On-Sun Alignment of a Concentrated Solar Parabolic Dish Located in Abu Dhabi, UAE

Muhammad Abdullah; Brenda Hernández Corona; Mathieu Martins; Nicolas Lopez Ferber; Nicolas Calvet

doi:10.52825/solarpaces.v2i.932

Authors

Muhammad Abdullah Khalifa University of Science and Technology https://orcid.org/0000-0001-8131-3129
Brenda Hernández Corona Khalifa University of Science and Technology
Mathieu Martins Khalifa University of Science and Technology
Nicolas Lopez Ferber Khalifa University of Science and Technology
Nicolas Calvet Khalifa University of Science and Technology

DOI:

https://doi.org/10.52825/solarpaces.v2i.932

Keywords:

Concentrated Solar Parabolic Dish, Alignment, On-Sun Alignment Method, Hydrogen Production, Optical Efficiency

Abstract

Improper alignment is one of the key parameters that affect the performance of a concentrated solar parabolic dish (SPD). The receiver must have a flux distribution that is as uniform as feasible for an SPD to operate at its optimum performance. The aim of this research is to align a SPD from ZED Solar [1], which is recently installed at Khalifa University's Masdar Institute Solar Platform in Abu Dhabi, United Arab Emirates. This dish's future application involves integration with a photo-electrochemical hydrogen production reactor, which demands a multi-aimpoint alignment approach for optimal performance. To facilitate this alignment, the sunspots of all facets are initially aligned within a 200 mm diameter circle around the focal point using the on-sun alignment method. During the alignment, the dish was placed in sun-tracking mode, with all facets covered except the one being aligned. The reflection of the facet on the target was observed using a camera. The facet was adjusted until the aimpoint was oriented in the optimal position. The average time to align one facet, including cleaning, loosening the front nuts, and replacing the covers, was found to be around 15 minutes. The complexity of the bolt mounts, rust on the bolts, and the use of a manlift contributed to the prolonged alignment process. Despite these challenges, the on-sun alignment method proved to be an accurate way of aligning the facets of a concentrated SPD.

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References

ZED Solar. "ZED Solar Pakistan." https://zedsolar.com/ (accessed 26/04, 2024).

Our World in Data. "Global primary energy consumption by source." https://ourworldindata.org/energy (accessed 10/10, 2023).

C. K. Ho, "The Future of Concentrating Solar Power," 2020. [Online]. Available: https://www.osti.gov/servlets/purl/1826448

T. Mancini et al., "Dish-Stirling Systems: An Overview of Development and Status," Journal of Solar Energy Engineering, vol. 125, no. 2, pp. 135-151, 2003, doi: https://doi.org/10.1115/1.1562634.

P. Davenport, J. Martinek, and Z. Ma, "Analysis of Concentrating Solar Thermal System to Support Thermochemical Energy Storage or Solar Fuel Generation Processes," ASME 2019 13th International Conference on Energy Sustainability, no. V001T03A005, 2019, doi: https://doi.org/10.1115/ES2019-3871.

K. Lovegrove and W. S. Csiro, "1 - Introduction to concentrating solar power (CSP) technology," Concentrating Solar Power Technology, pp. 3-15, 2012/01/01/ 2012, doi: https://doi.org/10.1533/9780857096173.1.3.

K. Lovegrove and J. Pye, "Chapter 2 - Fundamental principles of concentrating solar power systems," Concentrating Solar Power Technology (Second Edition), pp. 19-71, 2021/01/01/ 2021, doi: https://doi.org/10.1016/B978-0-12-819970-1.00013-X.

S. Ulmer, T. März, C. Prahl, W. Reinalter, and B. Belhomme, "Automated high resolution measurement of heliostat slope errors," Solar Energy, vol. 85, no. 4, pp. 681-687, 2011/04/01/ 2011, doi: https://doi.org/10.1016/j.solener.2010.01.010.

C. E. Andraka, J. Yellowhair, and B. D. Iverson, "A Parametric Study of the Impact of Various Error Contributions on the Flux Distribution of a Solar Dish Concentrator," ASME 2010 4th International Conference on Energy Sustainability, Volume 2, pp. 565-580, 2010, doi: https://doi.org/10.1115/ES2010-90242.

C. E. Andraka, R. B. Diver, and K. S. Rawlinson, "Improved Alignment Technique for Dish Concentrators," ASME 2003 International Solar Energy Conference, pp. 625-635, 2003, doi: https://doi.org/10.1115/ISEC2003-44088.

R. B. Diver, "Mirror alignment and focus of point-focus solar concentrators," Sandia National Labs., Albuquerque, NM (United States), 1995.

L. Ren, X. Wei, Z. Lu, W. Yu, W. Xu, and Z. Shen, "A review of available methods for the alignment of mirror facets of solar concentrator in solar thermal power system," Renewable and Sustainable Energy Reviews, vol. 32, pp. 76-83, 2014/04/01/ 2014, doi: https://doi.org/10.1016/j.rser.2013.12.006.

ZED Solar. Solar Concentrating Dish - User Manual, 2012.

R. B. Diver, D. E. E. Carlson, F. J. Macdonald, and E. A. Fletcher, "A New High-Temperature Solar Research Furnace," Journal of Solar Energy Engineering, vol. 105, no. 3, pp. 288-293, 1983, doi: https://doi.org/10.1115/1.3266380.

R. B. Diver, "Mirror alignment techniques for point-focus solar concentrators," (in English), 1992, doi: https://doi.org/10.2172/7233191.

J. Blackmon and K. Stone, "Application of the digital image radiometer to optical measurement and alignment of space and terrestrial solar power systems," in the 28 th Intersociety Energy Conversion Engineering Conference, Atlanta, GA, USA, 08/08-13/93, 1993, pp. 563-570.

B. J. Steffen, C. E. Andraka, and R. B. Diver, "Development and Characterization of a Color 2F Alignment Method for the Advanced Dish Development System," ASME 2003 International Solar Energy Conference, pp. 657-663, 2003, doi: https://doi.org/10.1115/ISEC2003-44239.

C. E. Andraka et al., "AIMFAST: Initial Dish System Alignments Results Using Fringe Reflection Methods," in ASME 2011 5th International Conference on Energy Sustainability, 2011, vol. Parts A, B, and C, pp. 695-704, doi: https://doi.org/10.1115/ES2011-54453.