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TECHNICAL PAPERS

Two-Dimensional Axi-Symmetric Model of a Solar-Thermal Fluid-Wall Aerosol Flow Reactor

[+] Author and Article Information
Jaimee K. Dahl, Alan W. Weimer

Department of Chemical and Biological Engineering, ECCH 111, Campus Box 424, University of Colorado, Boulder, CO 80309-0424

Andreas Z’Graggen, Aldo Steinfeld

Department of Mechanical and Process Engineering, ETH-Swiss Federal Institute of Technology, 8092 Zurich, Switzerland and Paul Scherrer Institute, CH-5232 Villigen, Switzerland

J. Sol. Energy Eng 127(1), 76-85 (Feb 07, 2005) (10 pages) doi:10.1115/1.1824108 History: Received May 01, 2004; Revised May 27, 2004; Online February 07, 2005
Copyright © 2005 by ASME
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References

Dahl,  J. K., Buechler,  K. J., Weimer,  A. W., Lewandowski,  A., and Bingham,  C., 2004, “Solar-Thermal Dissociation of Methane in a Fluid-Wall Aerosol Flow Reactor,” Int. J. Hydrogen Energy 29(7), pp. 725–736.
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Figures

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Schematic of solar-thermal fluid-wall aerosol flow reactor
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Geometry of outer annulus and quartz tube model
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Temperature profiles of annulus region, quartz tube, and ambient air for argon fed into annulus with an initial velocity of 0.45 m/s
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Temperature profiles of annulus region, quartz tube, and ambient air for argon fed into annulus with an initial velocity of 0.01 m/s
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Temperature profiles of annulus region, quartz tube, and ambient air for hydrogen
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Temperature profiles of annulus region, quartz tube, and ambient air for hydrogen fed into annulus with an initial velocity of 0.01 m/s
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Geometry of fluid-wall reactor including solid graphite tube wall, annulus between solid and porous graphite tubes, porous tube wall, and core
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Velocity profile for gas flow through the porous wall for Run A
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Gas temperature profile for Run A
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Velocity profile for gas flow through the porous wall for Run C, where the wall permeability is set as a function of z
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Velocity profile for gas flow through the porous wall for Run F, where the annular gas inlet temperature is increased over the base case
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Temperature profile for Run B, where hydrogen is fed into the core and annulus domains
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Velocity profile for gas flow through the porous wall for Run I, where the annular gas inlet temperature is increased over the hydrogen base case

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