Duct Friction Loss: 10
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 600 | 327.25 | 0.254 | 0.47738 | 0.021679 | 0.058473 | Darcy-Weisbach + Haaland | 51,503 | 0.00009 | 3.048 |
| 10 | 800 | 436.33 | 0.254 | 0.807003 | 0.020614 | 0.098848 | Darcy-Weisbach + Haaland | 68,670.7 | 0.00009 | 4.064 |
| 10 | 1,000 | 545.42 | 0.254 | 1.216559 | 0.019889 | 0.149014 | Darcy-Weisbach + Haaland | 85,838.4 | 0.00009 | 5.08 |
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