The design factor is determined for the type of pipe or tube used:
h = 10.67 q 1.85 / (c 1.85 d h 4.8655 ) (2)
h = head loss per unit pipe (m h2o /m pipe)
c = design coefficient determined for the type of pipe or tube - the higher the factor, the smoother the pipe or tube
q = flow rate (m 3 /s)
d h = inside hydraulic diameter (m)
Pressure drop in Pa can be calculated from the head loss by multiplying the head loss with the specific weight of water:
p = h γ
p = pressure loss (N/m 2 , Pa)
γ = specific weight (N/m 3 )
Specific weight of water at 4 o C is 9810 N/m 3 .
Pipe lines - fluid flow and pressure loss - water, sewer, steel pipes, pvc pipes, copper tubes and more.
Water flow and pressure loss (psi/ft) due to friction in copper tubes ASTM B88 Types K, L and M.
The Darcy-Weisbach equation can be used to calculate the major pressure and head loss due to friction in ducts, pipes or tubes.
Calculate hydraulic diameter for pipes and ducts.
Hazen-Williams friction loss coefficients for commonly used piping materials.
Friction head loss (ftH2O per 100 ft pipe) in water pipes can be estimated with the empirical Hazen-Williams equation.
Kinematic viscosities of some common liquids like motor oil, diesel fuel, peanut oil and many more.
Water flow pressure loss diagram.
Water flow friction loss in pressfit piping.
Convert between pressure units like Pa, bar, atmosphere, pound square feet, psi and more.
Vicosity is a fluid's resistance to flow and can be valued as dynamic (absolute) or kinematic.
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