24ft Industrial big HVLS ceiling fan for warehouse ventilation 
with Permanent Magnet Direct Drive Motor , Color display servo drive.

Compared to traditional deceleration fan,Permanent magnet of direct drive fan have the following advantages:  
1)More energy saving effect2)Operating noise is significantly reduced
3) Service life and reliability are significantly improved.
4)reduction gear box is eliminated ,pollution due to lubricant leakage does not occur
5)Maintenance-free for the entire life
6)A standard factory building of 10,000 square meters only needs to install 5-10 large-scale 7.3 meter fans, which is more than 70% energy-efficient than traditional distributed small fans.




The fan has an efficiency of 84% within the speed range, especially under 70% of the highest speed load the motor efficiency can be achieved 90%; 
Specification sheet24ft hvls fan Specification Remark:
Regarding the noise test: under the condition that the rotation plane of the fan blade is> 8 meters from the ground and the rotation plane of the fan blade is> 2.5 meters from the roof, the vertical distance of the vertical line of the fan is 7 meters, and the sampling is carried out at a plurality of circumferentially distributed positions at a height of 1.7 meters on the ground Obtained reference noise data (the geometry of the roof and whether there are pillars around it will affect the noise test)

About the comfort index characteristics:
1. The fan produces wind speeds between 0.6m/s-2m/s
2. The ambient temperature is between 20 and 33ºC
3. The relative humidity of the environment is between 50% and 85%

XingTai Large Industrial Ceiling Fan Fixing and Accessories: