Things to Consider When Designing a Fan!
A sound is a physical event. It is interesting to note that “sound happens” regardless of whether anyone is around to hear it. Thanks to the fact that sound is governed by natural laws, it can be measured, predicted, and used to our advantage just as the fan performance is governed by the Fan Laws, which are also governed by nature.
In order to be able to determine how noisy a fan is and what can be done to in order to make it quieter, it is not as simple as it might seem. It is important to keep in mind that there are external factors such as the environment in which the fan operates, in addition to factors such as the design of the fan, the speed of the fan, the pressure that the fan develops, and the volume of air passing through the fan.
Choosing a fan is a complicated process that must be started by understanding how much heat comes from the system before you begin the process of choosing it. Often the most significant heat dissipation is caused by components such as processors which are the most power consuming and are, therefore, responsible for considerable power consumption. As a result of high temperatures, components can be subject to dramatic degradation in their performance and reliability. It is often desirable to keep the actual operating temperature well below the upper limit, even though the device is normally designed to function within a specified range of temperatures. Thus, to determine the required amount of airflow to ensure that the component temperature remains within the permitted range within the given operating conditions, we need to determine the maximum temperature rise which can be acceptable by design. Secondly, airflow impedance can also be referred to as back pressure, which is the drop in air pressure between the inlet and outlet of a given airflow. A difference in air flow rate can be measured using pressure sensors, which can be situated in an air chamber or placed in an air chamber for different rates of air flow. An operating point is defined by the intersection between two curves showing the variation of airflow against static pressure and airflow impedance of the system.