Mine-oriented low-enthalpy geothermal exploitation: A review from spatio-temporal perspective

Chu, Zhaoxiang; Dong, Kaijun; Gao, Penghui; Wang, Yijiang; Sun, Qiang

doi:10.1016/j.enconman.2021.114123

Cited by 31 publications

(12 citation statements)

References 89 publications

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“…Therefore, the mining industry is paying more and more attention to the exploitation and utilization of geothermal energy in mining areas [12,13]. The extraction of geothermal energy can facilitate mine cooling, and geothermal water is a stable and low-enthalpy resource [14] that has great potential for providing thermal energy for the daily heat load of the mine [15].…”

Section: Introductionmentioning

confidence: 99%

Feasibility Investigation of Geothermal Energy Heating System in Mining Area: Application of Mine Cooling and Aquifer Thermal Energy Exploitation Technique

Ding,

Zhang,

et al. 2024

Energies

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Mine heat hazards have resulted in large amounts of high-quality coal resources in deep that cannot be mined. The mining industry is paying more and more attention to the extraction and utilization of geothermal energy in mines, while at the same time reducing the underground temperature to realize co-extraction of coal and heat. In addition, coal mines tend to burn large amounts of coal to heat mine buildings and provide hot water for workers’ daily baths, creating operating costs and increasing greenhouse gas emissions. Therefore, it is of great significance to investigate the feasibility of extracting geothermal energy to provide the daily heat load for mines. Currently, there is little research on the feasibility of geothermal energy extraction and utilization in productive mines instead of abandoned mines. In this study, according to the actual situation of Xinhu mine in eastern China, a combined geothermal water system and heat-pump heating system is proposed, aiming to effectively realize mine cooling and geothermal exploitation and utilization. The geothermal storage capacity in the area is analyzed, and an economic analysis is developed. The economic analysis indicates that the main factors affecting the feasibility of the system are the number of mine users, the distance from the geothermal production well to the mine buildings, and the coal price. The research shows that the economic efficiency of the system is better when the heating scale is larger and the distance is smaller. As coal prices rise, the combined geothermal water and heat-pump heating system will be more economical than traditional coal heating. If a mine has 2000 workers, the application of this system can prevent 334.584 t of CO2 emissions per year.

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Section: Introductionmentioning

confidence: 99%

Feasibility Investigation of Geothermal Energy Heating System in Mining Area: Application of Mine Cooling and Aquifer Thermal Energy Exploitation Technique

Ding,

Zhang,

et al. 2024

Energies

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“…As time passes after the closure of a mine, it becomes difficult to carry out proper studies and analyses. Materials documenting water conditions and the layout of workings are lost and forgettable [26].…”

Section: Introductionmentioning

confidence: 99%

Mine Water as Geothermal Resource in Nowa Ruda Region (SW Poland)

Chudy

2022

Water

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The Lower Silesian Coal Basin in south-western Poland was a region of intensive coal mining until the late 1990s. After mining was stopped and the mines were closed, the underground workings were flooded. This created an underground reservoir of waters that can be economically managed to supply energy, using heat pumps, to the town of Nowa Ruda. The article analyses the energy potential of these waters. It was shown that open loop with reinjection system based on mine shafts can provide 10 GWh of geothermal energy while reducing emissions from 4.27 tCO2 to 0.22 tCO2. In addition, 2.09 GWh can be extracted from water flowing out of mine shafts via adits. As a final result, this will lead to improve air quality as well as increase the environmental value of the region. These results can act as a reference tool for local government, specialists in energy policy at the local scale. They are also the basis for future work aimed at acquiring external funds to carry out detailed studies of the condition of mine shafts, geothermal profiling of water in sunken shafts and test pumping, which will make it possible to determine the real quantities of water to be used.

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“…Depending on its qualities, geothermal energy can be utilized for district heating, or harnessed to provide sustainable electricity [4]. Lower enthalpy geothermal energy is frequently useful for direct usage (for example, room heating, tourism, agriculture, agroindustry, and fisheries) [4][5][6][7]. Meanwhile, geothermal energy with medium to high enthalpy can be utilized to generate electricity [8], which is common in active tectonics locations [9].…”

Section: Introductionmentioning

confidence: 99%

Unearthing the Dynamics of Indonesia’s Geothermal Energy Development

Yudha

Tjahjono

2022

Energies

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Indonesia has one of the world’s biggest geothermal energy reserves, accounting for 28.61 Gigawatts of electric energy (GWe). However, as of 2022, the installed geothermal capacity in Indonesia was only around 2.175 GWe, just 7.6% of its estimated potential. Geothermal energy development is required for Indonesia to empower sustainable energy systems and achieve its target of reaching 7.2 GW of geothermal energy by 2025. The geothermal energy sector is viewed as a complex dynamic system, with complicated challenges, including technical, financial, infrastructure, and many other issues. The purpose of this paper is to understand the complex nature of geothermal systems in Indonesia. To that end, this paper examines the geothermal development from a systematic and holistic standpoint, employing the interview technique to enable the conceptualization of the geothermal systems using the system dynamics (SD) approach. The SD model exhibits several underlying and important factors influencing the development of geothermal energy in Indonesia, such as capital investment, the collection of upstream data to reduce risk, infrastructure construction, pricing, incentives, permit procedures, environmental concerns, and public acceptance.

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Mine-oriented low-enthalpy geothermal exploitation: A review from spatio-temporal perspective

Cited by 31 publications

References 89 publications

Feasibility Investigation of Geothermal Energy Heating System in Mining Area: Application of Mine Cooling and Aquifer Thermal Energy Exploitation Technique

Feasibility Investigation of Geothermal Energy Heating System in Mining Area: Application of Mine Cooling and Aquifer Thermal Energy Exploitation Technique

Mine Water as Geothermal Resource in Nowa Ruda Region (SW Poland)

Unearthing the Dynamics of Indonesia’s Geothermal Energy Development

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