Thermal Modeling of a Small-Particle Solar Central Receiver

[+] Author and Article Information
Fletcher J. Miller

National Center for Microgravity Research*, NASA Glenn Research Center, MS 110-3, Cleveland, Ohio 44135-3191e-mail: fletcher@grc.nasa.gov

Roland W. Koenigsdorff

University of Applied Sciences at Biberach*, Karlstr. 9-11, D-88400 Biberach, Germanye-mail: koenigsdorff@fh-biberach.de

J. Sol. Energy Eng 122(1), 23-29 (Feb 01, 2000) (7 pages) doi:10.1115/1.556277 History: Received June 01, 1998; Revised February 01, 2000
Copyright © 2000 by ASME
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Small-particle cavity receiver. Incident radiation is parallel to the y-axis, flow is parallel to the z-axis.
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Radiation differential volume used to derive the six-flux equations
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Receiver divided into control volumes: (a) top view; (b) side view (looking at window). Dots are grid points, dashed lines are control volume boundaries.
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Receiver efficiency vs. mass flow rate. Also shown is the receiver coupled to a Carnot cycle which results in an optimum flow rate.
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Heating profiles for three locations in the receiver




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