Static Pressure Fans Vs Airflow Fans

The 3 points depict possible scenarios where the fan will perform.

Static pressure fans vs airflow fans.

The two opposite ends of the blade design spectrum are the af airflow and sp static pressure designed fans. High static pressure fans are for situations where there s quite a lot of restriction in front. Af style fans have many thin blades 9 15 typically with a relatively steep angle. With static pressure fans vs airflow fans the fan blade structure is the main difference between these types of fans.

Linus explains the difference between high airflow and static p. Airflow fans feature small blades more curved blades and decent gap between the body and the fan which holds them together. Remember airflow fans are for the majority of uses where there s very little restricting the airflow. And when static pressure increases air flow decreases.

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. There s more to choosing the right pc fan than picking a size noise level and bearing type. 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. This is a highly efficient design to move airflow volume with the least amount of fan blade noise.

The relationship between air flow and static pressure of a fan is shown in the graph above. 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. When air flow increases static pressure decreases.