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Vol 16, Issue 1, 2024
Pages: 113 - 120
Research paper
Architecture Editor: Maja Ilić
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Published: 12.06.2024. Research paper Architecture Editor: Maja Ilić

DETERMINING THE THERMAL TRANSMITTANCE COEFFICIENT OF THE OPAQUE FAÇADE WALL ELEMENT USING NON-INVASIVE METHOD

By
Slobodan Peulić Orcid logo ,
Slobodan Peulić
Contact Slobodan Peulić

Department of Architecture Technologies, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banja Luka, Bosnia and Herzegovina

Darija Gajić Orcid logo ,
Darija Gajić

Department of Architecture Technologies, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banja Luka, Bosnia and Herzegovina

Jelena Kljakić ,
Jelena Kljakić

Department of Architecture Technologies, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banja Luka, Bosnia and Herzegovina

Biljana Antunović Orcid logo
Biljana Antunović

Department of Architecture Technologies, Faculty of Architecture, Civil Engineering and Geodesy, University of Banja Luka, Banja Luka, Bosnia and Herzegovina

Abstract

Prior to building retrofitting, thermal performance assessment of the building is essential. An adequate assessment can provide useful insights to heat-losses and envelope anomalies i.e. thermal bridges, mold, air infiltration etc. The most important physical quantity that needs to be defined is the thermal transmittance (U-value) which is the key factor in determining the transmission heat loss coefficient HT, as well as in determining the building's energy efficiency. In the absence of documentation, experimental methods are the only solution to identifying such parameter. This paper makes overview of experimental methods; and presents an example of non-destructive method by using Quantitative Infra-Red Thermography (QIRT) in service of calculating U-value of the opaque façade wall element.

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