Real consumption and numerical methodologies in energy performance of buildings

The evaluation of energy performance of buildings (EPB) depends on several factors, which are related to local climate contest. In northern Europe countries the evaluation of EPB depends of the energy heating dispersions, since climate is mostly cold all over the year. In these countries the design of buildings’ technical solutions is comprehensive of super-insulation of the wrapped and frames, and of capture solar energy by frames and wall accumulation (solar passive solution). In southern Europe countries, where climate is mainly warm and dry, the buildings technical solutions are comprehensive of wind passive ventilation, cooling plant and thermal inertia of walls, which avoid overheating of indoor environments. In the Mediterranean area the climate do not justify neither of the aforementioned approaches. In these countries it is necessary to use flexible solutions, which could change in relation with climate conditions, taking advantage of their peculiar architectural elements, as: the porch, the court, the patio.