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Título : New device for the simultaneous measurement of diffuse solar irradiance on several azimuth and tilting angles
Autor : Simón Martín, Miguel de
Alonso Tristán, Cristina
González Peña, David
Diez Mediavilla, Montserrat
Publicado en: Solar Energy. 2015, V. 119, p. 370-382
Editorial : Elsevier
Fecha de publicación : sep-2015
ISSN : 0038-092X
DOI: 10.1016/j.solener.2015.06.001
Resumen : A device is proposed for the measurement of diffuse solar irradiance on tilted surfaces pointing-to as well as fixed on the equatorial direction. Most commercial devices are not designed for this purpose. Here, we present a specific design for a system based on a single multi-lobe shadow-ring that allows us to measure diffuse irradiance with several tilted pyranometers – from 60 to 90 degrees from the horizontal plane – and on different azimuth angles. This first prototype allows us to measure in the four cardinal directions. The ring is designed to minimize the covered celestial dome observed by each sensor. Moreover, the complete device needs a very small installation area and its simplicity means it is inexpensive and easy to operate. The measurements have subsequently to be corrected with a geometrical correction factor that takes into account the portion of the sky vault blocked by the shadow-ring. These measurements are essential for estimating solar potential on tilted surfaces – such as building façades – and for improving current anisotropic solar models, among many other applications.
Palabras clave: Solar diffuse irradiance
Shadow-ring
Tilted surfaces
Oriented surfaces
Pyranometer
Building integrated photovoltaic systems
Materia: Ingeniería eléctrica
Electric engineering
Licencia: http://creativecommons.org/licenses/by-nc-nd/4.0/
URI : http://hdl.handle.net/10259/4755
Versión del editor: https://doi.org/10.1016/j.solener.2015.06.001
Aparece en las colecciones: Artículos SWIFT

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