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dc.contributor.authorGaspar Fàbregas, Kàtia
dc.contributor.authorCasals Casanova, Miquel
dc.contributor.authorGangolells Solanellas, Marta
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Tecnologia de l'Arquitectura
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de Projectes i de la Construcció
dc.identifier.citationGaspar, K., Casals, M., Gangolells, M. Review of criteria for determining HFM minimum test duration. "Energy and buildings", 1 Octubre 2018, vol. 176, p. 360-370.
dc.description.abstractThe actual thermal behaviour of façades is important to identify suitable energy-saving measures and in- crease the energy performance of existing buildings. However, the accuracy of in situ measurements of façades’ U-values varies widely, mostly due to inadequate test durations. The aim of this paper was to evaluate the minimum duration of in situ experimental campaigns to measure the thermal transmittance of existing buildings’ façades using the heat flow meter method, and to analyse the thermal performance of the façade during the test. Minimum test duration was determined according to data quality criteria, variability of results criteria, and standardized criteria for different ranges of theoretical thermal trans- mittance and for the same range of average temperature difference. Then, the minimum test duration results were compared. The findings show that ISO criteria are more sensitive and provide more accurate results, requiring a longer test duration. However, when certification is not required, the duration of the test could be reduced by applying data quality and variability of results criteria. The minimum duration of experimental campaigns depends on the theoretical thermal transmittance and the stability of climatic conditions. Moreover, results are more accurate when the dynamic method is used.
dc.format.extent11 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Edificació::Elements constructius d'edificis::Elements de tancament
dc.subject.lcshThermal analysis
dc.subject.lcshArchitecture and energy conservation
dc.subject.otherU-value calculation
dc.subject.otherThermal transmittance
dc.subject.otherIn situ measurements
dc.subject.otherExperimental campaign
dc.subject.otherTesting duration
dc.titleReview of criteria for determining HFM minimum test duration
dc.subject.lemacAnàlisi tèrmica
dc.subject.lemacArquitectura i estalvi d'energia
dc.contributor.groupUniversitat Politècnica de Catalunya. GRIC - Grup de Recerca i Innovació de la Construcció
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorGaspar, K., Casals, M., Gangolells, M.
upcommons.citation.publicationNameEnergy and buildings

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