The impact of thermal transmittance variation on building design in the Mediterranean region

Detalhes bibliográficos
Autor(a) principal: Fernandes, Marco
Data de Publicação: 2019
Outros Autores: Rodrigues, Eugénio, Gaspar, Adélio, Costa, José, Gomes, Álvaro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/84844
https://doi.org/10.1016/j.apenergy.2019.01.239
Resumo: Contrarily to what happens in northern European countries, buildings in the Mediterranean region are prone to overheating. Consequently, it is important to better understand the role that the thermal transmittance of the building envelope elements has on air-conditioning consumptions. This paper analyzes the effect of different U-values on building design in the Mediterranean area. 192 000 residential buildings were randomly generated for sixteen distinct locations and the energy consumption was assessed for each. It was found that in northern Mediterranean locations, as U-values decreased, energy consumption also decreased. However, in warmer climates, low thermal transmittances tended to significantly increase energy consumption. Hence, the lower the latitude, the higher the U-values should be, in order to prevent increasing the cooling demands. Additionally, geometry-based indexes were correlated with the building’s energy performance. For high U-values, it was found that bigger buildings worsen the energy performance and larger windows tended to improve it. For low U-values, bigger north-facing windows were beneficial. There is an adequate interval of values for which the geometry has a lower impact, which is wider and higher for lower latitudes, thus meaning that not only does the building performance improve but architects are also freer to explore alternative designs.
id RCAP_e4642bda01ca4bb79c49669f8a4a23e3
oai_identifier_str oai:estudogeral.uc.pt:10316/84844
network_acronym_str RCAP
network_name_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository_id_str 7160
spelling The impact of thermal transmittance variation on building design in the Mediterranean regionGenerative design methodDynamic simulationResidential buildingsBuilding geometryThermal transmittanceMediterranean climatesContrarily to what happens in northern European countries, buildings in the Mediterranean region are prone to overheating. Consequently, it is important to better understand the role that the thermal transmittance of the building envelope elements has on air-conditioning consumptions. This paper analyzes the effect of different U-values on building design in the Mediterranean area. 192 000 residential buildings were randomly generated for sixteen distinct locations and the energy consumption was assessed for each. It was found that in northern Mediterranean locations, as U-values decreased, energy consumption also decreased. However, in warmer climates, low thermal transmittances tended to significantly increase energy consumption. Hence, the lower the latitude, the higher the U-values should be, in order to prevent increasing the cooling demands. Additionally, geometry-based indexes were correlated with the building’s energy performance. For high U-values, it was found that bigger buildings worsen the energy performance and larger windows tended to improve it. For low U-values, bigger north-facing windows were beneficial. There is an adequate interval of values for which the geometry has a lower impact, which is wider and higher for lower latitudes, thus meaning that not only does the building performance improve but architects are also freer to explore alternative designs.Elsevier2019-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/84844http://hdl.handle.net/10316/84844https://doi.org/10.1016/j.apenergy.2019.01.239eng0306-2619https://www.sciencedirect.com/science/article/pii/S0306261919301199Fernandes, MarcoRodrigues, EugénioGaspar, AdélioCosta, JoséGomes, Álvaroinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2021-08-19T11:30:24Zoai:estudogeral.uc.pt:10316/84844Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:06:21.516436Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv The impact of thermal transmittance variation on building design in the Mediterranean region
title The impact of thermal transmittance variation on building design in the Mediterranean region
spellingShingle The impact of thermal transmittance variation on building design in the Mediterranean region
Fernandes, Marco
Generative design method
Dynamic simulation
Residential buildings
Building geometry
Thermal transmittance
Mediterranean climates
title_short The impact of thermal transmittance variation on building design in the Mediterranean region
title_full The impact of thermal transmittance variation on building design in the Mediterranean region
title_fullStr The impact of thermal transmittance variation on building design in the Mediterranean region
title_full_unstemmed The impact of thermal transmittance variation on building design in the Mediterranean region
title_sort The impact of thermal transmittance variation on building design in the Mediterranean region
author Fernandes, Marco
author_facet Fernandes, Marco
Rodrigues, Eugénio
Gaspar, Adélio
Costa, José
Gomes, Álvaro
author_role author
author2 Rodrigues, Eugénio
Gaspar, Adélio
Costa, José
Gomes, Álvaro
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Fernandes, Marco
Rodrigues, Eugénio
Gaspar, Adélio
Costa, José
Gomes, Álvaro
dc.subject.por.fl_str_mv Generative design method
Dynamic simulation
Residential buildings
Building geometry
Thermal transmittance
Mediterranean climates
topic Generative design method
Dynamic simulation
Residential buildings
Building geometry
Thermal transmittance
Mediterranean climates
description Contrarily to what happens in northern European countries, buildings in the Mediterranean region are prone to overheating. Consequently, it is important to better understand the role that the thermal transmittance of the building envelope elements has on air-conditioning consumptions. This paper analyzes the effect of different U-values on building design in the Mediterranean area. 192 000 residential buildings were randomly generated for sixteen distinct locations and the energy consumption was assessed for each. It was found that in northern Mediterranean locations, as U-values decreased, energy consumption also decreased. However, in warmer climates, low thermal transmittances tended to significantly increase energy consumption. Hence, the lower the latitude, the higher the U-values should be, in order to prevent increasing the cooling demands. Additionally, geometry-based indexes were correlated with the building’s energy performance. For high U-values, it was found that bigger buildings worsen the energy performance and larger windows tended to improve it. For low U-values, bigger north-facing windows were beneficial. There is an adequate interval of values for which the geometry has a lower impact, which is wider and higher for lower latitudes, thus meaning that not only does the building performance improve but architects are also freer to explore alternative designs.
publishDate 2019
dc.date.none.fl_str_mv 2019-04-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/84844
http://hdl.handle.net/10316/84844
https://doi.org/10.1016/j.apenergy.2019.01.239
url http://hdl.handle.net/10316/84844
https://doi.org/10.1016/j.apenergy.2019.01.239
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0306-2619
https://www.sciencedirect.com/science/article/pii/S0306261919301199
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
_version_ 1799133955314679808