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    Evaluation of latent heat storage in mortars containing microencapsulated paraffin waxes – a selection of optimal composition and binders

    TitleEvaluation of latent heat storage in mortars containing microencapsulated paraffin waxes – a selection of optimal composition and binders
    Publication TypePapers in International Journals
    Year of Publication2019
    AuthorsLucas S. S., and Aguiar, J. B.
    Abstract

    The application of phase change materials (PCMs) in mortars have been extensively researched, however, most studies are focused in one single binder. Conducting comparative assessments using different binders can facilitate the development of compositions with adequate heat storage and suitable mechanical properties. In this work, several PCM-mortars using cement, lime and gypsum as binders, have been studied using a laboratory simulation that mimicked the day/night temperature changes that the material will be subject during service applications. It has been demonstrated that the addition of PCMs in mortars allows the material to retain heat, indicating that these mortars can have a positive impact on the
    overall energy demand of buildings. There is a combined effect of delay and lowering of temperature peaks, triggered by the heat released from the capsules. The cells with PCMs showed not only a smaller temperature gradient between night and day, but it also exhibited lower peaks. The tests conducted with this laboratory setup prove that PCMs can be successfully mixed into mortars without compromising its durability, hence their applicability as wall renderings.

    JournalHeat and Mass Transfer
    Volume55
    Issue9
    Pagination2429 - 2435
    Date Published2019-10-01
    PublisherSpringer Berlin Heidelberg
    ISSNPrint ISSN 0947-7411 | Online ISSN 1432-1181
    DOI10.1007/s00231-019-02594-1
    KeywordsLatent heat storage, Mortars, Optimal composition, Paraffin waxes
    RightsembargoedAccess (2 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 24 researchers holding a PhD of which 20 are faculty professors of the Civil Engineering Department. Read more


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