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    Passive strategies used in Southern Portugal vernacular rammed earth buildings and their influence in thermal performance

    ProjectreVer+
    TitlePassive strategies used in Southern Portugal vernacular rammed earth buildings and their influence in thermal performance
    Publication TypePapers in International Journals
    Year of Publication2019
    AuthorsFernandes J. E. P., Mateus, R., Gervásio H., Silva S. M., and Bragança, L.
    Abstract

    In Portugal, there is a lack of quantitative studies on the thermal performance of earthen buildings. This paper aims at contributing to this research context by studying site-specific strategies, and the thermal performance and comfort conditions of a rammed earth building located in southern Portugal. The study is based on objective and subjective assessments and consists of assessing the hygrothermal conditions, thermal comfort levels and analysing the occupants’ perception regarding thermal sensation. The results showed that the strategies used are closely related to local conditions, mitigating the effects of high summer temperatures and ensuring a good summer thermal performance by passive means alone. During the summer monitoring, results showed that the building stayed most of the time (80%) in Category I (high level of expectation) and the remaining time in Category II, according to the classification method defined by the standard EN15251. During the winter period, the building had the worst performance, being necessary a heating system to guarantee comfort conditions. Additionally, the results showed that the good thermal performance of the case study depended more on the high thermal inertia than on the U-value of the envelope. Limitations and advantages of the use of earthen construction elements are discussed.

    JournalRenewable Energy
    Volume142
    IssueNovember 2019
    Pagination345-363
    Date Published2019-04-19
    PublisherElsevier
    ISSN0960-1481
    DOI10.1016/j.renene.2019.04.098
    URLhttps://www.sciencedirect.com/science/article/pii/S0960148119305828
    Keywordsbioclimatic, Indoor comfort evaluation, Passive cooling strategies, Rammed earth, Thermal performance, Vernacular earthen architecture
    Citation

    Fernandes J, Mateus R, Gervásio H, Silva SM, Bragança Luís, Passive strategies used in Southern Portugal vernacular rammed earth buildings and their influence in thermal performance, Renewable Energy (2019), doi: https://doi.org/10.1016/j.renene.2019.04.098

    RightsembargoedAccess (3 Years)
    Peer reviewedyes
    Statuspublished
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    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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