深井热湿环境下矿用空冷器传热性能

摘要

通过实验设备模拟了矿用空冷器在某工况下的工作性能并计算出其工作效率；通过 Gambit 软件建立了该空冷器热湿传递的物理模型，运用 Fluent 软件对其进行了数值模拟。改变空气进口温度和速度，得出不同工况下空气的出口温度及空冷器的效率值，结果表明：当风速一定时，空冷器出口温度随空气进口温度的升高而相应升高，且出口温度变化梯度小于进口温度变化梯度，空冷器效率有较明显的增加；当空气进口温度一定时，风速的增加使得空气出口温度小幅增加，空冷器效率有所下降。%To study the working efficiency of the mine air cooler under no -load condition,the experiment is carried out to simulate the mine air cooler’s performance under a certain condition,and the working efficiency is calculated.The modeling of the air cooler is simplified with the software GAMBIT,and numerically simulated by the software Fluent.Changing the inlet air’s temperature and velocity,the outlet air’s temperature and the efficiency of the air cooler are calculated under different working condition.Results show that with the increasing of the inlet air’s temperature,the outlet air’s temperature is increased correspondingly,and the outlet air’s temperature gradient is less than the inlet temperature gradient,which makes the air cooler’s efficiency increased obviously;When the inlet air’s temperature is constant,the increasing of the air speed causes the outlet air’s temperature to increase slightly,thus the air cooler’s efficiency reduces slightly.