热害矿井采区大焓差降温系统实验研究  

Experiment of large enthalpy difference cooling device in mining area of thermal hazard mines

作　　者：王文龙[1] 岳丰田 高涛 魏京胜[3] 郝永军[4] 付京斌[4] WANG Wenlong;YUE Fengtian;GAO Tao;WEI Jingsheng;HAO Yongjun;FU Jingbin(State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China;School of Materials and Physics,China University of Mining and Technology,Xuzhou 221116,China;Jizhong Energy Fengfeng Group Co.,Ltd.,Handan 056107,China)

机构地区：[1]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221116 [2]中国矿业大学力学与土木工程学院,江苏徐州221116 [3]中国矿业大学材料与物理学院,江苏徐州221116 [4]冀中能源峰峰集团有限公司,河北邯郸056107

出　　处：《煤炭工程》2023年第4期156-161,共6页Coal Engineering

基　　金：国家自然科学基金资助项目(51978653);冀中能源峰峰集团二○二○年科学技术项目(2020320032、2020320085)。

摘　　要：基于热质交换原理与实验理论,设计了大焓差降温除湿实验系统,实验研究不同喷淋压力、气水比、喷水温度下对喷和顺喷的大焓差降温装置降温效果及其热工性能,结果表明大焓差降温装置的适应性强,可满足不同热害程度的采区降温需求。计算了热交换系数和热交换效率,结果表明,对喷方式的热交换效率和热交换系数分别为0.952和0.988,而顺喷方式的热交换效率和热交换系数分别为0.936和0.978。综上,喷嘴对喷方式降温除湿效果稍优于顺喷方式。并由实验数据拟合得到大焓差降温装置的对喷和顺喷的热交换效率系数及热接触系数的经验公式,可更精准的指导热害矿井采区降温工程与大焓差降温装置的设计。Based on the experiment theory and heat and mass transfer theory,the large enthalpy difference cooling and dehumidification experiment system is designed,to study the cooling effect and thermodynamic performance of large enthalpy difference device in counter spraying and downstream spraying mode,under different spray pressure,gas-water ratio,and water temperature.The results show that large enthalpy difference cooling device is of strong adaptability,which can meet the cooling demand of mining area with different thermal damage.The heat exchange coefficient and efficiency are calculated.The results show that the heat exchange efficiency and heat exchange coefficient of the counter spraying method are 0.952 and 0.998,respectively,while those of the downstream spraying method are 0.936 and 0.978,respectively.Consequently,the cooling and dehumidification effect of counter spraying is slightly better than that of downstream spraying.And the empirical formula of heat exchange efficiency coefficient and heat contact coefficient of large enthalpy difference cooling device is obtained by fitting the experimental data,which can more accurately guide the design of cooling project of mining area in thermal hazard mine and large enthalpy difference cooling device.

关 键 词：大焓差降温装置 气水比 热交换效率系数 热接触系数 

分 类 号：TD727[矿业工程—矿井通风与安全]