An integrated sustainable and profitable approach of energy efficiency in heritage buildings

摘要: Abstract The aim of Sustainable Development Goal 7 is to ensure access affordable, reliable, sustainable and modern energy for all. Increased efficiency particularly important in the construction industry because urban agglomerations currently consume up 80% global energy, 40% which attributable buildings. In countries like Italy however, where historical buildings constitute a significant part building patrimony, improving not always straightforward as interventions must take into account materials used well context construction. Therefore, this research was establish methodology that would identify most effective means achieving taking aspects its cultural context. proposed described paper involves: preliminary analyses elements value level transformability facades; selection different insulating materials; dynamic simulations behaviour; intervention costs relation each type insulation finally preparation multi-criteria matrix method wall with differing degrees transformability. Each material analysed heating cooling requirements cost impact. applied case study Province L’Aquila, Italy. multicriteria framework, improvements thermal building, it presented. Specifically attention focused on requirements, results indicate that, respect possible adopt strategies finalyzed improve these buidings, contributing way, also toward SDG7. Specifically, best performance high can be obtained using calcium silicate, extruded polystyrene, kenaf hemp, whilst, low transformability, are polyurethane linen fiber. Finally, external constraints prevent application thick coat internally there limited space, use silicate found efficient measure.