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Advanced Cyclic Accelerated Aging Testing of Solar Reflector Materials

Wette, Johannes and Sutter, Florian and Tu, Mai and Fernández-García, Aránzazu and Buendía-Martinez, Francisco and Carvalho, M. Joao and Diamantino, Teresa (2019) Advanced Cyclic Accelerated Aging Testing of Solar Reflector Materials. In: AIP Conference Proceedings, 2126 (160007), pp. 1-8. SolarPACES Conference, 2.-5. Oktober 2018, Casablanca, Morocco. DOI: 10.1063/1.5117670 ISBN 978-0-7354-1866-0

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Official URL: https://aip.scitation.org/doi/pdf/10.1063/1.5117670?class=pdf


Realistic lifetime prediction and testing procedures for solar mirrors have been demanded by investors, plant developers and material manufacturers during the last years. It has been proven that most of the commonly used accelerated aging tests, which were adopted from other industries, cannot be correlated to outdoor exposure. This work studies different accelerated aging test sequences and analyzes the produced degradation. The results made it possible to discover the most demanding environmental conditions for the three tested mirror types. The degradation of the mirrors was strongly affected by the share of the Copper Accelerated Salt Spray (CASS, ISO9227) testing time in the cycle. The CASS test was combined with several other aging tests and it was concluded that especially the combination with the UV/humidity test according to ISO16474-3 was harmful for the protective coatings of the tested silvered-glass mirrors. The conclusions from the testing campaign presented in this paper are helpful to design suited comparative accelerated aging testing procedures.

Item URL in elib:https://elib.dlr.de/125634/
Document Type:Conference or Workshop Item (Speech)
Title:Advanced Cyclic Accelerated Aging Testing of Solar Reflector Materials
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Wette, JohannesJohannes.Wette (at) dlr.dehttps://orcid.org/0000-0003-1389-5176
Sutter, FlorianFlorian.Sutter (at) dlr.dehttps://orcid.org/0000-0002-2981-5807
Fernández-García, Aránzazu(CIEMAT)UNSPECIFIED
Buendía-Martinez, FranciscoCIEMAT PSAUNSPECIFIED
Carvalho, M. JoaoLaboratorio Nacional de energia e Geologia LisboaUNSPECIFIED
Diamantino, TeresaLaboratorio Nacional de Energia e Geologia LisboaUNSPECIFIED
Date:26 July 2019
Journal or Publication Title:AIP Conference Proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1063/1.5117670
Page Range:pp. 1-8
Keywords:reflector durability, accelerated aging, lifetime prediction
Event Title:SolarPACES Conference
Event Location:Casablanca, Morocco
Event Type:international Conference
Event Dates:2.-5. Oktober 2018
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:08 Jan 2019 13:02
Last Modified:19 Nov 2019 10:55

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