This duct system pressure drop calculator is a tool to assist in estimating the pressure drop in an HVAC ducts.

Density of Air (kg/m3)

:1

Air Stream Velocity (m/s)

:1

Loss Coefficient

:0.5

Velocity Pressure

:0.5Pa

Pressure Loss

:0.25Pa

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Duct system pressure drop is calculated using the velocity pressure of the duct and the loss coefficient for the particular duct components. The ducts velocity pressure is calculated using the density of air flowing through the duct and the velocity of this air stream.

Where:

To calculate the velocity pressure we use the following equation:

Where:

For some more HVAC calculations, why not take a look at some of our other HVAC calculators?

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