elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Optical performance and weight estimation of a heliostat with ganged facets

Amsbeck, Lars and Buck, Reiner and Pfahl, Andreas and Uhlig, Ralf (2008) Optical performance and weight estimation of a heliostat with ganged facets. Journal of Solar Energy Engineering, 130 (1), 011010-1-011010-3. DOI: 10.1115/1.2804630. ISSN 0199-6231.

Full text not available from this repository.

Official URL: http://asmedl.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JSEEDO000130000001011010000001&idtype=cvips&prog=normal

Abstract

In standard heliostat design, the usual strategy of cost reduction is to increase the mirror area of the heliostats. This not only leads to a reduction of specific drive cost but also to an increase of the torques caused by the wind loads, resulting in higher specific weight and higher specific drive power. These drawbacks are avoided when small heliostats are coupled. At the torque tube heliostat (TTH), the mirrors are mounted on torque tubes to simplify the coupling mechanism for the elevation angle. Ray tracing calculations were done to obtain optimized heliostat configurations and to compare the energy yield of a heliostat field built of 288 m2 TTHs with a conventional heliostat field. To get an idea of the weight reduction potential of the TTH, the dimensions of the torque tubes, the secondary axis tubes, and the mirror support structure were weight optimized via finite element method. The layout criterion was a mean mirror error of 2.5 mrads under wind load and gravity.

Document Type:Article
Title:Optical performance and weight estimation of a heliostat with ganged facets
Authors:
AuthorsInstitution or Email of Authors
Amsbeck, LarsUNSPECIFIED
Buck, ReinerUNSPECIFIED
Pfahl, AndreasUNSPECIFIED
Uhlig, RalfUNSPECIFIED
Date:February 2008
Journal or Publication Title:Journal of Solar Energy Engineering
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:130
DOI:10.1115/1.2804630
Page Range:011010-1-011010-3
Editors:
EditorsEmail
ASME, UNSPECIFIED
ISSN:0199-6231
Status:Published
Keywords:solar power, solar heat, solar tower, central receiver, heliostat
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 Technical Thermodynamics > Solar Research
Deposited By: Lars Amsbeck
Deposited On:10 Jun 2008
Last Modified:27 Apr 2009 14:58

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.