Retrofit Proposals for Energy Efficiency and Thermal Comfort in Historic Public Buildings: The Case of the Engineering Faculty’s Seat of Sapienza University

The building sector greatly contributes to energy consumption and Greenhouse Gas emissions, relating the whole life cycle. Boasting a huge heritage of historical architectural value, Europe faces challenging retrofit perspectives, as potential for high efficiency has be exploited while preserving buildings’ original characteristics. present work aims feature influence passive strategy on in mild climate. As its façade cannot modified, large glazing areas involve multiple issues, such an increase heating (QH) cooling (QC) demands risk thermal discomfort. Thus, window replacement was proposed retrofitting. A dynamic simulation model TRNSYS validated with experimental data collected by continuous monitoring walls different thicknesses orientations. Solutions from Double Glazing Units (DGUs) improved insulation, internal shading activation were applied. All configurations compared terms QH, QC, performance user comfort (Fanger). Low-e DGU enabled saving up 14% annual demand, also offered good results summer, reducing QC 19%. In involved maximum PPD reduction 10 units.