Heat supply in winter
In winter, the groundwater, which is always at an even temperature, is reheated with warmer water from the upper part of the lake and then brought to the required temperature by means of a specially developed HEAT PUMP C in the energy centre. This heat is distributed throughout the building by a storage underfloor heating system built into the concrete core (CONCRETE CORE ACTIVATION E). The waste heat of the building is also almost completely utilised to effectively preheat the fresh indoor air.
Cooling in summer
In summer, the building is cooled via the concrete core activation system by releasing the excess heat to the groundwater and cooling it with water from the deep, cooler layers of the lake without the need for any equipment.
In summer and winter operation, the intelligent control system regulates the system with the help of electricity, heat and cold storage in the building so that the groundwater does not become too warm or the lake can ice up unnaturally.