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dc.contributor.authorO'Grady, Małgorzata
dc.contributor.authorLechowska, Agnieszka A.
dc.contributor.authorHarte, Annette M.
dc.date.accessioned2019-01-11T14:49:37Z
dc.date.issued2018-03-16
dc.identifier.citationO'Grady, Małgorzata, Lechowska, Agnieszka A., & Harte, Annette M. (2018). Application of infrared thermography technique to the thermal assessment of multiple thermal bridges and windows. Energy and Buildings, 168, 347-362. doi: https://doi.org/10.1016/j.enbuild.2018.03.034en_IE
dc.identifier.issn1872-6178
dc.identifier.urihttp://hdl.handle.net/10379/14798
dc.description.abstractA major contribution to the global trend in reducing energy consumption can be made by improving the thermal performance of buildings. Minimization of heat loss via the building envelope is key to maximizing building energy efficiency. The building envelope contains different types of thermal bridging that must be accounted for while assessing the overall building envelope thermal performance. Multiple thermal bridges commonly occur and the distance between them determines the degree to which they interact thermally. To avoid overestimation of the linear thermal transmittance, it is important to account for interaction effects. Complex multiple thermal bridging occurs in window systems. The thermal performance of windows depends not only on the window performance itself but also on its installation into the wall. This study demonstrates an application of the quantitative infrared thermography technique to evaluate the heat lost via multiple thermal bridging. It is shown that using this methodology, the heat loss via multiple thermal bridges can be easily estimated in an existing building envelope, without any knowledge of its internal structure or material properties. For windows, it is demonstrated that jointly assessing the additional heat loss through the window and due to the installation of the window into the wall is a practical way to determine the actual heat loss caused by the presence of a window. A window thermal transmittance or M-value is introduced to quantify the total additional heat loss through the building element due to the presence of the window. The methodology was validated against experimental measurements taken on different specimens in a hot box device. Results from the thermographic analysis also co-related well with results from finite element heat transfer and computational fluid dynamics simulations. (C) 2018 Elsevier B.V. All rights reserved.en_IE
dc.description.sponsorshipThe authors wish to thank the College of Engineering and Informatics, National University of Ireland Galway for providing a Postgraduate Scholarship for the first author. Cracow University of Technology CUT, especially the Head of the Institute, Prof. Jacek Schnotale, and the technician, Eng. Mariusz Rusiecki, for access to the hot box facility and constant assistance during the testing. SIP Energy Ltd., Athenry, Co. Galway, in particular John Moylan, for supplying the test specimens. Enterprise Ireland for Innovation Voucher IV-2014-4203.en_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherElsevieren_IE
dc.relation.ispartofEnergy And Buildingsen
dc.subjectThermal bridgingen_IE
dc.subjectInteraction effectsen_IE
dc.subjectBuilding envelopeen_IE
dc.subjectHeat loss assessmenten_IE
dc.subjectQuantitative thermographyen_IE
dc.subjectWindow heat lossen_IE
dc.subjectEXPERIMENTAL VALIDATIONen_IE
dc.subjectBUILDINGSen_IE
dc.subjectWALLSen_IE
dc.subjectTRANSMITTANCEen_IE
dc.subjectMETHODOLOGYen_IE
dc.titleApplication of infrared thermography technique to the thermal assessment of multiple thermal bridges and windowsen_IE
dc.typeArticleen_IE
dc.date.updated2019-01-08T16:34:48Z
dc.identifier.doi10.1016/j.enbuild.2018.03.034
dc.local.publishedsourcehttps://doi.org/10.1016/j.enbuild.2018.03.034en_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funderCollege of Engineering and Informatics, National University of Ireland, Galwayen_IE
dc.contributor.funderEnterprise Irelanden_IE
dc.description.embargo2020-03-16
dc.internal.rssid14486555
dc.local.contactAnnette M. Harte, Dept. Of Civil Engineering, Civil Engineering Building, Nui Galway. 2732 Email: annette.harte@nuigalway.ie
dc.local.copyrightcheckedYes
dc.local.versionACCEPTED
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