Airflow is measured in cubic meters per hour and describes the expected amount of air that will flow through the fan in one hour’s time. In complex systems, there may be many fans working together to get a desired airflow. Axial fans can also be installed in different locations and set up so that airflow is directed smoothly through a space, or so that the space has positive or negative pressure due to the working of the fans.
What Is the Fan Speed?
Fan speed is measured in rpms and describes the speed at which the propeller rotates. This is variable on many models fans and, in fact, the axial fans used in computers are designed to be variable speed to cut down on a nuisance factor of high rpms: noise.
Fan speeds tend to be directly related to fan size. Larger fans move more air and, because of that, they can oftentimes be run at lower rpms than smaller fans to move the same quantity of air. For applications where a user is going to be next to a machine that requires fan cooling, putting larger fans in the device sometimes allows for proper cooling with less noise than smaller fans would generate.
What Is Considered AC or DC Operation of an Axial Fan?
This simply indicates whether the fan runs on AC or DC power.
What Does the Direction of Curve Define?
The direction of the blades in relation to the rotation of the fan is described as the curve. In a forward curved fan, for instance, the blades are oriented in the same direction as the rotation of the fan. In some cases, very engineered systems may require a specific curve direction for the fan. This may not be much of a factor in less demanding applications, however.
What Is the Power Consumption of an Axial Fan?
The power consumption of an axial fan is one of its most desirable features. This describes the amount of power required to run the device in watts. Axial fans are enormously efficient to operate.
How Is the Noise level of an Axial Fan Defined?
All fans make some noise. This is measured in decibels (dB) and expresses the amount of noise the fan generates during normal operation. This is a concern where both large and small fans are being installed. Small fans rotating at high rpms can generate a great deal of noise, for instance, a problem for powerful computers that require a great degree of thermal management. Larger fans can also generate a great deal of noise, in some cases. Poorly engineered fans may have problems with vibration, which can increase the amount of noise they generate.
Which Sensor Output Types Exist for Axial Fans?
Sensor outputs on fans are important in applications where flow has to be precisely controlled, such as in computer cases. Fans are outfitted with many different types of sensors, including tachometers, voltage outputs, temperature outputs, open collectors, which provide rpm data.
Some fans can be very precisely controlled via software. Computer fans can usually have their speeds set manually by the user, which some programmers and other demanding users take advantage of to make sure their computer is being cooled as much as possible at all times.
Which Blade Diameters Are Available for Axial Fans?
Blade diameters range from a few millimetres and up. It is simply the diameter of the propeller element of the fan
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