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Volumetric Efficiency of Pump given Discharge and Leakage of Liquid Formula

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Volumetric efficiency of centrifugal pump is the ratio of the quantity of the liquid discharged per second from pump to quantity passing per second through impeller. Check FAQs

η vol = \frac{Q}{Q + q}

η_vol - Volumetric Efficiency of Centrifugal Pump?Q - Actual Discharge at Centrifugal Pump Outlet?q - Leakage of Liquid from Impeller?

Volumetric Efficiency of Pump given Discharge and Leakage of Liquid Example

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Here is how the Volumetric Efficiency of Pump given Discharge and Leakage of Liquid equation looks like with Values.

Here is how the Volumetric Efficiency of Pump given Discharge and Leakage of Liquid equation looks like with Units.

Here is how the Volumetric Efficiency of Pump given Discharge and Leakage of Liquid equation looks like.

0.9508 = \frac{0.056}{0.056 + 0.0029}

0.9508 = \frac{0.056m³/s}{0.056m³/s + 0.0029m³/s}

0.9508 = \frac{0.056}{0.056 + 0.0029}

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Volumetric Efficiency of Pump given Discharge and Leakage of Liquid Solution

Follow our step by step solution on how to calculate Volumetric Efficiency of Pump given Discharge and Leakage of Liquid?

FIRST Step Consider the formula

η vol = \frac{Q}{Q + q}

Next Step Substitute values of Variables

∴

η vol = \frac{0.056m³/s}{0.056m³/s + 0.0029m³/s}

Next Step Prepare to Evaluate

∴

η vol = \frac{0.056}{0.056 + 0.0029}

Next Step Evaluate

∴

η vol = 0.950764006791171

LAST Step Rounding Answer

∴

η vol = 0.9508

Volumetric Efficiency of Pump given Discharge and Leakage of Liquid Formula Elements

Variables

Volumetric Efficiency of Centrifugal Pump

Volumetric efficiency of centrifugal pump is the ratio of the quantity of the liquid discharged per second from pump to quantity passing per second through impeller.

Symbol: η_vol

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Volumetric Efficiency of Centrifugal Pump

Actual Discharge at Centrifugal Pump Outlet

Actual discharge at centrifugal pump outlet is the actual amount of the liquid outflow from the outlet of the centrifugal pump.

Symbol: Q

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Actual Discharge at Centrifugal Pump Outlet

Leakage of Liquid from Impeller

Leakage of Liquid from Impeller is the amount of the fluid or liquid leaking from the impeller per second.

Symbol: q

Measurement: Volumetric Flow RateUnit: m³/s

Note: Value should be greater than 0.

Formulas to find Leakage of Liquid from Impeller

Other formulas in Pump Parameters category

Go Angular Velocity of Centrifugal Pump

ω = \frac{2 \cdot π \cdot N r}{60}

Go Minimum speed for starting centrifugal pump

N min = \frac{120 \cdot η m \cdot V w2 \cdot D 2}{π \cdot ({D 2}^{2} - {D 1}^{2})} \cdot (\frac{2 \cdot π}{60})

Go Output power

OP = \frac{w \cdot Q \cdot H m}{1000}

Go Static power

P = \frac{w \cdot Q \cdot H st}{1000}

How to Evaluate Volumetric Efficiency of Pump given Discharge and Leakage of Liquid?

Volumetric Efficiency of Pump given Discharge and Leakage of Liquid evaluator uses Volumetric Efficiency of Centrifugal Pump = Actual Discharge at Centrifugal Pump Outlet/(Actual Discharge at Centrifugal Pump Outlet+Leakage of Liquid from Impeller) to evaluate the Volumetric Efficiency of Centrifugal Pump, Volumetric Efficiency of Pump given Discharge and Leakage of Liquid formula is defined as a measure of the effectiveness of a pump in transferring fluid, comparing the actual amount of liquid discharged to the total amount of liquid that enters the pump, including leakage. Volumetric Efficiency of Centrifugal Pump is denoted by η_vol symbol.

How to evaluate Volumetric Efficiency of Pump given Discharge and Leakage of Liquid using this online evaluator? To use this online evaluator for Volumetric Efficiency of Pump given Discharge and Leakage of Liquid, enter Actual Discharge at Centrifugal Pump Outlet (Q) & Leakage of Liquid from Impeller (q) and hit the calculate button.

FAQs on Volumetric Efficiency of Pump given Discharge and Leakage of Liquid

What is the formula to find Volumetric Efficiency of Pump given Discharge and Leakage of Liquid?

The formula of Volumetric Efficiency of Pump given Discharge and Leakage of Liquid is expressed as Volumetric Efficiency of Centrifugal Pump = Actual Discharge at Centrifugal Pump Outlet/(Actual Discharge at Centrifugal Pump Outlet+Leakage of Liquid from Impeller). Here is an example- 0.950764 = 0.056/(0.056+0.0029).

How to calculate Volumetric Efficiency of Pump given Discharge and Leakage of Liquid?

With Actual Discharge at Centrifugal Pump Outlet (Q) & Leakage of Liquid from Impeller (q) we can find Volumetric Efficiency of Pump given Discharge and Leakage of Liquid using the formula - Volumetric Efficiency of Centrifugal Pump = Actual Discharge at Centrifugal Pump Outlet/(Actual Discharge at Centrifugal Pump Outlet+Leakage of Liquid from Impeller).

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