PROJECT DESCRIPTION:

Das Gebäude wurde mit Gas beheizt. Eine Kühlung des Gebäudes im Sommer, war nicht möglich. → The building was heated with gas. Cooling the building in summer was not possible.

1.) The architectural firm Ritter Schumacher AG was commissioned by the building owner to conduct a feasibility study for a building renovation. A dynamic building simulation by ZeroEdition GmbH revealed that, to preserve the building’s value—particularly in view of the anticipated climate changes by 2050—a heating system conversion to renewable energy is essential.

2.) A comparative study based on the HSLU heating cost calculator was prepared by the specialist planner RBT Engineering GmbH. The solution featuring the Energy Cube and brine-to-water heat pumps proved to be the most cost-effective option compared to district heating, deep drilling, air-to-water heat pumps, or wood combustion alternatives.

3.) In accordance with the implementation planning by Ritter Schumacher and RBT, the heating system replacement was carried out by the executing company Willi Gebäudetechnik AG. The Energy Cube was subsequently positioned outdoors adjacent to the parking area, in combination with a new bicycle parking facility, blending harmoniously into the local surroundings

In addition to its economic benefits, the Energy Cube produces no noise emissions and was connected to the energy system within minutes using a single supply and return connection. During heating operation, the Energy Cube draws its energy from the outside air. During cooling operation, it releases excess energy back into the outside air

KEY DATA:

Project type: renovation
Building type: multi-family house
Heat distribution: underfloor heating
Domestic hot water: included
Heat pumps: 2 × SCT. 45 WP 86.7 kW
Energy Cube: H2-Type1
Heating capacity: 76 kW
Cooling capacity: 73 kW
Implementation year: 2025

Neue-Welt-Gasse, Vienna

Austria