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2 October 2024 Progress towards commercialization of a non-intrusive optical (NIO) method and reflected target non-intrusive assessment (ReTNA) system for measurement of heliostat opto-mechanical errors
Rebecca Mitchell, Tucker Farrell, Devon Kesseli, Guangdong Zhu
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Proceedings Volume PC13132, Nonimaging Optics: Efficient Design for Illumination and Concentration XIX; PC131320F (2024) https://doi.org/10.1117/12.3028301
Event: Optical Engineering + Applications, 2024, San Diego, California, United States
Abstract
Central Tower Concentrating Solar Power (CSP) harnesses heliostats, sun-tracking mirrors, to concentrate sunlight onto a receiver for thermal energy storage. Even slight surface errors in heliostats can lead to substantial performance losses. The National Renewable Energy Laboratory has developed two tools to characterize heliostat optomechanical errors. The first, Non-Intrusive Optical (NIO) technology, employs Uncrewed Aircraft Systems (UAS) to capture outdoor images of mirror reflections, estimating slope, canting, and tracking errors. The second, Reflected Target Non-Intrusive Assessment (ReTNA) System, uses an indoor automated rail system to photograph reflected printed targets with a coded chessboard pattern. Both methods' methodologies have been validated, and efforts are underway to automate and commercialize them, with data collected from commercial heliostats aiding in validation and demonstration.
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Rebecca Mitchell, Tucker Farrell, Devon Kesseli, and Guangdong Zhu "Progress towards commercialization of a non-intrusive optical (NIO) method and reflected target non-intrusive assessment (ReTNA) system for measurement of heliostat opto-mechanical errors", Proc. SPIE PC13132, Nonimaging Optics: Efficient Design for Illumination and Concentration XIX, PC131320F (2 October 2024); https://doi.org/10.1117/12.3028301
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KEYWORDS
Reflection
Commercialization
Digital image processing
Imaging systems
Mirror surfaces
Image processing
Renewable energy
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