On the Stability of Solar Chemical Particle Receivers

[+] Author and Article Information
H. Ries

Optics and Energy Consulting, Blütenstr. 8, D-080799 München, Germany

H. R. Tschudi

Paul Scherrer Institute, CH-5232 Villigen, Switzerland

W. Spirkl

Sektion Physik, Ludwig-Maximilians-Universitat, Amalienstr. 54, D-80799 München, Germany

J. Sol. Energy Eng 120(2), 96-100 (May 01, 1998) (5 pages) doi:10.1115/1.2888061 History: Received May 01, 1997; Revised January 01, 1998; Online February 14, 2008


We model the decomposition reaction of a solid powder into a solid plus gas in a mixed homogeneous open solar reactor and derive criteria for stability. Instability may occur via a feedback mechanism whereby gas produced in the decomposition reaction reduces the inflow, which leads to even higher reaction rate. For a variety of reactions proposed for solar application, we list the limits of stable operation as the maximum fraction of solid educt in the input carrier gas both for complete as well as for partial decomposition.

Copyright © 1998 by The American Society of Mechanical Engineers
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