Passive Houses de Ílhavo – House B

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General Information:
  • Project name: Passive Houses de Ílhavo – House B
  • Project type: new building
  • Building type: semi-detached house
  • Building Typology: residential
  • Location: Portugal, Aveiro District, Íhavo Municipality
  • Year of construction: 2011-2012
  • Number of buildings: 1
  • Number of floors: 3
  • Property area:  650 m2

 

Building Size:
  • Gross building volume: 671 m3
  • Gross heated floor area:  224 m2

 

Building Envelope:
  • Exterior wall: 100 mm EPS;20mm plaster;  250 mm thermal block BTE 25; 20 mm interior plaster; U-value = 0.262 W/(m2K)
  • Roof: 150 mm XPS + timber frame (5%); 250 mm fungiform slab of clay blocks; 20 mm plaster; Breathable barrier membrane; Ceramic tile over wood structure; U-value = 0.234 W/(m2K)
  • Basement floor / floor slab: 8 mm floor; 50 mm Polystyrene board; 250 mm fungiform slab of clay;  120 mm  lightweight concrete; 150mm screed; 2 mm polyethylene film; U-value = 0.421 W/(m2K)
  • Windows and balcony doors: Double glazing windows U g-value = 1 W/(m2K); Aluminum frame U w-value = 1.77 W/(m2K); Entrance door U d-value = 0.97 W/(m2K)

 

Building service systems:
  • Ventilation: heat recovery ventilation unit.
  • Heating: Exhaust air heat pump system; two small water radiators connected to a wood burning stove with water exchanger.

 

Building energy performance:
  • Annual heating demand: 8 kWh/m2a
  • Heating load: 10 W/m2
  • Primary energy requirement: 63 kWh /m2a
  • Air tightness: n50 = 0,45/h
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