Static Pressure Fans Vs Airflow Fans

And when static pressure increases air flow decreases.

Static pressure fans vs airflow fans. Airflow fans feature small blades more curved blades and decent gap between the body and the fan which holds them together. 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. The 3 points depict possible scenarios where the fan will perform. As you can see air flow and static pressure have a negative correlation.

The relationship between air flow and static pressure of a fan is shown in the graph above. This is a highly efficient design to move airflow volume with the least amount of fan blade noise. Remember airflow fans are for the majority of uses where there s very little restricting the airflow. 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. Resistance is greater than the available static pressure of the fan the airflow cfm delivered by the fan decreases until the system pressures match. 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. 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.