公路隧道射流风机设计和选型综述

A Summary of Design and Type Selection of Jet Fan in Highway Tunnels

系统叙述了射流风机推力计算的公式及其工作点与普通轴流风机的主要区别 ,讨论了射流风机设计参数确定方法和设计要点 ,推导了射流风机的相似设计公式 。

The differences of the calculation of thrust forces and the design points between jet fans and common axial-flow fans are presented detailedly in this paper. Procedures to compute total pressure and flow rate of jet fans and key points in designing are discussed. Modeling design equations about jet fans deduced, and advantages of reversible jet fans used in ventilation systems in a tunnel and major changes of jet fan used in high altitude areas are also introduced.