The impact of thermal transmittance variation on building design in the Mediterranean region
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
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. |
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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 |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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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 |
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1799133955314679808 |