The Effect of Irradiation Directional Distribution on Absorption in Volumetric Solar Receivers

[+] Author and Article Information
P. Doron, A. Kribus

Department of Environmental Sciences and Energy Research, The Weizman Institute of Science, Rehovot 76100, Israel

J. Sol. Energy Eng 119(1), 68-73 (Feb 01, 1997) (6 pages) doi:10.1115/1.2871849 History: Received May 01, 1995; Revised June 01, 1996; Online February 14, 2008


Volumetric solar absorbers are designed to enable the penetration of radiation deep into the absorber in order to improve the efficiency of the energy transfer from incoming radiation to the working fluid. The design of such absorbers is usually based on the irradiation energy flux distribution. We show that the directional features of the irradiation also affect the absorption characteristics of volumetric absorbers, present criteria for the characterization of directional attributes, and describe a method for their calculation. The significance of the directional data is demonstrated for two types of volumetric absorbers. Receiver design and modeling guidelines are presented.

Copyright © 1997 by The American Society of Mechanical Engineers
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