The impact of envelope insulation and ventilation on summer performance

This work describes a study aiming to establish the coupled impact of the increase of the insulation of the building envelope and the adoption of night ventilation upon the thermal performance of buildings. A particular emphasis is placed upon the consequences in terms of increased temperatures in summer, potentially leading to increased needs for installation of airconditioning. The methodology is based on parametric studies obtained through simulations. The requirements to avoid air-conditioning, in terms of window shading for each level of insulation, are presented.