燃气管廊内不同通风形式的探究

Study on Different Ventilation Forms in Gas Pipe Gallery

为进一步提高城市地下燃气管廊工程通风品质,文章提出燃气管廊内常规式、偏移式两种通风形式,基于k-ε模型,对燃气舱内气流作出适当的假设,模拟得到夏季工况下舱内气流的速度场、温度场以及空气龄值。研究发现,燃气管廊采用侧送风系统优于常规式送风系统,舱内的通风效果更佳。

In order to further improve the ventilation quality of urban underground gas pipe gallery,this paper puts forward two kinds of ventilation forms,conventional ventilation and offset ventilation.Based on K-εmodel,an appropriate assumption is made for the air flow in the gas tank,and the velocity field,temperature field and air age value of the air flow in the tank in summer are simulated.It is found that the side air supply system is better than the conventional air supply system,and the ventilation effect in the tank is better.