Heat Pump and Rock

The partners of DGE-ROLLOUT used their meeting in the city of Essen to organize fact-finding excursions to the southern Ruhr area.

First, the partner Fraunhofer IEG presented the large-scale high-temperature heat pump at its site in Bochum, which will supply the southern district heating network of the local public heat supplier with mine water heat. The system was developed and purchased as part of DGE-ROLLOUT.

In the Klutert Cave in Ennepetal, the group learned a lot of details about reef formation in shallow seas 300 million years ago. The resulting limestone rocks are found in large parts of northwestern Europe and are often saturated with thermal water that could be used as a heat source through hydrothermal geothermal energy.

In quarries such as in Hagen-Hohenlimburg or even exposed rocks in Neviges, the layers of millions of years can be easily observed, their properties studied and their large-scale distribution determined.

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