Pressure Loss Calculator

Calculation: Pressure Loss by Fittings

Auxiliary table: Drag coefficient (Zeta) of a pipe bend according to bend radius (r) and pipe diameter (d)

r/d124610
Zeta0,50,30,230,180,2
Quantity
Total =

Auxiliary table: Drag coefficient (Zeta) of a pipe bend with pipe diameter large (dgroß) and pipe diameter small (dklein)
dgroß/dklein0,10,30,50,60,80,9
Zeta0,450,420,380,30,170,09
Quantity
Total =

Auxiliary table: Drag coefficient (Zeta) of an elbow fitting according to elbow angle (alpha)
alpha10°15°30°45°60°90°
Zeta0,040,060,150,30,61,2
Quantity
Total =

Auxiliary table: Drag coefficient (Zeta) of various fittings
FittingZetaQuantityTotal
Inlet/outlet connection at tank, Type 10,06
Inlet/outlet connection at tank, Type 2 0,56
Inlet/outlet connection at tank, Type 3 2,8
ball valve0,6
Y-valve0,6
DIN shutoff valve3,9
corner valve3,0
Solenoid valve6,0
Non-return valve6,0
Clack or needle flow detector5,8
Float element flow meter6,5
Zeta drag coefficient Zeta [] (total for all individual fittings)
Q Flow rate / Dosing rate [l/h]
w flow velocity [m/s]
d pipe diameter [mm]
Density Chemical density [kg/dm3] (Water = 1.0)
decimal places
pA Pressure loss by fittings [bar] [calculated by w]
pA Pressure loss by fittings [bar] [calculated according to Q and d]



Rough Calculation for Clean Pipes

Rough calculation for clean pipes

n (dynamic) viscosity [mPa*s] (e.g. salt solution = 23.6)
w flow velocity [m/s]
d pipe diameter [mm]
L pipe line lengthg [m]
Density Chemical density/td> [kg/dm3] (Water = 1.0)
decimal places
Re Reynold number [r] [<2320 Strömung laminar, >2320 turbulent]
pR pressure loss in pipe line [bar]



Total Pressure Loss

Total pressure loss=pressure loss by fittings + pressure loss in pipe line
pG=pA + pR

Any evaluations and results are based on rough calculations and have to be checked by your own. No guarantee.

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