Thermodynamic Analysis of a Conceptual Fixed-Bed Solar Thermochemical Cavity Receiver–Reactor Array for Water Splitting Via Ceria Redox Cycling
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2021-06-24
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Language
en
Pages
18
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Frontiers in Energy Research, Volume 9
Abstract
We propose a novel solar thermochemical receiver–reactor array concept for hydrogen production via ceria redox cycling. The receiver–reactor array can improve the solar-to-fuel efficiency by realizing the heat recuperation, reduction, and oxidation processes synchronously. A linear matrix model and a lumped parameter model are developed to predict thermal performance of the new solar thermochemical system. The system thermal performance is characterized by heat recovery effectiveness of solid-phase and solar-to-fuel efficiency. Investigated parameters include reduction temperature, oxygen partial pressure, number of receiver–reactors, concentration ratio, and gas-phase heat recovery effectiveness. For baseline conditions, the solid-phase heat recovery effectiveness and the solar-to-fuel efficiency are found to be 81% and 27%, respectively. For perfect gas-phase heat recovery and a solar concentration ratio of 5,000, the solar-to-fuel efficiency exceeds 40%.Description
Publisher Copyright: © Copyright © 2021 Yang, Li, Wang, Li, Wang, Lund and Lipiński.
Keywords
cerium oxide, heat recovery, non-stoichiometry, solar thermochemistry, water splitting
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Citation
Yang, S, Li, L, Wang, B, Li, S, Wang, J, Lund, P & Lipiński, W 2021, ' Thermodynamic Analysis of a Conceptual Fixed-Bed Solar Thermochemical Cavity Receiver–Reactor Array for Water Splitting Via Ceria Redox Cycling ', Frontiers in Energy Research, vol. 9, 565761 . https://doi.org/10.3389/fenrg.2021.565761