Demonstrators - Brogarden Alingsås, Sweden

BEFORE BEEM-UP



 BUILDING DESCRIPTION.

Brogården in Alingsås is an area of multi-dwelling buildings built in 1971-1973. The area comprises a total of 300 flats, divided into 16 houses with 2-4 floors each. All flats have a balcony or a patio. The Brogården area is currently undergoing an extensive renewal, which started on the spring of 2008.

The building owner, Alingsås, and the contractor, Skanska, bring the last 8 blocks of flats (144 dwellings, 14860 m² gross living area) into the BEEM-UP project, in order to develop the processes and solutions for making the retrofitting financially viable on a large scale. The aim is to reduce the very high use of energy.



Brogården is classified by the municipality as an area of conservation value. Because of this building materials have been chosen to resemble those of the original building.

The first blocks in the area have been renovated as an initial comprehensive pilot for energy efficient refurbishment towards passive house performance. For the final 8 blocks, the aim is to bring this process up to scale, and develop cost-efficient solutions to make energy efficient refurbishment a viable alternative for the remaining housing stock.

 TECHNICAL DATA

Envelope Walls: (Curtainwalls) Gypsum boards on non loadbearing wooden studs, 95 mm insulation and façade bricks. To be demolished in its entirety.Basement: Cast-in-situ concrete walls without any insulation.Roof: 300 mm insulation on roof slab. Wooden rafters with props on roof slab.
Windows Single pane with supplementary aluminium sash and one additional pane (U value = 3.0)
Heating District heating. Water carried heating with radiators.
Hot water District heating.
Ventilation system Mechanical exhaust with air intake through window vents.
ICT – energy management (incl. smart meters) No individual measuring.
Lighting Incandescent light fittings.
Renewable Energy Source District heating is renewable to 98%.
Sanitary hot water None