THERMAL SCIENCE

International Scientific Journal

PERFORMANCE COMPARISION OF A NEW-TYPE TROUGH SOLAR CONCENTRATOR THERMAL SYSTEM IN DIFFERENT INSTALLATIONS

ABSTRACT
This paper puts forward a new-type trough solar concentrator with a compound surface, which is comprised of two upper paraboloids, lower planar mirrors and one base paraboloid. This structure forms a co-focus where a solar receiver is installed. The performance of the new-type trough solar concentrator combined with a cylinder receiver and a flat plate receiver, respectively, was tested. For comparison, the reflector of the concentrator was made of a polished aluminum sheet and a mirror glass, respectively. The experimental results show that the prototype concentrator systems may have an average efficiency around 40% for the hot water temperature up to 80°C and the ambient temperature below 0°C in winter. To test and verify the performance of the system in higher temperature range, a scaled-down new concentrator of the same structure was made and tested in the outdoor. It was found from the results that the designed new-type trough concentrator can produce 220°C solar heat. It indicates that the proposed design may be promising for solar thermal application at a medium temperature of 80°C -150°C.
KEYWORDS
PAPER SUBMITTED: 2014-01-27
PAPER REVISED: 2014-11-18
PAPER ACCEPTED: 2014-12-18
PUBLISHED ONLINE: 2015-01-24
DOI REFERENCE: https://doi.org/10.2298/TSCI140127001C
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2015, VOLUME 19, ISSUE Supplement 2, PAGES [S535 - S545]
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© 2019 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence