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Study and Comparison of Naturally-Aged and As-Received Silvered-Glass Reflectors

Lahlou, Radia and Al Naimi, Kholoud and Al Yammahi, Hajer and Wette, Johannes and Sutter, Florian and Fernandez-Garcia, Aranzazu and Armstrong, Peter and Calvet, Nicolas and Shamim, Tariq (2018) Study and Comparison of Naturally-Aged and As-Received Silvered-Glass Reflectors. In: AIP Conference Proceedings, 2033 (230007). SolarPACES 2017, 26.-29. Sep. 2017, Santiago de Chile. DOI: 10.1063/1.5067235

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Official URL: https://aip.scitation.org/doi/10.1063/1.5067235

Abstract

Back-silvered glass mirrors exposed in Abu Dhabi outdoor conditions for 7 years along with corresponding as-received mirrors from the same manufacturing batch which were preserved in a warehouse are analyzed in the present study. The availability of both the as-received mirrors and the exposed ones over a time longer than that in previous studies presents an opportunity to validate accelerated aging tests through comparison with naturally aged mirrors. The exposed mirrors showed substantial reflectance degradation. Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS) was used to characterize both as-received and exposed samples and compare the as-received sample to a reference mirror from the state-of-the-art commercial solar mirrors. The analyses identified 5 possible causes of the rapid degradation observed for the mirrors in question in comparison to the lifetime expectation for commercial solar mirrors. The findings will serve to guide ongoing and future accelerated-aging studies on the same mirrors.

Item URL in elib:https://elib.dlr.de/115436/
Document Type:Conference or Workshop Item (Speech)
Title:Study and Comparison of Naturally-Aged and As-Received Silvered-Glass Reflectors
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lahlou, RadiaMasdar InstituteUNSPECIFIED
Al Naimi, KholoudMasdar InstituteUNSPECIFIED
Al Yammahi, HajerMasdar InstituteUNSPECIFIED
Wette, JohannesJohannes.Wette (at) dlr.dehttps://orcid.org/0000-0003-1389-5176
Sutter, FlorianFlorian.Sutter (at) dlr.deUNSPECIFIED
Fernandez-Garcia, Aranzazuarantxa.fernandez (at) psa.esUNSPECIFIED
Armstrong, PeterMasdar InstituteUNSPECIFIED
Calvet, NicolasMasdar InstituteUNSPECIFIED
Shamim, TariqMasdar InstituteUNSPECIFIED
Date:8 November 2018
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:2033
DOI :10.1063/1.5067235
Status:Published
Keywords:silvered-glass reflectors, comparison
Event Title:SolarPACES 2017
Event Location:Santiago de Chile
Event Type:international Conference
Event Dates:26.-29. Sep. 2017
Organizer:SolarPACES
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Concentrating Solar Thermal Technology
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Impact of Desert Environment
Location: Köln-Porz
Institutes and Institutions:Institute of Solar Research > Qualification
Deposited By: Kruschinski, Anja
Deposited On:20 Nov 2017 14:04
Last Modified:31 Jul 2019 20:12

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