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Calculators.
General
Unit Conversion
Periodic Table
Piping
Darcy Weisbach
Heating piping
Water Hammer
Electrical
Voltage Drop
kVAR calculator
Motor protection
Motor sizing
Piping friction loss Calculator.This Little program will calculate for you the friction loss through a pipe using the popular Darcy-Weisbach equation :
hf = f * ( L / D) * (V2 / 2 * g).In order to calculate the minor losses (fittings) you must add the corresponding Km values from the table below , and enter them in the Km textbox of applet.
The value of friction factor f is calculated using the colebrook equation , and can be checked using the Moody diagram.
Fitting Km Globe valve, fully open 10.00 Angle valve, fully open 2.00 Gate valve, fully open 0.15 Gate valve, 1/2 closed 2.10 Swing check valve , flow 2.00 Elbow 90o - flanged 0.30 Elbow 90o - threaded 1.50 Long radius 90°, flanged 0.20 Long radius 90°, threaded 0.70 Elbow 45°, threaded 0.40 Tee , Line flow, flanged 0.20 Tee , Line flow, threaded 0.90 Tee , Branch flow, flanged 1.00 Tee , Branch flow, threaded 2.00 Piping Entry & Exit 1.00 If you experience problems using the calculator or need additional information, post your questions on the message board.
Before using the calculators
please read the Copyright and Disclaimer Notice.
Optimized for 1024x768 Screen view. Last Update 20/01/2002 .