A cooling fan four important indexes

1.Blowing rate:

Volume is a cooling fan exhaust air volume per second, is to measure the cooling fan cooling capacity of one of the most important indicator. Air flow, the greater the cooling fan of the cooling capacity is, the better.

2.Wind pressure:

A cooling fan wind pressure and air volume are completely different concepts. Is relative. Wind pressure refers to the cooling fan for normal ventilation, to overcome the fan ventilation resistance in the trip. A cooling fan air volume is big, wind pressure will be low. High wind pressure air volume is small. Air flow can bring a lot of air flow, but small wind, the wind is less than the bottom of the radiator, cooling effect is not good, wind pressure the air volume is small, there is not enough air and heat sink for heat exchange, the cooling effect is not good.


Cooling fan speed is refers to the number of the fan blade rotation per minute, the unit is the RPM. It is easy to understand.


Cooling fan working noise is an important indicator. General requirements of fan noise to small, and can’t exist different sounds.