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TECHNICAL BRIEFS

On Optimizing Solar Collectors Orientation Under Daily Nonrandom Cloudiness Conditions

[+] Author and Article Information
M. Segal

Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80523

R. A. Pielke

School of Engineering, University of Colorado, Boulder, CO 80307

Y. Ookouchi

Department of Mechanical and Electrical Engineering, Yatsushiro National College of Technology, Yatsushiro 866, Japan

J. Sol. Energy Eng 110(4), 346-348 (Nov 01, 1988) (3 pages) doi:10.1115/1.3268278 History: Received March 03, 1988; Revised July 11, 1988; Online November 11, 2009

Abstract

Seasonal daily nonrandom cloudiness is typical in many geographical locations. Optimization of flat-plate solar collectors orientation in such situations requires azimuth and tilt modifications from those when daily cloudiness is random. The present study evaluates the significance of optimizing solar radiation gains, while considerating an illustrative case of nonrandom afternoon/morning cloudiness. Results suggest that for fixed flat-plate collectors the related gain in solar energy is practically insignificant. For nonfixed collectors the solar energy gains can be improved on a monthly basis by up to ∼6 percent.

Copyright © 1988 by ASME
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