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Influence of gaseous pollutants and their synergistic effects on the aging of reflector materials for concentrating solar thermal technologies

2019Journal article Open access
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dc.contributor.authorGarcía-Segura, A.
dc.contributor.authorFernández-Garcia, Aránzazu
dc.contributor.authorAriza, M. J.
dc.contributor.authorSutter, Florian
dc.contributor.authorCunha Diamantino, Teresa
dc.contributor.authorMartínez-Arcos, L.
dc.contributor.authorReche-Navarro, T. J.
dc.contributor.authorValenzuela, L.
dc.date.accessioned2020-03-18T16:03:49Z
dc.date.available2020-03-18T16:03:49Z
dc.date.issued2019
dc.description.abstractABSTRACT: Concentrating solar thermal technologies have experienced an important boost in the last few years. Besides the production of electricity, they are particularly useful for the supply of industrial process heat. The industrial atmospheres affecting these solar plants typically contain gaseous pollutants that are likely to promote corrosion on the components of the solar facility, specifically solar reflectors, thereby compromising their optimal performance and the overall system efficiency. Seven accelerated aging tests were designed to study the effects of three air pollutants (H2S, SO2 and NO2) on the durability of two commercially available reflector types (silvered glass and aluminum), both in single-gas tests and in multicomponent gas mixtures. Additionally, the same material types were exposed outdoors at five representative polluted sites, including industrial, urban and coastal environments. Reflectance and optical microscope monitoring corroborated which degree of corrosion was developed on a specific type of reflector in the different tests with gaseous pollutants, as well as the synergistic effects of gas combinations. For example, tests with sulfur were harmful for silvered-glass reflectors (up to a total of 16 corrosion spots), whereas aluminum was particularly affected by tests with NO2 (numerous micro spots of around 50 pm size). Moreover, comparisons of the corrosion patterns found in accelerated-aging and outdoor exposures revealed which laboratory test reproduced the different real polluted atmospheres in the most realistic way, which is the main goal of this work. For instance, the degradation found at Site 2 was reproduced by Test NO2+SO2, with an acceleration factor of 27.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGarcía-Segura, A... [et.al.] - Influence of gaseous pollutants and their synergistic effects on the aging of reflector materials for concentrating solar thermal technologies. In: Solar Energy Materials and Solar Cells, 2019, Vol. 200, article nº UNSP 109955pt_PT
dc.identifier.doi10.1016/j.solmat.2019.109955pt_PT
dc.identifier.issn0927-0248
dc.identifier.urihttp://hdl.handle.net/10400.9/3189
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationSOLTERMIN project - ENE2017-83973-Rpt_PT
dc.relationEuropean Union (EU) - 731287pt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.solmat.2019.109955pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectSolar energypt_PT
dc.subjectConcentrating solar thermalpt_PT
dc.subjectOptical propertiespt_PT
dc.subjectSolar reflectancept_PT
dc.subjectDurability testpt_PT
dc.titleInfluence of gaseous pollutants and their synergistic effects on the aging of reflector materials for concentrating solar thermal technologiespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleSolar Energy Materials and Solar Cellspt_PT
oaire.citation.volume200pt_PT
person.familyNameCunha Diamantino
person.givenNameTeresa
person.identifier.ciencia-idA81C-1FE7-1D42
person.identifier.orcid0000-0002-0481-0460
person.identifier.ridG-5063-2017
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication706d0686-58f1-440b-a903-6f57130b962c
relation.isAuthorOfPublication.latestForDiscovery706d0686-58f1-440b-a903-6f57130b962c

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