Duct Friction Loss: 30
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 30 | 600 | 2,945.24 | 0.762 | 0.124802 | 0.017003 | 0.015287 | Darcy-Weisbach + Haaland | 154,509 | 0.00009 | 3.048 |
| 30 | 800 | 3,926.99 | 0.762 | 0.21193 | 0.016241 | 0.025959 | Darcy-Weisbach + Haaland | 206,012.1 | 0.00009 | 4.064 |
| 30 | 1,000 | 4,908.74 | 0.762 | 0.320434 | 0.015716 | 0.039249 | Darcy-Weisbach + Haaland | 257,515.1 | 0.00009 | 5.08 |
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