CONSERVAZIONE E SOSTENIBILITÀ: TECNICHE BIOCLIMATICHE TRADIZIONALI IN AMBITO MEDITERRANEO

Giuseppe Desogus1, Caterina Giannattasio1, Miriam Stara1

1 Dipartimento di Ingegneria Civile, Ambientale e Architettura - DICAAR - Università degli Studi di Cagliari, via Santa Croce 59, Cagliari, cgiannatt@unica.it

ABSTRACT

It is well known nowadays that the diffusion of HVAC systems in buildings is increasing their energy consumptions. The energy necessary to achieve comfort limits becoming more and more restrictive is now the relevant part of overall consumptions.

The seriousness of the situation is even more evident in historical buildings. Those generally undergo retrofit interventions necessary to upgrade energy and comfort requirements. But in most cases they alter the original constructive elements and distribution of internal spaces.

Some peculiarities of traditional buildings, however, could become new models to be inspired by, with the suitable and convenient corrections in order to actualize the past constructive solutions and microclimatic strategies.

The paper hereby proposed highlights the potential of pre-industrial bioclimatic techniques for heating and cooling, with particular reference to the Mediterranean ones. The aim is to rediscover and propose again them for the energy retrofitting interventions on protected buildings. That could lead to a reduction of HVAC systems size and consumptions, that could be more easily integrated, improving the sustainability of interventions both from a conservative and energetic point of view.

Key-words: Historic buildings, compatibility, restoration project, passive heating and cooling, thermal hygrometric comfort.