Energy and environmental rehabilitation of a listed neoclassic building in Athens, Greece

The energy rehabilitation of listed buildings is of great importance as they are many limitations of the possibletechnical interventions. The paper presents the outcomesof a study concerning the possible interventions in an existing building focusing in the minimization of the energy consumption and the achievement of the desirablethermal and visual comfort.The building is located in the centre of the city of Athens,Greece with total heated area of approximately 896m2. The building has areas with different use, such as offices, seminar room, and restaurant. The study has been done using up to date thermal and lighting simulationtools. The results are given in the form of heating and cooling load but also of the fluctuation of internal temperatures as well. The expected energy conservationis quite high but the most important is the expected improvement of the internal comfort conditions. The target of the study was of having the building working without a cooling system.