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Prediction of the radiative properties of reconstructed alpha-SiC foams used for concentrated solar applications

Published online by Cambridge University Press:  08 October 2013

Benoit Rousseau ,
Simon Guevelou ,
Gilberto Domingues ,
Jerome Vicente ,
Cyril Caliot  and
Gilles Flamant
Benoit Rousseau
Affiliation:
CNRS UMR 6607, LTN, rue Christian Pauc, 44306 Nantes, France
Simon Guevelou
Affiliation:
CNRS UMR 6607, LTN, rue Christian Pauc, 44306 Nantes, France
Gilberto Domingues
Affiliation:
CNRS UMR 6607, LTN, rue Christian Pauc, 44306 Nantes, France
Jerome Vicente
Affiliation:
CNRS UMR 7343, IUSTI, 5 rue Enrico Fermi, 13453 Marseille, France
Cyril Caliot
Affiliation:
CNRS UPR 8521, PROMES, 7 rue de Four Solaire, 66120 Font Romeu Odeillo, France
Gilles Flamant
Affiliation:
CNRS UPR 8521, PROMES, 7 rue de Four Solaire, 66120 Font Romeu Odeillo, France
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Abstract

A SiC-based ceramic foam applied in solar thermal processes was characterized in detail in terms of its textural parameters and its radiative properties. Scanning electron microscopy and x-ray µ-tomography were first performed to investigate the 3D texture of the sample at several length scales. Infrared reflectance microscopy was also applied to probe the local optical responses on the struts constituting the foam. Based on the whole set of experimental data, a numerical tool (C++) was implemented to reconstruct virtual SiC foams. A Monte Carlo Ray Tracing code (iMorphRad, C++) was then used to compute the normal spectral emittance for the real SiC foam and for another reconstructed SiC foam with similar textural features. The two numerically determined emittances were then compared with previous infrared spectroscopy experimental measurements. This numerical procedure enables us to propose a methodology for the design of SiC foams with prescribed radiative properties.

Keywords

cellular (material type)optical propertiestexture
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1545: Symposium K – Materials for Sustainable Development , 2013 , mrss13-1545-k01-07
Copyright
Copyright © Materials Research Society 2013 

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