Fan noise can be affected by many factors, the following are some common ones:

1.The higher the speed of the fan, the more noise it usually produces

2.The design and shape of fan blades will affect the smoothness of air flow, and different designs may produce different noise levels.

3.The installation method of the fan will affect the transmission and diffusion of noise. For example, if a fan is mounted directly on a vibrating surface, the vibrations will generate noise through conduction.

4.The quality and manufacturing process of the fan will have an impact on the noise. High-quality fans usually use better sound insulation materials and vibration reduction measures to reduce noise.

5.When the fan is working, the air flow will produce a certain resistance, which will cause noise.

6.The operating environment of the fan will also have an impact on the noise. For example, if a fan is installed in an enclosed space, noise may be reflected and amplified.

7.The maintenance and upkeep of the fan will also affect the noise level. For example, if a fan has worn or unbalanced blades, it will increase noise production.

To sum up, there are many factors that affect fan noise, including speed, blade design, installation method, and so on. When we choose and use fans, we need to consider these factors comprehensively to reduce the noise level. In addition, when multiple same or different fans are used in the same scene, the noise will also be superimposed. If you want to know the specific calculation method, please contact us.