27 September 2016 Sensitivity analysis in the test of a parabolic trough solar collector (PTSC) with flat null-screens
Author Affiliations +
In this work we proposed a flat null-screen method to test parabolic trough solar collectors (PTSC). The null-screen testing method measures the slope of the test surface and by a numerical integration procedure the shape of the test surface can be obtained. In this work, we show that the test can be sensitive to small surface deformations, such as those caused by sinusoidal deformations with different amplitudes and spatial periods introduced on the PTSC surface. These calculations also show that the attainable theoretical slope accuracy in the rms sense is about 0.34 mrad. This value was obtained under the assumption that is possible to achieve a 1-pixel resolution on the measurement of the position departures of the centroids of the targets of the null-screen.
Conference Presentation
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Manuel Campos-García, Manuel Campos-García, Oliver Huerta-Carranza, Oliver Huerta-Carranza, José Rufino Díaz-Uribe, José Rufino Díaz-Uribe, Víctor Iván Moreno-Oliva, Víctor Iván Moreno-Oliva, Agustín Santiago-Alvarado, Agustín Santiago-Alvarado, Andrés Peña-Conzueloa, Andrés Peña-Conzueloa, } "Sensitivity analysis in the test of a parabolic trough solar collector (PTSC) with flat null-screens", Proc. SPIE 9951, Optical System Alignment, Tolerancing, and Verification X, 99510M (27 September 2016); doi: 10.1117/12.2238287; https://doi.org/10.1117/12.2238287

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