COMBINED INVESTIGATION OF INDOOR ENVIRONMENTAL CONDITIONS AND ENERGY PERFORMANCE ANALYSIS OF AN OFFICE BUILDING IN NORTHERN GREECE

In the present work, the analysis of the energy performance of an office building is presented; the selected building is the Commercial and Industrial Chamber of Kozani, in Northern Greece. The investigation aims to improve indoor environmental conditions, and reduce energy losses through the building envelope, as well as conventional energy consumption, while also generating energy from renewable energy systems, thus achieving an overall reduction of the corresponding CO2 emissions. Dynamic simulation is implemented for the analysis; more specifically, the building under study is represented in Revit Autodesk, while the building performance simulation is run in the Green Building Studio (GBS). Moreover, experimental equipment was placed in the building, to evaluate the actual thermal comfort conditions, indoor air quality, namely CO2 concentration, and lighting performance. The investigation concludes on energy interventions that improve thermal insulation, HVAC systems performance and after all the energy efficiency of the building; total reduction of 41% regarding CO2 emissions is concluded. The proposed combination of indoor measurements and energy analysis offers the possibility of an integrated approach to the conditions and performance of the building.