Heating, ventilating and cooling impacts of double windows on historic buildings in Mediterranean area

Based on multi physical experiences and lessons learned, this paper presents different impacts of double windows in buildings. A general review of double window uses was produced. The specific constraints of historical buildings were also analyzed. Then a multi physical investigation about heating, cooling and ventilating aspects was developed. That led to the assessing of energetic impacts of double windows in retrofitted historical buildings in Mediterranean area. It highlighted some well-known fields like the winter functioning or the heat recovery potential but also some fields of investigation like the questions of the warm summer behaviour or the historic building integration.