Manometric Efficiency using Velocities Calculator

✖The Manometric Head of Centrifugal Pump is the head against which the centrifugal pump has to work.ⓘ Manometric Head of Centrifugal Pump [H_m]			+10% -10%
✖The Velocity of Whirl at Outlet is the tangential component of absolute velocity at the blade outlet.ⓘ Velocity of Whirl at Outlet [V_w2]			+10% -10%
✖The Tangential Velocity of Impeller at Outlet is the velocity of the impeller at the fluid outlet.ⓘ Tangential Velocity of Impeller at Outlet [u₂]			+10% -10%

✖Manometric Efficiency of Centrifugal Pump is the ratio of manometric head and head imparted by the impeller.ⓘ Manometric Efficiency using Velocities [η_m]

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Formula

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Manometric Efficiency using Velocities

Formula

`"η"_{"m"} = ("[g]"*"H"_{"m"})/("V"_{"w2"}*"u"_{"2"})`

Example

`"0.816146"=("[g]"*"25.3m")/("16m/s"*"19m/s")`

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Manometric Efficiency using Velocities Solution

STEP 0: Pre-Calculation Summary

Formula Used

Manometric Efficiency of Centrifugal Pump = ([g]*Manometric Head of Centrifugal Pump)/(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet)
η_m = ([g]*H_m)/(V_w2*u₂)
This formula uses 1 Constants, 4 Variables

Constants Used

[g] - Gravitational acceleration on Earth Value Taken As 9.80665

Variables Used

Manometric Efficiency of Centrifugal Pump - Manometric Efficiency of Centrifugal Pump is the ratio of manometric head and head imparted by the impeller.
Manometric Head of Centrifugal Pump - (Measured in Meter) - The Manometric Head of Centrifugal Pump is the head against which the centrifugal pump has to work.
Velocity of Whirl at Outlet - (Measured in Meter per Second) - The Velocity of Whirl at Outlet is the tangential component of absolute velocity at the blade outlet.
Tangential Velocity of Impeller at Outlet - (Measured in Meter per Second) - The Tangential Velocity of Impeller at Outlet is the velocity of the impeller at the fluid outlet.

STEP 1: Convert Input(s) to Base Unit

Manometric Head of Centrifugal Pump: 25.3 Meter --> 25.3 Meter No Conversion Required
Velocity of Whirl at Outlet: 16 Meter per Second --> 16 Meter per Second No Conversion Required
Tangential Velocity of Impeller at Outlet: 19 Meter per Second --> 19 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η_m = ([g]*H_m)/(V_w2*u₂) --> ([g]*25.3)/(16*19)

Evaluating ... ...

η_m = 0.816145542763158

STEP 3: Convert Result to Output's Unit

0.816145542763158 --> No Conversion Required

FINAL ANSWER

0.816145542763158 ≈ 0.816146 <-- Manometric Efficiency of Centrifugal Pump

(Calculation completed in 00.004 seconds)

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< 9 Manometer Parameter Calculators

Manometric Head using Total Head at Outlet and Inlet of Pump

Go Manometric Head of Centrifugal Pump = ((Pressure at Pump Outlet/Specific weight of fluid in pump)+((Velocity in Delivery Pipe^2)/(2*[g]))+Datum Head at Pump Outlet)-((Pressure at pump inlet/Specific weight of fluid in pump)+((Velocity in Suction Pipe^2)/(2*[g]))+Datum Head at Pump Inlet)

Manometric head given static head, friction losses in suction and delivery pipes

Go Manometric Head of Centrifugal Pump = (Suction head of centrifugal pump+Delivery head of pump)+(Friction Head Loss in Pump Suction Pipe+Friction Head Loss in Pump Delivery Pipe)+(Velocity in Delivery Pipe^2)/(2*[g])

Manometric Head using Static Head and Losses in Pipes

Go Manometric Head of Centrifugal Pump = Static Head of Centrifugal Pump+Friction Head Loss in Pump Delivery Pipe+Friction Head Loss in Pump Suction Pipe+(Velocity in Delivery Pipe^2)/(2*[g])

Manometric head given head imparted by impeller and loss of head in pump

Go Manometric Head of Centrifugal Pump = (Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet/[g])-(Head Loss in Pump Impeller+Head Loss in Pump Casing)

Manometric Efficiency using Velocities

Go Manometric Efficiency of Centrifugal Pump = ([g]*Manometric Head of Centrifugal Pump)/(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet)

Overall Efficiency using Manometric, Volumetric and Mechanical Efficiencies

Go Overall efficiency of centrifugal pump = Manometric Efficiency of Centrifugal Pump*Volumetric efficiency of centrifugal pump*Mechanical efficiency of centrifugal pump

Manometric head given outlet impeller diameter, impeller speed and speed ratio

Go Manometric Head of Centrifugal Pump = ((Diameter of centrifugal pump impeller at outlet*Angular velocity of centrifugal pump)/(84.6*Speed ratio centrifugal pump))^2

Manometric head given head imparted by impeller if loss of head in pump is zero

Go Manometric Head of Centrifugal Pump = (Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet)/[g]

Manometric efficiency

Go Manometric Efficiency of Centrifugal Pump = Manometric Head of Centrifugal Pump/Head Imparted by Impeller to Liquid

Manometric Efficiency using Velocities Formula

Manometric Efficiency of Centrifugal Pump = ([g]*Manometric Head of Centrifugal Pump)/(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet)
η_m = ([g]*H_m)/(V_w2*u₂)

What is manometric efficiency?

The ratio of the manometric head developed by the pump to the head imparted by the impeller to the liquid is known as manometric efficiency.

How to Calculate Manometric Efficiency using Velocities?

Manometric Efficiency using Velocities calculator uses Manometric Efficiency of Centrifugal Pump = ([g]*Manometric Head of Centrifugal Pump)/(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet) to calculate the Manometric Efficiency of Centrifugal Pump, The Manometric efficiency using velocities formula is defined as the ratio of product of acceleration due to gravity and manometric head to the product of whirl velocity and tangential velocity of impeller at outlet. Manometric Efficiency of Centrifugal Pump is denoted by η_m symbol.

How to calculate Manometric Efficiency using Velocities using this online calculator? To use this online calculator for Manometric Efficiency using Velocities, enter Manometric Head of Centrifugal Pump (H_m), Velocity of Whirl at Outlet (V_w2) & Tangential Velocity of Impeller at Outlet (u₂) and hit the calculate button. Here is how the Manometric Efficiency using Velocities calculation can be explained with given input values -> 0.816146 = ([g]*25.3)/(16*19).

FAQ

What is Manometric Efficiency using Velocities?

The Manometric efficiency using velocities formula is defined as the ratio of product of acceleration due to gravity and manometric head to the product of whirl velocity and tangential velocity of impeller at outlet and is represented as η_m = ([g]*H_m)/(V_w2*u₂) or Manometric Efficiency of Centrifugal Pump = ([g]*Manometric Head of Centrifugal Pump)/(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet). The Manometric Head of Centrifugal Pump is the head against which the centrifugal pump has to work, The Velocity of Whirl at Outlet is the tangential component of absolute velocity at the blade outlet & The Tangential Velocity of Impeller at Outlet is the velocity of the impeller at the fluid outlet.

How to calculate Manometric Efficiency using Velocities?

The Manometric efficiency using velocities formula is defined as the ratio of product of acceleration due to gravity and manometric head to the product of whirl velocity and tangential velocity of impeller at outlet is calculated using Manometric Efficiency of Centrifugal Pump = ([g]*Manometric Head of Centrifugal Pump)/(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet). To calculate Manometric Efficiency using Velocities, you need Manometric Head of Centrifugal Pump (H_m), Velocity of Whirl at Outlet (V_w2) & Tangential Velocity of Impeller at Outlet (u₂). With our tool, you need to enter the respective value for Manometric Head of Centrifugal Pump, Velocity of Whirl at Outlet & Tangential Velocity of Impeller at Outlet and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Manometric Efficiency of Centrifugal Pump?

In this formula, Manometric Efficiency of Centrifugal Pump uses Manometric Head of Centrifugal Pump, Velocity of Whirl at Outlet & Tangential Velocity of Impeller at Outlet. We can use 1 other way(s) to calculate the same, which is/are as follows -

Manometric Efficiency of Centrifugal Pump = Manometric Head of Centrifugal Pump/Head Imparted by Impeller to Liquid

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