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SOLAR TROUGH MIRROR SHAPE SPECIFICATIONS

Lüpfert, Eckhard and Ulmer, Steffen (2009) SOLAR TROUGH MIRROR SHAPE SPECIFICATIONS. SolarPACES, Berlin, Deutschland.

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Abstract

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.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:SOLAR TROUGH MIRROR SHAPE SPECIFICATIONS
Authors:
AuthorsInstitution or Email of Authors
Lüpfert, EckhardUNSPECIFIED
Ulmer, SteffenUNSPECIFIED
Date:September 2009
Status:Published
Keywords:parabolic trough, mirror, intercept factor, optical efficiency, deflectometry, shape
Event Title:SolarPACES
Event Location:Berlin, Deutschland
Event Type:international Conference
Organizer:SolarPACES
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 Technical Thermodynamics > Solar Research
Deposited By: Dr.-Ing. Steffen Ulmer
Deposited On:19 Feb 2010 18:11
Last Modified:12 Dec 2013 20:53

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