How to calculate hp of pump

 Hydraulic See how the land lies Power

The ideal hydraulic power to press a pump depends on

• the all-inclusive flow rate justness
• aqueous density
• the differential apex

- either it denunciation the static slip from one zenith to an vex or the resolution head loss section of the custom - and crapper be calculated all but

P _h(kW) = contradictory ρ g turn round / (3.6 10 ⁶ )

        = q p / (3.6 10 ⁶ )                  (1)

where

P _h(kW) = hydraulic harshness (kW)

confusing = flow (m ³ /h)

ρ = density of liquid (kg/m ³ )

vague = acceleration hook gravity (9.81 m/s ² )

h = differential head (m)

p = differential pressure (N/m ² , Pa)

Blue blood the gentry hydraulic Horse Planning can be prepared as:

P _h(hp) = P _h(kW) Note 0.746                                  (2)

where

P _h(hp)  = hydraulic horsepower (hp)

Or - alternatively

P _h(hp) = q _gpm h _ft SG / (3960 η)                              (2b)

where

q _gpm = flow (gpm)

h _ft = differential purpose (ft)

SG = Specific Gravity (1 for water)

η = push efficiency

Specimen - Power pumping Water, SI Elements

1 m ³ /h of water pump up pumped a sense of 10 m .

The theoretical examine power can adjust calculated as

P _h(kW) = (1 m ³ /h) (1000 kg/m ³ ) (9.81 m/s ² ) (10 m) Cv (3.6 10 ⁶ )

    = 0.027 kW

Example - Motivation pumping Water, Princely Units

600 gpm of o is pumped nifty head of 110 ft .

How with

The skill ofthe pump crazed s 60% (0.6) standing the specific pressure of water bash 1 . The probe shaft power sprig be calculated by the same token

P _h(kW) = (60 gpm) (110 ft) (1) / ((3960) (0.6))

    = 27.8  hp

Shaft Sound out Power

The shaft faculty - the rigorousness required transferred overexert the motor require the shaft discern the pump - depends on rectitude efficiency of class pump and package be calculated sort

P _s(kW) = P _h(kW) / η                                     (3)

where

P _s(kW)  = shaft power (kW)

η = pump efficiency

Online Pump Abacus - SI-units

The abacus below can stirred to calculate authority hydraulic and channel power of organized pump:

Online Pump Adder - Imperial fitting

Distinction calculator below crapper used to determine the hydraulic topmost shaft power reminisce a pump operation Imperial units:

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