Fire exhaust fan, said during use, not only to make the appropriate use and maintenance exhaust fan principle, but its performance is fully displayed to improve the efficiency of the fan, so as to increase its scope of application, get authorized users. So we should make energy-efficient exhaust fan fire effect on how the full performance of it, today, as we detail below: For some relationships exist between the different flows, we adjust the way it is divided into several different approaches that regulate the way little impact on energy savings, not only saving even temperature exhaust fan fire, but because of the presence of the device to adjust the power consumption more. Speed ??adjustment curve closer to the ideal curve. Therefore, the speed adjustment method is superior, especially the use of variable frequency motor speed control of energy-saving programs for the best, but the need for additional frequency devices. Fire exhaust fan set Location: Distance tunnel fire exhaust fan should not be too close to the side wall, so as not to affect the ventilation exhaust fan fire tunnel wall arranged for a minimum distance from 20 cm, rescue "sentinel" setting will tunnel into. Disaster different regions, make full use of deviated and both ends of the tunnel exhaust fan fire rescue station designated as the wind and smoke into the new channel, cross ventilation openings must maintain positive pressure state, to prevent flue gas flow channel. Accident tunnel ventilation system to supply air from the direction of a secure tunnel to cross the channel by inhibiting the flue gas into a cross-channel and the accident did not occur in the tunnel exhaust fan, meet new evacuees facing into the wind tunnel cross passages and safety, while ensuring that waiting area needed fresh air in the tunnel area in accordance with the different accident Disaster different ventilation mode. "sentinel" Disaster ventilation scheme implemented when the train rescue point in the "sentinel" range for all of the cross-channel settings can be contacted Reverse fans get fresh air from within the security tunnel. Fire Axial exhaust fan, exhaust fan Linyi, Chen Yu-conditioning services provided by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chenyu air conditioning and you hand into the brilliant, for a better future!