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Dreifeld-gym, Laatzen

Description

The city of Laatzen built in 2005 at the time world's largest sports hall in passive house standard for the Albert-Einstein-School. The hall is about 28 meters wide and 45 meters long. The concept was so well received that the planning team was able to convince another community of a passive house gym.

Involved parties

Client:

city Laatzen

Design:

ART-plan, architectual and engineering office

Calculations:

Architektur- und TGA-Planungsbüro Carsten Grobe

Building data

Building type:

gym

Location:

Laatzen

Year of construction:

2005

Usable space:

1759 m²

Subsidies:

proKlima

Building shell

EXTERIOR WALLS:

Brick facade with 36.5 cm and 16 cm aerated concrete core insulation of the quality 0.0035 W / (mK), vacuum insulation in the window reveal to minimize thermal bridges, HTC = 0.11 W / (m²K)

Lightweight panel with 20 cm insulation quality of 0.025 W / (mK), HTC = 0.12 W / (m²K)

WINDOWS:

insulated windows made of plastic, heat-insulating 3-pane-glazing, HTC = 0,80 W/(m²K)

ROOF:

trapezoidal roof with 30 cm on-roof insulation of the quality 0,035 W/(mK) and insulating the trapezoids, HTC = 0,11 W/(m²K)

BASEMENT CEILING:

22 cm insulation underneath the reinforced concrete ceiling, quality 0,04 W/(mK), HTC = 0,17 W/(m²K)

Building technology

VENTILATION:

central ventilation system with heat recovery functions (85 %), 100 m brine-soil heat exchanger

HEATING:

remaning heating demand and water heating are realized with a condensing gas boiler, supporting the water heating system with a 24 m² solar plant

AIR CONDITIONING:

no active air conditioning

Measured values

AIRTIGHTNESS:

n₅₀ = 0,27 h^-1

Calculated values

HEATING ENERGY NEEDS:

15 kWh/(m²a)

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

80 kWh/(m²a)

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