Practices

MFH Wolfurt House A (wood) in Austria

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The project (planned for completion in 2019) is part of a study that compares the practical comparisons of different energy concepts for highly efficient, ecological and economically operated multi-family dwellings. One goal here is to achieve the lowest possible energy and heating demand in the operation of the building. For this purpose, different variants were already planned and selected for the construction, such as heating system and building shell according to the latest research findings. The outstandingly low levels of energy demand and consequential CO2 emissions have made it achieve the Golden status of the Austrian klimaaktiv criteria.

 

BUILDING DETAILS  

  • Building: Apartment building, new building
  • Completed: 2019
  • Method of construction: lightweight
  • Number of residential units: 18
  • Number of floors: 5
  • Cond. Gross floor area: 1779.1 m²
  • Usable area: 1296.85 m²
  • Photovoltaic system: Yes
  • Heating system space heating: heat pump
  • Heating system hot water: heat pump
  • Type of ventilation system: with heat recovery

PLANNING AND EXECUTION

  • At least 2 infrastructures at 1.000 m: Yes
  • Life cycle cost calculation: Yes
  • Energy monitoring: Yes
  • Blower Door Test (n50 value): 0.6 h -1

ENERGY AND SUPPLY 

  • Energy data calculated according to OIB guideline 6 - 2015
  • Heating demand (HWB): 22 kWh / m² GFA a
  • Primary energy demand (PEB): 41.4 kWh / m² GFA a
  • CO 2 emissions: 6 kgCO 2 / m² GFA a

BUILDING MATERIALS AND CONSTRUCTION 

  • HFC-free insulating materials and mounting foams: Yes
  • OI3 Index (OI3 BG3, BZF ): 355

COMFORT AND INDOOR AIR QUALITY

  • Proof of summer fitness: Yes
  • Room air measurement VOC: 950 μg / m³
  • Room air measurement formaldehyde: 0.1 mg / m³

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