Fluid flow Cement Industry
Pressure Loss in pipe/ Darcy-Weisbach Formula
When the fluid is flowing through pipes the major energy loss (i.e. head loss due to friction) in pipes is calculated by using Darcy – Weisbach Formula.
Flow Measurement Using Pitot Tube
Pitot tubes are used to measure air flow in pipes, ducts, and stacks, and liquid flow in pipes, weirs, and open channels.
Conditions for measuring point:
-Straight stretch of min 5D before & 2D after the pt. is necessary (D=inside diameter of the duct)
-As straight stretch as possible
– No bends, flanges or dampers
For circular ducts :
The equivalent diameter is used to find out the number of measuring points. Then divide the section into number of equal areas for the measurements.