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Comparison and Optimization of Heliostat Canting Methods

Buck, Reiner and Teufel, Edgar (2009) Comparison and Optimization of Heliostat Canting Methods. Journal of Solar Energy Engineering, 131 (1), 011001-1-011001-8. American Society of Mechanical Engineers (ASME). DOI: 10.1115/1.3027500

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Heliostat canting (alignment of mirror facets) is known to have a major influence on the optical efficiency of heliostat fields and therefore on the power output of solar tower plants. In recent years several canting concepts were used, mainly on- and off-axis canting. Several new canting concepts, such as stretched-parabolic or target-aligned canting, were proposed in order to improve the performance of heliostats. As solar power plants become economically more attractive, knowledge about the influence of canting becomes more important. In this context, the influence of several factors on the canting method is discussed and optimal canting strategies are described. The considered factors comprise plant power level, heliostat position in the field, heliostat area, receiver dimension, and site latitude. It is concluded that the target-aligned tracking method is superior to all other variants in the majority of cases. As for the standard azimuth-elevation tracking methods, not one of these exhibits a clear advantage. It is only the on-axis method that performs worst in all cases.

Item URL in elib:https://elib.dlr.de/57696/
Document Type:Article
Title:Comparison and Optimization of Heliostat Canting Methods
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:February 2009
Journal or Publication Title:Journal of Solar Energy Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1115/1.3027500
Page Range:011001-1-011001-8
Publisher:American Society of Mechanical Engineers (ASME)
Keywords:solar, tower, heliostat, canting
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:E SF - Solar research (old)
DLR - Research area:Energy
DLR - Program:E SF - Solar research
DLR - Research theme (Project):E - Solare Hochtemperatursysteme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Engineering Thermodynamics > Solar Research
Deposited By: Buck, Dr.-Ing. Reiner
Deposited On:27 Jan 2009
Last Modified:08 Mar 2018 18:45

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