Open AccessBuilding thermal bridge heat losses quantification by infrared thermography. Steady-state evaluation and uncertainty calculation
Author(s) -
Adrien François,
Laurent Ibos,
Vincent Feuillet,
Johann Meulemans
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1343/1/012171
Subject(s) - thermography , emissivity , infrared , thermal , reproducibility , materials science , steady state (chemistry) , bridge (graph theory) , thermal infrared , mechanics , environmental science , structural engineering , nuclear engineering , optics , engineering , thermodynamics , mathematics , physics , chemistry , statistics , medicine
This study deals with the measurement of thermal bridges properties in building walls. The methodology is tested on an experimental wall built in laboratory. The setup thermal bridges transmission coefficients ψ and χ are measured in steady-state by infrared thermography. To do so, the thermal bridges impact factor I tb is calculated. In the proposed method, the value of the surface emissivity is not required: only apparent temperatures are used. Experiments proved good reproducibility. Calculations of the uncertainties enabled to identify infrared measurements as the main sources of error.