DGNB

Eisbärhaus Bauteile A+B

At a glance

DGNB Certificate in Platinum

Year of construction: 2019

Valid to: August 2022

Award Climate Positive*

Year of the award: 2020

Valid to: September 2021

Scheme: Buildings in Use, Mixed Use, Version 2019
Location: Kirchheim unter Teck, Germany
Applicant: Grundstücksgemeinschaft Hindenburgstraße 36 + 38 GbR
Client: Grundstücksgemeinschaft Hindenburgstraße 36 + 38 GbR
Architect: BANKWITZ beraten planen bauen GmbH
Energy concept and CO2 balancing: Ingenieurbüro SEEBERGER+PARTNER / BANKWITZ beraten planen bauen GmbH
DGNB Auditor: Auch-Schwelk, Volker for: sustainable strategies
* This award is bestowed for buildings that achieve a negative annual carbon footprint and thus make a significant positive contribution to climate protection. The net carbon footprint assessment is based on the DGNB Framework for Carbon-Neutral Buildings and Sites.
The Eisbärhaus was designed as a passive building comprising two units. Building materials were selected according to guidelines provided by the Austrian environmental association Umweltverband Vorarlberger Gemeindehaus. All exterior walls consist of wooden timbers treated with flocculated cellulose to provide thermal insulation (layer thickness: 42cm). The commercial units are heated or cooled by using a technique called concrete core activation in combination with a reversible brine/water heat pump. Energy is extracted and stored in the ground. The ventilation system in the building is not connected to the heating system. Fresh air drawn into the building from outside is adjusted to room temperature in three steps before it is blown into the interior. To do this, energy from the air being extracted from the building is transferred to the pre-treated fresh air using a heat exchanger (heat recovery rate: 80-95%). The water for domestic use is heated by solar panels. Insofar as possible, electricity needed to operate the heat pump is generated by the solar units. Any systems with a bearing on energy use are managed by special software. The medium-term goal is energy self-sufficiency.

Project evaluation

Total score 95,6 %

Ecological quality: 100,0 %
Economic quality: 100,0 %
Sociocultural and functional quality: 85,33 %

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