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Modeling of Drift Effects on Solar Tower Concentrated Flux Distributions


Affiliations
1 Departamento de Ingenieria Industrial, Universidad de Sonora, Boulevard Encinas y Rosales s/n, Colonia Centro, 83000 Hermosillo, SON, Mexico
2 Instituto de Energias Renovables, Universidad Nacional Autonoma deMexico, Privada Xochicalco s/n, 62580 Temixco, MOR, Mexico
 

A novel modeling tool for calculation of central receiver concentrated flux distributions is presented, which takes into account drift effects. This tool is based on a drift model that includes different geometrical error sources in a rigorous manner and on a simple analytic approximation for the individual flux distribution of a heliostat. The model is applied to a group of heliostats of a real field to obtain the resulting flux distribution and its variation along the day. The distributions differ strongly from those obtained assuming the ideal case without drift or a case with a Gaussian tracking error function. The time evolution of peak flux is also calculated to demonstrate the capabilities of the model. The evolution of this parameter also shows strong differences in comparison to the case without drift.
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  • Modeling of Drift Effects on Solar Tower Concentrated Flux Distributions

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Authors

Luis O. Lara-Cerecedo
Departamento de Ingenieria Industrial, Universidad de Sonora, Boulevard Encinas y Rosales s/n, Colonia Centro, 83000 Hermosillo, SON, Mexico
Isaias Moreno-Cruz
Instituto de Energias Renovables, Universidad Nacional Autonoma deMexico, Privada Xochicalco s/n, 62580 Temixco, MOR, Mexico
Nun Pitalua-Diaz
Departamento de Ingenieria Industrial, Universidad de Sonora, Boulevard Encinas y Rosales s/n, Colonia Centro, 83000 Hermosillo, SON, Mexico
Camilo A. Arancibia-Bulnes
Instituto de Energias Renovables, Universidad Nacional Autonoma deMexico, Privada Xochicalco s/n, 62580 Temixco, MOR, Mexico

Abstract


A novel modeling tool for calculation of central receiver concentrated flux distributions is presented, which takes into account drift effects. This tool is based on a drift model that includes different geometrical error sources in a rigorous manner and on a simple analytic approximation for the individual flux distribution of a heliostat. The model is applied to a group of heliostats of a real field to obtain the resulting flux distribution and its variation along the day. The distributions differ strongly from those obtained assuming the ideal case without drift or a case with a Gaussian tracking error function. The time evolution of peak flux is also calculated to demonstrate the capabilities of the model. The evolution of this parameter also shows strong differences in comparison to the case without drift.