带上盖物业地铁车辆基地高大厂房纵向诱导通风研究

Simulation Study of a Longitudinally Induced Ventilation System in Tall and Large Factory Buildings of the Covered Metro Vehicle Base

针对带上盖物业地铁车辆基地内高大厂房无法采用自然通风且传统横向通风系统设置困难的问题,本文提出采用纵向诱导通风系统的解决方案。建立纵向诱导通风系统的三维模型,根据数值模拟结果分析诱导推射风机安装间距、安装高度等对厂房内流场的影响,并结合工程实际情况进行验证。研究结果表明:运用库内诱导推射风机的安装间距为20 m、安装高度为8 m时,全面通风效果最佳;诱导推射风机的安装间距为25 m,安装高度为6 m时,岗位通风效果最佳,现场测试与模拟结果基本一致。研究结果可以为纵向诱导通风系统在工程中的应用提供理论依据。

This study proposes a solution involving the use of a longitudinally induced ventilation system to solve ventilation challenges in factory buildings within a covered metro vehicle base,where natural ventilation is impractical and traditional horizontal ventilation systems are difficult to implement.We first created a three-dimensional model for the longitudinally induced ventilation system,analyzed the impacts of the induced jet fan installation spacing and height on the airflow within the factory building based on numerical simulation results,and validated the proposed system against actual engineering conditions.The results indicate that the best overall and workstation ventilation effects can be achieved with installation spacings of 20 and 25 m,respectively,along with heights of 8 and 6 m,respectively,for the induced jet fans inside the factory building.The field tests agreed well with the simulation results.This study provides a theoretical basis for the application of longitudinal ventilation systems in engineering applications.