Investigation Of The Improvement Building Envelope Impact On Energy Consumption Using Energy AuditFatiha Mokhtari, Djaffar Semmar, Mourad Chikhi, Nachida Kasbadji Merzouk and Soumia OukaciMATEC Web Conf., 307 (2020) 01031DOI: https://doi.org/10.1051/matecconf/202030701031