Corrosion assessment of promising hydrated salts as sorption materials for thermal energy storage systems

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dc.contributor.authorFernández, Ángel G.
dc.contributor.authorFullana Puig, Margalida
dc.contributor.authorCalabrese, Luigi
dc.contributor.authorPalomba, Valeria
dc.contributor.authorFrazzica, Andrea
dc.contributor.authorCabeza, Luisa F.
dc.date.accessioned2020-02-06T10:02:07Z
dc.date.available2022-01-06T23:17:02Z
dc.date.issued2020
dc.date.updated2020-02-06T10:02:07Z
dc.description.abstractSalt hydrates are an appealing option to be used as sorption materials in thermal energy storage (TES). In this work, strontium bromide and magnesium sulphate have been selected as one of the most promising salt hydrates since they present high energy storage density (>130 kWh/m3) and efficiency (>20%). One of the main drawbacks of sorption materials rely on control the hydratation-dehydratation process but there are other parameters that can modify this behaviour as the corrosive potential of these salts in contact with the container material selected for the application. Hence, four different metal container materials, specifically stainless steel, copper, aluminium, and carbon steel have been tested in SrBr2$6H2O and MgSO4$7H2O hydrate salts, during 100 h at dehydratation conditions. After the gravimetric and micrograph analysis carried out via scanning electron microscopy (SEM) study, only carbon steel is not recommended for this application in contact with SrBr2$6H2O, obtaining a corrosion rate of 0.038 mm/year, with a metallographic corrosion layer thickness of 25.2 mm. Aluminium, copper and stainless steel showed a better corrosion resistance also in SrBr2$6H2O and MgSO4$7H2O with corrosion rates below 0.008 mm/year.
dc.description.sponsorshipThis work was partially funded by the Ministerio de Ciencia, Innovación y Universidades de España (RTI2018-093849-B-C31 - MCIU/AEI/FEDER, UE). The authors would like to thank the Catalan Government for the quality accreditation given to their research group GREiA (2017 SGR 1537). GREiA is a certified agent TECNIO in the category of technology developers from the Government of Catalonia. This work is partially supported by ICREA under the ICREA Academia programme.
dc.format.mimetypeapplication/pdf
dc.identifier.doihttps://doi.org/10.1016/j.renene.2020.01.001
dc.identifier.idgrec029750
dc.identifier.issn0960-1481
dc.identifier.urihttp://hdl.handle.net/10459.1/67955
dc.language.isoeng
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-093849-B-C31/ES/METODOLOGIA PARA EL ANALISIS DE TECNOLOGIAS DE ALMACENAMIENTO DE ENERGIA TERMICA HACIA UNA ECONOMIA CIRCULAR/
dc.relation.isformatofVersió postprint del document publicat a: https://doi.org/10.1016/j.renene.2020.01.001
dc.relation.ispartofRenewable Energy, 2020, vol. 150, p. 428-434
dc.rightscc-by-nc-nd (c) Elsevier, 2020
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleCorrosion assessment of promising hydrated salts as sorption materials for thermal energy storage systems
dc.typeinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/acceptedVersion
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