井下水力通风换热机温升效果研究

越来越多的金属矿山进入深部开采,面临地下热害和通风方面的双重困难。利用温差能驱动通风的原理,提出利用水力通风换热机将地下热水的势能和热能转换为风流的动能和内能,并利用MATLAB进行相关数值模拟研究,优化相关参数。结果表明:升温效果与地下热水水头、换热机进风温度、地下热水温度和换热高度等呈现正相关关系,且影响因素排序为地下热水水头>换热机进风温度>地下热水温度>换热高度;换热机在热水水头为260 m、地热水温度为55℃、空气初始温度为24℃的外在条件下,风量达54 m^3/s,出风温度升高约为10℃。

Study on Temperature Effect of Hydraulic Ventilation Heat Exchanger in Mine

More and more metal mines come into deep mining,which are faced with double difficulties in thermal groundwater hazards and ventilation.Based on the principle of temperature difference driving ventilation,it is proposed to transform the potential energy and heat energy of underground hot water into the kinetic energy and internal energy of air flow by using a hydraulic ventilating heat exchanger,and the related numerical simulation was made by MATLAB,and the related parameters were optimized.The results show that the heating effect is positively related to the head of thermal groundwater,the inlet temperature of the heat exchanger,the temperature of the thermal groundwater and the height of heat exchange.Its importance ranks as the head of thermal groundwater,followed by the temperature of the heat exchanger,the temperature of the thermal groundwater and the height of the heat exchange.Under the external condition that the head of thermal groundwater 260 m,the temperature of geothermal water at 55 ℃,and the initial temperature of air at 24 ℃,the air volume of the heat exchanger reached 54 m3/s,and the temperature of air outlet is about 10 ℃.