Duct Friction Loss: 26
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) |
|---|---|---|---|---|---|---|---|---|---|---|
| 26 | 600 | 2,212.2 | 0.6604 | 0.148388 | 0.01752 | 0.018176 | Darcy-Weisbach + Haaland | 133,907.8 | 0.00009 | 3.048 |
| 26 | 800 | 2,949.61 | 0.6604 | 0.251848 | 0.016726 | 0.030848 | Darcy-Weisbach + Haaland | 178,543.8 | 0.00009 | 4.064 |
| 26 | 1,000 | 3,687.01 | 0.6604 | 0.380654 | 0.01618 | 0.046626 | Darcy-Weisbach + Haaland | 223,179.7 | 0.00009 | 5.08 |
This is a sample. Search the full duct friction loss dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE