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Designing optical devices based on non-uniform rational Béziers splines

Teufel, Edgar (2014) Designing optical devices based on non-uniform rational Béziers splines. Renewable Energy, 63, pp. 69-75. Elsevier. doi: 10.1016/j.renene.2013.09.001. ISSN 0960-1481.

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Optical system design has a significant impact on solar power plant efficiency. It can be advantageous to be able to very precisely adapt mirror shapes in order to improve energy yield. In this article it is investigated whether it is feasible to use non-uniform rational Béziers splines (NURBS) to describe mirrors. Algorithms and equations to evaluate optical performance by ray tracing are lined out. A parameterization scheme is given that reduces the degrees of freedom to a level suitable for automatic processing. To prove feasibility, a secondary reflector based on a NURBS surface and a compound parabolic concentrator (CPC) are designed for a specific test application and compared to each other. It is found that the suggested design method is feasible on contemporary personal computers and that the NURBS based surface performs well compared to the CPC.

Item URL in elib:https://elib.dlr.de/92232/
Document Type:Article
Title:Designing optical devices based on non-uniform rational Béziers splines
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Teufel, Edgaredgar.teufel (at) dlr.deUNSPECIFIED
Journal or Publication Title:Renewable Energy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.renene.2013.09.001
Page Range:pp. 69-75
Series Name:Elsevier Ltd.
Keywords:Concentrating solar power; Secondary concentrators; Ray tracing; Optical performance
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Systems (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Point-Focusing Systems (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Punktfokussierende Systeme
Deposited By: Uhlig, Tamara
Deposited On:20 Nov 2014 15:59
Last Modified:06 Sep 2019 15:16

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