Centrifugal pump shaft power how to calculate, shaft power is what?
by：J&T
2020-06-17
One, the formula of centrifugal pump shaft power flow & times;
Head & times;
9.
81×
The proportion of medium & divide;
3600÷
efficiency flow units: cubic/hour, head unit: m P = 2.
73 hq /η
M, which H as the head, unit, Q for traffic, units for the m3 / H, & eta;
For the pump efficiency.
P for shaft power, the unit KW.
That is the pump shaft power P = & rho;
gQH / 1000η
(
千瓦)
Which & rho;
=1000Kg/m3,g=9.
8 the proportion of the unit is Kg/m3, the flow units for the m3 / h, head of the unit is m, 1 Kg = 9.
8 Newton traffic proportion P = * * head * 9.
Newton/Kg = 8 Kg/m3 * m3 / h * m * 9.
8 Newton/Kg = 9.
8 a Newton * m / 3600 seconds = * m / 367 seconds = w / 367 is the origin of the unit is derived above, the type is the calculation of water power, shaft power divided by efficiency is obtained.
A shaft power for the Ne, motor power of P, K coefficient (
Efficiency of the bottom)
Motor power (P = Ne * K
K in Ne have different values, see table below)
Ne≤
22 K = 1。
252255 (2) what is the efficiency of the pump?
The formula?
A: the effective power of the pump and the ratio of the shaft power.
η
= Pe/P pump power usually refers to the input power, the power of the prime mover to the pump shaft, so it is also called shaft power, expressed in P.
Effective power: water pump lift and the product of the mass flow rate and the acceleration of gravity.
Pe =ρ
G QH W or Pe = & gamma;
QH / 1000 (
千瓦)
ρ
The density of the fluid (the: water pump
kg/m3)
γ
: pump liquid heavy & gamma;
=ρ
g (
N / m3)
G: the acceleration of gravity (
m/s)
Mass flow Qm = & rho;
Q t/h or kg/s three, pump efficiency and its calculation formula of the effective power of the water pump and the ratio of the shaft power.
η
= Pe/P pump power usually refers to the input power, the power of the prime mover to the pump shaft, so it is also called shaft power, expressed in P.
Effective power: pump lift and the product of the mass flow rate and the acceleration of gravity.
Pe =ρ
g QH (
W)
Or Pe = & gamma;
QH / 1000 (
千瓦)
ρ
The density of the fluid (the: pump
kg/m3)
γ
: pump liquid heavy & gamma;
=ρ
g (
N / m3)
G: the acceleration of gravity (
m/s)
Mass flow Qm = & rho;
Q (
T/h or kg/s)
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The manufacture marketing game of water pump is changing with each innovation, and businesses of all products need to be ready to pounce.
Growing revenue is a common goal for many businesses. We want to be sure JT include leaders from the marketing, sales and production departments to help make certain that the goals we choose are appropriate and have strong support.
In conjunction with retraining and upskilling efforts, J&T INDUSTRY CO.,LTD.’s workers should focus on growing unique human skills that high-tech machines are unable to replicate, such as strategic and abstract thinking, complex communications, creativity and leadership competencies.
