The commercial exhaust fans vary in sizes and dimensions. It is important for the design engineer to establish the space available and the amount of cooling required. This is where the thermal analysis becomes vital. A good example is the computer systems; they require small exhaust fans which should be able to run at high speeds. On the other hand; the larger fans can be used in locomotives. Select the right size of a fan as per the application.
The power supplied will determine very many factors. The size and speed of the commercial exhaust fan being obvious factors. These can be determined on the fan’s performance curve. The end users have two main options, either to go for high or low voltage fans.
The DC commercial exhaust fans are popular since they’re energy efficient. Normally, their construction is directly proportional to the voltage. The modern fans feature circuits, which eliminate voltage spikes in their operation. This provides a smooth cooling process.
This is a disgusting phenomenon. Under normal circumstances, it is the rotation speed and the size, which contribute to this noise. That is, if a fun spins faster, the level of noise will increase. Of course, the types of the commercial fan will also determine the level of noise. For instance, the axial fans are noisier than the centrifugal fans.
Noise is inevitable when using fans, however, reducing the level of noise is a crucial factor to avoid air pollution.