Cooling Solutions from NMB - AC Axial Fans

AC Axial Fans

Computers, electronic components and machines today have increased in power consumption resulting in an increase in the amount of heat produced by the components in computers. In order to function effectively and to avoid overheating, malfunction, instability and breakdown leading to a shorter lifespan, these components need to be kept within some specific temperature range.

AC axial fans are common types of fans used in electronic components. The axial-flow fan uses a propeller to create a large airflow in the direction of the axis, moving air in a parallel direction of the blade axis. In other words, the fan blows air across the axis of the blade, hence the name axial fans. The fan moves heated air away from the components and draw cooler air over them, thereby giving a superior life expectancy to the components.

These fans create an optimal cooling system where space is limited, and provides ventilation, spot cooling and overall cooling of internal machinery components. This can be used in computers, copier machines, and other office equipment, and can also be used in other equipments which have low static pressure such as AV equipment, TV cameras, etc.

The noise level of this fan is very low, making it ideal to use it where silent operation levels are a requirement.

AC blowers are used largely where applications that require cooling a hot spot. These blowers are centrifugal in design, and the air moves perpendicular to the axis of rotation of the fan. While an AC fan is used in low static pressure applications, blowers are used for high pressure applications such as ATM terminals, telecommunications, high end servers, etc., and at their peak static pressure, these blowers operate at maximum efficiency.

AC v/s DC

The capacity of power a system can hold, or the amount of power flexibility it allows dictates the type of fan which can be used. The difference in the cost between AC fan and DC fan is negligible, therefore choosing the right fan according to its functionality and performance. While AC fans provide a constant flow, DC fans provides a variable, uneven flow. DC fans consume lesser power, lower levels of Electro Magnetic Interference and Radio Frequency Interference. DC fans and blowers provide a silent operation and can be used in applications such as medical instruments, telecom switches, car entertainment systems, etc.

When choosing fan for your applications, it is important to look at the cooling requirements of the system and applications, the fan type, the air flow, and AC or DC power operation.

Other related articles

AC Cooling Fans
AC Cooling Fan Guide
Axial Cooling Fans
Electrical Differences in AC and DC Cooling Fans