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Volume 10
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10.3390/su10093008
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Article

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

by
Alejandro García-Segura
1,*,
Aránzazu Fernández-García
1,
Francisco Buendía-Martínez
1,
María Jesús Ariza
2,
Florian Sutter
3 and
Loreto Valenzuela
1
1
CIEMAT-Plataforma Solar de Almería, Ctra. Senés, 04200 Tabernas, Almería, Spain
2
Applied Physics Department, Almería University, CITE II-A Building, 04120 La Cañada de San Urbano, Almería, Spain
3
DLR, German Aerospace Center, Institute for Solar Research, Ctra. Senés, km 4, P.O. Box 22, 04200 Tabernas, Almería, Spain
*
Author to whom correspondence should be addressed.
Sustainability 2018, 10(9), 3008; https://doi.org/10.3390/su10093008
Submission received: 30 July 2018 / Revised: 18 August 2018 / Accepted: 18 August 2018 / Published: 24 August 2018
(This article belongs to the Special Issue Sulfur Compounds in a Sustainable World)
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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.
Keywords: renewable energy; concentrating solar thermal technology; solar reflector; durability; corrosive sulfurous atmosphere; industrial environment renewable energy; concentrating solar thermal technology; solar reflector; durability; corrosive sulfurous atmosphere; industrial environment

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MDPI and ACS Style

García-Segura, A.; Fernández-García, A.; Buendía-Martínez, F.; Ariza, M.J.; Sutter, F.; Valenzuela, L. Durability Studies of Solar Reflectors Used in Concentrating Solar Thermal Technologies under Corrosive Sulfurous Atmospheres. Sustainability 2018, 10, 3008. https://doi.org/10.3390/su10093008

AMA Style

García-Segura A, Fernández-García A, Buendía-Martínez F, Ariza MJ, Sutter F, Valenzuela L. Durability Studies of Solar Reflectors Used in Concentrating Solar Thermal Technologies under Corrosive Sulfurous Atmospheres. Sustainability. 2018; 10(9):3008. https://doi.org/10.3390/su10093008

Chicago/Turabian Style

García-Segura, Alejandro, Aránzazu Fernández-García, Francisco Buendía-Martínez, María Jesús Ariza, Florian Sutter, and Loreto Valenzuela. 2018. "Durability Studies of Solar Reflectors Used in Concentrating Solar Thermal Technologies under Corrosive Sulfurous Atmospheres" Sustainability 10, no. 9: 3008. https://doi.org/10.3390/su10093008

APA Style

García-Segura, A., Fernández-García, A., Buendía-Martínez, F., Ariza, M. J., Sutter, F., & Valenzuela, L. (2018). Durability Studies of Solar Reflectors Used in Concentrating Solar Thermal Technologies under Corrosive Sulfurous Atmospheres. Sustainability, 10(9), 3008. https://doi.org/10.3390/su10093008

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