Mirrors array for a solar furnace: Optical analysis and simulation results

TitleMirrors array for a solar furnace: Optical analysis and simulation results
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2014
AuthorsJafrancesco, D., Sansoni P., Francini F., Contento G., Cancro C., Privato C., Graditi G., Ferruzzi D., Mercatelli L., Sani E., and Fontani D.
JournalRenewable Energy
Volume63
Pagination263-271
ISSN09601481
Keywordsarray, assessment method, Concentrating solar power, Design, Lighting simulation, lightning, Mirrors, numerical model, Optical analysis, Optical design, Optical method, Optical performance, optical property, Optimal solutions, Parabolic mirrors, performance assessment, renewable resource, simulation, Solar applications, Solar energy, Solar furnaces, solar power, Spheres, Spherical mirror
Abstract

The optical design of a concentration system for a solar furnace is studied, proposing several possible solutions. The foreseen use of this solar furnace is to test components and methodologies for solar applications. The analysis assesses and compares the optical performances of several possible configurations. The possibility of employing in a solar furnace an array of off-axis mirrors as primary optics is examined comparing simulations with various diameters and different configurations. In particular the paper compares spherical mirrors, parabolic mirrors with axis inclined with respect to the heliostat rays and a paraboloid with axis parallel to the rays arriving from the heliostat. It proposes an optimal solution, with spherical mirrors on a spherical envelope, which is compared to the heliostat-axis paraboloid. Considering realisation tolerances, mirrors positioning, mirrors pointing and solar divergence effects they equivalently concentrate the sunlight on the receiver. © 2013 Elsevier Ltd.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84885363245&doi=10.1016%2fj.renene.2013.09.006&partnerID=40&md5=3cab64a958bd99d0e969902b21bb9291
DOI10.1016/j.renene.2013.09.006