Numerical evaluation of inclined heat pipes on suppressing spontaneous coal combustion

Cheng, Fangqin; Chang, Zhuchuan; Deng, Jun; Nan, Fan; Zhang, Anbang; Li, Bei

doi:10.1007/s00231-020-02819-8

Cited by 11 publications

(1 citation statement)

References 33 publications

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“…Li Bei et al [25] designed a coal-HP physical model that explored the heat transfer ability of HP in coal piles. Cheng Fangming et al [26] established a physical and mathematical model of the action of HP on a coal pile, exploring the influence of the tilt angle of the HP on the internal temperature field of the coal pile. Meng Xi [27] built a coal spontaneous combustion gravity HP thermal energy extraction test bench to explore the impact of different coal pile temperatures and different types of HPs on the temperature field of coal piles.…”

Section: Introductionmentioning

confidence: 99%

Study on the Temperature Field Change Characteristics of Coal Gangue Dumps under the Influence of Ambient Temperature in Heat Pipe Treatment

Tong,

Zhang,

Zhao

et al. 2023

Sustainability

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In order to investigate the influence of ambient temperature on the temperature field of coal gangue dumps governed by heat pipes (HPs), using self-developed heat pipe and intelligent cloud monitoring software, a 1-year field test was conducted in the spontaneous combustion coal gangue dump of Danao liang. This study analyzed the temperature distribution changes of a spontaneous combustion coal gangue dump under different ambient temperatures, as well as the temperature changes of the coal gangue at different time scales. Correlation analysis between ambient temperature and coal gangue temperature was conducted, and a quadratic regression model was established for goodness of fit and significance testing. The results show that ambient temperature affects the distribution of the temperature field of the spontaneous combustion coal gangue dump under the action of the HPs, and the cooling effect on the high-temperature zone is stronger in autumn and winter. The daily change in coal gangue temperature at each measurement point is similar, showing a peak-shaped curve of low at night and high during the day. The inter-day changes of each measuring point have seasonal characteristics: the cooling rate of the high-temperature zone measuring point is affected by the ambient temperature; the seasonal characteristics of the low-temperature zone measuring point are more obvious than the high-temperature zone, and its daily average temperature is affected by the ambient temperature. The ambient temperature and the internal temperature of the coal gangue dump are correlated, and the quadratic regression equation has a high degree of goodness of fit and meets the F-test, indicating that the quadratic regression model can be used for the empirical regression formula of the ambient temperature and the internal temperature of the coal gangue dump. The results of this study provide some references for the sustainable development of mining environments.

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Section: Introductionmentioning

confidence: 99%

Study on the Temperature Field Change Characteristics of Coal Gangue Dumps under the Influence of Ambient Temperature in Heat Pipe Treatment

Tong,

Zhang,

Zhao

et al. 2023

Sustainability

View full text Add to dashboard Cite

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Spatiotemporal evolution of coal spontaneous combustion in longwall gobs: A case study from mining discontinuation to resumption

Qin

Song

Wei

et al. 2020

Energy Science & Engineering

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Coal spontaneous combustion has always been a major issue in mine production, which mainly occurs in longwall gobs. The active functional groups in the coal surface molecules react with oxygen molecules and release heat. [1][2][3] When the oxygen supply is sufficient and the heat storage condition is good, the heat released by the oxidation reaction accumulates continuously and causes the coal temperature to rise. This can ultimately result in spontaneous combustion in the gobs.

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Application of aging effect model in numerical simulation for predicting spontaneous combustion of coal stockpiles

Zhang

Wang

et al. 2022

J Therm Anal Calorim

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Numerical evaluation of inclined heat pipes on suppressing spontaneous coal combustion

Cited by 11 publications

References 33 publications

Study on the Temperature Field Change Characteristics of Coal Gangue Dumps under the Influence of Ambient Temperature in Heat Pipe Treatment

Study on the Temperature Field Change Characteristics of Coal Gangue Dumps under the Influence of Ambient Temperature in Heat Pipe Treatment

Spatiotemporal evolution of coal spontaneous combustion in longwall gobs: A case study from mining discontinuation to resumption

Application of aging effect model in numerical simulation for predicting spontaneous combustion of coal stockpiles

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