Duct Friction Loss: 32
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 32 | 600 | 3,351.03 | 0.8128 | 0.115447 | 0.016777 | 0.014141 | Darcy-Weisbach + Haaland | 164,809.7 | 0.00009 | 3.048 |
| 32 | 800 | 4,468.04 | 0.8128 | 0.19609 | 0.016029 | 0.024019 | Darcy-Weisbach + Haaland | 219,746.2 | 0.00009 | 4.064 |
| 32 | 1,000 | 5,585.05 | 0.8128 | 0.296529 | 0.015513 | 0.036321 | Darcy-Weisbach + Haaland | 274,682.8 | 0.00009 | 5.08 |
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