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    Thermodynamic Analyses of Fuel Production Via Solar-Driven Ceria-Based Nonstoichiometric Redox Cycling: A Case Study of the Isothermal Membrane Reactor System

    Source: Journal of Solar Energy Engineering:;2019:;volume( 141 ):;issue: 002::page 21012
    Author:
    Li, Sha
    ,
    Kreider, Peter B.
    ,
    Wheeler, Vincent M.
    ,
    Lipiński, Wojciech
    DOI: 10.1115/1.4042228
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: A thermodynamic model of an isothermal ceria-based membrane reactor system is developed for fuel production via solar-driven simultaneous reduction and oxidation reactions. Inert sweep gas is applied on the reduction side of the membrane. The model is based on conservation of mass, species, and energy along with the Gibbs criterion. The maximum thermodynamic solar-to-fuel efficiencies are determined by simultaneous multivariable optimization of operational parameters. The effects of gas heat recovery and reactor flow configurations are investigated. The results show that maximum efficiencies of 1.3% (3.2%) and 0.73% (2.0%) are attainable for water splitting (carbon dioxide splitting) under counter- and parallel-flow configurations, respectively, at an operating temperature of 1900 K and 95% gas heat recovery effectiveness. In addition, insights on potential efficiency improvement for the membrane reactor system are further suggested. The efficiencies reported are found to be much lower than those reported in literature. We demonstrate that the thermodynamic models reported elsewhere can violate the Gibbs criterion and, as a result, lead to unrealistically high efficiencies. The present work offers enhanced understanding of the counter-flow membrane reactor and provides more accurate upper efficiency limits for membrane reactor systems.
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      Thermodynamic Analyses of Fuel Production Via Solar-Driven Ceria-Based Nonstoichiometric Redox Cycling: A Case Study of the Isothermal Membrane Reactor System

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4256794
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    contributor authorLi, Sha
    contributor authorKreider, Peter B.
    contributor authorWheeler, Vincent M.
    contributor authorLipiński, Wojciech
    date accessioned2019-03-17T11:11:15Z
    date available2019-03-17T11:11:15Z
    date copyright1/8/2019 12:00:00 AM
    date issued2019
    identifier issn0199-6231
    identifier othersol_141_02_021012.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4256794
    description abstractA thermodynamic model of an isothermal ceria-based membrane reactor system is developed for fuel production via solar-driven simultaneous reduction and oxidation reactions. Inert sweep gas is applied on the reduction side of the membrane. The model is based on conservation of mass, species, and energy along with the Gibbs criterion. The maximum thermodynamic solar-to-fuel efficiencies are determined by simultaneous multivariable optimization of operational parameters. The effects of gas heat recovery and reactor flow configurations are investigated. The results show that maximum efficiencies of 1.3% (3.2%) and 0.73% (2.0%) are attainable for water splitting (carbon dioxide splitting) under counter- and parallel-flow configurations, respectively, at an operating temperature of 1900 K and 95% gas heat recovery effectiveness. In addition, insights on potential efficiency improvement for the membrane reactor system are further suggested. The efficiencies reported are found to be much lower than those reported in literature. We demonstrate that the thermodynamic models reported elsewhere can violate the Gibbs criterion and, as a result, lead to unrealistically high efficiencies. The present work offers enhanced understanding of the counter-flow membrane reactor and provides more accurate upper efficiency limits for membrane reactor systems.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleThermodynamic Analyses of Fuel Production Via Solar-Driven Ceria-Based Nonstoichiometric Redox Cycling: A Case Study of the Isothermal Membrane Reactor System
    typeJournal Paper
    journal volume141
    journal issue2
    journal titleJournal of Solar Energy Engineering
    identifier doi10.1115/1.4042228
    journal fristpage21012
    journal lastpage021012-10
    treeJournal of Solar Energy Engineering:;2019:;volume( 141 ):;issue: 002
    contenttypeFulltext
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