Repository logo
 
Publication

Novel solar absorber surfaces with organic pigments

2008-10-07Conference object Open access
Simple item page
dc.contributor.authorNunes, Clarisse
dc.contributor.authorBrites, Maria João
dc.contributor.authorMendes, J. Farinha
dc.contributor.authorPrates, Manuel João Lopes
dc.contributor.authorAlexandre, J.
dc.contributor.authorFerreira, M.
dc.contributor.authorMartins, A. J.
dc.contributor.authorTeixeira, V.
dc.contributor.authorCarneiro, V.
dc.contributor.authorCarvalho, Maria João
dc.date.accessioned2010-06-24T15:30:51Z
dc.date.available2010-06-24T15:30:51Z
dc.date.issued2008-10-07
dc.description.abstractThis paper presents results of application of natural and synthetic organic pigments in selective solar absorber coatings. Some of these photo excite pigments were tested like solar radiation absorber pigments in paint coatings and others as a form to increase the absorption of solar radiation in titanium oxide monolayer selective coatings produced by reactive magnetron sputtering. Morphologic aspects and optical properties are discussed as a function of deposition parameters and of formulation parameters. The main goal is to prepare solar absorber surfaces as a tandem of TiOx thin films, organic pigment using a conductive substrate or of paint with organic and/or inorganic pigments and conductive substrate, all reaching great photo thermal conversion efficiency, high durability and low costs to the ending product and stability at medium range temperatures (120-150ºC). The best optical properties for titanium oxide sputtered films were 88% for solar absorption, with 7% of emissivity for deposition parameters of: pulsed frequency 200kHz, reverse time of 0.4μs, discharge current of 0.7A, argon flow rate of 50ml/min and oxygen flow rate changing from 0 to 2.5ml/min. The results obtained with paints were not satisfactory. The best couple values for solar absorption and emissivity were respectively 94%, and 74%pt
dc.identifier.citationNunes, C.; Brites, M. J.; Mendes, J. F.; Prates, M. J. Lopes; Alexandre, J.; Ferreira, M.; Martins, A. J.; Teixeira, V.; Carneiro, V.; Carvalho, M. J. Novel solar absorber surfaces with organic pigments. In; Eurosun 2008 - 1st International Conference on Solar Heating, Cooling and Buildings, Lisbon, Portugal, October 7 - 10, 2008pt
dc.identifier.urihttp://hdl.handle.net/10400.9/721
dc.language.isoengpt
dc.subjectRenewable energiespt
dc.subjectSolar absorberpt
dc.titleNovel solar absorber surfaces with organic pigmentspt
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceLisbonpt
oaire.citation.titleEurosun 2008 - 1st International Conference on Solar Heating, Cooling and Buildingspt
person.familyNameBrites
person.familyNameCarvalho
person.givenNameMaria João de Sousa
person.givenNameMaria João
person.identifier.ciencia-id6710-13F6-3011
person.identifier.ciencia-idAB12-0E87-100E
person.identifier.orcid0000-0002-1081-7191
person.identifier.orcid0000-0001-8763-4847
person.identifier.ridL-4158-2014
person.identifier.scopus-author-id7201413995
rcaap.rightsopenAccesspt
rcaap.typeconferenceObjectpt
relation.isAuthorOfPublicationafcf1d4c-fc7e-4486-b0f4-58f27acc6834
relation.isAuthorOfPublication612ce7fe-326e-4d96-be54-3b1aa9e64e71
relation.isAuthorOfPublication.latestForDiscoveryafcf1d4c-fc7e-4486-b0f4-58f27acc6834

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
NOVELSOLARABSOR.pdf
Size:
507.95 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.8 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ES - Comunicações em actas de encontros científicos internacionais