@ARTICLE{10.21494/ISTE.OP.2020.0547, TITLE={Mesure in situ du coefficient d’échange sur une paroi de bâtiment : système basé sur une excitation harmonique}, AUTHOR={Adrien François, Laurent Ibos, Vincent Feuillet, Johann Meulemans, }, JOURNAL={Entropie : thermodynamique – énergie – environnement – économie }, VOLUME={1}, NUMBER={Numéro 4 spécial SFT Prix Fourier}, YEAR={2020}, URL={http://openscience.fr/Mesure-in-situ-du-coefficient-d-echange-sur-une-paroi-de-batiment-systeme-base}, DOI={10.21494/ISTE.OP.2020.0547}, ISSN={2634-1476}, ABSTRACT={This paper presents a novel in situ measurement method of the total heat transfer coefficient on a building wall. The device developed is based on harmonic thermal load of the wall surface. In situ tests of the method were performed in a steady environment as well as in off-equilibrium conditions (generated using electrical heaters). The heat transfer coefficient was estimated to 7.5 and 9 W.m−2.K−1 respectively. A parametric analysis allows determining the optimum operating conditions. The results obtained were in good agreement with standard values found in the literature. Measurement uncertainties were evaluated and a simple analytical model of the device was also developed.}}