Static Pressure Fans Vs Airflow Fans

And when static pressure increases air flow decreases.

Static pressure fans vs airflow fans.

Resistance is greater than the available static pressure of the fan the airflow cfm delivered by the fan decreases until the system pressures match. 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 3 points depict possible scenarios where the fan will perform.

There s more to choosing the right pc fan than picking a size noise level and bearing type. The relationship between air flow and static pressure of a fan is shown in the graph above. The two opposite ends of the blade design spectrum are the af airflow and sp static pressure designed fans. As you can see air flow and static pressure have a negative correlation.

With static pressure fans vs airflow fans the fan blade structure is the main difference between these types of fans. Remember airflow fans are for the majority of uses where there s very little restricting the airflow. 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. Linus explains the difference between high airflow and static p.

Af style fans have many thin blades 9 15 typically with a relatively steep angle. 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.