Static Pressure Fans Vs Airflow Fans

And when static pressure increases air flow decreases.

Static pressure fans vs airflow fans.

There s more to choosing the right pc fan than picking a size noise level and bearing type. Linus explains the difference between high airflow and static p. A matching of the system occurs when the airflow delivered by the fan at a given static pressure equals the static pressure resistance of the. When air flow increases static pressure decreases.

Af style fans have many thin blades 9 15 typically with a relatively steep angle. High static pressure fans are for situations where there s quite a lot of restriction in front. Static pressure fans come with wider blades but the gaps between the main difference has a direct connection with how the fans are optimized because the cooling system works differently. This is a highly efficient design to move airflow volume with the least amount of fan blade noise.

The two opposite ends of the blade design spectrum are the af airflow and sp static pressure designed fans. Static pressure means when you take the same figure as airflow fan but also including the amount of resistance the fan is able to push through. Remember airflow fans are for the majority of uses where there s very little restricting the airflow. Airflow fans feature small blades more curved blades and decent gap between the body and the fan which holds them together.

The relationship between air flow and static pressure of a fan is shown in the graph above. The 3 points depict possible scenarios where the fan will perform. High airflow fans simply push as much air as possible while static pressure fans are specifically designed to tackle installations with heightened impedance and resistance.