Evaluation of heliostat field global tracking error distributions by Monte Carlo simulations

L. A. Díaz-Félix, M. Escobar-Toledo, J. Waissman, N. Pitalúa-Díaz, C. A. Arancibia-Bulnes*

*Autor correspondiente de este trabajo

Producción científica: Contribución a una revistaArtículo de la conferenciarevisión exhaustiva

13 Citas (Scopus)

Resumen

Several error sources can contribute to the global tracking error of heliostats. These sources can be, for instance, angular offset in the reference position of the tracking mechanisms, imperfect leveling of the heliostat pedestal, lack of perpendicularity between the tracking axes, lack of precise clock synchronization. All these possible errors are characterized by angles that have very specific numerical values for each heliostat in a central receiver installation. However, they are intrinsically random in nature, and the errors in different heliostats are independent from each other. In principle, the overall drift behavior of the heliostats can be characterized by a statistical distribution of tracking errors. This global distribution characterizes the angular deviation of the heliostat normal and is used in ray tracing simulations of heliostat fields. It is usually assumed to be Gaussian, although some authors argue in favor of other types of distributions. In the present work, the dependence of the global tracking error distribution on the above mentioned primary error sources is investigated by means of Monte Carlo simulations. Random values are assumed for the different error parameters, and the resulting global tracking error distributions are evaluated for different times of the year for a heliostat field.

Idioma originalInglés
Páginas (desde-hasta)1308-1317
Número de páginas10
PublicaciónEnergy Procedia
Volumen49
DOI
EstadoPublicada - 2014
EventoInternational Conference on Solar Power and Chemical Energy Systems, SolarPACES 2013 - Las Vegas, NV, Estados Unidos
Duración: 17 sep. 201320 sep. 2013

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