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Stephanusstraße, Hannover

Description

With the construction of the Passivhaus, the Ostland Wohnungsgenossenschaft (Ostland Housing Corporation) completed GILDE-CARRE, their new residential quarters on the former premises of the Gilde brewery. Together with the existing Ostland administrative building, the gatehouse creates a visual "archway" leading into the northwestern part of the GILDE-CARRE. The building's two – in places three – stories were built out into a total of five apartments, which have variable floor plans and are accessible by elevator. A preschool accommodating up to 27 children is located on the ground floor. The outdoor space is designed to create a direct connection to the newly restructured Kuchengarten urban square and traffic hub.

Parties involved

Client:

Ostland Wohnungsgenossenschaft eG

Design:

lindener baukontor

Passivhaus project development and building services planning:

Polyplan GmbH

Building data

Building type:

Residential and commercial building with preschool

Location:

Hannover-Linden

Year of construction:

2010

Units:

1 child care center

Heated usable space:

846 m²

Subsidies:

proKlima

Building shell

EXTERIOR WALLS:

Clinker facade: Cellular concrete masonry with cavity wall insulation and facing bricks; HTC = 0.14 W/(m²K) Copper facade: Cellular concrete masonry with copper- curtain wall and mineral-wool insulation; HTC = 0.12 W/(m²K) Plastered facade and eternit facade: pre-made wooden element with 36 cm total insulation;

HTC = 0,10 W/(m²K)

Windows:

Plastic windows with heat-insulating triple glazing;

HTC = 0.72 W/(m²K)

Roof:

flat green roof with 24 – 32 cm sloped insulation;

HTC = 0.12 W/(m²K)

Basement Ceiling/ Floor plate:

22 cm insulation atop reinforced concrete slab;

UTC = 0.11 W/(m²K)

Building technology

Ventilation:

Two ventilation systems with heat recovery in the preschool; central comfort-ventilation systems with heat recovery in each of the five apartments

Heating:

Heating and hot water generation via district heating network; heat -distribution over ventilation systems and bathroom heating elements

Air conditioning:

no active air conditioning

Measured values

AIRTIGHTNESS:

n₅₀ = 0.4 h-1 in the child care center

n₅₀ = 0.6 h-1 in the apartments

Calculated values

Calculated method: Passivhaus planning package

HEATING ENERGY NEEDS:

15 kWh/(m²a)

TOTAL ENERGY NEEDS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:

District heating

54 kWh/(m²a)

Electricity

19 kWh/(m²a)

PRIMARY ENERGY NEEDS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:

70 kWh/(m²a)

CO2 EMISSIONS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:

16 kg/(m²a)

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