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Διερεύνηση του τρόπου αποκατάστασης παραδοσιακού κτιρίου από φέρουσα τοιχοποιία με παράλληλο στόχο τη βελτίωση της ενεργειακής του συμπεριφοράς

Fotiou Afroditi

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Summary

The main goal of this thesis is to provide a study on the restoration of a traditional masonry building, by integrating in the early planning phase, energy-saving interventions. The case study is applied on a four-storey masonry building located in the west segment of the old Town of Chania in Crete. The study is composed by three main parts. In the first part of the study general aspects of the area are outlined, including information regarding topography, climate, geology, seismotectonic and historical data. The legislative framework regarding restoration and preservation of cultural heritage and energy efficiency in the building sector, in national and European level, is also presented. The existing construction is being imprinted in detail, damages are located and the previous restoration interventions recorded. The second part of the study focuses in the static and dynamic analysis of the existing construction and the design and analysis of a steel indepented structure that will facilitate the development of the interior layout, forming the two storeys and the roof of the building. The two structures were analysed independently and linked together for both static and dynamic loads using the finite element software Marc Mentat. Aim of this procedure was the optimization of a steel structure that will have minimum penetration points to the existing envelope and thus minimum energy losses due to thermal bridges after the application of interior insulation. The third part of the study introduces the concept of energy upgrade in historic buildings and provides suggested energy saving interventions focusing on the implementation of interior insulation. The most common thermal insulation materials are presented, their properties are analysed and the humidity impact in case of interior insulation application described. Four interior insulation scenarios are chosen from the relevant existing literature and their structure and properties presented. The hygrothermal performance of the four scenarios is simulated with the use of WUFI Pro software, which evaluates moisture conditions in building envelopes by performing one-dimensional hygrothermal calculations on building component cross-sections. Finally, the study is completed with the extraction of useful conclusions which emerged during its development and lead to questions and suggestions for future research and further applications.

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