煤矿安全2024，Vol.55Issue(9)：22-29,8.DOI:10.13347/j.cnki.mkaq.20231335
有芯热管对高温煤堆温度场的影响实验研究
Experiment research on the influence of cored heat pipe on temperature field of high temperature coal pile
摘要
Abstract
In order to study the influence characteristics of cored heat pipes on the temperature field of coal pile and the feasibility of preventing the spontaneous combustion of coal pile,the heat transfer law of two kinds of heat pipes with core and without core un-der different heat source temperature conditions was tested by experiments,and the heat transfer effect of different arrangement modes of cored heat pipes on large area coal pile was analyzed by numerical simulation.The results show that under different heat source temperature conditions,the maximum cooling range of cored heat pipe is 130.6 K,and the maximum cooling range of non-cored heat pipe is 118.6 K.The influence of heat pipes on the internal temperature field of coal pile can be divided into three regions according to the distance:high efficiency cooling zone,transition zone and slow cooling zone;the high temperature area inside the coal pile is smaller with triangular tube group arrangement;the best heat transfer effect is obtained when the spacing between tubes is 25 cm;compared with the tube group arrangement,the distance between tubes has more influence on the heat transfer effect of the core heat pipe.关键词
煤自燃防治/热管/热源温度/煤堆/移热效果/温度场Key words
prevention and control of coal spontaneous combustion/heat pipe/heat source temperature/coal pile/heat transfer ef-fect/temperature field分类
矿业与冶金引用本文复制引用
易欣,李煜晗,白祖锦,任瑶,王兴..有芯热管对高温煤堆温度场的影响实验研究[J].煤矿安全,2024,55(9):22-29,8.基金项目
国家自然科学基金资助项目(52074218,52274225) （52074218,52274225）
陕西省教育厅协同创新中心资助项目(22JY041) （22JY041）
