
Major renovation to energy class A
The building has been fully renovated and thermal insulation materials have been laid on all solid surfaces: walls, floors and roofs. Internal insulation has been used for some of the walls and roofs. All the original windows and doors have also been replaced and this has happened gradually over the years. The heating system has been replaced by one with variable refrigerant flow (VRF) systems with very good performance characteristics and a seasonal transformation efficiency SCOP>3,5W/W, which is considered as RES under Bulgarian legislation.
Berkovitsa Municipality
Construction: 1971
Major renovation: Yes
Construction | U-value |
---|---|
Walls | |
Roof | |
Base |
Total annual energy consumption – 108,51 MWh/a or 34,2 kWh/m2/a
Primary energy consumption – 102,5 kWh/m2/a or 101,8 kWh/m2/a
Building air tightness – n=0,50 h-1
CO2 emissions – 70,4 tco2/a
Renewable share of energy – 49% of the energy needs for Heating, Cooling, Ventilation, DHW and Lighting; equating to 100,3 MWh per year