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Coal mine tunnel energy storage system

Numerical analysis of stress and deformation characteristics of

The use of abandoned coal mine tunnels as underground compressed air energy storage (CAES) facilities has garnered significant attention given that it effectively repurposes unused underground space and enhances the efficiency of renewable energy utilization.

Preliminary feasibility analysis of a hybrid pumped-hydro energy

Over the past 50 years (1965–2014), the world cumulatively consumed 235 billion tons of coal, 160 billion tons of oil and 97 trillion cube of gas, leading to massive carbon emissions and causing various types of environmental pollution [1] the framework of the Paris climate agreement, national governments had to take firm actions to increase the share of

Energy from closed mines: Underground energy storage and geothermal

Moreover, the proposed systems can be combined renewable energy storage, such as wind and solar power and with geothermal energy exploitation, taking advantage of the temperature of the deep mine water and also they can be combined with a system of mine water use as a water resource, for drinking supply, agricultural or industrial use.

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 is needed to run

Enhanced evolutionary multi-objective optimization-based dispatch

To this end, we first present a structure for coal mine integrated energy systems by integrating these forms of associated energy together with some flexible load. The multi-objective dispatch model of the system is then derived by considering the economic cost, carbon transaction cost for environment protection and degree of customer

[PDF] Design issues for compressed air energy storage in sealed

This study focuses on the renovation and construction of compressed air energy storage chambers within abandoned coal mine roadways. The transient mechanical is attracting attention as one of large‐scale renewable energy storage systems. Its gas storage chamber is one of key components for its success. The rock around tunnels used for

Journal of Energy Storage

Cao et al. [17] proposed a new type of CO 2 energy storage and power generation system that involves the sealing of CO 2 in abandoned coal mine tunnels and they explained its working principle. Liu [ 18 ] studied the thermodynamic characteristics and thermal economy of a supercritical compressed CO 2 energy storage system that utilizes

Typical scheme of shafts and tunnels network in coal mines

Mining facilities and mine water in underground mines, and biomass in open pit mines, could be used for clean energy production or energy storage systems. Underground mining facilities can be used

A Study on the Transient Response of Compressed Air Energy Storage

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 under a cycle are analyzed through thermal-solid coupling simulations. These simulations highlight changes in key parameters such as displacement,

Efficient utilization of abandoned mines for isobaric compressed

Abandoned mining fields can install photovoltaic and wind power, while underground tunnels can storage energy, transforming abandoned mines into a renewable energy support base with

Technical feasibility of lined mining tunnels in closed coal mines

In this paper, four mining levels in a closed coal mine in the Asturian Central Coal Basin (NW Spain) have been selected as a case study to investigate the technical feasibility of underground compressed air energy storage systems. First, in order to determine the suitable level and type of concrete lining, a numerical model has been established to analyze the

Converting closed mines into giant batteries: Effects of cyclic

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

geomechanical Converting performance mines into of

mines are proposed as pressurized air reservoirs for energy storage systems. A network of tunnels from . 18 . an underground coal mine in northern Spainat 450 m depth has been selected as a case study to . 19 . investigate the technical feasibility of adiabatic compressed air energy storage (A-CAES) systems. The . 20

Energy storage in underground coal mines in NW Spain:

During the last decades, the Asturian Central Coal Basin (ACCB) has been a highly exploited coal mining area by means of underground mining and its network of tunnels extend among more than 30 mines. Parts of this infrastructure will soon become available for alternative uses since most of the coal mining facilities in Spain will fade out in 2018.

Underground Hydro-Pumped Energy Storage Using Coal Mine Goafs: System

Keywords: pumped hydro storage, clean energy, coal mines, feasibility analysis, case study. Citation: Jiang D, Chen S, Liu W, Ren Y, Guo P and Li Z (2021) Underground Hydro-Pumped Energy Storage Using Coal Mine Goafs: System Performance Analysis and a Case Study for China. Front. Earth Sci. 9:760464. doi: 10.3389/feart.2021.760464

Stability analysis for compressed air energy storage cavern with

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

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, called Underground Gravity Energy Storage

Stability analysis for compressed air energy storage cavern

Those abandoned coal mine underground spaces can be re-utilized as energy storage caverns. This can also bring new infrastructure investments and employment opportunities in renewable energy [8,15]. Thus, the re-utilization of abandoned underground coal mine spaces as storage caverns benefits both coal mines and renewable energy industries [9].

A review on the development of compressed air energy storage

The general parameter requirement for energy storage system to participate in power auxiliary service was 10 MW and above, and continuous charge and discharge times were greater than 1 h. More importantly, the huge number of abandoned coal mine tunnels can be an effective solution to the limited availability of salt caverns for the

A Study on the Transient Response of Compressed Air Energy Storage

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

Stability analysis of the underground infrastructure for pumped storage

Mine water in closed underground coal mines can be used for underground pumped-storage hydropower plants. Subsurface energy storage systems require the excavation of a powerhouse cavern and a

Underground Hydro-Pumped Energy Storage Using Coal

Pumped Energy Storage Using Coal Mine Goafs: System Performance Analysis and a Case Study for China. Front. Earth Sci. 9:760464. doi: 10.3389/feart.2021.760464 plants by using underground tunnel/roadway networks of more than 30 closed coal mines in the Asturian Central Coal Basin of Spain. However, the roadway space in a mine is limited and

Underground Hydro-Pumped Energy Storage Using Coal Mine Goafs: System

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

Coupled thermodynamic and thermomechanical modelling for

In light of the assumptions outlined in Section 2.1, the coupled thermodynamic and thermomechanical processes for CAES in underground mine tunnels can be effectively approached using a 2D simulation scheme.However, when considering steel reinforcement, a 3D simulation scheme becomes necessary. Given the symmetry and repetitive characteristics of

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.

Energy storage in underground coal mines in NW Spain:

1 Energy storage in underground coal mines in NW Spain: 10 mining and its network of tunnels extend among more than 30 mines. Parts of this infrastructure will soon become available for

VWRUDJH

existing coal mine tunnels, without optimization and retrofitting, may not meet the stability requirements of compressed air energy storage repositories. Sectional transformation is a retrofitting method with excellent optimization effects. In this study, numerical simulation based on Midas software was employed to create a three-dimensional

Abandoned coal mine tunnels: Future heating/power supply

The CAES plan proposes using the discarded coal mine tunnel as a peaking power station with an energy storage density over 7000 kJ/m 3. It can be concluded that presently abandoned coal mines could be reformed into future energy centers for a city.

Coal mine tunnel energy storage system [PDF]

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