Stakeholders

Function : Contractor representative

Velux

[email protected]

 http://velux.be


Organization of studies and renovation + financing

Function :

Troubleyn NV

[email protected]

 http://www.troubleyn.net


Completion of work and coordination of certain subcontracted works

Function : Designer

ONO Architectuur

[email protected]

 http://ono-architectuur.be


development of the renovation concept

Function : Thermal consultancy agency

Daidalos Peutz

[email protected]

 http://daidalos.be


Thermal and durability advice

Function : Contractor

Foyer Anderlechtois

[email protected]

 http://foyeranderlechtois.be


renovation

Contracting method

General Contractor

Owner approach of sustainability

certification Active House label

Architectural description

Renovation of a three-facade house dating from the 1920s to bring it to high energy standards, while maximizing comfort. Aesthetic research linked to the original image of the garden city (characteristic of Brussels)

Energy consumption

• Primary energy need : 57,70 kWhep/m².an
• Primary energy need for standard building : 202,24 kWhep/m².an

Calculation method :

CEEB : 0.0008

• Final Energy : 131,00 kWhef/m².an
Breakdown for energy consumption :

Heating: 44.7 kWh / m².an hot water: 17.4 kWh / m².an --> total consumption gas: 62.1 kWh / m².an Fans: 3.1 kWh / m².an Pumps: 2 , 9 kWh / m².year Lighting: 3,7 kWh / m².year Kitchen: 10,5 kWh / m².year Laundry: 3,8 kWh / m².year Multimedia: 6,0 kWh / m².year photovoltaic production: -5,8 kWh / m².an --> total electrical consumption: 24,2 kWh / m².an

More information :

Actual consumption and performance will be measured during the first two years of occupation.

• Initial consumption : 1 300,00 kWhep/m².an

Envelope performance

• Envelope U-Value : 0,31 W.m^-2.K^-1
More information :

Total heat transfer coefficient: 84.8 W / K average U-value of windows: 1.08 W / m².KU slab on floor: 0.14 W / m².KU existing exterior insulated facades: 0, 15 W / m².KU new facades extension: 0.11 W / m².KU roof sloping: 0.13 W / m².K

• Building Compactness Coefficient : 1,50

Indicator : n50

• Air Tightness Value : 2,90

Users' control system opinion : The building has been occupied for a month

Systems

Heating system :
• Condensing gas boiler
• Water radiator
• Low temperature floor heating
Hot water system :
• Condensing gas boiler
Cooling system :
• No cooling system
Ventilation system :
• Natural ventilation
• Nocturnal ventilation
• Nocturnal Over ventilation
• compensated Air Handling Unit
Renewable systems :
• Solar photovoltaic
• Renewable energy production : 6,00 %
 Photovoltaic panels 4.86 m2 orients south - 900 Wp
Other information on HVAC :

Hybrid ventilation that combines mechanical ventilation with natural ventilation in mid-season and summer. This natural ventilation allows free cooling to ensure summer comfort and avoid any air conditioning.

Solutions enhancing nature free gains :

The windows facing north-east are equipped with triple glazing. The windows are oriented to the south-east and south-west are equipped with double glazing. The solar protections are mobile (external blinds) to allow the solar contributions in winter.

Smart Building

BMS :

Connection of the mechanical ventilation system and the motorization and management of the windows. They open automatically in certain indoor and outdoor conditions.

Urban environment

Urban suburbs

Product

VELUX automated roof windows



VELUX

[email protected]

 http://velux.be


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Automated roof windows involved in ventilation strategy

Great ease of installation and operability by the occupants

Energy bill

• Forecasted energy bill/year : 1 090,00 €

Real energy cost/m2 : 11.47

Real energy cost/Dwelling : 1090

GHG emissions

• GHG in use : 12,20 KgCO₂/m²/an
Methodology used :

WE Bruxelles