How to choose a computer cooling fan?

In the choice of the cooling fan, we often compare the wind pressure and the air volume. The wind pressure and the air volume are for normal ventilation. The resistance in the ventilation stroke of the cooling fan needs to be overcome, and the cooling fan must generate pressure to overcome the air supply resistance. This is the wind pressure. . Wind pressure is an important indicator to measure the performance of a cooling fan. The wind pressure mainly depends on the shape, area, height and speed of the fan blade. The faster the speed, the larger the fan blade. The higher the wind pressure is, the air duct design heat sink can better maintain the wind pressure of the fan. Air volume is air-cooled
 

      The total volume of air sent or sucked by the cooling fan every minute. In the case of the same material of the heat sink, the air volume is a more important indicator to measure the heat dissipation capacity of the air-cooled radiator. The larger the fan, the greater the air volume, the greater the air volume. More heat can be taken away per unit of time. If the air volume is compared to the swing force of a weapon, then the wind pressure is the sharpness of the weapon. With other conditions unchanged, the actual air volume plays a decisive role in the effect of the cooling fan. The cooling fan with aluminum fins has higher requirements for wind pressure. Copper fins require large air volume. The denser the fins, the higher the wind pressure requirements. Otherwise, the air flow between the fins will not be smooth.
 

       In terms of design, the design of the cooling fan is in addition to the general design mentioned above. There are also some cooling fans that use some very special designs. Through the application of newer technologies and processes, they can better meet the needs of users. The cooling fan is dust-proof, and all parts of the air flow through long-term use will be covered with a thick layer of dust. This will lead to poor air flow. Increase the weight of the blades. Reduce the speed or increase the motor load. It may even cause damage to the fan. For this reason, some cooling fan manufacturers also have their own tricks in dust prevention. For example, some manufacturers in the market install the "dust-proof net" on the outside of the fan. But it must be cleaned regularly, otherwise the dust-proof net will cause unnecessary heat dissipation troubles. There are also some products that have introduced a so-called brand-new dust-proof design, which changes the dust deposit near the shaft to a closed shape, while optimizing the wind direction of the wind, so that dust has nowhere to hide. The life span of the fan can be greatly increased, and it is more assured to use.
 

       In short, the cooling fan is inconspicuous in all computer accessories. But it is essential. A high-performance cooling fan can well meet the needs of computer hardware cooling. It becomes the protector of stable computer operation. For a cooling fan to have strong performance, it needs the fan as a whole to deal with all the details just right. In order to play a better performance. A cooling fan with a large air volume. Wind pressure will be sacrificed. The wind pressure is high. The air volume will decrease. The speed of the cooling fan is not necessarily related to the cooling capacity.