Duct Friction Loss: 44
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 44 | 600 | 6,335.55 | 1.1176 | 0.078699 | 0.015725 | 0.00964 | Darcy-Weisbach + Haaland | 226,613.3 | 0.00009 | 3.048 |
| 44 | 800 | 8,447.39 | 1.1176 | 0.133823 | 0.015041 | 0.016392 | Darcy-Weisbach + Haaland | 302,151 | 0.00009 | 4.064 |
| 44 | 1,000 | 10,559.24 | 1.1176 | 0.202518 | 0.014568 | 0.024806 | Darcy-Weisbach + Haaland | 377,688.8 | 0.00009 | 5.08 |
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