Improvement of Energy Comprehensive Utilization in a Solar Trough Concentrating PV/T System
Publication: Journal of Energy Engineering
Volume 142, Issue 4
Abstract
To increase power output and outlet fluid temperature from a solar trough concentrating photovoltaic/thermal (CPV/T) system, a system with a solar parabolic trough concentrating PV/T unit as the first stage and a solar trough concentrating collector as the second heating stage was suggested and tested. In the second stage, a metal cavity receiver was employed to collect solar radiation concentrated by the parabolic trough to heat the fluid from the CPV/T unit of the system. The output characteristics of the CPV/T unit with mirrors, and systems with a CPV/T unit of aperture area and a concentrating collector with respective aperture area of 15 and were tested, respectively. Also, the performance of the system with a CPV/T unit of aperture area and a concentrating collector of aperture in the cases of the working fluid being one-pass and continuous circulation through solar cells and cavity receivers were analyzed. The results showed the overall output performance in the one-one flow mode was higher than that in the continuous circulation mode, but the outlet fluid temperature in the latter case was higher, and fluid temperature of 62.8°C in the storage tank of the system was measured after 30 min of operation.
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Acknowledgments
This work is partial fulfillment of funded research programs 51106134, financially supported by the National Natural Science Foundation of China.
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Published In
Journal of Energy Engineering
Volume 142 • Issue 4 • December 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: May 20, 2015
Accepted: Dec 28, 2015
Published online: Mar 3, 2016
Discussion open until: Aug 3, 2016
Published in print: Dec 1, 2016
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