OTSun Project: Development of a Computational Tool for High-Resolution Optical Analysis of Solar Collectors

Pujol-Nadal, Ramon; Martínez-Moll, Víctor; Moià-Pol, Andrea; Cardona, G; Hertel, Daniel; Bonnin, F

doi:10.18086/eurosun.2016.06.04

Cited by 3 publications

(1 citation statement)

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“…Ray-tracing computer programs, which simulate the propagation of light through three-dimensional models of optical systems, have their origin in the 1960s [17,18], but then, since 1970, with the advent of means for rapid computation, it became possible to simulate a wide range of optical phenomena (physical or geometrical) in contexts so diversified as electromagnetism, optics, astronomy, meteorology, environment, or architecture, as revealed in the literature, e.g., References [19][20][21][22][23][24][25]. Consequently, many commercial or free software packages have been developed to deal with this vast domain of topics, for example, CUtrace [26]; OpenRayTrace [27]; OTSun project [28]; Ray Optics Module: an add-on to the COMSOL Multiphysics software [29]; Ray Optics Simulation [30]; Solstice Program [31]; SolTrace [32]; Stellar Software [33]; Tonatiuh [34]; Zemax' OpticStudio [35]. However, these general-purpose computer packages are more complex to use and less pedagogic than a simple computer program specifically designed from scratch to study a limited class of problems.…”

Section: Ray Tracing Simulationmentioning

confidence: 99%

Mathematical Models for Simulation and Optimization of High-Flux Solar Furnaces

Pereira

Fernandes

Rosa

2019

MCA

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High-flux solar furnaces distributed throughout the world have been designed and constructed individually, i.e., on a one-by-one basis because there are several possible optical configurations that must take into account the geographical location and the maximum power to be attained. In this work, three ray-tracing models were developed to simulate the optical paths travelled by sun rays in solar furnaces of high concentration using as an example, the solar furnace SF60 of the Plataforma Solar de Almería, in Spain. All these simulation models are supported by mathematical constructions, which are also presented. The first model assumes a random distribution of sun rays coming from a concentrator with spherical curvature. The second model assumes that a random distribution of parallel rays coming from the heliostat is reflected by a concentrator with spherical curvature. Finally, the third model considers that the random parallel rays are reflected by a concentrator with a paraboloid curvature. The three models are all important in optical geometry, although the paraboloid model is more adequate to optimize solar furnaces. The models are illustrated by studying the influence of mirror positioning and shutter attenuation. Additionally, ray-tracing simulations confirmed the possibility to attain homogenous distribution of flux by means of double reflexion using two paraboloid surfaces.

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