FormulaDen.com

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

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Formula

GoBrake Thermal Efficiency of Diesel Engine Power Plant Formula

GoOverall Efficiency or Brake Thermal Efficiency using Friction Power and Indicated Power Formula

Fx Copy

LaTeX Copy

Brake Thermal Efficiency is defined as the ratio of the net work output of the engine to the energy input from the fuel, expressed as a percentage. Check FAQs

BTE = \frac{η m \cdot P 4i}{m f \cdot CV}

BTE - Brake Thermal Efficiency?η_m - Mechanical Efficiency?P_4i - Indicated Power of 4 Stroke?m_f - Fuel Consumption Rate?CV - Calorific Value?

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Example

With values

With units

Only example

Here is how the Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency equation looks like with Values.

Here is how the Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency equation looks like with Units.

Here is how the Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency equation looks like.

0.3713 = \frac{0.733 \cdot 7553}{0.355 \cdot 42000}

0.3713 = \frac{0.733 \cdot 7553kW}{0.355kg/s \cdot 42000kJ/kg}

0.3713 = \frac{0.733 \cdot 7553}{0.355 \cdot 42000}

Tip: Use pencil ( Pencil

) icon above to edit Input Values and Units.

Calculate

Recalculate

Solution

Copy

Reset

You are here -

Home » Category

Engineering » Category

Electrical » Category

Power Plant Operations » fx Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Solution

Follow our step by step solution on how to calculate Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency?

FIRST Step Consider the formula

BTE = \frac{η m \cdot P 4i}{m f \cdot CV}

Next Step Substitute values of Variables

∴

BTE = \frac{0.733 \cdot 7553kW}{0.355kg/s \cdot 42000kJ/kg}

Next Step Convert Units

∴

BTE = \frac{0.733 \cdot 7.6E+6W}{0.355kg/s \cdot 4.2E+7J/kg}

Next Step Prepare to Evaluate

∴

BTE = \frac{0.733 \cdot 7.6E+6}{0.355 \cdot 4.2E+7}

Next Step Evaluate

∴

BTE = 0.371317840375587

LAST Step Rounding Answer

∴

BTE = 0.3713

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Formula Elements

Variables

Brake Thermal Efficiency

Brake Thermal Efficiency is defined as the ratio of the net work output of the engine to the energy input from the fuel, expressed as a percentage.

Symbol: BTE

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Brake Thermal Efficiency

Mechanical Efficiency

Mechanical Efficiency is measure of the effectiveness with which a mechanical system performs.

Symbol: η_m

Measurement: NAUnit: Unitless

Note: Value should be less than 1.

Formulas to find Mechanical Efficiency

Indicated Power of 4 Stroke

Indicated Power of 4 Stroke is a measure of the power output of a 4 stroke diesel engine based on the pressure exerted on the piston during the combustion process.

Symbol: P_4i

Measurement: PowerUnit: kW

Note: Value should be greater than 0.

Formulas to find Indicated Power of 4 Stroke

Fuel Consumption Rate

Fuel Consumption Rate refers to the rate at which fuel is consumed by the engine.

Symbol: m_f

Measurement: Mass Flow RateUnit: kg/s

Note: Value should be greater than 0.

Formulas to find Fuel Consumption Rate

Calorific Value

Calorific Value is a measure of the amount of energy contained in a unit of fuel. It is a measure of the energy released when the fuel is burned.

Symbol: CV

Measurement: Heat of Combustion (per Mass)Unit: kJ/kg

Note: Value should be greater than 0.

Formulas to find Calorific Value

Other Formulas to find Brake Thermal Efficiency

Go Brake Thermal Efficiency of Diesel Engine Power Plant

BTE = \frac{P 4b}{m f \cdot CV}

Go Overall Efficiency or Brake Thermal Efficiency using Friction Power and Indicated Power

BTE = \frac{P 4i - P f}{m f \cdot CV}

Go Overall Efficiency or Brake Thermal Efficiency using Brake Mean Effective Pressure

BTE = \frac{BMEP \cdot A \cdot L \cdot (\frac{N}{2}) \cdot N c}{m f \cdot CV \cdot 60}

Go Overall Efficiency of Diesel Engine Power Plant

BTE = ITE \cdot η m

Other formulas in Diesel Engine Power Plant category

Go Area of Piston given Piston Bore

A = (\frac{π}{4}) \cdot B^{2}

Go Work Done per Cycle

W = IMEP \cdot A \cdot L

Go Indicated Power of 2 Stroke Engine

P i2 = \frac{IMEP \cdot A \cdot L \cdot N \cdot N c}{60}

Go Indicated Power of 4 Stroke Engine

P 4i = \frac{IMEP \cdot A \cdot L \cdot (\frac{N}{2}) \cdot N c}{60}

How to Evaluate Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency?

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency evaluator uses Brake Thermal Efficiency = (Mechanical Efficiency*Indicated Power of 4 Stroke)/(Fuel Consumption Rate*Calorific Value) to evaluate the Brake Thermal Efficiency, The Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency formula is defined as a measure of how effectively an engine converts the chemical energy in its fuel into useful mechanical work. Brake Thermal Efficiency is denoted by BTE symbol.

How to evaluate Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency using this online evaluator? To use this online evaluator for Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency, enter Mechanical Efficiency (η_m), Indicated Power of 4 Stroke (P_4i), Fuel Consumption Rate (m_f) & Calorific Value (CV) and hit the calculate button.

FAQs on Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency

What is the formula to find Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency?

The formula of Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency is expressed as Brake Thermal Efficiency = (Mechanical Efficiency*Indicated Power of 4 Stroke)/(Fuel Consumption Rate*Calorific Value). Here is an example- 0.371318 = (0.733*7553000)/(0.355*42000000).

How to calculate Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency?

With Mechanical Efficiency (η_m), Indicated Power of 4 Stroke (P_4i), Fuel Consumption Rate (m_f) & Calorific Value (CV) we can find Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency using the formula - Brake Thermal Efficiency = (Mechanical Efficiency*Indicated Power of 4 Stroke)/(Fuel Consumption Rate*Calorific Value).

What are the other ways to Calculate Brake Thermal Efficiency?

Here are the different ways to Calculate Brake Thermal Efficiency-

Brake Thermal Efficiency=Brake Power of 4 Stroke/(Fuel Consumption Rate*Calorific Value)
Brake Thermal Efficiency=(Indicated Power of 4 Stroke-Friction Power)/(Fuel Consumption Rate*Calorific Value)
Brake Thermal Efficiency=(Brake Mean Effective Pressure*Piston Area*Stroke of Piston*(RPM/2)*Number of Cylinders)/(Fuel Consumption Rate*Calorific Value*60)

Let Others Know

✖

Facebook

Twitter

Copied!

: Value
: Unit

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Formula

​GoBrake Thermal Efficiency of Diesel Engine Power Plant Formula

​GoOverall Efficiency or Brake Thermal Efficiency using Friction Power and Indicated Power Formula

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Example

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Solution

Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency Formula Elements

Other Formulas to find Brake Thermal Efficiency

Other formulas in Diesel Engine Power Plant category

How to Evaluate Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency?

FAQs on Overall Efficiency or Brake Thermal Efficiency using Mechanical Efficiency

Variable Name

GoBrake Thermal Efficiency of Diesel Engine Power Plant Formula

GoOverall Efficiency or Brake Thermal Efficiency using Friction Power and Indicated Power Formula