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Duct Pressure Loss (Swamee-Jain + loss coefficients)

Flow Q (m³/min)Duct diameter D (mm)Duct length L (m)MaterialGas temperature (°C)90° elbows (R/D=1.5)

Velocity V

17.3m/s

Reynolds

3.91e+5

Re = ρVD/μ

Friction factor f

0.0152

Swamee-Jain

Straight-run loss

232 Pa

f·(L/D)·ρV²/2

Fitting loss (elbows)

71 Pa

K·ρV²/2

Total static loss

303 Pa