"24V DC Cooling Fan" wind speed is an important performance index fan, with the two most important performance indicator of the amount of wind close. That wind speed fan outlet or inlet air flow rate, the unit generally m / s; only the speed value of a location, not fully reflect the performance of the fan. "24V DC Cooling Fan" Winds may have quite different values in different locations, and the average value is difficult to calculate, generally do not have to represent the performance of the fan, only in the detailed design and analysis will be used. "24V DC Cooling Fan" wind blades depends mainly on the shape, size, height and speed. Fan shape design, area, height of impact is more complicated, will be explained later; faster fan speed, the faster the wind speed, it is obvious common sense, needless to say.