Numerical Simulation on Cooling Effect of Working Face under Radiation Cooling Mode in Deep Well

Zhang, Xiaoyan; Ke, Yaping; Du, Qiangqiang

doi:10.3390/en14154428

Cited by 6 publications

(2 citation statements)

References 16 publications

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“…Yi et al [ 11 ] analyzed the dynamic mechanism of tunnel AFT with the seasonal variation by the measured temperature distribution. Zhang et al [ 12 ] proposed a simulated model of the heat transfer at three-dimensional scale based on the radiation cooling mechanism, and analyzed the influence of the inflow parameters on AFT. Moreover, it was found that the stratified rock can lead to the significant difference in the temperature field, compared with the homogeneous assumption [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Sensitivity analysis of heat and mass transfer at working face in high-temperature mine

Zhou,

Zhang,

Zhang

2024

PLoS ONE

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Thermal damage from heat sources severely affects the safety of deep mine production. Heat and mass transfer between heat sources and airflow leads to the increase of the airflow temperature (AFT), moisture content of airflow (AFMC) and relative humidity of airflow (AFRH). This study aims to quantify uncertainty contributions of the working face parameters on AFT, AFMC and AFRH and find their main contributors. The flow, geometric and physical parameters are chosen as uncertainty sources. Subsequently, Sobol indices are obtained using the point-collocation non-intrusive polynomial chaos method, denoting the sensitivity of each input parameter. It was found that the inflow wind temperature and the wind velocity are two top factors influencing AFT and AFMC, while relative humidity of inflow wind and the wind velocity are two top factors influencing AFRH. In the single factor analysis, the uncertainty contributions of the inflow wind temperature on AFT and AFMC, and relative humidity of inflow wind on AFRH can exceed 0.7, which is higher than those of the wind velocity. The geometric parameters of the working face, namely the length, width and height, and ventilation time are also significant quantities influencing AFT, AFMC and AFRH. Compared to AFT and AFMC, two other significant quantities influencing AFRH are the thermal conductivity of coal and the original temperature of the rock.

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Section: Introductionmentioning

confidence: 99%

Sensitivity analysis of heat and mass transfer at working face in high-temperature mine

Zhou,

Zhang,

Zhang

2024

PLoS ONE

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“…He et al [9], based on the specific engineering background of Jiahe Coal Mine, proposed for the first time the establishment of a new cooling system with underground water inflow as the cold source, and innovatively proposed the high-temperature exchange machinery system (HEMS) and equipment. Zhang et al [10] established a three-dimensional heat transfer model of the working face, and they found that the greater the distance from the air flow inlet, the more obvious the cooling effect. Pokhrel et al [11] proposed that solar energy be used to deploy ice storage systems, and the ice generated can be used for cooling in deep mines through different heat exchangers.…”

Section: Introductionmentioning

confidence: 99%

Influencing Factors of a Cooling System Based on Low-Temperature Mine Water as a Direct Cooling Source

Jiang¹,

Cui²,

Mu³

et al. 2022

Energies

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With the depletion of shallow metal mineral resources, deep mining has become more common. In the process of deep mining, heat hazards in mines seriously threaten the health of personnel and the safety of mining operations. According to the flow and low-temperature characteristics of abundant water in Maoping Lead Zinc Mine, this paper proposes the direct use of the low-temperature water inflow of the mine as the cold source by which to conduct the heat exchange with a single spiral-tube heat exchanger for mine cooling. An experimental platform was built for the cooling system to allow us to explore the mechanism of the influence of the inlet air volume and air temperature and the inlet water temperature and flow on the cooling effect of the single spiral-tube heat exchanger. It was found that with the increase in the inlet air volume and inlet water temperature, the cooling efficiency of the heat exchanger decreased, while with the increase in the inlet air temperature, the cooling efficiency of the heat exchanger increased. Within the experimental range, 127.2 m3/h was found to be the optimum inlet air volume, and 33.0 °C was the most appropriate inlet air temperature; the water temperature of Maoping Coal Mine is about 20 °C throughout the year, and the industrial test site can reduce the wind temperature of 31.5 °C to 23.9 °C. The inlet water flow is positively related to the cooling effect. With the increase in the water flow, the outlet temperature of the air flow at each working point was continuously reduced, and the cooling effect of the heat exchanger was improved. The moisture content of the inlet air flow can be reduced by increasing the low-temperature inlet water flow. Through experiments, the feasibility of the cooling system that directly uses the mine’s low-temperature water as the cold source was verified. A multiple linear regression analysis equation for the cooling system model is proposed, which provides a reference for formulating effective measures to prevent and control heat hazards in mines.

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A review of the research progress of cooling technology in deep mining

Qu,

Zhang,

Zhang

et al. 2024

J Therm Anal Calorim

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Numerical Simulation on Cooling Effect of Working Face under Radiation Cooling Mode in Deep Well

Cited by 6 publications

References 16 publications

Sensitivity analysis of heat and mass transfer at working face in high-temperature mine

Sensitivity analysis of heat and mass transfer at working face in high-temperature mine

Influencing Factors of a Cooling System Based on Low-Temperature Mine Water as a Direct Cooling Source

A review of the research progress of cooling technology in deep mining

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