Performance of lightweight and heavyweight building walls with naturally ventilated passive and active facades

Well-designed ventilated air-spaces behind external claddings in the building envelope can potentially reduce thermal energy flow entire wall structure. In this study, impact of dynamic thermo-hydraulic behavior naturally cavity on performance lightweight and heavyweight assemblies with traditional passive active (i.e., BIPV) facades is investigated. A numerical transient 2-D model validated against experimental measurements employed to perform analysis using actual weather data practices Europe, particularly Switzerland. The results reveal that change cladding type from fiber cement PV façade increase time lag structure up 2 h summer decrease it 1 winter. maximum difference between amplitudes heat flux through interior surface for a assembly core 1.5 times higher compared core. show enlarging thickness 45 mm 110 times. It also shown reflective insulation adjacent could temperature by more than 30% case without insulation. This research shows replacing an affect assembly, which highlights importance analyzing structures transition towards modern skins.