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Darcy Friction Loss Calculator For Pipes, Fittings & Valves: Given Data

This document calculates the Darcy friction loss for a pipe system with the following characteristics: - The pipe is 230m long with an inner diameter of 53.7mm - It carries a flow rate of 8m3/hr (0.00222 m3/s) of a liquid with a kinematic viscosity of 1 cSt - The calculated total head loss is 5.06m, of which 4.34m is due to pipe friction and 0.72m is due to fittings, valves and pipe entries/exits in the system.

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Joh Songtham
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105 views1 page

Darcy Friction Loss Calculator For Pipes, Fittings & Valves: Given Data

This document calculates the Darcy friction loss for a pipe system with the following characteristics: - The pipe is 230m long with an inner diameter of 53.7mm - It carries a flow rate of 8m3/hr (0.00222 m3/s) of a liquid with a kinematic viscosity of 1 cSt - The calculated total head loss is 5.06m, of which 4.34m is due to pipe friction and 0.72m is due to fittings, valves and pipe entries/exits in the system.

Uploaded by

Joh Songtham
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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DARCY FRICTION LOSS CALCULATOR FOR PIPES, FITTINGS & VALVES

Given Data
Flow Rate (Q) m3/hr 8 0.00222 m3/s INPUTS
Pipe Inside Diameter (D) mm 53.7 0.0537 m CALCULATED VALUES
Kinematic Viscosity (ν) cSt 1 1.000E-06 m2/s
Specific Roughness (Є) m 1.50E-06
Pipe Length (L) m 230

Calculated Data
Average Velocity - V (m/s) 0.98
Reynolds Number 52689
Darcy Friction Factor 0.021
Head Loss - Pipe (m) 4.34 TOTAL HEAD LOSS, hf (m) 5.06

Calculated Head Loss in Fittings, Valves, Entrances & Exits

K Qty Sub Total K


Angle Valve 5 0 0
Ball Valve, Full Port 0.05 2 0.1
Butterfly Valve 0.6 0 0
Check Valve, Swing Type 2.3 1 2.3
Elbow 45 Degrees 0.4 0 0
Elbow 90 Degrees, Long Radius 0.6 0 0
Elbow 90 Degrees, Standard 0.9 12 10.8
Flow Meter, Turbine Type 7 0 0
Foot Valve 0.9 0 0
Gate Valve 0.2 0 0
Globe Valve 10 0 0
Pipe Entrance, Inward Projected Pipe 1 0 0
Pipe Entrance, Sharp Edge 0.5 1 0.5
Pipe Exit 1 1 1
Tee, Standard, Flow Through Branch 1.8 0 0
Tee, Standard, Flow Through Run 0.6 0 0
14.7
Head Loss - Valves & Fittings (m) 0.72

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