Five revolutionary technologies that can turn coal mines into engines of sustainable energy will be explored in this article. Solar thermal, compressed air energy storage (CAES), mini-hydraulics, gravity underground energy storage (GES) and hydrogen production will be the protagonists of this journey into the future.
The utilization of Underground Pumped Storage Power Systems (UPSP) addresses the growing need for energy storage in the face of increasing intermittent energy
In particular, underground pumped hydroelectric energy storage systems (UPHS) constitute efficient and flexible alternatives to deal with intermittent renewable energy sources. In this work, a UPHS is designed using the mine water and the voids of a closed coal mine in Asturias (North-west Spain) as a lower reservoir.
Open cut & underground coal mining operations generate significant amounts of waste gas (primarily methane). Traditionally, this potent greenhouse gas has been vented or flared,
This paper aims at reducing greenhouse gas emissions, which contributes to carbon neutrality, and, at the same time, preventing mine heat disasters and extracting highly mineralized (HM) mine water, so as to realize
Taking a coal mine in the south of Ordos Basin as an example, this study designed a conventional, mine-specific, zero-discharge water treatment process route based on a evaporation–crystallization process. This strategy was tailored to the unique water inflow conditions of the mine.
Closed mines can be used for the implementation of plants of energy generation with low environmental impact. This paper explores the use of abandoned mines for
The International Energy Agency recently released its annual report for 2023, which shows that last year the global installed capacity of PV power generation was about 375 GW, a growth of more than 30 % [4,5].Among them, China is the world''s largest PV market and product supplier [].However, most of China''s large-scale PV bases are located in the
Underground pumped storage plants in coal mines (UPSHCM) are a technology that uses abandoned or abandoned wells and goafs after coal mining as underground storage reservoirs, uses electricity to pump water to the upper reservoir during low power load, and then releases water to the lower reservoir at peak power load to produce electricity
Mine water can be a renewable and economical source of geothermal and hydraulic energy. Nine discharges from closed and flooded coal mines in the Laciana Valley
Renewable energy (wind and solar power, etc.) are developing rapidly around the world. However, compared to traditional power (coal or hydro), renewable energy has the drawbacks of intermittence and instability. Energy storage is the key to solving the above problems. The present study focuses on the compressed air energy storage (CAES) system,
Taking a coal mine in the south of Ordos Basin as an example, this study designed a conventional, mine-specific, zero-discharge water treatment process route based on a evaporation–crystallization process. This strategy
Closed mines can be used for the implementation of plants of energy generation with low environmental impact. This paper explores the use of abandoned mines for Underground Pumped Hydroelectric Energy Storage (UPHES), Compressed Air Energy Storage (CAES) plants and geothermal applications.
In particular, underground pumped hydroelectric energy storage systems (UPHS) constitute efficient and flexible alternatives to deal with intermittent renewable energy sources. In this work, a UPHS is designed
Mine water can be a renewable and economical source of geothermal and hydraulic energy. Nine discharges from closed and flooded coal mines in the Laciana Valley (León, NW Spain) have been studied. Various technologies for the energy use of mine water, as well as the influence of factors such as temperature, the need for water
Five revolutionary technologies that can turn coal mines into engines of sustainable energy will be explored in this article. Solar thermal, compressed air energy
In particular, underground pumped hydroelectric energy storage systems (UPHS) constitute efficient and flexible alternatives to deal with intermittent renewable energy sources. In this work,...
The International Energy Agency recently released its annual report for 2023, which shows that last year the global installed capacity of PV power generation was about 375 GW, a growth of more than 30 % [4, 5].Among them, China is the world''s largest PV market and product supplier [6].However, most of China''s large-scale PV bases are located in the
The utilization of Underground Pumped Storage Power Systems (UPSP) addresses the growing need for energy storage in the face of increasing intermittent energy sources. Simultaneously, the closure of mining activities has resulted in vast underground spaces potentially becoming available for alternative purposes. This paper explores the
UPHS Plants in Abandoned Mines. Although the underground reservoir in a UPHS plant can be drilled, common underground or open pit mines are proposed for this purpose, as Harza first used in 1960 [16,17,18].Hydroelectric energy can be produced and stored using inactive underground mines, so that pumped storage can be established between a reservoir
This article also proposes the use of the coal mine 500 m deep of Pérronnes-lez-Binche. The mine representation discussed here offers a high energy capacity, but the substantial head drop (from
This unique energy storage solution is to be deployed within 500 m deep mine shafts, along with the VaultOS™ proprietary energy management software, is essential for the Sardinia Government''s targeted conversion of the coal mine to a carbon free technology hub, where the availability of low/zero emissions energy will be a catalyst to attract new industrial
In particular, underground pumped hydroelectric energy storage systems (UPHS) constitute efficient and flexible alternatives to deal with intermittent renewable energy
EDL owns and operates a large portfolio of waste coal mine gas (WCMG) powered stations in Australia. WCMG is produced during the coal mining process as methane gas trapped in coal seams is released. As this product can be a safety hazard and a challenge to mining operations, it is extracted by mine ventilation and coal seam drainage
Various energy storage technologies and risks in coal mine are analyzed. A significant percentage of renewable energy is connected to the grid but of the time-space imbalance of renewable energy, that raises the need for energy storage technologies.
Coal underground thermal energy storage (CUTES) is a form of energy storage that makes extensive use of the underground highways in closed mines as a place to store energy and to offer heating and cooling in the winter and summer months, respectively.
In addition, the technology of using underground coal mine space for energy storage has become an effective means to promote the development of low-carbon clean energy due to its advantages of large space and low mining cost. However, there are still a few hazards and difficulties in its development and use procedures that need to be resolved.
However, the key issues, such as the uneven heat transfer of the system and the corrosion and scaling of the heat transfer medium, need to continue to be addressed. (3) The potential for compressed air energy storage in coal mines' underground spaces is enormous, and it can be used with less costly excavation.
These policy recommendations and changes can provide guidance for the re-use of coal mines for energy storage and promote the development of sustainable energy systems. However, the specific policy framework should be based on local laws and regulations, resources and market demand. 8. Conclusion
Thus, the abandoned mine facilities are efficiently used to generate both electrical and thermal renewable energy. Fig. 5. Combined design of underground energy storage systems (UPHES and CAES) and geothermal utilization in an abandoned underground coal mine.
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