The energy consumption is undergoing significant increases around the world due to the growth of the population and the development of industrialized countries. In France, due to the economic context the energy fairs have been consequently raised for 5 years. Also, the sustainability of the country has to be based on the energy savings.
In France, the building sector is the main source of consumptions and with a rate of building replacement of 1%, the refurbishment of existing buildings appears as the best solution. The main work of this study is to identify the possible methodologies and their impacts on the determination of the energy performance of office buildings of the 80’s in France. Besides, different energy audits have been done to improve the methodology and its resulting tools in order to be able to identify the potential solutions. With an average energy performance at 417 kWhEP/m².year, investments have to be done in the reduction of the energy consumptions.
Furthermore this report emphasizes that main investment have to be done in the field of the building envelope, the HVAC systems, the lighting equipment and the occupant behavior. Energy audit is currently considered as the best tool on the way of sustainable buildings. Finally, through the establishment of a methodology, weaknesses of the energy audits are emphasized. To support this study, many energy audits have been done in order to understand and identify correctly the main parameters that need to be investigated to increase the accuracy of such a study. Then, this report ends by an overview of a case study.
Source: KTH
Author: Vialaneix, Jeremy