摘要
针对城市地下空间车行系统射流式纵向通风方式进行了阐述。着重讲述了按照安全、卫生、舒适,同时兼顾防火、换气等因素综合确定需风量的计算方法;通过压力平衡方程并结合射流通风单元流动模型,得出了射流风机的组合设计;最后通过车行系统通风实例计算,来选定风机型号及数量。其成果可为同类型工程通风计算提供参考。
This paper sets forth the jetting longitudinal ventilation mode of urban underground space transportation system, and focuses description on the calculation method of air volume comprehensively determined according to the factors of safety, sanitation, comfort and simultaneously considering the fire,ventilation and etc. Based on the pressure balance equation and the jetting ventilation unit flow model, the composite design of jet fan is given. And finally, the calculation of ventilation of transportation system selects and determines the type and number of fan, which can be referred for the calculation of air volume of the similar projects.
出处
《城市道桥与防洪》
2014年第2期160-162,15,共3页
Urban Roads Bridges & Flood Control
关键词
地下空间
通风方式
热压
临界风速
underground space,ventilation mode,heat pressure,critical velocity
