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OPTICAL CHARACTERISATION OF REFLECTOR MATERIAL FOR CONCENTRATING SOLAR POWER TECHNOLOGY

Meyen, Stephanie and Lüpfert, Eckhard and Pernpeintner, Johannes and Fend, Thomas (2009) OPTICAL CHARACTERISATION OF REFLECTOR MATERIAL FOR CONCENTRATING SOLAR POWER TECHNOLOGY. 15th International SolarPACES Symposium, 15.-18. Sept. 2009, Berlin, Deutschland.

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Abstract

In order to evaluate the quality and suitability of reflector materials for concentrating solar power (CSP) applications a measuring procedure has been developed for the determination of optical key values. These were defined for their relevance in CSP as the solar weighted hemispherical reflectance SWH, the solar weighted direct reflectance SWD within an acceptance angle of interest (25 mrad) and the specular beam diversion spec. After measuring those parameters also on artificially degraded samples, an extensive analysis of the optical material properties and comparative lifetime estimation are provided with the intention to lead to a standardized test method. Evaluation of various reflector material samples demonstrates the superiority of glass mirrors over alternative materials (polymer film, aluminium) in all concerned respects with hemispherical and direct reflectances of almost 0.94 and minimal losses after degradation. The high relevance of spectral properties as well as high mechanical resistance is emphasized.

Document Type:Conference or Workshop Item (Paper)
Title:OPTICAL CHARACTERISATION OF REFLECTOR MATERIAL FOR CONCENTRATING SOLAR POWER TECHNOLOGY
Authors:
AuthorsInstitution or Email of Authors
Meyen, StephanieTT-SF-KP
Lüpfert, EckhardTT-SF-KP
Pernpeintner, JohannesTT-SF-KP
Fend, ThomasTT-SF-KP
Date:15 September 2009
Status:Accepted
Keywords:solar mirror qualification, optical measurement procedure, specular reflectance, hemispherical reflectance, specular beam diversion
Event Title:15th International SolarPACES Symposium
Event Location:Berlin, Deutschland
Event Type:international Conference
Event Dates:15.-18. Sept. 2009
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: Stephanie Meyen
Deposited On:09 Feb 2010 14:39
Last Modified:12 Dec 2013 20:48

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