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Durability Studies of Solar Reflectors Used in Concentrating Solar Thermal Technologies under Corrosive Sulfurous Atmospheres

Garcia-Segura, A. and Fernandez-Garcia, Aranzazu and Buendía-Martinez, Francisco and Ariza, M.J. and Sutter, Florian and Valenzuela, Loreto (2018) Durability Studies of Solar Reflectors Used in Concentrating Solar Thermal Technologies under Corrosive Sulfurous Atmospheres. Sustainability, 10 (3008), pp. 1-13. Multidisciplinary Digital Publishing Institute (MDPI). DOI: 10.3390/su10093008 ISSN 2071-1050

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Abstract

Concentrating solar thermal (CST) technologies are a feasible and promising option to tackle worldwide energy problems. These solar facilities are sometimes located near industrial sites, where their main components—including concentrating solar reflectors—are prone to significant degradation caused by corrosive agents, especially in the presence of sulfurous atmospheres such as H2S and SO2. This paper focuses on analyzing the influence of sulfurous atmospheres on the durability of reflector materials used in CST technologies. To this end, accelerated aging tests were performed on the most commonly used materials found in solar reflectors (i.e., thick silvered glass and aluminum-based reflectors) by applying the same concentrations of H2S and SO2 under the same conditions of temperature and relative humidity. The results showed that the solar reflectors based on a silver reflective layer are significantly corroded by H2S atmospheres—several corrosion defects were found in the samples tested. However, those based on aluminum were barely affected by sulfurous environments in the conditions tested. Nonetheless, the study suggests that both reflector types are suitable candidates, depending on the purpose of the CST technology in question and the specific environmental conditions.

Item URL in elib:https://elib.dlr.de/123344/
Document Type:Article
Title:Durability Studies of Solar Reflectors Used in Concentrating Solar Thermal Technologies under Corrosive Sulfurous Atmospheres
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Garcia-Segura, A.CIEMAT PSAUNSPECIFIED
Fernandez-Garcia, Aranzazuarantxa.fernandez (at) psa.esUNSPECIFIED
Buendía-Martinez, FranciscoCIEMAT PSAUNSPECIFIED
Ariza, M.J.Universidad de AlmeriaUNSPECIFIED
Sutter, FlorianFlorian.Sutter (at) dlr.dehttps://orcid.org/0000-0002-2981-5807
Valenzuela, LoretoCIEMAT-PSAUNSPECIFIED
Date:28 August 2018
Journal or Publication Title:Sustainability
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:10
DOI :10.3390/su10093008
Page Range:pp. 1-13
Publisher:Multidisciplinary Digital Publishing Institute (MDPI)
ISSN:2071-1050
Status:Published
Keywords:renewable energy; concentrating solar thermal technology; solar reflector; durability; corrosive sulfurous atmosphere; industrial environment
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:17 Dec 2018 12:16
Last Modified:14 Dec 2019 04:25

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