Stadtquartier 2050: Herausforderungen gemeinsam lösen

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Date
2024-10-30
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Hannover : Technische Informationsbibliothek
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Abstract

The project developed climate-neutral energy concepts for 2 urban districts. The concept for Stuttgart’s district Bürgerhospital included geothermal energy and wastewater heat as energy sources, supplying buildings with district heating via a heat pump. PV and PVT collectors, along with green electricity procurement, provided power. Thus, climate neutrality should be achieved in annual balance. Due to delays and a lower soil suitability for geothermal energy, an alternative plan using air-water heat pumps with cooling towers and less PV was created for a part-district. The focus of Überlingen’s district Schättlisberg was on 14 new buildings constructed in the KfW EH 40 Plus standard. New developments in insulation led to higher rentable living spaces. PV and batteries allowed for the use of renewable electricity. District heating is generated by a combination of biomass and natural gas boilers, a natural gas CHP, and a thermal solar field. A three-pipe network allows the return flow from the existing building area to be used as the supply flow for the new development area. Municipal employees exchanged ideas in the city platform. Electricity demand data were clustered for household types. A guideline for climate-neutral energy concepts for residential districts was created. Economic evaluations and life-cycle assessments were conducted for the districts. Property owners of existing buildings in the Überlingen district were motivated to connect to the district heating network. A bonus system was developed to incentivize energy-conscious living behavior. Ideas for energy justice in districts were developed. Four tools were created: the "Quartiers-App" for consumer education, the "GridOptimizer," an AI tool for maximizing PV self-consumption, "Klimaneutral Easy," which evaluates and compares climate-neutral district concepts, and a life-cycle assessment module for a district tool. Measurement concepts for evaluation were planned, tendered, and put into operation.

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CC BY 3.0 DE