A two-phase, multi-dimensional, multi-physics computational model based on the finite-element method is presented for simulating the solar thermochemical water splitting process in which hydrogen gas is produced from steam. The model takes into account heat transfer, gas-phase diffusion and advection of neutral species in open channels and through pores of the porous reactant layer, solid-state transport of charged species, and redox chemical reactions. Preliminary results (temperature distribution, velocity field, and species concentration) computed from the gas-phase transport dominating (i.e., resistance to solid-state transport is taken to be negligible) regime are presented to illustrate the utility of the model. Efforts are underway to improve the present first-generation model by incorporating solid-state transport with more realistic kinetic model, internal radiation, reactant-layer support, and temperature-dependent properties.
- Advanced Energy Systems Division and Solar Energy Division
A Two-Phase Model for Solar Thermochemical Water Splitting With FeO/Fe3O4
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Chen, KS, & Hogan, RE. "A Two-Phase Model for Solar Thermochemical Water Splitting With FeO/Fe3O4." Proceedings of the ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences. ASME 2009 3rd International Conference on Energy Sustainability, Volume 1. San Francisco, California, USA. July 19–23, 2009. pp. 261-268. ASME. https://doi.org/10.1115/ES2009-90228
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