Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/43109

TítuloCost-optimal energy efficiency levels are the first steps in achieving cost effective renovation in residential buildings with nearly-zero energy target
Autor(es)Ferreira, Marco António Pedrosa Santos
Almeida, Manuela Guedes de
Rodrigues, Ana Carlota Rocha Araújo
Palavras-chaveClimatic zones
Cost effectiveness
Cost-optimality
Energy savings
nZEB
Portugal
Residential buildings
Data2016
EditoraElsevier
RevistaEnergy and Buildings
CitaçãoFerreira M., Almeida M. G., Rodrigues A. Cost-optimal energy efficiency levels are the first steps in achieving cost effective renovation in residential buildings with nearly-zero energy target, Energy and Buildings, Vol. 133, pp. 724-737, doi:10.1016/j.enbuild.2016.10.017, 2016
Resumo(s)In Europe, the latest updates in the directive on the energy performance of buildings introduced two fundamental concepts, namely the cost-optimal energy requirements and the nearly-zero energy buildings (nZEB). Although these concepts are related, the cost-optimal is focused on costs while the nZEB prioritise the energy performance and the use of renewable energy harvested on site. To understand how these two concepts can be articulated to potentiate energy savings in the Portuguese building stock, reference buildings representative of the residential building stock were analysed. This allowed comparing the cost-optimal renovation packages with the ones that lead to near the zero energy levels, with the lowest costs. This evaluation clarifies on how far it is possible to go in a cost-effective way on a renovation process when the target is zero energy and helps to pave the way for the national definition of nZEB in building renovation. The results indicate that the transition from the cost-optimality to nZEB may occur in Portugal without major efforts, being possible to integrate both concepts with nZEB being reached by adding renewable energy systems to the cost-optimal levels of the buildingsâ envelope, giving support to the nZEB definition presented in the current Portuguese thermal regulation.
Tipoarticle
URIhttp://hdl.handle.net/1822/43109
DOI10.1016/j.enbuild.2016.10.017
ISSN0378-7788
Versão da editorahttp://authors.elsevier.com/sd/article/S037877881631163X
Arbitragem científicayes
AcessorestrictedAccess
Aparece nas coleções:C-TAC - Artigos em Revistas Internacionais

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