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Duct Pressure Loss (Swamee-Jain + loss coefficients)
Flow Q
m³/min
Duct diameter D
mm
Duct length L
m
Material
Carbon steel (ε=0.046 mm)
SUS304 (ε=0.015mm)
SUS316L (ε=0.015mm)
FRP (ε=0.005mm)
Galvanized (ε=0.15 mm)
Gas temperature
°C
90° elbows (R/D=1.5)
Velocity V
17.3
m/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