Vane efficiency Calculator

✖The Actual Head of Pump is the actual head imparted by the impeller to the liquid in the centrifugal pump.ⓘ Actual Head of Pump [H_act]			+10% -10%
✖Euler Head of Pump is the ideal head imparted by the impeller to the liquid in the centrifugal pump when the effect of slip is neglected.ⓘ Euler Head of Pump [H_e]			+10% -10%

✖Vane Efficiency is the effectiveness of the vanes in the pumps.ⓘ Vane efficiency [ε]

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Formula

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Vane efficiency

Formula

`"ε" = "H"_{"act"}/"H"_{"e"}`

Example

`"0.842105"="12.8m"/"15.2m"`

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Vane efficiency Solution

STEP 0: Pre-Calculation Summary

Formula Used

Vane Efficiency = Actual Head of Pump/Euler Head of Pump
ε = H_act/H_e
This formula uses 3 Variables

Variables Used

Vane Efficiency - Vane Efficiency is the effectiveness of the vanes in the pumps.
Actual Head of Pump - (Measured in Meter) - The Actual Head of Pump is the actual head imparted by the impeller to the liquid in the centrifugal pump.
Euler Head of Pump - (Measured in Meter) - Euler Head of Pump is the ideal head imparted by the impeller to the liquid in the centrifugal pump when the effect of slip is neglected.

STEP 1: Convert Input(s) to Base Unit

Actual Head of Pump: 12.8 Meter --> 12.8 Meter No Conversion Required
Euler Head of Pump: 15.2 Meter --> 15.2 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

ε = H_act/H_e --> 12.8/15.2

Evaluating ... ...

ε = 0.842105263157895

STEP 3: Convert Result to Output's Unit

0.842105263157895 --> No Conversion Required

FINAL ANSWER

0.842105263157895 ≈ 0.842105 <-- Vane Efficiency

(Calculation completed in 00.004 seconds)

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Created by Sagar S Kulkarni

Dayananda Sagar College of Engineering (DSCE), Bengaluru

Sagar S Kulkarni has created this Calculator and 200+ more calculators!

Verified by Chilvera Bhanu Teja

Institute of Aeronautical Engineering (IARE), Hyderabad

Chilvera Bhanu Teja has verified this Calculator and 200+ more calculators!

< 19 Geometric and Flow Parameters Calculators

Mechanical efficiency given Specific Weight of Liquid

Go Mechanical efficiency of centrifugal pump = (Specific weight of fluid in pump*(Actual discharge at centrifugal pump outlet+Leakage of Liquid from Impeller)*(Velocity of Whirl at Outlet*Tangential Velocity of Impeller at Outlet/[g]))/Input power to centrifugal pump

Overall efficiency

Go Overall efficiency of centrifugal pump = (Specific weight of fluid in pump*Actual discharge at centrifugal pump outlet*Manometric Head of Centrifugal Pump)/Input power to centrifugal pump

Flow velocity at outlet given volume of liquid

Go Flow velocity at outlet of centrifugal pump = Actual discharge at centrifugal pump outlet/(pi*Diameter of centrifugal pump impeller at outlet*Width of Impeller at Outlet)

Volume of liquid at outlet

Go Actual discharge at centrifugal pump outlet = pi*Diameter of centrifugal pump impeller at outlet*Width of Impeller at Outlet*Flow velocity at outlet of centrifugal pump

Flow velocity at inlet given volume of liquid

Go Flow velocity at inlet of centrifugal pump = Actual discharge at centrifugal pump outlet/(pi*Diameter of centrifugal pump impeller at inlet*Width of Impeller at Inlet)

Volume of liquid at inlet

Go Actual discharge at centrifugal pump outlet = pi*Diameter of centrifugal pump impeller at inlet*Width of Impeller at Inlet*Flow velocity at inlet of centrifugal pump

Thoma's cavitation factor

Go Thoma's Cavitation Factor = (Atmospheric Pressure Head for Pump-Suction head of centrifugal pump-Vapour Pressure Head)/Manometric Head of Centrifugal Pump

Leakage of Liquid given Volumetric Efficiency and Discharge

Go Leakage of Liquid from Impeller = (Actual discharge at centrifugal pump outlet/Volumetric efficiency of centrifugal pump)-Actual discharge at centrifugal pump outlet

Torque at outlet

Go Torque at Centrifugal Pump Outlet = (Weight of liquid in pump/[g])*Velocity of Whirl at Outlet*Radius of Impeller at Outlet

Flow velocity given flow ratio

Go Flow velocity at outlet of centrifugal pump = Flow ratio centrifugal pump*sqrt(2*[g]*Manometric Head of Centrifugal Pump)

Flow ratio

Go Flow ratio centrifugal pump = Flow velocity at outlet of centrifugal pump/sqrt(2*[g]*Manometric Head of Centrifugal Pump)

Diameter of delivery pipe

Go Diameter of delivery pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Delivery Pipe))

Speed ratio

Go Speed ratio centrifugal pump = Tangential Velocity of Impeller at Outlet/sqrt(2*[g]*Manometric Head of Centrifugal Pump)

Diameter of suction pipe

Go Diameter of suction pipe of pump = sqrt((4*Actual discharge at centrifugal pump outlet)/(pi*Velocity in Suction Pipe))

Net positive suction head

Go Net Positive Suction Head of Centrifugal Pump = Atmospheric Pressure Head for Pump-Static Head of Centrifugal Pump-Vapour Pressure Head

Thoma's Cavitation factor given Net Positive Suction Head

Go Thoma's Cavitation Factor = Net Positive Suction Head of Centrifugal Pump/Manometric Head of Centrifugal Pump

Weight of liquid

Go Weight of liquid in pump = Specific Weight of Liquid*Actual discharge at centrifugal pump outlet

Static head

Go Static Head of Centrifugal Pump = Suction head of centrifugal pump+Delivery head of pump

Vane efficiency

Go Vane Efficiency = Actual Head of Pump/Euler Head of Pump

Vane efficiency Formula

Vane Efficiency = Actual Head of Pump/Euler Head of Pump
ε = H_act/H_e

What is the general value of vane efficiency?

It has been observed through experiments that as the number of vanes is increased the value of ε increases and approaches unity. The value of ε, in addition to number of vanes, depends on the shape of the vane and the outlet vane angle. In general, for radial flow pumps the value of ε varies from 0.6 to 0.8 as the number of vanes is increased from 4 to 12. However, for impeller with vanes more than 24 the value of ε may be taken as unity, unless mentioned otherwise.

How to Calculate Vane efficiency?

Vane efficiency calculator uses Vane Efficiency = Actual Head of Pump/Euler Head of Pump to calculate the Vane Efficiency, The Vane efficiency formula is defined as the ratio of actual head imparted by the impeller to the Euler head. Vane Efficiency is denoted by ε symbol.

How to calculate Vane efficiency using this online calculator? To use this online calculator for Vane efficiency, enter Actual Head of Pump (H_act) & Euler Head of Pump (H_e) and hit the calculate button. Here is how the Vane efficiency calculation can be explained with given input values -> 0.842105 = 12.8/15.2.

FAQ

What is Vane efficiency?

The Vane efficiency formula is defined as the ratio of actual head imparted by the impeller to the Euler head and is represented as ε = H_act/H_e or Vane Efficiency = Actual Head of Pump/Euler Head of Pump. The Actual Head of Pump is the actual head imparted by the impeller to the liquid in the centrifugal pump & Euler Head of Pump is the ideal head imparted by the impeller to the liquid in the centrifugal pump when the effect of slip is neglected.

How to calculate Vane efficiency?

The Vane efficiency formula is defined as the ratio of actual head imparted by the impeller to the Euler head is calculated using Vane Efficiency = Actual Head of Pump/Euler Head of Pump. To calculate Vane efficiency, you need Actual Head of Pump (H_act) & Euler Head of Pump (H_e). With our tool, you need to enter the respective value for Actual Head of Pump & Euler Head of Pump and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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