Existing buildings energy footprint (AE) – an instrument for the evaluation of real PEC (building energy performance) in real conditions of climatic and anthropic loads

The energy footprint of a building is an operational characteristic specific to the building structure as well as to the energyrelated operational conditions of the building. This paper presents the experimental programme carried out on the support of the CE INCERC Bucharest experimental building in the 2008-2009 cold season and the results obtained in the form of the building energy footprint. At the same time, the building energy footprint before the energy-related upgrading (2003-2004 cold season) are presented, as well as those subsequent to the energy-related upgrading (thermal protection, equipping with a ventilated solar space and heating system replacement). The character natural laws of the energy footprint are emphasized. This paper presents a theoretical substantiation of the use of the energy footprint method in the case of condominiums in the form of the operational method, which is useful in settling the functional characteristic in any climatic conditions and in any operational conditions.