Duct Friction Loss: 24
Duct friction loss data — pressure drop, velocity, and friction factors for round ducts at various diameters and airflows
| diameter in | velocity fpm | airflow cfm (cfm) | diameter m (m) | dp pa per m (Pa/m) | friction factor (dimensionless) | friction rate inwg per 100ft (inWG/100ft) | model | reynolds number (dimensionless) | roughness m (m) | velocity m s (m/s) |
|---|---|---|---|---|---|---|---|---|---|---|
| 24 | 600 | 1,884.96 | 0.6096 | 0.163507 | 0.01782 | 0.020028 | Darcy-Weisbach + Haaland | 123,607.2 | 0.00009 | 3.048 |
| 24 | 800 | 2,513.27 | 0.6096 | 0.277423 | 0.017008 | 0.033981 | Darcy-Weisbach + Haaland | 164,809.7 | 0.00009 | 4.064 |
| 24 | 1,000 | 3,141.59 | 0.6096 | 0.419226 | 0.016449 | 0.05135 | Darcy-Weisbach + Haaland | 206,012.1 | 0.00009 | 5.08 |
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