How to pick an electric fan?
Consider the number of fans, the same fan, if the other parts remain unchanged, only the leaves from five fan leaves to seven fans, the air volume changes may not increase much
The fan leaves of a bamboo, streamlined appearance.
A good electric fan is all powerful in the motor, and the fan can be ignored when it is running.
The advantage of the large fan is that the fan blade is long and the radiating area is large, so the gas flow rate is larger. But if not properly designed, the cooling capacity of a large fan may not be as good as that of a small fan
