basically i want to know for a fan whether the air flow created is more reliant on speed or torque, if there's some sort of equation out there that'd be helpful too!
Pengwuino said:If your in the same medium, isn't the flow rating a function of the speed which is a function of torque?
Thank you so much for providing that; it's exactly the sort of thing I've been trying to find to aid in my hovercraft design.quark said:The above link provides you basic and detailed knowledge on fans.
CFM (Cubic Feet per Minute) is a measure of the volume of air that a fan can move in one minute. As the speed of a fan increases, the blades are able to move more air, resulting in a higher CFM output. Therefore, fan CFM output is directly proportional to the speed of the fan.
Yes, the speed setting of a fan directly affects its CFM output. A higher speed setting will result in a higher CFM output and vice versa. This is because the speed setting controls the rate at which the fan blades rotate, which in turn determines the amount of air that is moved.
Torque is the amount of rotational force applied to the fan blades. It is a measure of how much work the motor is doing to turn the blades. The higher the torque, the more power the motor has to rotate the blades, resulting in a higher CFM output. Therefore, fan CFM output is reliant on torque as well as speed.
Yes, different types of fans, such as centrifugal fans and axial fans, have different designs and mechanisms for moving air. As a result, they may have different CFM outputs at the same speed. For example, a centrifugal fan may have a higher CFM output compared to an axial fan at the same speed due to its design.
Yes, increasing both speed and torque can increase a fan's CFM output. However, it is important to note that there are limits to how much the speed and torque can be increased before the fan reaches its maximum CFM output. Additionally, increasing both speed and torque may also result in higher energy consumption and noise levels.