Field survey on multi-family buildings in order to depict their energy characteristics

Abstract

The energy performance of buildings directive (EPBD) (91/2002/EU) opened the way for member states of European Union to create and apply a holistic approach on buildings' energy performance. Taking into consideration the reduced ratio of new buildings, energy refurbishment of existing building stock appears as a nodal point. In particular, buildings in Greece accounts approximately 4 million, while 70% has been constructed before the implementation of the first Thermal Insulation Regulation (TIR), thus they do not have any insulation. So, there is an extremely high potential for energy conservation in Greek building stock. Therefore, an extensive field study was carried out in northern area of Greece in Thessaloniki, through a detailed questionnaire. The purpose of the research is to create an integrated thermal insulation scheme in order to succeed the highest mitigation of energy losses through building envelope. Retrofitting insulation solutions were evaluated and applied through various simulation scenarios with different levels of insulation thickness.

Towards the EU emissions targets of 2050: optimal energy renovation measures of Finnish apartment buildings

“…However, most of the building stock consists of old, low performance buildings. For example, in Greece 70% of buildings have been built before the implementation of energy performance regulations (Chadiarakou & Santamouris, 2014). Similarly in Finland, 43% of the housing stock has been built in the 1950s, -60s and -70s (Holopainen, et al, 2016).…”

EU Emission Targets of 2050: Costs and CO2 Emissions Comparison of Three Different Solar and Heat Pump-Based Community-Level District Heating Systems in Nordic Conditions

“…The current buildings in Europe are old and aging and these buildings need to be renovated to improve the energy efficiency of the building stock [9]. In Greece, 70% of the buildings were built before the EU directives [10], while in Finland, around 43% of the buildings were built before the 1980s [11]. Moreover, old buildings in the Mediterranean climatic area [12] require different solutions than buildings in the Nordic region and such solutions cannot be imported from different climatic conditions.…”