(346c) Evaluating the Performances of Reduction Process in the Solar Thermochemical Two-Step CO2 Splitting Based on Ceria Redox Reactions
In this work, a numerical analysis is applied to study on the performance of CeO2 reduction process in a segment of cavity-receiver reactor. The CeO2 is presented as catalyst particles in the domain to mimic the structure of porous medium. A three-dimension transient model is applied to simulate the momentum, heat, and mass transfer in the domain. CeO2 particle size, void fraction of domain, purge gas velocity and radiation flux rate are four key parameters that are analyzed in this work. By investigating on the influences of each factor to the reduction reaction, an optimized reaction rate can be achieved, which is beneficial to improve the solar to fuel efficiency of the reactor.