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Comparison and Optimization of Heliostat Canting Methods

Buck, Reiner und Teufel, Edgar (2009) Comparison and Optimization of Heliostat Canting Methods. Journal of Solar Energy Engineering, 131 (1), . ASME. DOI: 10.1115/1.3027500.

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Kurzfassung

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.

Dokumentart:Zeitschriftenbeitrag
Titel:Comparison and Optimization of Heliostat Canting Methods
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Buck, ReinerNICHT SPEZIFIZIERT
Teufel, EdgarNICHT SPEZIFIZIERT
Datum:Februar 2009
Erschienen in:Journal of Solar Energy Engineering
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:131
DOI :10.1115/1.3027500
Seitenbereich:
Verlag:ASME
Status:veröffentlicht
Stichwörter:solar, tower, heliostat, canting
HGF - Forschungsbereich:Energie
HGF - Programm:Erneuerbare Energie
HGF - Programmthema:E SF - Solarforschung (alt)
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SF - Solarforschung
DLR - Teilgebiet (Projekt, Vorhaben):E - Solare Hochtemperatursysteme (alt)
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Thermodynamik > Solarforschung
Hinterlegt von: Dr.-Ing. Reiner Buck
Hinterlegt am:27 Jan 2009
Letzte Änderung:07 Feb 2013 20:35

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