Energy behaviour in historical buildings: limits and potentials for the project evaluation

The presented research (split in two papers) deals with the energy efficiency of historical buildings, both the monuments and the widespread historical fabric of the cities. At present the idea of a more sustainable approach has been shown mandatory also in the field of restoration. Sustainability seems to stress the limit of compatibility between the need to enhance the energetic performance of building’s elements and their conservation. Changing the approach could resolve the problem: to think in terms of improvement instead of trying to meet necessarily the rigid requirements of the regulations. That would require, in any case, a in depth knowledge of the building, although the software currently in use does not properly allow to take advantage of this knowledge, because of the poor libraries and steady approach. Nevertheless there are some dynamic modelling software that can partially simulate the thermal behaviour also for a historical building and the paper’s conclusion shows the requirements for the needed development.