Duct Friction Loss: 48
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 48 | 600 | 7,539.82 | 1.2192 | 0.070902 | 0.015455 | 0.008685 | Darcy-Weisbach + Haaland | 247,214.5 | 0.00009 | 3.048 |
| 48 | 800 | 10,053.1 | 1.2192 | 0.1206 | 0.014787 | 0.014772 | Darcy-Weisbach + Haaland | 329,619.3 | 0.00009 | 4.064 |
| 48 | 1,000 | 12,566.37 | 1.2192 | 0.182543 | 0.014325 | 0.022359 | Darcy-Weisbach + Haaland | 412,024.1 | 0.00009 | 5.08 |
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