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The Effect of a Naturally Ventilated Roof on the Thermal Behaviour of a Building under Mediterranean Summer Conditions

2020-09Journal article Open access
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datacite.subject.fosCiências Naturais::Ciências da Terra e do Ambiente
datacite.subject.fosEngenharia e Tecnologia::Engenharia do Ambiente
datacite.subject.sdg06:Água Potável e Saneamento
datacite.subject.sdg07:Energias Renováveis e Acessíveis
datacite.subject.sdg09:Indústria, Inovação e Infraestruturas
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
datacite.subject.sdg13:Ação Climática
dc.contributor.authorRamos, João
dc.contributor.authorAires, Luis
dc.date.accessioned2025-09-11T11:00:08Z
dc.date.available2025-09-11T11:00:08Z
dc.date.issued2020-09
dc.description.abstractWith the increasing cost associated with energy consumption, climate change and the greater awareness of the population to issues related to energy and environmental efficiency, energy conservation in buildings has been encouraged, along with the development of several solutions based on a more sustainable construction. Building cooling is the most challenging issue in the Mediterranean climate. The roof is one of the main elements of the building’s opaque envelope, where the choice of materials and the implementation of appropriate passive technologies determine the thermal performance of a building. The present work aims to assess the impact of natural ventilation of a roof cavity on the thermal environment of a dwelling house under Mediterranean summer conditions. An experimental study was developed in a small-scale prototype of a typical dwelling house, comprising a ceramic tile roof with vented eaves and insulated sub-tile panels according to the construction solution of the Humbelino Monteiro SA company. The thermal performance of this roof solution was assessed under real climatic conditions based on continuous measurements of the air velocity inside the air gap, the temperature of the air and the surface temperature of all roof layers. Weather conditions were also monitored continuously. Connected with the heat transfer mechanisms, the obtained temperature and air velocity profiles data were analysed and discussed.eng
dc.description.sponsorshipThis work was financially supported by the Associate Laboratory LSRE-LCM-UID/EQU/50020/2019 and by INESCC-UID/Multi/00308/2019, funded by national funds through FCT/MCTES (PIDDAC).
dc.identifier.citationRamos, J., Aires, L., The Effect of a Naturally Ventilated Roof on the Thermal Behaviour of a Building under Mediterranean Summer Conditions, J. sustain. dev. energy water environ. syst., 8(3), pp 508-519, 2020, DOI: https://doi.org/10.13044/j.sdewes.d7.0297.
dc.identifier.doi10.13044/j.sdewes.d7.0297
dc.identifier.eissn1848-9257
dc.identifier.urihttp://hdl.handle.net/10400.8/14048
dc.language.isoeng
dc.peerreviewedyes
dc.publisherInternational Centre for Sustainable Development of Energy, Water and Environment Systems
dc.relationLaboratory of Separation and Reaction Engineering
dc.relationInstitute for Systems Engineering and Computers at Coimbra
dc.relation.hasversionhttps://www.sdewes.org/jsdewes/pid7.0297
dc.relation.ispartofJournal of Sustainable Development of Energy, Water and Environment Systems
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCeramic tile roof
dc.subjectEnergy performance of buildings
dc.subjectNatural roof ventilation
dc.subjectPassive cooling
dc.subjectExperimental study
dc.subjectSustainable construction
dc.titleThe Effect of a Naturally Ventilated Roof on the Thermal Behaviour of a Building under Mediterranean Summer Conditionseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleLaboratory of Separation and Reaction Engineering
oaire.awardTitleInstitute for Systems Engineering and Computers at Coimbra
oaire.awardURIhttp://hdl.handle.net/10400.8/14046
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FMulti%2F00308%2F2019/PT
oaire.citation.endPage519
oaire.citation.issue3
oaire.citation.startPage508
oaire.citation.titleJournal of Sustainable Development of Energy, Water and Environment Systems
oaire.citation.volume8
oaire.fundingStreamFinanciamento do Plano Estratégico de Unidades de I&D - 2019
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameRamos
person.familyNameIgreja Aires
person.givenNameJoao
person.givenNameLuis Miguel
person.identifier.ciencia-id9C1B-6D62-D143
person.identifier.ciencia-id6C18-E6C2-F582
person.identifier.gsidhttps://scholar.google.com.br/citations?hl=pt-PT&user=7Wv10lIAAAAJ
person.identifier.orcid0000-0002-0700-3787
person.identifier.orcid0000-0003-2052-6045
person.identifier.ridF-4696-2014
person.identifier.scopus-author-id55941486200
person.identifier.scopus-author-id16027706000
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
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With the increasing cost associated with energy consumption, climate change and the greater awareness of the population to issues related to energy and environmental efficiency, energy conservation in buildings has been encouraged, along with the development of several solutions based on a more sustainable construction. Building cooling is the most challenging issue in the Mediterranean climate. The roof is one of the main elements of the building’s opaque envelope, where the choice of materials and the implementation of appropriate passive technologies determine the thermal performance of a building. The present work aims to assess the impact of natural ventilation of a roof cavity on the thermal environment of a dwelling house under Mediterranean summer conditions. An experimental study was developed in a small-scale prototype of a typical dwelling house, comprising a ceramic tile roof with vented eaves and insulated sub-tile panels according to the construction solution of the Humbelino Monteiro SA company. The thermal performance of this roof solution was assessed under real climatic conditions based on continuous measurements of the air velocity inside the air gap, the temperature of the air and the surface temperature of all roof layers. Weather conditions were also monitored continuously. Connected with the heat transfer mechanisms, the obtained temperature and air velocity profiles data were analysed and discussed.
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