Airflow & Static Pressure
Airflow can be defined as the volume of air that a blower or fan moves in a certain amount of time, such as cubic feet per minute — also known as CFM. CFM is used to determine what air filtration system is best for an application. The higher the CFM, the more power a fan has to draw in and move more air.
Air filtration systems are made equipped with a range of fans to accommodate various CFM requirements. Air flow and air filtration work hand-in-hand to create a circular pattern that keeps the airstream clean, filtered, and moving.
Static pressure is the resistance to airflow and signifies the amount of pressure a fan has to pull and push. When static pressure increases, airflow decreases, and when airflow increases, static pressure decreases. Higher static pressure means that the fan can even ventilate inside equipment with high mounting density.
Maximum airflow is the amount of airflow without any obstructions at the inlet and outlet sides of an air filtration system and maximum static pressure is when the outlet is fully obstructed. Impedance is how airflow and static pressure requirements are determined and represents anything that obstructs the airflow path. Impedance is calculated by the "square law," which means that static pressure changes as a square function of changes in the CFM.
Air filtration systems have a specific catch and throw distance to determine how far apart units should be installed to move air from one point to another — the pressure difference between each distance makes the airstream flow from the higher pressure to the lower pressure area.
The lowest pressure in an air filtration system is at the fan inlet and the highest pressure is at the outlet.
If airflow decreases, causing the static pressure to increase, the fan has to work harder to push air from one air filtration system to the next and there will be an increase in operating costs and energy costs.
That is why it's important for air filtration system fans to be properly placed to ensure high efficiency and effectiveness.
Blue Ox air filtration systems are configured to achieve the required efficiency, airflow, and capacity. Efficiency is crucial to the capture ability of a unit and guarantees that particulates, large and small are effectively captured and that the airstream is properly filtered for safe redistribution.
When it comes to airflow, air filtration systems are designed to exchange the air in a room so many times per hour to reduce a high percentage of particulates — Blue Ox units clean the airstream by reducing 95% of air contaminants by exchanging the air in a room or space eight times per hour.
Pressure differential is the variance between the pressure immediately upstream or downstream of a filter. The filter and air filtration system capacity must be able to handle the volume of air to keep up with the efficiency and pressure drop.
Blue Ox air filtration systems are available in two configurations to meet a large scale of application demands.
We offer a pass-thru style that features a grill and fan on one side with filters on the other side.
Pass-thru air filtration systems pull contaminated air through the end where the filters are located and exhaust air through the end where the grill is located to create a straight flow motion.
We also offer a T-style air filtration system with a grill and fan located in the center that works by drawing contaminated air through filters on each side of the system and exhausts air from the center.
T-style units provide double the media in a unit when compared to pass-thru styles.
Blue Ox air filtration systems are designed by industry experts and are equipped with American-made parts to guarantee maximum filter life, compressed air, and energy savings.
Learn more about our systems or get started on your free quote by contacting our specialists today!
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