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TECHNICAL BRIEFS

Control Strategies for Multistage Solar Collector Systems

[+] Author and Article Information
C. Saltiel

Department of Rehabilitation Medicine, College of Physicians and Surgeons, Columbia University, New York, NY 10032

J. Sol. Energy Eng 110(3), 230-232 (Aug 01, 1988) (3 pages) doi:10.1115/1.3268262 History: Received July 01, 1987; Revised February 01, 1988; Online November 11, 2009

Abstract

A comparative study of the yearly performance of multistage solar collector systems, (comprised of more than one collector type) with a single on/off flow control strategy for all the collectors and separate on/off controls for each collector stage, is performed. Detailed numerical simulations under a range of climatic conditions showed that there is little advantage in using individual collector controls over a single on/off control strategy when the systems operate at low collector thresholds, but differences in system performance can be quite significant at high threshold values. In addition, the choice of the single control strategy (i.e., which collector the strategy is based on) at low thresholds is not critical in terms of system performance.

Copyright © 1988 by ASME
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