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Medida de alta irradiancia en receptores de plantas de torre
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Advisor(s)
Abstract(s)
RESUMEN: En este trabajo se expone un nuevo método de medida de alta irradiancia solar en centrales de torre. El método hace uso exclusivamente de un radiómetro y una cámara digital. Antes de realizar los ensayos, se ha efectuado un test de homogeneidad y difusividad a la superficie del receptor. Este test se divide en dos partes, la primera en la que se estudia la homogeneidad de la superficie mediante una imagen, y la segunda en la cual se realiza un estudio de la luminancia en función de diferentes ángulos. Se han presentado los resultados de ensayos realizados con un receptor de reducido tamaño en uno de los hornos solares de la Plataforma Solar de Almería, y la comparación con el método del blanco lambertiano. Los resultados muestran un alto grado de concordancia entre ambos métodos. Por último, se ha efectuado el test de difusividad y se han presentado los resultados para un nuevo prototipo de receptor volumétrico de mayor tamaño, fabricado con copas de carburo de silicio, obteniendo que su superficie se comporta como una superficie lambertiana.
ABSTRACT: In this work, a new method to measure high solar irradiance in tower plants is presented. The method uses only a radiometer and a digital camera. Before carrying out the tests, a homogeneity and diffusivity test has been carried out on the surface of the receiver. This test is divided in two parts, the first one where the homogeneity of the surface is studied with a picture, and the second one where a study of the luminance is carried out according to different angles. The results of the tests that has been done with a small receiver in one of the solar furnaces of the Plataforma Solar de Almería, and the comparison with the white lambertian method, validate the new method. The results show a high degree of agreement between both methods. Finally, the diffusivity test has been done with a new volumetric receiver prototype, with bigger size, and the results show that the surface of the receiver behaves as a lambertian surface.
ABSTRACT: In this work, a new method to measure high solar irradiance in tower plants is presented. The method uses only a radiometer and a digital camera. Before carrying out the tests, a homogeneity and diffusivity test has been carried out on the surface of the receiver. This test is divided in two parts, the first one where the homogeneity of the surface is studied with a picture, and the second one where a study of the luminance is carried out according to different angles. The results of the tests that has been done with a small receiver in one of the solar furnaces of the Plataforma Solar de Almería, and the comparison with the white lambertian method, validate the new method. The results show a high degree of agreement between both methods. Finally, the diffusivity test has been done with a new volumetric receiver prototype, with bigger size, and the results show that the surface of the receiver behaves as a lambertian surface.
Description
CIES2020 - XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar
Keywords
Solar energy Solar concentrated power Solar radiation
Pedagogical Context
Citation
Casanova, M...[et.al.] - Medida de alta irradiancia en receptores de plantas de torre. In: CIES2020: As Energias Renováveis na Transição Energética: Livro de Comunicações do XVII Congresso Ibérico e XIII Congresso Ibero-americano de Energia Solar. Helder Gonçalves, Manuel Romero (Ed.). Lisboa, Portugal: LNEG, 3-5 Novembro, 2020, p. 159-166
Publisher
LNEG - Laboratório Nacional de Energia e Geologia