On the Thermal Design of the External Walls in Buildings

The subject concerning the optimization of thermal resistance-capacity distribution within the external walls of buildings is discussed as regards the building-plant interaction and the building passive behaviour. Providing numerous examples, walls being designed to optimize the building-plant interaction are shown to assure a good building behaviour even if an air-conditioning plant is lacking. In the examined cases the resistance-capacity distribution providing the best results is that occurring in a three-layer wall in which the high-thermal-capacity material is disposed between two insulating-material equal layers.