A CASE STUDY OF LOW-ENERGY HOUSES IN NORTHERN ITALY

In 2007, the "passive house" concepts were applied at the construction of 16 houses in Se kin Bergamo, Italy. Using a holistic design process characterized by the integration of architectural and technological choices, the ambitious target of 30 kWh/m(2)a was reached (useful energy). Passive strategies are used to keep the indoor comfort: very high insulating levels; high winter solar gains; small window area in the north facade with high performance; large openings and conservatory space in the south facade. The mechanical plant system is composed by solar photovoltaic panels installed on the south-facing roof; electrical radiant floor heating system; high efficiency electric boiler; mechanical ventilation with heat recovery. This paper shows a real example of a holistic design process integrating architectural, technological and energetic issues; the result is a low-energy building with a contemporary architecture that suite perfectly to the specific context.