Radiation heat transfer within a high-temperature solar thermochemical reactor that features two cavities in series is considered. The inner cavity is subjected to concentrated solar radiative power entering through a spectrally selective window positioned at its aperture. The outer cavity is a well-insulated enclosure containing the inner cavity. It serves as the reaction chamber and is subjected to thermal radiation emitted from the inner cavity. A radiation heat transfer analysis based on the radiosity enclosure theory is formulated and solved using the gray-band approximation for the selective (quartz) window. Energy absorption efficiencies and temperatures are determined and compared to the windowless case.
Radiative Exchange Within a Two-Cavity Configuration With a Spectrally Selective Window
Contributed by the Solar Energy Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division, Aug. 2003; final revision, Nov. 2003. Associate Editor: R. Pitz-Paal.
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Z’Graggen , A., and Steinfeld , A. (May 4, 2004). "Radiative Exchange Within a Two-Cavity Configuration With a Spectrally Selective Window ." ASME. J. Sol. Energy Eng. May 2004; 126(2): 819–822. https://doi.org/10.1115/1.1643751
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