Social accommodation building
nZEB Example

The building consists of two floors without a basement. The walls are brick and the windows are PVC glazed. The main façade of the building is oriented to the North and the largest percentage of glazing is to the South.
The building is provided with a central heating/cooling system with direct evaporative multi-split air conditioners.
Domestic hot water is provided by a combination of a storage boiler with two coils connected to two high temperature hydro boxes. The water heater is also complete with electric heaters.

Building owner

Burgas Municipality

Building type
Project type
Year of construction / major renovation

Construction: 2020
New building with energy class A

Total floor area
260 m²
Construction U-value
nZEB Parameters

Total annual energy consumption – 24,8 MWh/a or 95,3 kWh/m2/a
Primary energy consumption – 24,7 MWh/a or 95,0 kWh/m2/a
Building air tightness – n=0,50 h-1
CO2 emissions – 5,8 tco2/a
Renewable share of energy – 56% of the energy needs for Heating, Cooling, Ventilation, DHW and Lighting; equating to 27,25 MWh/a

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