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Solar Trough Mirror Shape Specifications

Lüpfert, Eckhard and Ulmer, Steffen (2009) Solar Trough Mirror Shape Specifications. SolarPACES 2009, 15.-18. Sept. 2009, Berlin.

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Official URL: http://www.solarpaces2009.org


The performance of concentrating solar collectors depends to a significant amount on the shape accuracy of the mirrors reflecting the sunlight onto the absorber. For the case of parabolic trough mirrors and on the basis of previous work on shape measurements and ray-tracing, a quality parameter has been defined, that quantifies the average deviation of the reflected beam from the design focal line. It could be demonstrated that application of standard distribution (Gauss distribution) is sufficiently related to derive the performance relevant intercept factor from it. As objective for the glass reflector for high performance trough collectors a typical value for the focus deviation RMS in transversal direction is about 15% of the absorber diameter.

Item URL in elib:https://elib.dlr.de/61693/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Solar Trough Mirror Shape Specifications
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:October 2009
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:parabolic trough, mirror, intercept factor, optical efficiency, deflectometry, shape
Event Title:SolarPACES 2009
Event Location:Berlin
Event Type:international Conference
Event Dates:15.-18. Sept. 2009
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 - Qualifizierung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Engineering Thermodynamics > Solar Research
Deposited By: Lüpfert, Dr.-Ing. Eckhard
Deposited On:08 Feb 2010 16:57
Last Modified:08 Feb 2010 16:57

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