System of devices for accumulation of excess heat in the natural water-permeable layer and for its recovery – modeling results
- 1AGH University of Krakow, Faculty of Drilling, Oil and Gas, Department of Petroleum Engineering, Poland
- 2AGH University of Krakow, Faculty of Geology, Geophysics and Environment Protection, Department of Energy Resources, Poland
A system of devices for accumulating excess heat in a natural water-permeable layer and for its recovery, applicable in underground heat storage, especially in its effective use, is presented. This system ensures high efficiency and low thermal inertia, and at the same time eliminates the disadvantage of the known method of storing heat in natural water-permeable layers - Aquifer Thermal Energy Storage (ATES), which consists in the impossibility of using it in water-permeable layers with low water content or with significant dynamics of water flow in the area designated as heat storage.
The system of devices for accumulating excess heat in the natural water-permeable layer and for its recovery is a heat accumulator filled with water, which is a closed area separated from the water-permeable layer using anti-filtration walls, which are also a thermally insulating partition.
The system includes a surface heat exchanger and extraction and discharge wells located in the battery area, used to accumulate and remove heat, equipped with deep-well pumps. The extraction and discharge wells also contain multi-level temperature and water level measurement probes, signal-connected to the control, measurement, and control equipment that controls the operation of deep-well pumps and controllable valves located on the hydraulic lines connecting the well system with the heat exchanger.
The solution can be used as a seasonal heat and/or cold storage using geotechnical structures such as sheet piling, as well as a dedicated solution for storing excess heat/cold to support existing urban heating systems.
The device concept has obtained the European patent EP4063780B1.
The results of modeling the heat storage operation performed in the Petrel and Eclipse software by Schlumberger are presented.
How to cite: Solecki, M. L., Solecki, T., Stopa, J. M., Wiśniowski, R., Hajto, M., and Smulski, R.: System of devices for accumulation of excess heat in the natural water-permeable layer and for its recovery – modeling results, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-6643, https://doi.org/10.5194/egusphere-egu24-6643, 2024.
