High concentration parabolic trough solar collector with novel secondary reflector in the vacuum receiver

Yogesh Bhusal; Bennett Widyolar; Lun Jiang; Jonathan Ferry; Jordyn Brinkley; Roland Winston

doi:10.1117/12.2530584

9 September 2019 High concentration parabolic trough solar collector with novel secondary reflector in the vacuum receiver

Yogesh Bhusal, Bennett Widyolar, Lun Jiang, Jonathan Ferry, Jordyn Brinkley, Roland Winston

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Proceedings Volume 11120, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XVI; 1112004 (2019) https://doi.org/10.1117/12.2530584
Event: SPIE Optical Engineering + Applications, 2019, San Diego, California, United States

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.

Citation Download Citation

Yogesh Bhusal, Bennett Widyolar, Lun Jiang, Jonathan Ferry, Jordyn Brinkley, and Roland Winston "High concentration parabolic trough solar collector with novel secondary reflector in the vacuum receiver", Proc. SPIE 11120, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration XVI, 1112004 (9 September 2019); https://doi.org/10.1117/12.2530584

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KEYWORDS

Receivers

Reflectors

Ray tracing

Solar concentrators

Thermal efficiency

Reflectivity

Geometrical optics

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