Apparatus for discharging fire extinguishing agent to environment of e.g. tunnel during firefighting, has axial flow jet fans that are connected to extinguishing agent source through supply conduits for jet flow of extinguishing agent
DE102012207962A1
Suspension assembly for mounting jet fan on ceiling e.g. tunnel ceiling, has fan axis whose azimuth angle of front mounting location is identical to azimuth angle of rear mounting location
DE102010034241A1
Ventilator e.g. jet fan, for use in motor car tunnel, has fan impeller with drive shaft driven by drive unit to provide air flow in longitudinal direction of tunnel, and generator unit for converting rotational energy into electrical energy
