Effective Heat and Mass Transport Properties of Anisotropic Porous Ceria for Solar Thermochemical Fuel Generation
Open access
Date
2012-01Type
- Journal Article
ETH Bibliography
yes
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Abstract
High-resolution X-ray computed tomography is employed to obtain the exact 3D geometrical configuration of porous anisotropic ceria applied in solar-driven thermochemical cycles for splitting H2O and CO2. The tomography data are, in turn, used in direct pore-level numerical simulations for determining the morphological and effective heat/mass transport properties of porous ceria, namely: porosity, specific surface area, pore size distribution, extinction coefficient, thermal conductivity, convective heat transfer coefficient, permeability, Dupuit-Forchheimer coefficient, and tortuosity and residence time distributions. Tailored foam designs for enhanced transport properties are examined by means of adjusting morphologies of artificial ceria samples composed of bimodal distributed overlapping transparent spheres in an opaque medium. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000047087Publication status
publishedExternal links
Journal / series
MaterialsVolume
Pages / Article No.
Publisher
MDPISubject
Porous media; Morphology; Transport; Radiation; Conduction; Convection; Fluid flow; Anisotropy; Solar; CeriaOrganisational unit
03530 - Steinfeld, Aldo / Steinfeld, Aldo
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ETH Bibliography
yes
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