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Unlike newly excavated tunnels, old mine tunnels could have served decades of mine life, leading to marginal deformation of surrounding rock that could introduce stress to the lining structure when reformed into LRCs. Second, steel reinforcement has never been considered in these LRC models.
The number of abandoned coal mines will reach 15000 by 2030 in China, and the corresponding volume of abandoned underground space will be 9 billion m 3, which can offer a good choice …
O&M costs for maintaining deep infrastructure, including the ventilation system and the underground structures (shafts, tunnel of access, reservoir) make UPHES less …
Compressed air energy storage (CAES) is a buffer bank for unstable new energy sources and traditional power grids. The stability of a CAES cavern is a key issue to cavern …
Abstract With the rapid development of new energy sources,the compressed air energy storage (CAES) underground caverns,which differ from traditional tunnel conditions,face stability …
Compressed air energy storage (CAES) systems represent a new technology for storing very large amount of energy. A peculiarity of the systems is that gas must be stored …
Determining the airtightness of compressed air energy storage (CAES) tunnels is crucial for the selection and the design of the flexible sealing layer (FSL). However, the …
This study focuses on the renovation and construction of compressed air energy storage chambers within abandoned coal mine roadways. The transient mechanical responses of underground gas storage chambers …
Compressed air energy storage (CAES) in underground mine tunnels using the technique of lined rock cavern (LRC) provides a promising solution to large-scale energy storage. A coupled thermodynamic and thermomechanical modelling for CAES in mine tunnels was implemented. Thermodynamic analysis of air during CAES operation was carried out.
The original cross-section of the mine tunnel measures 4 m by 4 m, with the support zone, the concrete lining, the sliding layer and the steel liner having thickness of 4 m, 0.5 m, 0.01 m and 0.02 m, respectively. This configuration leaves a Ф 2.94 m circular cross-section for air storage.
Underground compressed air energy storage (CAES) in lined rock caverns (LRCs) provides a promising solution for storing energy on a large scale. One of the essential …
Compressed air energy storage (CAES) systems represent a new technology for storing very large amount of energy. A peculiarity of the systems is that gas must be stored under a high …
Additionally, Rotta Loria (2021) evaluated the potential of energy tunnels as underground thermal energy storage systems and discovered that storage efficiencies could …
This paper focuses on the efficacy of so-called energy tunnels (i.e., tunnels equipped with pipe heat exchangers) used for underground thermal energy storage. By harnessing a 3-D thermo …
Compressed Air Energy Storage (CAES) that stores energy in the form of high-pressure air has the potential to deal with the unstable supply of renewable energy at large …
The use of abandoned coal mine tunnels as underground compressed air energy storage (CAES) facilities has garnered significant attention given that it effectively repurposes …
The flexible lined air-tight underground tunnel can be constructed at a comparatively shallow depth and near urban area so that the locally distributed CAES-G/T power generation can be …
The analyses address the impact of different groundwater flow velocities, air temperatures, and airflow velocities on the thermal losses and storage efficiency of energy …
Large scale energy storage (LSES) systems are required in the current energy transition to facilitate the penetration of variable renewable energies in the electricity grids [1, …
The design of storage pressure is an indispensable step for reusing the existing hydropower tunnels into compressed air storage cavern, which directly affects the …
@article{Schmidt2024TechnicalFO, title={Technical feasibility of lined mining tunnels in closed coal mines as underground reservoirs of compressed air energy storage systems}, …
A network of tunnels from an underground coal mine in northern Spain at 450 m depth has been selected as a case study to investigate the technical feasibility of adiabatic …
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