摘要
综合管廊属于密闭型地下构筑物,需要设置合理的通风系统。本文以汉中市兴元新区陈仓路综合管廊为研究对象,建立综合舱及电力舱的数值模拟模型,利用ANSYSFLUENT软件研究自然进风、机械排风通风方式下,不同进风温度及换气次数对舱室速度场、温度场的影响。结果表明:各舱室流场形态为入口旋转流和后续活塞流,建议在通风设计时在活塞流管段增加局部扰流措施,强化管廊内的换热效果;综合舱最小通风换气次数应为3次/时,电力舱应为6次/时,以满足舱室温度不高于40℃的要求;拟合不同换气次数下电力舱管廊断面平均温度的计算式,为综合管廊通风系统设计提供参考。
The utility tunnel is an underground closed structure,which needs to be equipped with a reasonable ventilation system.Taking Chencang Road utility tunnel in Hanzhong City as the research object,the numerical simulation models of comprehensive cabin and power cabin are established,and the effects of different inlet temperatures and ventilation rates on cabin velocity field and temperature field under natural inlet and mechanical exhaust ventilation is studied using ANSYS FLUENT software.The results show that the flow field in each cabin is inlet rotating flow and subsequent piston flow,thus it is suggested to add local turbulence measures in the piston flow pipe section in the ventilation design to strengthen the heat transfer effect in the tunnel;the minimum ventilation rates of the integrated cabin and the power cabin shall be 3 times per hour and 6 times per hour respectively to meet the requirement that the cabin temperature is not higher than 40℃;the calculation formulas of the average temperature of the power cabin tunnel section under different ventilation rates are fitted,which provides references for the design of ventilation system of utility tunnel.
作者
陈伟
丁燕
卢柯
尹海国
邓鑫
Chen Wei;Ding Yan;Lu Ke;Yin Haiguo;Deng Xin(Power Construction Corporation of China Northwest Engineering Co.,Ltd.;Xi’an University of Architecture and Technology)
出处
《制冷与空调》
2022年第3期20-25,共6页
Refrigeration and Air-Conditioning
关键词
空调
通风
综合管廊
换气次数
温度场
速度场
air-conditioning
ventilation
utility tunnel
ventilation rate
temperature field
velocity field
