Bioclimatic design and energetic requalification of existing buildings. An integrated approach

The contribution is aimed to address the issue of sustainable energy requalification of public buildings, according to a technological and bioclimatic design approach, aimed to reducing air-conditioning needs even before increasing the efficiency of plants. The main objective was to carry out a deep analysis of the buildings and of their relationship with the surrounding microclimate, in order to determine critical issues, limits and potentiality of individual building elements compared to the maintenance of the wellbeing indoor conditions. The secondary objective was to pay special attention to energetical and economical sustainability of the intervention hypothesis. To this end, we proceeded by adopting an evaluation costs and benefits model, of the specific intervention categories, extended to the whole conditioning cycle (summer and winter) and over the entire life cycle of the buildings. The work has highlighted the benefits achievable through the adoption of bioclimatic solutions aimed at optimizing the use of solar technologies. That under condition that is made a careful and constant evaluation of the design solutions.