Pressure drop is very important for sizing pumps, making systems more energy efficient, and making sure they work.
Where: ΔP = Pressure drops (Pa), f = the factor of friction (no units), L = Length of the pipe (m), D = Internal diameter (m), ρ = The density of the fluid (kg/m³), V = Flow speed (m/s)
Example:
The flow rate is 150 m³/hr. Medium = Water (ρ ≈ 1000 kg/m³), μ ≈ 0.0007 Pa·s, which is based on the steam table’s pressure and temperature, Temperature = 32oC, Diameter (internal) of the pipe =200 mm, Length is (L) 500 m.
The flow is Fully turbulent flow.
We calculate the Friction Factor by using Blasius Equation for turbulent flow.
Finally, we can calculate the Pressure Drop by using Darcy–Weisbach equation
