热管式矿井通风热能自平衡系统设计与应用

为解决冬季煤矿进风口温度过低不能满足矿井通风安全的问题，利用热管的高效传热性能和等温特性，提出了采用低温相变热管技术通过矿井回风加热矿井进风的系统设计。根据热平衡理论对矿井回风中的有效利用热量进行理论分析，得出系统可处理的最低环境温度。结果表明:在矿井回风温度为15℃，相对湿度为90%的条件下，当环境温度高于-17.5℃就能将矿井进风加热至2℃以上。与矿井回风源热泵相比，其120天的运行费用可节约93万元，具有较好的经济效益。可为井筒防冻及矿井回风余热利用系统设计提供参考。

Design and application of heat pipe self-balanced ventilation thermal energy system

The air inlet temperature of coal mine in winter is too low to meet the requirements of mine ventilation safety.In order to solve this problem,based on the efficient heat transfer performance and isothermal characteristics of heat pipes,the low temperature phase change heat pipe technology was presented in this paper using mine exhaust heat of mine air supply system design.According to the theory of heat balance,the theoretical analysis of the effective utilization of heat in the mine return airflow was carried out,and the minimum ambient temperature that the system can handle was obtained.The results show that under the conditions of mine return airflow temperature of 15℃and relative humidity of 90%,when the ambient temperature is higher than-17.5℃,the mine supply air can be heated to above 2℃.Compared with the mine return air source heat pump,its 120 d operation cost can save 930000 yuan,which has better economic benefits.It can provide a reference for system design of shaft antifreeze and mine return air waste heat utilization.