Aluminum Remelting using Directly Solar-Heated Rotary Kilns

[+] Author and Article Information
Karl-Heinz Funken, Martin Roeb, Peter Schwarzboezl, Heiko Warnecke

Deutsches Zentrum für Luft-und Raumfahrt e.V.-German Aerospace Center (DLR), Solar Energy Technology Division, D-51147 Cologne, Germany

J. Sol. Energy Eng 123(2), 117-124 (Jan 01, 2001) (8 pages) doi:10.1115/1.1355242 History: Received August 01, 2000; Revised January 01, 2001
Copyright © 2001 by ASME
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Development of the European aluminum production (1. absolute values: bar diagram and left axis; 2. quota: line graph and right axis) 1213
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Development of the world-wide aluminum production (1. absolute values: bar diagram and left axis; 2. quota: line graph and right axis) 1213
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Primary and secondary aluminum production at different regions/countries 1213
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Development of use of aluminum in the automotive industry in Germany (1. total: bar diagram and left axis; 2. mass of aluminum per car: line graph and right axis) 17
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Scheme of the solar heated rotary kiln
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Discharge of solar molten aluminum
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Effect of varied aperture diameter on receiver efficiency and acceptance angle
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Geometry of the solar plant configuration (side view)
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Cosine losses at solar noon for various tower heights and terrain slopes
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Reflection angles. (+,×: heliostat centers on terrain with 0% and 5% slope.)
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Blocking and shading factor for different slopes and times of day
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Receiver thermal power at solar noon for different configurations.
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Heliostat field for rotary kiln central receiver system



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