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Accelerated aging tests to selective solar absorber coatings for low temperature applications

2021-10Journal article Open access
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dc.contributor.authorCunha Diamantino, Teresa
dc.contributor.authorGonçalves, Rita
dc.contributor.authorPáscoa, Soraia
dc.contributor.authorAlves, Isabel Nascimento
dc.contributor.authorCarvalho, Maria João
dc.date.accessioned2022-01-05T17:14:42Z
dc.date.available2022-01-05T17:14:42Z
dc.date.issued2021-10
dc.description.abstractABSTRACT: The need of a higher role of solar energy within the energy mix in the coming decades obliges the collectors to increase their performance and reliability. It is demanded that the solar absorbers, as the key component of solar thermal collectors, should be low cost with high efficiency for extended lifetimes under different kinds of environments. Commercially, there are presently two main types of solutions as selective solar absorbers coatings for low temperature applications: coatings obtained by physical vapour deposition (PVD) and by paint coatings (PC). These coatings present different physical and chemical characteristics. Therefore, it is important to know how these commercial coatings degrade over time in different environments. Results obtained with two different PVD coatings and three PC, under different accelerated aging tests, are presented. The aging tests performed included different environmental stress corrosion conditions: temperature, humidity, chlorides, sulfur dioxide and nitrogen oxides. The chlorides and the gases SO2 and NO2 affect distinctly the different selective coatings. Cyclic variation of corrosion promoting gases (sulfur dioxide and nitrogen dioxide), higher humidity, salt spraying and drying seem to be an aging test that reflects the different environments where the solar thermal collectors are exposed. In addition to the contaminants, drying/wetting cycles also play an important role in degradation mechanisms of absorber coatings. So, the international standard ISO 22975-3 needs to be revised to include cyclic conditions with these contaminants.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDiamantino, Teresa C... [et.al.] - Accelerated aging tests to selective solar absorber coatings for low temperature applications. In: Solar Energy Materials and Solar Cells, 2021, Vol. 232, article nº 111320pt_PT
dc.identifier.doi10.1016/j.solmat.2021.111320pt_PT
dc.identifier.eissn1879-3398
dc.identifier.issn0927-0248
dc.identifier.urihttp://hdl.handle.net/10400.9/3672
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.solmat.2021.111320pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMaterialspt_PT
dc.subjectSolar thermal collectorspt_PT
dc.subjectSelective surfacespt_PT
dc.subjectSolar absorver surfacespt_PT
dc.subjectCoatingspt_PT
dc.subjectCorrosionpt_PT
dc.subjectDurability testpt_PT
dc.titleAccelerated aging tests to selective solar absorber coatings for low temperature applicationspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/RECI%2FEMS-ENE%2F0170%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FEMS-ENE%2F0578%2F2014/PT
oaire.citation.titleSolar Energy Materials and Solar Cellspt_PT
oaire.citation.volume232pt_PT
oaire.fundingStreamCOMPETE
oaire.fundingStream9471 - RIDTI
person.familyNameCunha Diamantino
person.familyNameGonçalves
person.familyNamePáscoa
person.familyNameCarvalho
person.givenNameTeresa
person.givenNameRita
person.givenNameSoraia
person.givenNameMaria João
person.identifier.ciencia-idA81C-1FE7-1D42
person.identifier.ciencia-id5D16-10AA-AF4E
person.identifier.ciencia-idAB12-0E87-100E
person.identifier.orcid0000-0002-0481-0460
person.identifier.orcid0000-0003-2425-0234
person.identifier.orcid0000-0002-2015-4547
person.identifier.orcid0000-0001-8763-4847
person.identifier.ridG-5063-2017
person.identifier.ridL-4158-2014
person.identifier.scopus-author-id7201413995
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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