Historische Gebauede und Heizanlagen: Erfahrungen mit der Temperierung in Norditalien

Temperierung and preservation of architectural heritage. The Northern Italy experiences critically reconsidered. The “Tempering” advantages are different, depending on local climates, on building characteristics, but also the idea of preservation, and the architectural design concept are concerned. In Northern Italy there are now numerous examples, that reflect different approaches and working methods. The Palace Cattaneo in Cremona was almost certainly the first of them, in 1996. The Tempering seemed well satisfy the preservation requirements, if it is conceived as conservation of historical matter. It avoided the great size of piping and devices, and big bores characterizing the traditional systems. It was not practiced any wall chasing in plasters and masonry. In some places the copper pipe was left exposed. Furthermore, the tempering was integrated with the electrical system and in this purpose special pieces were designed. The brick walls with clay mortar, 60 cm. thick, let suppose good results. This pilot experience show few errors, e.g. in the building insulation, in the placement of tubes and circuits, in the general design. There were differences compared to the first Bavarian examples: the rooms were normally more than four meters height, and needed a summer cooling, which even requires additional equipment. In this case the existing eighteenth -nineteenth century hot air system, a very common type of heating in the city, provided cooling. A second example, again at Cremona, destined to a school, is the palace Pallavicino (2002-2005). It was a complex of different buildings, much transformed over time and had lacked the refined details of Cattaneo Palace. In this case it was made a base of 90 cm. in plaster, adapted to use, that contained a double circuit of copper pipes. The size of the largest rooms make the system slightly undersized. Also in this case it is appropriate to describe less successful aspect On these three cases, relatively complete and consistent, you can start a discussion useful for further development.