How To Choose A DC Fan? What Is The Reason For The Slow Speed Of The Computer Fan?

The working principle of Computer fan is based on energy conversion, namely: electric energy → electromagnetic energy → mechanical energy → kinetic energy. The circuit principle is generally divided into various forms, and the performance of the fan will vary depending on the circuit used.
The speed of the Computer fan depends on the voltage, the angle and diameter of the fan blades, the number of fan blades and the bearings. So, what is the reason for the slow speed of the Computer fan?
The main decisive conditions for the speed of Computer fan are the structure and parts of the fan, the friction force of the bearing and the wind resistance of the blade angle. If the air pressure of the cooling fan is insufficient, it will also affect the speed of the fan.
1. The external environment (such as sand, high temperature and low temperature) will also affect the speed of the Computer fan.
2. Check whether the Computer fan is not cleaned for a long time, because the accumulation of dust and impurities will make the fan run. Lowering the speed requires more effort.
3. Check whether the Computer fan is installed correctly. If the installation is not correct and the fan is loose, the fan speed will also decrease.
There are six key points to selecting a DC fan:
First Choose a goal that can achieve high air volume. We need to see if the high air volume value is what we expect.
Secondly, choose goals that can achieve small sizes. Select small size Computer fan according to the environmental requirements of our site.
Thirdly Choose a goal that can achieve low noise. The height of noise is always a criterion for the quality of a fan. So this aspect needs to be carefully chosen.
Fourth Choose a goal that can achieve low power consumption. Energy saving is a big goal for us to choose Computer fan.
Fifth Choose a target with a long lifespan. Being able to work for a long time is a necessary choice for us.
Sixth Choose targets with low costs. This is a very practical problem