Abstract
The numerical evaluation of a multi-channeled solar reactor coated with ZnFe2O4 film is performed by using a pore-level simulation. A ray-tracing in the concentrator allow to obtain the solar flux distribution at the aperture of the channels. Then a MC-ray tracing enable to analyze the radiative heat transfer in the porous media in order to optimize the pore-level geometry for maximum absorptance. The model considers the optical properties of ZnFe2O4 films deposited on zirconia substrate surrounded by argon, which were obtained with the characteristic matrix method. This approach allows to account for important reactor design parameters, such as ZnFe2O4 layer thickness, incoming radiation profile, diameter and length of pore.
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