Multifamily residential building in Cluj-Napoca
nZEB Example

Technology

Exterior wall

EvoHouse Wall Buildup:

  • 13mm – Gypsum Board
  • 38mm – Technical space
  • 60mm – Cross Laminated Timber Wall
  • 320mm – Steico Flex wood fibre insulation
  • 60mm – Steico Protect wood fiberboard insulation
  • 7mm – Nanopor white render
  • U-value = 0.094 W/(m2K)

Basement floor / floor slab

EvoHouse Basement floor buildup:

  • 12mm – Ceramics
  • 80mm – Screed
  • 30mm – XPS Polystyrene
  • 100mm – XPS Polystyrene
  • 150mm – Reinforced concrete slab – warm
  • 200mm – XPS – 30 high resistance polystyrene
  • 4mm – hydroinsulation
  • 100mm – Reinforced concrete slab – cold
  • U-value = 0.108 W/(m2K)

Roof

EvoHouse Roof buildup:

  • 13mm – Gypsum board
  • 100mm – Technical space
  • 80mm – Cross Laminated Timber Slab
  • 600mm – Steico Flex wood fibre insulation
  • 15mm – OSB board
  • Ventilated Attic under 2% Slope wooden roof structure
  • U-value = 0.062 W/(m2K)

Frame

Internorm, KF 410 Thermo Passiv

  • PVC-U
  • Uf: 0.79
  • U w-value = 0.84 W/(m2K)

Glazing

Internorm Solar+ 0,6 Argon – 48 mm (Edition passiv)

  • U g-value = 0.62 W/(m2K)
  • g -value = 60 %

Entrance door

Internorm Door

  • U d-value = 0.79 W/(m2K)

Ventilation

Zehnder, ComfoAir 200 92% Heat recovery efficiency with Enthalpy exchanger

Heating installation

Panasonic Aquarea 9kW Bi-Bloc Air-to-water heat pump with 4.5 COP value with buffer and bathroom comfort radiators. (500W/bathroom)

Domestic hot water

Panasonic Aquarea 9kW Bi-Bloc Air-to-water heat pump with 4.5 COP value. 1000 litre storage.

Ecological aspects

100% ecologic superstructure: Cross Laminated Timber structure and 100% recycled wood fibre insulation, wooden roof.

Building owner

Private owners

Building type
Project type
Country
Year of construction / major renovation

Construction: 2014
Major Renovation: N/A

Total floor area
260 m²
Envelope
Construction U-value
Walls

External Wall

0.094 W/m²K
Roof
Base

Basement floor / floor slab

0.108 W/m²K
Windows Uw Uf Ug G

Windows

0.84 W/m²K 0.79 W/m²K 0.62 W/m²K 60 %
Doors U-value

Entrance Door

0.79 W/m²K
nZEB Parameters

Primary energy consumption: 96 kWh/m2year
Building tightness: 0.28/h
CO2 emissions: 11 kgCO2/m2year
Renewable share of energy: 50%

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