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- W1997148303 abstract "Thermal transport processes are numerically analyzed for a porous ceria structure undergoing reduction in a novel redox reactor for solar thermochemical fuel production. The cylindrical reactor cavity is formed by an array of annular reactive elements comprising the porous ceria monolith integrated with gas inlet and outlet channels. Two configurations are considered, with the reactor cavity consisting of 10 and 20 reactive elements, respectively. Temperature dependent boundary heat fluxes are obtained on the irradiated cavity wall by solving for the surface radiative exchange using the net radiation method coupled to the heat and mass transfer model of the reactive element. Predicted oxygen production rates are in the range 40–60 μmol s−1 for the geometries considered. After an initial rise, the average temperature of the reactive element levels off at 1660 and 1680 K for the two geometries, respectively. For the chosen reduction reaction rate model, oxygen release continues after the temperature has leveled off which indicates that the oxygen release reaction is limited by chemical kinetics and/or mass transfer rather than by the heating rate. For a fixed total mass of ceria, the peak oxygen release rate is doubled for the cavity with 20 reactive elements due to lower local oxygen partial pressure." @default.
- W1997148303 created "2016-06-24" @default.
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- W1997148303 date "2015-06-01" @default.
- W1997148303 modified "2023-10-17" @default.
- W1997148303 title "Transient heat and mass transfer analysis in a porous ceria structure of a novel solar redox reactor" @default.
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- W1997148303 doi "https://doi.org/10.1016/j.ijthermalsci.2015.01.016" @default.
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