Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/80672
Título: | The potential impact of low thermal transmittance construction on the European design guidelines of residential buildings | Autor: | Rodrigues, Eugénio Fernandes, Marco S. Soares, Nelson Gomes, Álvaro Gaspar, Adélio Rodrigues Costa, José J. |
Palavras-chave: | generative design method; dynamic simulation; residential buildings; building geometry; thermal transmittance | Data: | Ago-2018 | Editora: | Elsevier | Projeto: | Ren4EEnIEQ (PTDC/EMS-ENE/3238/2014, POCI-01-0145-FEDER-016760, LISBOA-01-0145-FEDER-016760) PCMs4Buildings - Sistemas com cavidades rectangulares com materiais de mudança de fase para o aproveitamento de energia solar térmica em edifícios SFRH/BPD/99668/2014 |
Título da revista, periódico, livro ou evento: | Energy and Buildings | Resumo: | European countries impose regulations for low thermal transmittance envelopes to improve the buildings' energy efficiency. However, in scientific literature, evidences are surfacing that such low U-values are affecting the validity of traditional design guidelines. The purpose of this paper is to analyze the implications of lowering the envelope U-values. To achieve this, 96000 residential buildings were generated, with random geometries and U-values, and their energy consumption evaluated for eight European locations. The buildings were grouped according to the envelope elements' thermal transmittance and the results statistically analyzed. For each group, six geometry-based indexes were correlated with the energy performance. As U-values decrease, the performance variation amplitude was found to reduce, making the geometry less important. However, in warm/moderate climates, low U-values tend to actually increase the energy consumption and also rise the performance variation, meaning that geometry regains importance. In this case, instead of helping reducing the heating demands, solar exposed windows and compact geometries raise the energy consumption. It is concluded that, for each climate location, there is an ideal U-value range for which the energy demand is low and the geometry effect becomes less significant, thus freeing designers to further explore building forms and window designs. | URI: | https://hdl.handle.net/10316/80672 | ISSN: | 0378-7788 | DOI: | 10.1016/j.enbuild.2018.08.009 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Eng.Mecânica - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
EuropeUValues_manuscript.pdf | 6.37 MB | Adobe PDF | Ver/Abrir |
Citações SCOPUSTM
11
Visto em 11/nov/2022
Citações WEB OF SCIENCETM
10
10
Visto em 2/mai/2023
Visualizações de página
422
Visto em 2/out/2024
Downloads
548
Visto em 2/out/2024
Google ScholarTM
Verificar
Altmetric
Altmetric
Este registo está protegido por Licença Creative Commons