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Thermal characterisation of traditional wall solution of built heritage using the simple hot box-heat flow meter method: In situ measurements and numerical simulation

2020Journal article Restricted access
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dc.contributor.authorRoque, Eduardo
dc.contributor.authorVicente, Romeu
dc.contributor.authorAlmeida, Ricardo M.S.F.
dc.contributor.authorSilva, J.A. Mendes da
dc.contributor.authorFerreira, Ana Vaz
dc.date.accessioned2020-06-30T10:53:33Z
dc.date.available2020-06-30T10:53:33Z
dc.date.issued2020
dc.description.abstractImproving the thermal performance of the historic building stock has the potential to revitalise these buildings and reduce the operational energy share. To achieve that, the first requirement should be to identify and clearly characterise the building stock. However, currently, there is a lack of knowledge regarding the thermal behaviour of traditional wall solutions, and, consequently, energy auditors often use assumptions and simplifications to predict it. Wrong estimations or excessive simplifications may have a severe impact on the thermal behaviour assessment and consequently on the effectiveness of the retrofitting measures. In the scope of buildings thermal comfort and energy efficiency, the thermal resistance of both the external and internal envelope is one of the most relevant parameters for the characterisation of building elements. This work investigates the in situ thermal resistance of a traditional wall solution (“tabique” wall) of a historic building located in the north region of Portugal. The Simple Hot Box - Heat Flow Meter Method (SHB-HFM), based on the procedure described in the standard ISO 9869, is considered in the present study and its applicability to heterogeneous traditional wall solutions is discussed. The importance of controlling the radiative part of the heat transfer onto the measuring sensors is highlighted, and new development to the method is proposed in this paper via the introduction of a baffle inside the SHB. Furthermore, a finite element computer model of the case study was developed in order to ensure that some important premises allowing improving the accuracy of the final results were achieved during the measurement period as well as to enhance the robustness of the obtained conclusions. The achieved results contribute to explore the applicability of the SHB-HFM to highly heterogeneous constructive solutions present in historic buildings, where the traditional HFM method may not be applicable. In addition, this research also aims to better understand the thermal behaviour of “tabique” walls, upon which the available information is scarce. The experimental measurements and numerical simulation results present a good agreement, and an R-value of 0.56 m2 °C W−1 is measured and computed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationROQUE, Eduardo [et al.] (2020) - Thermal characterisation of traditional wall solution of built heritage using the simple hot box-heat flow meter method: In situ measurements and numerical simulation. Applied Thermal Engineering. ISSN: 1359-4311. Vol 169. DOI 10.1016/j.applthermaleng.2020.114935pt_PT
dc.identifier.doi10.1016/j.applthermaleng.2020.114935pt_PT
dc.identifier.issn1359-4311
dc.identifier.urihttp://hdl.handle.net/10400.11/7166
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S1359431119368048?via%3Dihubpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subject“Tabique” wallpt_PT
dc.subjectHot boxpt_PT
dc.subjectHeat flow meterpt_PT
dc.subjectR-valuept_PT
dc.subjectNumerical simulationpt_PT
dc.subjectIn situ measurementspt_PT
dc.titleThermal characterisation of traditional wall solution of built heritage using the simple hot box-heat flow meter method: In situ measurements and numerical simulationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage114935pt_PT
oaire.citation.titleApplied Thermal Engineeringpt_PT
oaire.citation.volume169pt_PT
person.familyNameVaz Ferreira
person.givenNameAna Teresa
person.identifier.ciencia-idFF13-36C3-FA08
person.identifier.orcid0000-0001-7722-2806
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc8cac0d1-de93-4399-b41f-8990692fd63d
relation.isAuthorOfPublication.latestForDiscoveryc8cac0d1-de93-4399-b41f-8990692fd63d

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