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    Papers in International JournalsChapters/ Papers in International BooksChapters/ Papers in National BooksCommunications in International ConferencesCommunications in National ConferencesMSc ThesesBooksProceedingsPatentsTechnical/ Scientific ReportsPhD Theses
    @JournalArticle {2427,
    	title = {Cost-optimal energy efficiency levels are the first steps in achieving cost effective renovation in residential buildings with nearly-zero energy target},
    	journal = {Energy and Buildings},
    	volume = {133},
    	year = {2016},
    	month = {2016-10-13 00:00:00},
    	pages = {724-737},
    	publisher = {Elsevier},
    	abstract = {

    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 buildings{\textquoteright} envelope, giving support to the nZEB definition presented in the current Portuguese thermal regulation.

    }, keywords = {Climatic zones, cost effectiveness, Cost-optimality, energy savings, NZEB, Portugal, residential buildings}, issn = {0378-7788}, doi = {10.1016/j.enbuild.2016.10.017}, url = {http://authors.elsevier.com/sd/article/S037877881631163X }, author = {Ferreira, M. and Almeida, Manuela G. and Rodrigues, A.} }

    About CTAC

    The Centre for Territory, Environment and Construction (CTAC) is a research unit of the School of Engineering of University of Minho (UMinho), recognised by the “FCT – Fundação para a Ciência e Tecnologia” (Foundation for Science and Technology), associated to the Department of Civil Engineering (DEC), with whom it shares resources and namely human resources.

    Currently CTAC aggregates 25 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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    Centro de Território, Ambiente e Construção
    Escola de Engenharia da Universidade do Minho
    Campus de Azurém
    4800-058 Guimarães, Portugal

    Phone: + 351 253 510 200 (517 206)
    Fax: + 351 253 510 217

    Email: geral@ctac.uminho.pt


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