The volume of air (CFM or L/s) passing through the fitting.
Proper sizing prevents noisy systems and ensures adequate air delivery to rooms.
By calculating both straight duct friction loss and fitting loss, they provide the total static pressure needed for proper duct design. Key Data Used in Calculations
The speed of the air (FPM or m/s), which directly affects friction.
Helps ensure that the total pressure does not exceed the capacity of the air handling unit (AHU).
By accurately sizing fans, you prevent over-pressurizing the system, which wastes energy.
A duct fitting loss calculator is an essential HVAC tool used to determine the pressure drop (resistance) caused by fittings like elbows, tees, transitions, and takeoffs within a duct system. These tools help calculate the total static pressure a fan must overcome to deliver the necessary air volume. Key Functions of a Duct Fitting Calculator