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Autonomous light-weight heliostat with rim drives

Pfahl, Andreas and Randt, Michael and Holze, Carsten and Unterschütz, Stefan (2013) Autonomous light-weight heliostat with rim drives. Solar Energy (92), pp. 230-240. Elsevier. DOI: 10.1016/j.solener.2013.03.005 ISSN 0038-092X

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Official URL: http://www.sciencedirect.com/science/article/pii/S0038092X13001023


Several approaches for cost reduction of heliostats, which fit well to each other, are combined to a new heliostat concept to achieve the current challenging cost objectives: The wind loads are reduced by appropriate manipulators which reduces weight and cost of the heliostat structure and the ground anchor foundation. Laminated mirror facets are of high reflectivity and shape accuracy and of low weight. The low weight is advantageous for the dimensioning of the bearings and regarding energy consumption. Energy consumption is further reduced by a highly efficient drive train. Thus, small capacity of the wireless energy supply of the autonomous heliostat is sufficient which reduces significantly its cost. By the combination of horizontal primary axis with rims and winch wheels a cheap and precise solution for the drives was found. Ray tracing calculations show that the losses due to the compromised angle range are negligible. With the new heliostat concept the current cost goals seem to be achievable.

Item URL in elib:https://elib.dlr.de/82362/
Document Type:Article
Title:Autonomous light-weight heliostat with rim drives
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Randt, Michaelrandt (at) trinamic.comUNSPECIFIED
Holze, Carstencarsten.holze (at) machtwissen.deUNSPECIFIED
Unterschütz, Stefanstefan.unterschuetz (at) googlemail.comUNSPECIFIED
Journal or Publication Title:Solar Energy
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.solener.2013.03.005
Page Range:pp. 230-240
Keywords:Wind load reduction; Autonom ous heliostat with rim drives; Sandwich facet; Ground anchor foundation
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 - Punktfokussierende Systeme (old)
Location: Stuttgart
Institutes and Institutions:Institute of Solar Research > Punktfokussierende Systeme
Deposited By: Pfahl, Andreas
Deposited On:23 Jul 2013 11:25
Last Modified:31 Jul 2019 19:40

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