The Effect of Component Efficiency and Operating Conditions on the 50-kW Dish Stirling System in Riyadh, Saudia Arabia

[+] Author and Article Information
Gerold W. Noyes

Deutsche Forschungsanstalt für Luft- und Raumfahrt, Institut für Technische Thermodynamik, Pfaffenwaldring 38-40, 7000 Stuttgart 80, Federal Republic of Germany

J. Sol. Energy Eng 112(4), 244-246 (Nov 01, 1990) (3 pages) doi:10.1115/1.2929930 History: Received May 03, 1989; Revised August 21, 1990; Online June 06, 2008


This paper deals with the development of a weather data base and the performance prediction of a 50-kW dish Stirling system. An analysis of direct solar insolation data for 1985 from the site in Riyadh, Saudi Arabia was made to determine the available solar energy. A parameter study was done of the effects of component efficiencies and operating conditions on instantaneous and yearly average system efficiency using the prepared weather data. The system performance was found to be most affected by wind, mirror reflectivity, and exact placement of the receiver in the focal point of the mirror.

Copyright © 1990 by The American Society of Mechanical Engineers
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