What type of pressure does a centrifugal fan primarily convert velocity pressure into?

A centrifugal fan primarily converts velocity pressure into static pressure. In the operation of a centrifugal fan, air is drawn in through the impeller at the center and is then accelerated outward as it moves through the fan's housing. This process increases the air's velocity, which initially contributes to velocity pressure.

However, as the air is expelled from the fan, this velocity pressure is transformed into static pressure, which is the pressure exerted by the air when it is not in motion or when it is stationary. Static pressure is an essential component for moving the air through ducts or systems after it exits the fan. Therefore, the function of the centrifugal fan is to increase static pressure, allowing the system to distribute air effectively in HVAC applications, industrial ventilation, or other processes requiring airflow management.