FormulaDen.com

Physics Chemistry Math Chemical Engineering Civil Electrical Electronics Electronics and Instrumentation Materials Science Mechanical Production Engineering Financial Health

Overall efficiency Formula

Fx Copy

LaTeX Copy

Overall efficiency of centrifugal pump is the ratio of the power output of the pump to the power input to the pump. Check FAQs

η o = \frac{w \cdot Q \cdot H m}{P in}

η_o - Overall Efficiency of Centrifugal Pump?w - Specific Weight of Fluid in Pump?Q - Actual Discharge at Centrifugal Pump Outlet?H_m - Manometric Head of Centrifugal Pump?P_in - Input Power to Centrifugal Pump?

Overall efficiency Example

With values

With units

Only example

Here is how the Overall efficiency equation looks like with Values.

Here is how the Overall efficiency equation looks like with Units.

Here is how the Overall efficiency equation looks like.

0.4412 = \frac{9.81 \cdot 0.056 \cdot 25.3}{31.5}

0.4412 = \frac{9.81kN/m³ \cdot 0.056m³/s \cdot 25.3m}{31.5kW}

0.4412 = \frac{9.81 \cdot 0.056 \cdot 25.3}{31.5}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Physics » Category

Mechanical » Category

Fluid Mechanics » fx Overall efficiency

Overall efficiency Solution

Follow our step by step solution on how to calculate Overall efficiency?

FIRST Step Consider the formula

η o = \frac{w \cdot Q \cdot H m}{P in}

Next Step Substitute values of Variables

∴

η o = \frac{9.81kN/m³ \cdot 0.056m³/s \cdot 25.3m}{31.5kW}

Next Step Convert Units

∴

η o = \frac{9810N/m³ \cdot 0.056m³/s \cdot 25.3m}{31500W}

Next Step Prepare to Evaluate

∴

η o = \frac{9810 \cdot 0.056 \cdot 25.3}{31500}

Next Step Evaluate

∴

η o = 0.441232

LAST Step Rounding Answer

∴

η o = 0.4412

Overall efficiency Formula Elements

Variables

Overall Efficiency of Centrifugal Pump

Overall efficiency of centrifugal pump is the ratio of the power output of the pump to the power input to the pump.

Symbol: η_o

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Overall Efficiency of Centrifugal Pump

Specific Weight of Fluid in Pump

Specific weight of fluid in pump is the weight of fluid per unit volume.

Symbol: w

Measurement: Specific WeightUnit: kN/m³

Note: Value should be greater than 0.

Formulas to find Specific Weight of Fluid in 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

Manometric Head of Centrifugal Pump

The Manometric Head of Centrifugal Pump is the head against which the centrifugal pump has to work.

Symbol: H_m

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Manometric Head of Centrifugal Pump

Input Power to Centrifugal Pump

Input power to centrifugal pump is the power at the input or the inlet of a centrifugal pump.

Symbol: P_in

Measurement: PowerUnit: kW

Note: Value should be greater than 0.

Formulas to find Input Power to Centrifugal Pump

Other formulas in Geometric and Flow Parameters category

Go Speed ratio

K u = \frac{u 2}{\sqrt{2 \cdot [g] \cdot H m}}

Go Volume of liquid at inlet

Q = π \cdot D 1 \cdot B 1 \cdot V f1

Go Weight of liquid

W l = y \cdot Q

Go Static head

H st = h s + h d

How to Evaluate Overall efficiency?

Overall efficiency evaluator uses 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 to evaluate the Overall Efficiency of Centrifugal Pump, Overall efficiency formula is defined as a measure of the ratio of the pump's output power to its input power, providing a quantitative assessment of the pump's ability to convert mechanical energy into useful hydraulic energy in a centrifugal pump system. Overall Efficiency of Centrifugal Pump is denoted by η_o symbol.

How to evaluate Overall efficiency using this online evaluator? To use this online evaluator for Overall efficiency, enter Specific Weight of Fluid in Pump (w), Actual Discharge at Centrifugal Pump Outlet (Q), Manometric Head of Centrifugal Pump (H_m) & Input Power to Centrifugal Pump (P_in) and hit the calculate button.

FAQs on Overall efficiency

What is the formula to find Overall efficiency?

The formula of Overall efficiency is expressed as 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. Here is an example- 0.441232 = (9810*0.056*25.3)/31500.

How to calculate Overall efficiency?

With Specific Weight of Fluid in Pump (w), Actual Discharge at Centrifugal Pump Outlet (Q), Manometric Head of Centrifugal Pump (H_m) & Input Power to Centrifugal Pump (P_in) we can find Overall efficiency using the formula - 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.

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Overall efficiency Formula

Overall efficiency Example

Overall efficiency Solution

Overall efficiency Formula Elements

Other formulas in Geometric and Flow Parameters category

How to Evaluate Overall efficiency?

FAQs on Overall efficiency

Variable Name