paskevicius, M., Peil, S., Peinecke, K., Sheppard, D. A., Stuart, A. D., Urbanczyk, R., Wang, F., Walker, G. S., Wood, B. C., …Grant, D. M. (2022). Hydride-based thermal energy storage. Progress in Energy, 4(3), Article 032008. https://doi.org/10.1088/2516-1083/ac72ea

• Journal Article Type: Article
• Acceptance Date: May 22, 2022
• Online Publication Date: May 24, 2022
• Publication Date: 2022-07
• Deposit Date: Jan 20, 2025
• Publicly Available Date: Jan 22, 2025
• Journal: Progress in Energy
• Electronic ISSN: 2516-1083
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 4
• Issue: 3
• Article Number: 032008
• DOI: https://doi.org/10.1088/2516-1083/ac72ea
• Keywords: General Earth and Planetary Sciences; General Environmental Science
• Public URL: https://nottingham-repository.worktribe.com/output/8309979
• Publisher URL: https://iopscience.iop.org/article/10.1088/2516-1083/ac72ea