Operating Thresholds of Solar Collection Systems

[+] Author and Article Information
D. S. Ward

Solar Energy Applications Laboratory, Colorado State University, Fort Collins, CO 80523

J. Sol. Energy Eng 102(1), 66-72 (Feb 01, 1980) (7 pages) doi:10.1115/1.3266124 History: Received September 17, 1979; Online November 11, 2009


A solar collector subsystem operating threshold is defined as the minimum solar insolation rate at which useful heat can be collected when collector loop piping heat losses and parasitic power requirements are considered. This paper discusses the quantitative effect of these energy flows on the operating threshold of the solar subsystem (and thus on the overall system efficiency), and briefly considers the effects of different installation and design procedures.

Copyright © 1980 by ASME
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