对高海拔公路隧道风机选型的探讨

Discussion on Selecting Type of Jet Fan Operated in High-Altitude Road Tunnel

风机在公路及铁路隧道的机械通风中占有非常重要的地位 ,风机的功率计算及选取都对隧道的机械通风产生重要的影响 ,特别是当隧道处在海拔较高的地方时 ,由于空气密度的变化 ,将影响风机的功率及风机的选型。正确的风机功率选取及风机叶片角度设定不仅使风机能充分发挥功能 。

Jet fan is the key equipment for the ventilation system of road and railway tunnel. The calculation and selection of fan power is very important, especially when fan operates in high altitude tunnel. The air density will influence the selection of fan. The correct selection of fan power will save both operation cost and fan cost.