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RESEARCH PAPERS

Comparison of a Cavity Solar Receiver Numerical Model and Experimental Data

[+] Author and Article Information
R. E. Hogan

Fluid and Thermal Sciences Department, Sandia National Laboratories, Albuquerque, NM 87185

R. B. Diver

Solar Energy Department, Sandia National Laboratories, Albuquerque, NM 87185

Wm. B. Stine

Mechanical Engineering Department, California State Polytechnic University, Pomona, CA 91768

J. Sol. Energy Eng 112(3), 183-190 (Aug 01, 1990) (8 pages) doi:10.1115/1.2930478 History: Received March 08, 1989; Revised February 12, 1990; Online June 06, 2008

Abstract

Results from a numerical model of axisymmetric solar cavity receivers are compared with experimental data for tests of a novel test bed receiver in the Sandia National Laboratories solar furnace. The computed energy transfer rates and temperatures are compared with the experimental data for different receiver geometries, aperture sizes, and operating conditions. In general, the agreement between the numerical model and the experimental data is better for the small-to-midsized apertures than for the large apertures. The analysis indicates that for the larger apertures, the convective heat losses are over predicted. It also suggests that these losses could be better characterized. Sensitivity analyses show that both the total solar energy input rate and the convective heat-loss coefficient significantly affect the receiver thermal performance and that the distribution of the input solar flux significantly affects the temperature distribution in the receiver.

Copyright © 1990 by The American Society of Mechanical Engineers
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