La Caratterizzazione Ottico-Energetica Delle Building-Skins

The modern designing techniques see the building as a system able to respond to every kind of external (weather and environment) and internal (management and employment of spaces). By this approach, the designer is expected to have a full knowledge of the active and passive behaviour of the building. Focusing on building envelope, it’s simple to explain that the optic and energetic characterization of buildings surfaces, deeply in touch with external environment, can be fundamental for determining the exact energy balance out coming from the thermal analysis of the buildings (focused on solar gains). Equally the importance of this characterization is due to determinate the free thermal rules of conduct of buildings’ surfaces, defining every urban macro-zones and how they could influence the cities’ micro-climate behaviour (thermal mass and heat island). This paper has a dual-purpose, intimately related each other. Primarily it will tend to show a leading practice for determining field measurements of optic and energetic performances of buildings’ envelope materials. Secondly it will show an accurate comparison between the results obtained with this leading procedure and others obtained from laboratory measurement of the same test samples.