Don't listen to their nonsense. Most workers say that. When selecting a fan for a local fan, you need to calculate the friction drag based on the length of the fan, and then find the suction volume on the characteristic curve. of the local fan according to the friction drag curve, then calculate the resistance according to the air volume and wind resistance, and then see if it can meet the needs of the working area. This air volume must take into account the air leakage rate per. 100 meters. If the air duct is not selected correctly, the resistance will be too great and the air duct will be stretched or the fan will suck. The air volume is too small and does not meet the requirements of the work surface, or the fan surges and damages the fan; don't let others know how to mislead you!
The air supply distance of a co300mm diameter air duct using 5.5KW axial flow fan depends on many factors including the fan design, length and shape of the air duct, environmental conditions etc. . Generally speaking, a 5.5KW axial flow fan can provide a long air supply distance, generally between tens of meters and hundreds of meters.
The specific air supply distance can be estimated by the following formula:
$$ L = \frac{Q}{A \cdot V} $$
Among them:
- \( L \) is the air supply distance
- \( Q \) is the air volume (unit: cubic meter/second)
- \( A \) is the cross section of the air duct (unit: square meter)
- \( V \) is the speed of the wind (unit: meters/second)
Assume that the volume of air is 3,900 cubic meters/hour (approximately 1.08 cubic meters/second), that the cross section of the air duct Eastof 0.0707 square meters (diameter 300 mm) and the wind speed is 10 meters/second, the air supply distance is approximately:
$ $ L = \frac{1.08 }{0.0707 \cdot 10} \approx 15.3 \text{meters} $$
Please note that this is only an estimate and the actual air supply distance may vary depending on specific circumstances. There is a difference. It is recommended to refer to the technical parameters and instructions provided by the fan manufacturer.