GFZ German research centre for geo sciences

Reallabor GeoSpeicher Berlin

The efficient combination of geothermal seasonal heat storage with regenerative combined heat, power and cooling increases the proportion of regenerative sources in the urban heat supply and thus makes an important contribution to achieving climate targets. A particular challenge is the implementation of such a system in existing district heating structures.

Within the GeoSpeicher Berlin real-world laboratory, a high-temperature aquifer storage system (HT-ATES ) is to be realized at the Berlin Adlershof site. Integration into the existing BTB district heating network is to be demonstrated by means of a large-scale heat pump system andthecoupling with a new cooling network will be set up.

Current information on the work on the research borehole at the Berlin Adlershof site can be found in the following news article: https://www.gfz-potsdam.de/sektion/geoenergie/ueberblick/detailseite-sektionsnews/saisonale-waermespeicherung-in-aquiferen

 

Construction, demonstration and monitoring: An aquifer storage facility consisting of two boreholes, each with a deep pump for pumping and injection on the hot and cold side, will be constructed in the real laboratory and the thermal, hydraulic, geochemical and microbiological interactions caused by storage operation will be investigated.

Optimization of the storage capacity and heat recovery: The storage operation is to be optimized taking into account the energy-related framework conditions of the district heating network (network temperatures and volume flows) and the economic framework conditions of the energy market (e.g. electricity,CO2 and gas prices)

Federal Ministry of Economics and Climate Protection (BMWK), FKZ 03EWR022C

Projektlaufzeit: 15.10.2023-15.10.2027

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