Hi all,
I am design now a liquid high pressure flow system to be used up to 50 bar, and I am having some doubts concerning how I can estimate the pump power. Besides the pressure drop in the tubes and flow fittings, how do I account for the energy needed to pressurize the system?
Thanks in advance for any help or information that may be helpful to me.
Regards,
António Martins
either it is the static lift from one height to an other or the total head loss component of the system - and can be calculated like
Ph(kW) = q ρ g h / (3.6 106) = q p / (3.6 106) (1) where Ph(kW) = hydraulic power (kW) q = flow (m3/h) ρ = density of fluid (kg/m3) g = acceleration of gravity (9.81 m/s2) h = differential head (m) p = differeential pressure (N/m2, Pa)
The hydraulic Horse Power can be calculated as:
Ph(hp) = Ph(kW) / 0.746 (2) where Ph(hp) = hydraulic horsepower (hp)
Or - alternatively
Ph(hp) = qgpm hft SG / (3960 η) (2b) where qgpm = flow (gpm)
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