Bio-cogeneration/geothermal storage system/rainwater

Besides vegetable waste and biomass from the greenhouse, the building will also collect black water (toilet water) and lead it to the co-fermentation plant. In the co-fermentation plant, all biomass will be converted into biogas. This gas will serve as a sustainable fuel for the CHP power installation (bio-cogeneration). The heat that is released in this process will be used to heat tap water as well as the various building areas. Besides generating heat, the CHP power installation will also produce high-quality energy in the form of electricity.
The heat surplus in the summer and the cold surplus in the winter will be stored via a geothermal storage system in thermal masses below the surface. The stored heat will be used in the winter and the stored cold will be used during the summer. The supply and consumption of heat and cold will become even more interesting as an option if the whole surrounding area is involved in the geothermal storage system.
Rainwater will be collected on the roof. The quantity collected – some 4,130 m³ per year – is more than sufficient to supply the greenhouses and flush the toilets. The remainder of the collected water can be used for the washers and various household activities.