Underground Pumped Storage Hydropower Case Studies in
The mine representation discussed here offers a high energy capacity, but the substantial head drop (from about500 to 200 m) challenges the selection of the hydraulic turbomachinery.
Techno-Economic Feasibility Analysis of Pumped Storage
Under the assumed conditions, the plant cycle efficiency increased from 62.7% to 71.5% when the coal seam dip varied from 5 deg to 25 deg. Depending on different price scenarios, when the coal seam inclination was steep enough, the cost of energy storage of a mine-based PSH plant was competitive compared with
How Coal Mines Could Be Turned Into Giant ''Batteries'' for Energy
An international team of scientists recently proposed another innovative and resourceful solution that involves repurposing old mines: Underground Gravity Energy Storage (UGES). They outlined the idea in the journal Energies .
Geothermal energy exploitation and storage in coal field under
The development of geothermal energy in coalfield can not only improve the temperature environment of coal mining, but also turn waste into treasure through the clean utilization of geothermal energy. Especially, it is of great prospect to store energy in the mined-out area of coalfield under the "dual carbon" goal at present. Herein, in this paper, it was
Development and field application of a modified
1. Introduction. Coal is China''s most important energy source, accounting for 67% of the primary energy production and 56.0% of the total energy consumption in 2021 (China N.B. of S, 2021).At present, China''s important coal production areas are mainly concentrated in the several bends of the Yellow River area (Shaanxi, Shanxi, Inner
Turning Old Coal Mines Into Massive Energy-Storage Devices
– The Shen Penn anthracite mine pit, abandoned in the 1960s during the decline of Schuylkill County''s coal industry, is a 230-foot-deep water hole surrounded by mine waste, scrub trees, and a
A new method for exploiting mine geothermal energy by using
The research on mine geothermal energy exploitation has attracted global interest for many years. This paper proposes an innovative new method for geothermal-coal synergetic mining (GE-COSM) to expand the valorization of coal-based solid waste (C-BSW), reduce the environmental damage caused by coal utilization, and achieve a low
New Uses for Coal Mines as Potential Power Generators and Storage
In the context of sustainable development, revitalising the coal sector is a key challenge. This article examines how five innovative technologies can transform abandoned or in-use coal mines into sustainable energy centres. From solar thermal to compressed air energy storage, these solutions offer a path to a more sustainable
Drilling into mines for heat: geological synthesis of the UK
With much still to be investigated on the hydraulic properties and thermal resources of flooded coal mines, this pre- and post-drill geological synthesis of drilling into mines for the Glasgow Observatory boreholes forms a basis for future work, increasing the evidence base around mine water energy for decarbonizing heating and storage towards
Pumped storage hydropower in an abandoned open-pit coal
FIGURE 1. Distribution of abandoned coal mines in China during the years 2014–2018. have been abandoned. According to statistical data from the Chinese Academy of Engineering (Yuan et al., 2018
Optimal dispatching of wind-PV-mine pumped storage power
In addition, with the completion of the underground coal mine reservoir, peak shaving of renewable energy combined with pumped storage of the underground mine reservoir will gradually become a
Preliminary feasibility analysis of a hybrid pumped-hydro energy
In this paper, a hybrid pumped-hydro energy storage system using abandoned coal mine goafs, coupled with wind and solar power was proposed. This
Similar simulation of overburden movement characteristics under
The method of filling mining can solve the problem of surface subsidence caused by coal mining. Among them, it is crucial to study the mechanism of filler strength improvement timeliness and
Review Article Challenges and opportunities of energy storage
The underground space mined from coal mines as energy storage (CUCAES) can not only effectively utilize the original underground space and surface industrial equipment of abandoned mines, but also reduce the price of building a gas storage facility. The creation of compressed air energy storage systems in China
A novel CO2 foaming agent for the preparation of foamed
1. Introduction. As a significant coal mining country, China''s coal energy accounts for about 50% of the country''s total energy [1].However, the increase in demand for coal in recent years has led to frequent accidents at the coal mining face where the roof is broken and the coal blocks fall, forming a large number of high-risk areas [[2], [3], [4]].
Energy storage in underground coal mines in NW Spain:
1. Introduction. In 2015, the world total primary energy supply was 13,647 Mtoe, of which 13.4 Mtoe was from renewable energy sources. Since 1990, renewable electricity generation worldwide grew on average by 3.6% per annum, which is slightly faster than the total electricity generation growth rate (2.9%) [1].So, whilst 19.4% of the global
Applicability of coal slag for application as packed bed thermal energy
Cementitious materials are the main binders used in mine filling and play a critical role in determining the mechanical properties of cemented tailings backfill (CTB). Under the same oxygen concentration, the activation energy of rock/coal mixtures is higher than bituminous coal, and the activation energy of siltstone/coal, mudstone/coal
Preliminary feasibility analysis of a hybrid pumped-hydro energy
DOI: 10.1016/j.apenergy.2019.114007 Corpus ID: 209787284; Preliminary feasibility analysis of a hybrid pumped-hydro energy storage system using abandoned coal mine goafs @article{Fan2020PreliminaryFA, title={Preliminary feasibility analysis of a hybrid pumped-hydro energy storage system using abandoned coal mine goafs},
Research status of comprehensive utilization of coal-based solid
According to relevant research data, the integrated technology of "mining, selection and filling" can reduce coal mine energy consumption by 5 % -10 %, achieve energy savings of about 5 % in power coal preparation plants and about 10 % in coking coal preparation plants. It contains great development potential (Bie, 2023).
Review Article Challenges and opportunities of energy storage
The underground space mined from coal mines as energy storage (CUCAES) can not only effectively utilize the original underground space and surface
Clean energy developer to transform former mine into massive
For the first time, a former coal mine will become a pumped storage hydropower facility thanks to a Florida clean energy company. Rye Development''s Lewis
How to turn coal mines into giant, green batteries
How coal mines could be turned into giant "batteries" for energy storage. Old coal mines can be converted into "gravity
Journal of Energy Storage
A large number of voids from closed mines are proposed as pressurized air reservoirs for 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 compressed air energy storage (A-CAES) systems.
Techno-Economic Feasibility Analysis of Pumped Storage
Coal is the main energy source in many countries [15,16], and after a long period of mining, many of the mineable reserves have tended to be depleted or have been depleted and closed, and these
A novel CO2 foaming agent for the preparation of foamed
A new idea of utilizing CO 2 for coal mine filling application was proposed. This is mainly achieved by developing a new chemical foaming agent (sodium bicarbonate and potassium aluminum sulfate) capable of producing CO 2 for foaming fillings.. The CO 2 foaming agent showed excellent expansion times, positive effect of fire
Overview of converting abandoned coal mines to
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.
Clean energy developer to transform former mine into massive
For the first time, a former coal mine will become a pumped storage hydropower facility thanks to a Florida clean energy company. Rye Development''s Lewis Ridge Pumped Storage Project in Bell County, Kentucky, will be among the first of its kind built in the United States in more than 30 years and the first built on mine land, according
Similar simulation of overburden movement characteristics under
Therefore, it is crucial to study the mechanism of filling mining to control rock movement for filling mining. Many coal mine filling methods have been developed, including hydraulic filling
How Coal Mines Could Be Turned Into Giant ''Batteries'' for Energy Storage
A deeper mine would not only produce and store more energy, but would also be more cost effective. Energy storage costs vary from $1 to $10 per kilowatt-hour for UGES, the authors calculate, downright cheap compared to lithium-ion batteries, which currently cost about $150/kWh. Battery prices continue to fall as chemistries improve,
Stability analysis of the underground infrastructure for pumped storage
The unsteady evolution of the air pressure during the filling and depletion processes was simulated to estimate the peak values, which are used to evaluate the mechanical stability of the infrastructure. Energy storage in underground coal mines in NW Spain: assessment of an underground lower water reservoir and preliminary energy
An overview of potential benefits and limitations of Compressed
The compressed air energy storage in abandoned mines is considered one of the most promising large-scale energy storage technologies, through which the existing underground resources can be not
A brief review of underground coal mine energy storage
Posted on March 20, 2017 by Roger Andrews. As reported in last week''s Blowout the latest solution to the problem of storing intermittent renewable energy for re-use is to convert an underground coal mine into a pumped hydro facility. The mine in question is Prosper-Haniel in the Ruhr region of Germany, which is scheduled to shut down next year.
Research status of comprehensive utilization of coal-based solid
The coal mine filling mining is a key way for the comprehensive utilization of CSW. among which the engineering and technological challenge of "how to realize the low-cost geological storage of super-volume of three wastes (solid, liquid, and gas) in China''s coal mines and the synergistic development of the ecology and the
Frontiers | Underground Hydro-Pumped Energy Storage Using
This paper proposes to use abandoned coal mine goafs serving as large-scale pumped hydro storage (PHS) reservoir. In this paper, suitability of coal mine goafs as PHS
(PDF) Underground Hydro-Pumped Energy Storage Using Coal Mine
In response to the Paris climate agreement, the Chinese government has taken actions to improve the energy structure by reducing the share of coal-fired thermal power and increasing the use of
Mine Filling
Mining waste utilization: case studies and good practices. Liyuan Wu, Yulin Pan, in Managing Mining and Minerals Processing Wastes, 2023. 12.1.3 Utilization of mine waste rocks. Based on the actual filling demands of Jinchuan Mine, excellent filling aggregate can be obtained when the ratio of mine waste rock to tailings is between 5:5 and 7:3
Energy storage in underground coal mines in NW Spain:
Filling and emptying processes during the operation of the turbine-pump are complex due to the presence of two energy storage, hydropower, coal mining, underground water reservoir. 23 1
Pumped Storage Hydropower in Abandoned Mine
A national-level underground energy storage cloud based on PSH plants in abandoned mine shafts will be built, thereby laying the foundation for large-scale energy storage to meet China''s carbon
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