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dc.contributor.authorTejedor Herrán, Blanca
dc.contributor.authorCasals Casanova, Miquel
dc.contributor.authorGangolells Solanellas, Marta
dc.contributor.authorRoca Ramon, Xavier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
dc.identifier.citationTejedor, B., Casals, M., Gangolells, M., Roca, X. Quantitative internal infrared thermography for determining in-situ thermal behaviour of façades. "Energy and buildings", 15 Setembre 2017, vol. 151, p. 187-197.
dc.description.abstractThe thermal behaviour of a building is often underestimated or neglected during its construction and operation stages. In recent years, the heat flux meter (HFM) method has been commonly used to determine the U-value, a key parameter for assessing the thermal quality of the building envelope in steady-state conditions. However, this non-invasive test takes at least 72 h to execute, the accuracy is 14–28%, and it is not reliable for non-homogeneous building elements. An alternative technique is based on infrared thermography (IRT). Although it is generally used for qualitative analysis, quantitative internal IRT methods may also be adopted for in-situ measurement of the U-value. This research presents a method for determining in-situ U-values using quantitative internal IRT with a deviation of 1–2% for single-leaf walls and 3–4% for multi-leaf walls. It takes 2–3 h and can be used to provide information about the building envelope for the future refurbishment of existing buildings or to check the thermal behaviour of new building façades according to their design parameters.
dc.format.extent11 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Edificació::Construcció sostenible
dc.subject.lcshBuildings--Energy conservation
dc.subject.lcshHeat flux--Measurement
dc.subject.otherQuantitative infrared thermography (IRT)
dc.subject.otherThermal transmittance (U-value) In-situ measurement
dc.subject.otherBuilding façade
dc.subject.otherEnergy performance gap
dc.titleQuantitative internal infrared thermography for determining in-situ thermal behaviour of façades
dc.subject.lemacEdificis -- Estalvi d'energia
dc.subject.lemacTemperatura -- Control
dc.contributor.groupUniversitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.citation.authorTejedor, B.; Casals, M.; Gangolells, M.; Roca, X.
local.citation.publicationNameEnergy and buildings

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