北京新建地铁通风空调系统模拟分析

本研究以北京新建地铁四号线第三标段隧道和车站为对象,借助SES软件,建立数学模型,对两种典型的通风空调系统方案正常工况运行进行数值模拟。分析得出产热量的分布规律;列车行车状况、活塞风井、不同形式车站及区间隧道通风空调系统对隧道内速度场、温度场及新风量的影响规律。研究同时对通风空调系统方案进行了初步的技术经济比较。本研究为分析地铁通风空调系统的空气流动与传热提供了参考,为新建地铁通风空调系统方案的选择、设计及科学地运行管理提供有价值的数据资料。

Simulation Analysis on Ventilation and Air Conditioning System in Beijing Subway

This paper aimed at the ventilation and air conditioning system for subway of two typical design sections in Beijing subway line 4 that is being built.By using the software of SES and the mathematical model,simulation analysis of two feasible ventilation and air conditioning procedures under the normal condition was presented.Also,the heat output and the influence of train run status,piston-action ventilation shaft,different mode of ventilation and air conditioning system for station tunnel on airflow field,temperature distributions and fresh air requirement of subway were investigated.In addition,the characteristics of this two feasible procedures were compared with respect to the technical and economical aspects.This paper would be helpful for the environmental control system of subway.It will also provide valuable data for the choice of preferred plan,rational design and scientific running management of relative systems.