Fulfilment date: 2022 (Several compressors are already integrated. This 2022 target will only be completed until the final figures are available in the course of 2023. They document the actual savings.)
How: The heat recovery system currently consists of a flap in the exhaust air duct. In winter, the machine heat is conducted into the hall, thus saving heating gas; in summer, it is dissipated, thus saving energy for cooling and air-conditioning systems. In order to make the waste heat usable in other parts of the building, heat exchangers are installed on the compressors, which direct the waste heat into the heating return and thus further reduce the demand for natural gas.
Positive effects: In the energy audit the potential electricity savings are estimated at 168,000 kWh per year, which corresponds to the consumption of around 50 private households.