A cooling fan operates by using a motor to drive the rotation of blades, generating airflow that accelerates the movement of air and removes heat from heat sinks or radiators. The speed of the fan and the design of the blades directly affect its cooling efficiency. Generally, the higher the fan speed, the greater the airflow, and the better the cooling performance. However, higher speeds also result in increased noise and power consumption. Therefore, it is essential to balance cooling performance, noise, and energy consumption during design.