Features of Pipeline fan

1. The control parameters of the Pipeline fan are air volume, total pressure, efficiency, noise, motor power, etc.

2. According to the physical and chemical properties of the gas to be transported, choose a fan for different purposes. For conveying clean air, general fans should be selected; for conveying flammable and explosive gases, explosion-proof fans should be selected; for conveying corrosive gases, corrosion-resistant fans should be selected.

3. When selecting a fan, the leakage loss of the piping system, calculation error, and the negative deviation of the actual air volume and air pressure of the fan should be considered. Generally, the safety factor of the air volume is 1.05~1.1 and the wind pressure is 1.10~1.15. However, it is not too large to prevent the fan from running in a low-efficiency area for a long time.

4. Pay attention to the matching relationship between the resistance characteristics of the pipe network and the characteristics of the fan. In order to make the ventilator run stably, the ventilator should work near its highest efficiency point, and the working point of the ventilator is located on the right side of the full pressure peak point in the performance curve (that is, on the side of large air volume, and is generally located at 80% of the full pressure peak value. ).

5. For the ventilation system with noise reduction requirements, the fan with high efficiency and low impeller peripheral speed should be selected first, and it should work near the highest efficiency point. Corresponding noise reduction and vibration reduction measures should also be taken according to the transmission mode of noise and vibration generated by the ventilation system.

6. The duct fan changes the shape of the blades, so that after the airflow enters the fan, it has both a part of the axial flow and a part of the centrifugal effect, so its performance is between the axial fan and the centrifugal fan.

7. Duct ventilators can provide medium air pressure and medium air volume, and are suitable for ventilation systems in high-rise civil buildings