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TECHNICAL PAPERS

Monte Carlo Radiative Transfer Modeling of a Solar Chemical Reactor for The Co-Production of Zinc and Syngas

[+] Author and Article Information
Stefan Kräupl

Solar Process Technology, Paul Scherrer Institute, CH-5232 Villigen, Switzerland

Aldo Steinfeld

ETH-Swiss Federal Institute of Technology Zurich, Department of Mechanical and Process Engineering, ETH-Zentrum, CH-8092 Zurich, Switzerland.

J. Sol. Energy Eng 127(1), 102-108 (Feb 07, 2005) (7 pages) doi:10.1115/1.1824105 History: Received April 27, 2004; Revised May 05, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Figures

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Scheme of the solar cavity-receiver, positioned on-axis with the solar concentrator and with its aperture at the focal plane
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Variation of the thermal efficiency and zinc production rate with the solar power input for a scaled-up reactor. The parameter is the solar power flux through the reactor aperture: 1000, 1500, and 2000 kW/m2 .
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Apparent absorptivity as a function of surface absorptivity for diffuse and specular reflecting inner walls. The baseline configuration was used. The parameter is the aperture size, raperture=2.0, 3.0, and 4.0 cm.
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Stagnation temperature distribution along the cavity-receiver axis for diffuse and specular reflecting cavity inner walls. The baseline configuration was used for a solar power input of 4 kW. The parameter is the surface absorptivity: α=0.3, 0.5, and 0.8.
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Calculated and measured temperature distribution along the cavity wall. The baseline configuration was used for a solar power input of 1.4 kW.
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Calculated and experimental established thermal efficiency and zinc production rate as a function of temperature, for the baseline configuration

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