How To Determine The Performance Of A Cooling Fan

When choosing a cooling fan, people who are familiar with it generally know that they can choose from its main parameters such as bearings, specifications, and number of fan blades. So, how can we judge its performance? Today, let's follow the editor to learn more!
Oil bearings and ball bearings are widely used in them. Generally, the price of using oil bearings is lower and the rotating noise is lower. Some manufacturers add polytetrafluoroethylene to oil bearings to make them have the characteristics of ball bearings. However, fans using ball bearings have higher noise and price than oil bearings, but their advantages are high reliability and long service life.
Generally speaking, the length of the fan blades and the large total heat dissipation area of a relatively large heat dissipation fan are manifestations of its performance, so its total air flow rate is very large. If the design scheme is not good, the heat dissipation capacity of a large fan will be inferior to that of a small fan.
The blades also have a significant impact on its performance. If other components of the same fan remain unchanged and only replace the blades from 5 to 7, the change in exhaust volume will not be easily improved. However, from the perspective of fan speed, the speed of 7 blades is lower than that of 5 blades. Relatively speaking, if 7 blades are selected, there will be less oil leakage and longer service life.