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TECHNICAL PAPERS

Experimental Investigation of a Vortex-Flow Solar Chemical Reactor for the Combined ZnO-Reduction and CH4-Reforming*

[+] Author and Article Information
Stefan Kräupl

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

Aldo Steinfeld

Department of Mechanical and Process Engineering - Institute of Energy Technology, ETH-Swiss Federal Institute of Technology, ETH-Zentrum, CH-8092 Zürich, Switzerlande-mail:aldo.steinfeld@eth.ch

J. Sol. Energy Eng 123(3), 237-243 (Feb 01, 2001) (7 pages) doi:10.1115/1.1384569 History: Received December 01, 2000; Revised February 01, 2001
Copyright © 2001 by ASME
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References

Steinfeld,  A., Frei,  A., Kuhn,  P., and Wuillemin,  D., 1995, “Solarthermal Production of Zinc and Syngas Via Combined ZnO-Reduction and CH4-Reforming Processes,” Int. J. Hydrogen Energy, 20, pp. 793–804.
Werder,  M., and Steinfeld,  A., 2000, “Life Cycle Assessment of the Conventional and Solarthermal Production of Zinc and Synthesis Gas,” Energy (Oxford), 25, pp. 395–409.
Steinfeld,  A., and Spiewak,  I., 1998, “Economic Evaluation of the Solar Thermal Co-Production of Zinc and Synthesis Gas,” Energy Convers. Manage., 39, pp. 1513–1518.
Steinfeld,  A., Larson,  C., Palumbo,  R., and Foley,  M., 1996, “Thermodynamic Analysis of the Co-Production of Zinc and Synthesis Gas Using Solar Process Heat,” Energy (Oxford), 21, pp. 205–222.
Kräupl,  S., and Steinfeld,  A., 2001, “Pulsed Gas Feeding for Stoichiometric Operation of a Gas-Solid Vortex Flow Solar Chemical Reactor,” ASME J. Sol. Energy Eng., 123, pp. 133–137.
Steinfeld,  A., Brack,  M., Meier,  A., Weidenkaff,  A., and Wuillemin,  D., 1998, “A Solar Chemical Reactor for the Co-Production of Zinc and Synthesis Gas,” Energy (Oxford), 23, pp. 803–814.
Haueter,  P., Seitz,  T., and Steinfeld,  A., 1999, “A New High-Flux Solar Furnace for High-Temperature Thermochemical Research,” ASME J. Sol. Energy Eng., 121, pp. 77–80.
Tschudi,  H.-R., and Morian,  G., 2001, “Pyrometric Temperature Measurements in Solar Furnaces,” ASME J. Sol. Energy Eng., 123, pp. 164–170.
Tschudi, H.-R., and Müller, Ch., 1999, “Pyrometric Temperature Measurements in the Solar Furnace,” Paul Scherrer Institut, Scientific Report 1999, Volume V General Energy, pp. 30–31.
Siegel, R., and Howell, J. R., 1992, Thermal Radiation Heat Transfer, Third Edition, Hemisphere Publishing Corp., Washington [etc.].
Fletcher,  E. A., and Moen,  R. L., 1977, “Hydrogen and Oxygen From Water,” Science, 197, pp. 1050–1056.
Schrader, B. (ed.), 1995, Infrared and Raman Spectroscopy-Methods and Applications, VCH, Weinheim [etc.].
Yogev,  A., Kribus,  A., Epstein,  M., and Kogan,  A., 1998, “Solar Tower Reflector Systems: A New Approach for High-Temperature Solar Plants,” Int. J. Hydrogen Energy, 23, pp. 239.

Figures

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Scheme of the improved SynMet vortex-flow solar chemical reactor
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Experimental set-up at PSI’s high flux solar furnace
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h-T diagram of the SynMet process
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Process flow diagram of the SynMet process
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Temperature history during a representative solar run using only Argon flow
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Energy balance for solar runs with Ar flow
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Energy balance for solar runs with ZnO+CH4

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