Overview of converting abandoned coal mines to underground pumped storage …
Therefore, Underground Pumped Storage Power Plants (UPSP), as first introduced in the early 20th century by Fessenden [11], offer a viable solution that capitalizes on the utilization of abandoned underground spaces and effectively circumvents topographical constraints and limitations associated with surface footprint [5, 12]. ...
International Mine Water Association
Reutilization of mine water as a heat storage medium in abandoned mines. Florian Hahn1, Gregor Bussmann, Felix Jagert1, Roman Ignacy, Rolf Bracke1, Torsten Seidel2. 1Bochum University of Applied Sciences, International Geothermal Centre (GZB), Lennershofstr. 140, 44801, Bochum, Germany, ˜ orian.hahn@hs-bochum .
A Study on the Transient Response of Compressed Air Energy …
This study focuses on the renovation and construction of compressed air energy storage chambers within abandoned coal mine roadways. The transient …
Sustainability evaluation model of geothermal resources in abandoned coal mine …
This study presents a sustainability evaluation model of geothermal resources in abandoned coal mine. In this model, the volume and spatial distribution of fractures were calculated based on the volume of the mined-out area and the strength of roof rock. Then, a dual porosity numerical model is developed to assess the potential of the …
Stability analysis for compressed air energy storage cavern with initial excavation damage zone in an abandoned mining tunnel …
Stability analysis for compressed air energy storage cavern with initial excavation damage zone in an abandoned mining tunnel Journal of Energy Storage 10.1016/j.est.2021.103725
Thermodynamic Analysis of Compressed Air Energy Storage (CAES) Reservoirs in Abandoned Mines …
Appl. Sci. 2021, 11, 2573 3 of 19 in Germany to install an A-CAES plant with a storage capacity of 360 MWh and output power of 90 MW [2]. In this paper, abandoned mines are proposed as underground ...
Turning abandoned mines into batteries | IIASA
A novel technique called Underground Gravity Energy Storage turns decommissioned mines into long-term energy storage solutions, thereby supporting the sustainable energy transition. …
Stress redistribution in a multilayer chamber for compressed air energy storage in abandoned …
Compressed air energy storage (CAES) is attracting attention as one of large-scale renewable energy storage systems. Its gas storage chamber is one of key components for its success. A successful utilization of an abandoned coalmine roadway depends on the stability of the gas storage chamber.
Thermodynamic Analysis of Compressed Air Energy …
Underground space from abandoned mines can be used as underground reservoirs for underground pumped storage hydropower (UPSH) and compressed air energy storage (CAES) systems …
Abandoned Mine Shafts Can Use Gravity to Turn Them Into Giant Batteries
Roger Arnold on Feb 11, 2023. The authors of the paper estimate gravity batteries like the one above could operate at a cost of between USD $1 and $10 per Kilowatt-hour with the capacity to generate from 10 to 70 Terrawatt-hours of electricity. That''s got to be wrong. An operating cost of $1 to $10 per kWh produced -- it that''s what it''s ...
Abandoned Mine Pits and Underground Tunnel-based Pumped Hydro Storage …
This paper presents a preliminary design for abandoned mine pits-underground tunnel-based pumped hydro storage (PHS) system. In the design, the continuous abandoned mining pits along large runoff rivers can be utilized as the PHS upper reservoirs. With the mature shield machine or tunnel boring machine (TBM) …
Coupled thermodynamic and thermomechanical modelling for compressed air energy storage in underground mine tunnels …
Qin and Loth (2021) 17 indicated that, economically, CAES with abandoned oil/gas wells or coal mines can be a strong candidate for the large-scale energy storage for wind energy. Moreover, underground mining leaves substantial tunnels abandoned by the closure of mines.
Stability analysis for compressed air energy storage cavern with initial excavation damage zone in an abandoned mining tunnel …
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 safety. However, the stability of a cavern from an abandoned mining …
Smart microgrid construction in abandoned mines based on gravity energy storage…
The share of new energy in China''s energy consumption structure is expanding, posing serious challenges to the national grid''s stability and reliability.As a result, it is critical to construct large-scale reliable energy storage infrastructure and smart microgrids. Based on the spatial resource endowment of abandoned mines'' upper and …
Installation of a thermal energy storage site in an abandoned mine …
As part of the new French law on energy transition, the Demosthene research project is studying the possibility of reusing old abandoned mines to store thermal energy in the Picardy region. The aim is to store the heat required for a small collective unit, which corresponds to a volume of water of 2000–8000 m3, depending on the temperature …
Three-dimensional thermo-mechanical analysis of abandoned mine drifts for underground compressed air energy storage…
Compressed air energy storage (CAES) is a large-scale energy storage technology that can overcome the intermittency and volatility of renewable energy sources, such as solar and wind energy.Although abandoned mines can be reused for underground CAES of large scale, their feasibility requires further investigations. ...
Three-dimensional thermo-mechanical analysis of abandoned mine drifts for underground compressed air energy storage…
Fig. 2 is a schematic diagram of CAES constructed by an abandoned mine tunnel. For example, Xu et al. [17] established a three-dimensional model for the 60 MW CAES project of an abandoned coal ...
How abandoned mines can become clean energy storage systems
An international team of researchers has developed a novel way to store energy by transporting sand into abandoned underground mines. The new technique, …
Thermodynamic Analysis of Compressed Air Energy Storage (CAES) Reservoirs in Abandoned Mines Using Different Sealing …
PDF | Million cubic meters from abandoned mines worldwide could be used as subsurface reservoirs for large scale energy ... scale energy storage systems. A 200 m 3 tunnel in an aban doned coal ...
Abandoned coal mine tunnels: Future heating/power supply centers …
Luo et al. [79] proposed the early idea of using abandoned coal mines for energy storage to address the need for grid peaking and valley filling in the urbanization of developed mining areas in ...
Three-dimensional thermo-mechanical analysis of abandoned mine drifts for underground compressed air energy storage…
For field tests, two small scale pilot testings utilizing abandoned mine as storage cavern were conducted in Japan in 2001, with a total volume of 1600 m 3 [21]. Some pilot caverns for CAES were built to study the thermodynamic process or mechanical responses, as reported pilot testing of underground lined rock caverns for CAES in South …
Coupled thermodynamic and thermomechanical modelling for …
Compressed air energy storage (CAES) in underground mine tunnels using the technique of lined rock cavern (LRC) provides a promising solution to large …
Exploring the use of deep level gold mines in South Africa for underground pumped hydroelectric energy storage …
The fact that the hard rock formations are overlain by soluble dolomite may be even more important. Chemical dissolution of the dolomite ("Malmani Dolomite" see Fig. 1) over millions of years resulted in voluminous underground cavities and caves interconnected by fractures, fissure, faults, and dissolution slots in which large volumes of …
Obstacle identification for the development of pumped hydro storage using abandoned mines…
DOI: 10.1016/j.est.2022.104022 Corpus ID: 245996641 Obstacle identification for the development of pumped hydro storage using abandoned mines: A novel multi-stage analysis framework The renewable energy+energy storage model has an important role to …
Hydraulic Characteristics Analysis of Double-Bend Roadway of Abandoned Mine Pumped Storage …
Sustainability 2023, 15, 3958 3 of 15 2. Numerical Model of the Double-Bend Roadway in Abandoned Mine 2.1. The Establishment of the Geometric Model Due to the needs of mining, the roadway of abandoned mines have different shapes and many bends, and the
Abandoned Mine Pits and Underground Tunnel-based Pumped …
Abstract: This paper presents a preliminary design for abandoned mine pits-underground tunnel-based pumped hydro storage (PHS) system. In the design, the …
Technical feasibility of converting abandoned calcite mines into lined rock caverns for underground hydrogen storage …
Abandoned calcite mines with poor surrounding rock quality need to be supported. • Quasi-3D energy storage tunnel simulation is used to assess stability. • Reinforced UHPC support LRC can ensure stability in shallow burial areas.
Technical feasibility of lined mining tunnels in closed coal mines as underground reservoirs of compressed air energy storage …
Stability analysis for compressed air energy storage cavern with initial excavation damage zone in an abandoned mining tunnel J. Energy Storage, 45 ( 2022 ), Article 103725 View PDF View article View in Scopus Google Scholar
Abandoned coal mine tunnels: Future heating/power supply …
We have studied three plans for re-use of the abandoned mine roadway tunnels as an energy center. These are the thermostat plan, the thermal accumulator plan, and the CAES plan. Calculations show that the thermostat plan can provide over 15,000 m 2 of building air-conditioning/heating load for each kilometer of roadway, but electric power …
