UFZ EnergyDays 2016 - Session C3

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Exploitation of subsurface resources for thermal and substantial energy storage within the context of the transformation of the energy system

Coordinators and chairpersons: Sebastian Bauer , Uwe Jens Görke, Olaf Kolditz


To overcome the natural temporal fluctuations inherent in the energy production based on certain renewable sources (e.g., wind, photovoltaics) is a requirement for the transition of the energy system towards renewable resources. Energy storage provides a solution to the time shift between energy production and demand. Storage options for renewable energies include the conversion to and storage of secondary energy carriers like compressed air, hydrogen and methane as well as heat, and the geological subsurface holds a large potential of storage capacities, e.g. in salt caverns and porous formations. In the ANGUS+ project the potentials and implications of energy storage in the geological subsurface are investigated.
Within the project, storage formations are characterized by physical and chemical properties, and the processes induced by energy storage applications are parameterized based on literature studies and laboratory experiments. This new parameter database feeds numerical modelling tools developed and implemented within the project to simulate the coupled thermal, hydraulic, mechanical, chemical and microbiological processes induced by subsurface energy storage applications and their interaction with other types of use of the geological subsurface. Based on the enhanced process understanding in the geological subsurface, virtual scenarios of gas storage in salt caverns and deep porous formations as well as scenarios of heat storage in the shallow and moderately deep subsurface are developed. The numerical simulation of energy storage operations helps predicting impacts on protected resources and deducing appropriate monitoring methods.
Contributions to this session address the analysis of several storage options such as gas storage in deep aquifers as well as in salt caverns, and heat storage in shallow geological sites. In addition, aspects of integrated 3D visualization of the considered geotechnical systems will be discussed as well as first concepts of subsurface spatial planning.


11:30 - 12:00 Quantifying induced effects of subsurface renewable energy storage – The ANGUS+ project
Sebastian Bauer1, Andreas Dahmke1, Wolf Tilmann Pfeiffer1, Bo Wang1, Jens-Olaf Delfs1, Anke Boockmeyer1, Steffi Popp1, Dedong Li1, Christof Beyer1
1 Kiel University
12:00 - 12:18 Thermo-mechanical modelling of cyclic gas storage applications in salt caverns
Norbert Böttcher1, Thomas Nagel2, Uwe-Jens Görke2, Olaf Kolditz2
1 Federal Institute for Geosciences and Natural Resources - BGR
2 Helmholtz Centre for Environmental Research - UFZ
12:18 - 12:36 Quantification of storage capacities and withdrawal rates of high-temperature heat storages in the subsurface
Anke Boockmeyer1, Sebastian Bauer1, Christof Beyer1, Meike Hintze1, Kerstin Meier zu Beerentrup1
1 Kiel University
12:36 - 12:54 Impact factors on the long-term economic efficiency and environmental sustainability of borehole heat exchanger systems for the use of shallow geothermal resources
Haibing Shao1, Philipp Hein1, Sophie Schelenz1, Thomas Vienken1, Olaf Kolditz1
1 Helmholtz Centre for Environmental Research
12:54 - 13:12 Data integration workflow and interactive visualization of potential salt cavern regions
Lars Bilke1, Norbert Böttcher2, Michael Nolde3, Malte Schwanebeck3, Rainer Duttmann3, Olaf Kolditz1
1 Helmholtz Centre for Environmental Research
2 Federal Institute for Geosciences and Natural Resources - BGR
3 Kiel University
13:12 - 13:30 Legal options to deal with diverging claims concerning use of underground space
Jana Bovet
Helmholtz Centre for Environmental Research - UFZ