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Proceedings Paper

High concentration parabolic trough solar collector with novel secondary reflector in the vacuum receiver
Author(s): Yogesh Bhusal; Bennett Widyolar; Lun Jiang; Jonathan Ferry; Jordyn Brinkley; Roland Winston
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Paper Abstract

In this research work, the performance of novel secondary concentrator in the vacuum receiver of the parabolic trough collector is investigated. The secondary concentrator is designed, the optical and thermal performance analysis is done analytically and validated numerically by using Finite Element Analysis based computational software. From the initial optical and thermal modeling, it is found that the use of secondary reflector gives the concentration of 53X against the concentration in 20’s X of conventional trough collectors, the optical efficiency of 75% and the thermal efficiency of 60% at 650oC. After the design and analysis, the secondary concentrator is formed to the shape and photogrammetry technique is adopted to validate the optical simulations. In future work, the secondary concentrator and selective coated absorber will be produced and will be packaged inside the vacuum receiver. The installation, testing and commissioning of the full system two-stage concentration parabolic trough collector with novel secondary concentrator will be performed at University of California Merced in 2020.

Paper Details

Date Published: 9 September 2019
PDF: 13 pages
Proc. SPIE 11120, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XVI, 1112004 (9 September 2019); doi: 10.1117/12.2530584
Show Author Affiliations
Yogesh Bhusal, Univ. of California, Merced (United States)
Bennett Widyolar, Univ. of California, Merced (United States)
Lun Jiang, Univ. of California, Merced (United States)
Jonathan Ferry, Univ. of California, Merced (United States)
Jordyn Brinkley, Univ. of California, Merced (United States)
Roland Winston, Univ. of California, Merced (United States)


Published in SPIE Proceedings Vol. 11120:
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XVI
Roland Winston; Eli Yablonovitch, Editor(s)

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