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dc.contributor.authorTorres Quezada, Jefferson
dc.contributor.authorPagès Ramon, Anna
dc.contributor.authorCoch Roura, Helena
dc.contributor.authorIsalgué Buxeda, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.date.accessioned2017-03-27T13:10:38Z
dc.date.issued2016
dc.identifier.citationTorres-Quezada, J., Pages-Ramon, A., Coch, H., Isalgue, A. Radiative performance assessment of two roofs in Mediterranean and Equatorial climates. A: International Conference on Urban Physics. "FICUP 2016: First International Conference on Urban Physics: proceedings". Quito: United Nations Development Programme, 2016, p. 337-348.
dc.identifier.isbn978-9942-951-53-3
dc.identifier.urihttp://hdl.handle.net/2117/102915
dc.description.abstractIn regions where the roof surface is the most exposed to solar radiation, the reduction of the heat flux transmitted through this element has a great impact on the cooling demand of buildings. Studying the possibilities of reducing cooling loads can highly influence the environmental and carbon footprint of the building stock worldwide. Although the main strategy to prevent solar access would be implementing shading systems, another approach could be taking advantage of the radiative cooling effect of the roof itself. Its efficiency depends on the roof properties (color, mass, thermal transmittance, etc) and on climate conditions (radiation, wind, humidity, etc). This paper deals with a comparative assessment of the radiative performance of two roofs exposed to different amounts of solar radiation depending on their percentage of cloudiness, and the repercussions over its surface temperature. Its aims is to evaluate the effect of radiative cooling depending on the local climates. Temperatures of two similar roofs, in Terrassa 41°33´LN (Spain) and in Santa Rosa 3°27´LS (Ecuador), were measured. Their transmittance, optical and thermal mass properties were considered in the calculations. The results obtained indicate that the effect of using the sky as a heat sink has a higher impact on the roof located in Terrassa (Spain) than the one in Santa Rosa (Ecuador). The results support that this behavior responds to the influence of the high presence of cloudiness on equatorial climates, which reduces significantly the heat losses in long wave radiation. The heat mass storage capacity of the roof could hinder even more the radiative cooling effect of the roof.
dc.format.extent12 p.
dc.language.isoeng
dc.publisherUnited Nations Development Programme
dc.subjectÀrees temàtiques de la UPC::Edificació::Construcció sostenible
dc.subject.lcshInsulation (Heat)
dc.subject.otherRadiative cooling
dc.subject.otherRoof surface temperature
dc.subject.otherSky temperature
dc.titleRadiative performance assessment of two roofs in Mediterranean and Equatorial climates
dc.typeConference report
dc.subject.lemacAïllament tèrmic
dc.contributor.groupUniversitat Politècnica de Catalunya. AIEM - Arquitectura, energia i medi ambient
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
drac.iddocument19812971
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO/1PE/BIA2013-45597-R
dc.date.lift10000-01-01
upcommons.citation.authorTorres-Quezada, J., Pages-Ramon, A., Coch, H., Isalgue, A.
upcommons.citation.contributorInternational Conference on Urban Physics
upcommons.citation.pubplaceQuito
upcommons.citation.publishedtrue
upcommons.citation.publicationNameFICUP 2016: First International Conference on Urban Physics: proceedings
upcommons.citation.startingPage337
upcommons.citation.endingPage348


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