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Development of a spatially resolved reflectometer to monitor corrosion of solar reflectors

Sutter, Florian and Meyen, Stephanie and Heller, Peter and Pitz-Paal , Robert (2013) Development of a spatially resolved reflectometer to monitor corrosion of solar reflectors. Optical Materials, 35, pp. 1600-1608. Elsevier. ISSN 0925-3467

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Abstract

Solar reflectors for Concentrating Solar Power (CSP)concentrators require a high reflectance and high specularity over the whole solar spectrum. During their lifetime of at least 20 years, the reflectors must withstand harsh outdoor conditions without loosing their reflective properties. Currently, there are not many devices available to measure the specular reflectance. In this work a prototype of a specular reflectometer with spatial resolution has been developed. The major advantage of the prototype compared to other reflectometers is the possibility of measuring the specular reflectance on an extended measuring spot of more than 5 cm in diameter with a spatial resolution of 37 pixel/mm. Additionally, measurements can be taken at three different acceptance half angles (u = 3.5, 6.0, and 12.5 mrad) and at three different wavelengths (k = 410 nm, 500 nm, and 656 nm). This lab scale instrument can be employed to monitor degradation effects, such as corrosion spots, and evaluate their influence on the specular reflectance of solar mirror materials.

Item URL in elib:https://elib.dlr.de/85950/
Document Type:Article
Title:Development of a spatially resolved reflectometer to monitor corrosion of solar reflectors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sutter, FlorianFlorian.Sutter (at) dlr.deUNSPECIFIED
Meyen, StephanieStephanie.Meyen (at) dlr.deUNSPECIFIED
Heller, Peterpeter.heller (at) dlr.deUNSPECIFIED
Pitz-Paal , RobertRobert.Pitz-Paal (at) dlr.deUNSPECIFIED
Date:9 May 2013
Journal or Publication Title:Optical Materials
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:35
Page Range:pp. 1600-1608
Publisher:Elsevier
ISSN:0925-3467
Status:Published
Keywords:Reflectometer, Specular reflectance, Solar reflector, cattering, Corrosion Durability
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 - Qualifizierung (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualifizierung
Deposited By: Kruschinski, Anja
Deposited On:04 Dec 2013 16:45
Last Modified:06 Sep 2019 15:20

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