Industrial fan parameters and selection calculation methods
Overview
In the industrial production process, fans, as an important mechanical equipment, are widely used in various occasions, such as factories, mines, construction, etc. It achieves functions such as gas transmission, cooling, and ventilation by generating air flow. In order to ensure the normal operation of industrial fans and meet production needs, it is very necessary to understand and master the parameters and selection calculation methods of industrial fans.
Main parameters of industrial fans
1. Air volume (Q): The volume of air passing through the fan per unit time, usually expressed in cubic meters per hour (m³/h) or cubic feet per minute (ft³/min).
2. Wind pressure (H): The pressure exerted by the fan on the air, usually expressed in Pascal (Pa) or inches of water column (inH2O).
3. Speed (N): The speed of the fan rotor, usually expressed in revolutions per minute (r/min).
4. Power (P): The electrical power required by the fan, usually expressed in kilowatts (kW) or horsepower (hp).
5. Noise: The noise level when the fan is running, usually expressed in decibels (dB).
Calculation method for selecting industrial fans
1. Determine the required air volume and air pressure according to process requirements. For example, if you need to pump air from one room to another, you need to determine the air volume and pressure based on the volume and pressure difference between the two rooms.
2. Select the appropriate fan model based on air volume and wind pressure. Usually, the air volume and pressure parameters of the fan are given in the product manual.
3. Consider the impact of pipeline resistance on fan performance. Pipe resistance will affect the air volume and pressure of the fan, so this needs to be taken into consideration when selecting a fan.
4. Select the appropriate fan type according to the actual application scenario. For example, if you need to reduce the dust content in the air, you can choose a fan with a filter; if you need to pump the air from one floor to another, you can choose a centrifugal fan, etc.
5. Select the appropriate fan model based on environmental and economic factors. For example, if you need to run a fan in a noisy environment, you can choose a low-noise fan model; if you need to run it for a long time and have high energy-saving requirements, you can choose a high-efficiency fan model, etc.
