Duct Friction Loss: 16
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 16 | 600 | 837.76 | 0.4064 | 0.267915 | 0.019467 | 0.032816 | Darcy-Weisbach + Haaland | 82,404.8 | 0.00009 | 3.048 |
| 16 | 800 | 1,117.01 | 0.4064 | 0.453838 | 0.018549 | 0.05559 | Darcy-Weisbach + Haaland | 109,873.1 | 0.00009 | 4.064 |
| 16 | 1,000 | 1,396.26 | 0.4064 | 0.685084 | 0.01792 | 0.083915 | Darcy-Weisbach + Haaland | 137,341.4 | 0.00009 | 5.08 |
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