Energy Renovation of Typical Concrete Apartment Building in Estonia by Using Wooden Modular Element

The multi-storey large concrete element building is renovated to nearly Zero Energy Building (nZEB) in Estonia by using prefabricated large insulation elements for walls and roof. The study of that project includes complex of measures: hygrothermal measurements and analysis, highly insulated facade and roof elements, the full modernisation of heating and ventilation systems, and on site heat and electricity production from renewable energy sources. Ventilation ducts are installed into the modular panels to minimize supply ductworks in apartments. All technical systems will be equipped with monitoring systems and data will be logged periodically. The designed heat transfer coefficient of is K_wall≤0.11 W/(m².K) for walls, K_roof≤0.1 W/(m².K) for roof and K_window≤0.8 W/(m².K) for windows and external doors. The analyse, design and renovation process of the integrated nZEB design method gave us a unique experience, showing weak links in the chain and helping to prevent faults in the whole process in the future.

TARGO KALAMEES, Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.)
PEEP PIHELO, MSc
KALLE KUUSK, PhD

Nearly Zero Energy Building research group, Tallinn University of Technology (5, Ehitajate tee, 19086 Tallinn, Estonia)

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