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Determination of wind loads on heliostats

Pfahl, Andreas and Buselmeier, Michael and Zaschke, Martin (2011) Determination of wind loads on heliostats. In: Proceedings SolarPACES 2011 Granada. SolarPACES conference 2011, 20.-23. Sept. 2011, Granada, Spanien.

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By boundary layer wind tunnel measurements the wind loads on heliostats were investigated for conditions with no or only insufficient values available in literature: • Aspect ratio: For aspect ratios of the mirror plane (width / height) between 0.5 and 3.0 the wind load coefficients were determined. For the critical load cases (combinations of elevation angle and wind direction of highest wind loads) formulas for the calculation of the impact of the aspect ratio were gained. • Wide gap: By measurements of a heliostat with one wide central gap between the mirror facets it turned out that wide gaps are of impact especially on the hinge moment. • Wind fence: The impact of a wind fence at different heliostat field densities was investigated. For low field densities only small load reductions were measured. Future work should investigate the significance of the similarity of the energy spectrum at the critical scales.

Document Type:Conference or Workshop Item (Poster)
Title:Determination of wind loads on heliostats
AuthorsInstitution or Email of Authors
Pfahl, AndreasSF-PN ST
Buselmeier, Michaelm.buselmeier@wacker-ingenieure.de
Zaschke, Martinm.zaschke@wacker-ingenieure.de
Date:September 2011
Journal or Publication Title:Proceedings SolarPACES 2011 Granada
Refereed publication:Yes
In ISI Web of Science:No
Keywords:Keywords: central receiver, solar tower, heliostat, wind load, boundary layer, wind tunnel
Event Title:SolarPACES conference 2011
Event Location:Granada, Spanien
Event Type:international Conference
Event Dates:20.-23. Sept. 2011
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 Solar Research
Deposited By: Andreas Pfahl
Deposited On:16 Dec 2011 16:58
Last Modified:08 May 2014 23:28

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