Duct Friction Loss: 22
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 22 | 600 | 1,583.89 | 0.5588 | 0.181725 | 0.018156 | 0.022259 | Darcy-Weisbach + Haaland | 113,306.6 | 0.00009 | 3.048 |
| 22 | 800 | 2,111.85 | 0.5588 | 0.30823 | 0.017322 | 0.037755 | Darcy-Weisbach + Haaland | 151,075.5 | 0.00009 | 4.064 |
| 22 | 1,000 | 2,639.81 | 0.5588 | 0.465677 | 0.016749 | 0.05704 | Darcy-Weisbach + Haaland | 188,844.4 | 0.00009 | 5.08 |
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