High-Flux Solar Absorber Concept for Central Receiver Power Plants

[+] Author and Article Information
B. D. Pomeroy

General Electric Company, Schenectady, N. Y.

J. M. Roberts

General Electric Company, Sunnyvale, Calif.

T. V. Narayanan

Foster Wheeler Development Corp., Livingston, N. J.

J. Sol. Energy Eng 103(1), 52-55 (Feb 01, 1981) (4 pages) doi:10.1115/1.3266210 History: Received October 03, 1979; Revised November 13, 1980; Online November 11, 2009


For cylindrical receivers with a capacity of about 400 MW/t, an aim-at-the-belt focusing strategy can produce average fluxes the order of 0.5 MW/m2 with peaks as high as 2 MW/m2 . An absorber concept is described which uses liquid sodium coolant and a three-header configuration to efficiently capture this solar power. The mechanical design of this absorber is discussed and thermal performance estimates are presented showing the solar-capture efficiency over a range of solar intensities. The sodium-flow characteristics and some potential flow-control problems are also described. A thermal-stress analysis is presented which shows that a limiting factor on the flux capability may be tube-wall creep/fatigue failure and not the heat-transfer capability of sodium.

Copyright © 1981 by ASME
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