Client:
K3 Dämmservice
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Alte Speicherstraße, Hannover
Description
K3 Dammservice is an organization specializing in the installation of cellulose insulation. The company has grown continually since its founding in 1999, and now numbers among the 20 largest cellulose specialists. Located in the Linden Harbor commercial zone, the office building with exhibition areas was integrated into an existing warehouse. The construction team used pre-made wooden elements to construct a block, then filled the exterior components with blown-in cellulose.
The insulation center is a point of contact for commercial and private customers looking for expert consultation on thermal insulation, air leak sealing, and composite insulation systems. The exhibition space holds hands-on demonstration models and is used for training sessions.
Parties involved
Planning:
Architekturbüro Andrea Grust
Building technology:
Corona Solar
Quality control:
Planungsbüro Schmidt
Building data
Building type:
Office building with exhibition area
Location:
Hannover-Linden
Modernization:
2010 - 2011
Units:
2
Heated usable space:
111 m²
Subsidies:
proKlima
Building shell
Exterior walls:
plasterboard planking on interior side; OSB panels; wooden stud frame with 22 cm cellulose insulation and 10 cm wood-fiber insulation panels - some plastered, some with rear-ventilated wooden formwork;
HTC = 0.13 W/(m2K)
Interior walls along warehouse:
F90 wall construction: double plasterboard planking on metal studs with cellulose insulation; wooden stud frame with 30 cm total cellulose insulation; OSB and plasterboard planking on both sides;
HTC = 0.14 W/(m2K)
Windows:
Heat-insulating triple-glazed windows in wood-aluminum frames with insulated cores; HTC = 0.7 W/(m2K)
ceiling:
Wooden construction with 24 cm cellulose insulation; OSB panels on upper side; 6 cm polyurethane insulation and gypsum fiber ceiling panels; HTC = 0.1 W/(m2K)
Floor:
New floor construction atop existing reinforced concrete bottom plate: dividing layer, floor planking atop 26 cm polyurethane insulation; HTC = 0.08 W/(m2K)
Building technology
Ventilation:
Comfort-ventilation system with heat recovery; heat distribution efficiency = 85 %;
flow volume 100 to 400 m3/h
Heating:
Building heat provided via supply air heating alone. Residual heat generated by IR heaters.
Air conditioning:
no active air conditioning
Photovoltaics:
38 kWp system
Measured values
Airtightness:
n50=0,4h-1
Calculated values
Calculation method: Passivhaus planning package; Initial values: Hannover building typology
HEATING ENERGY NEEDS:
19 kWh/(m²a)
TOTAL ENERGY NEEDS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:
Electricity
46 kWh/(m2a)
Total energy generated:
PV SYSTEM
Electricity
33.000 kWh/a
PRIMARY ENERGY NEEDS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:
120 kWh/(m²a)
including credit for generated electricity: Plus Energy standards met
CO2-EMISSIONS FOR HEATING,AIR CONDITIONING,DHW,ELECTRICITY:
29 kg/(m²a)
including credit for generated electricity: Plus Energy standards met
