Brake Thermal Efficiency given Brake Power Calculator

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Engine Performance Parameters

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✖Brake Power is the power available at the crankshaft.ⓘ Brake Power [BP]			+10% -10%
✖Mass of fuel supplied per second is the amount of the mass of the fuel that is supplied per second to an engine or to a system.ⓘ Mass of fuel supplied per second [m_f]			+10% -10%
✖Calorific value of fuel is the amount of energy released or produced when 1 kg of fuel burns or any other substance is burnt in the presence of oxygen.ⓘ Calorific value of fuel [CV]			+10% -10%

✖Brake Thermal Efficiency (in %) is defined as the brake power of a heat engine as a function of the thermal input from the fuel.ⓘ Brake Thermal Efficiency given Brake Power [η_bth]

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Formula

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Brake Thermal Efficiency given Brake Power

Formula

`"η"_{"bth"} = ("BP"/("m"_{"f"}*"CV"))*100`

Example

`"0.035625"=("0.008kW"/("0.14kg/s"*"160.400kJ/kg"))*100`

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Brake Thermal Efficiency given Brake Power Solution

STEP 0: Pre-Calculation Summary

Formula Used

Brake Thermal Efficiency = (Brake Power/(Mass of fuel supplied per second*Calorific value of fuel))*100
η_bth = (BP/(m_f*CV))*100
This formula uses 4 Variables

Variables Used

Brake Thermal Efficiency - Brake Thermal Efficiency (in %) is defined as the brake power of a heat engine as a function of the thermal input from the fuel.
Brake Power - (Measured in Watt) - Brake Power is the power available at the crankshaft.
Mass of fuel supplied per second - (Measured in Kilogram per Second) - Mass of fuel supplied per second is the amount of the mass of the fuel that is supplied per second to an engine or to a system.
Calorific value of fuel - (Measured in Joule per Kilogram) - Calorific value of fuel is the amount of energy released or produced when 1 kg of fuel burns or any other substance is burnt in the presence of oxygen.

STEP 1: Convert Input(s) to Base Unit

Brake Power: 0.008 Kilowatt --> 8 Watt (Check conversion here)
Mass of fuel supplied per second: 0.14 Kilogram per Second --> 0.14 Kilogram per Second No Conversion Required
Calorific value of fuel: 160.4 Kilojoule per Kilogram --> 160400 Joule per Kilogram (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η_bth = (BP/(m_f*CV))*100 --> (8/(0.14*160400))*100

Evaluating ... ...

η_bth = 0.0356252226576416

STEP 3: Convert Result to Output's Unit

0.0356252226576416 --> No Conversion Required

FINAL ANSWER

0.0356252226576416 ≈ 0.035625 <-- Brake Thermal Efficiency

(Calculation completed in 00.004 seconds)

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Created by Aditya Prakash Gautam

Indian Institute of Technology (IIT (ISM) ), Dhanbad, Jharkhand

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Brake Thermal Efficiency given Brake Power Formula

Brake Thermal Efficiency = (Brake Power/(Mass of fuel supplied per second*Calorific value of fuel))*100
η_bth = (BP/(m_f*CV))*100

What is Brake Thermal Efficiency ?

Brake thermal efficiency is the ratio of brake power output to heat input (Fuel power). Brake Thermal Efficiency is defined as break power of a heat engine as a function of the thermal input from the fuel.

Mathematically:

η= (Brake power)/(Fuel power)

How to Calculate Brake Thermal Efficiency given Brake Power?

Brake Thermal Efficiency given Brake Power calculator uses Brake Thermal Efficiency = (Brake Power/(Mass of fuel supplied per second*Calorific value of fuel))*100 to calculate the Brake Thermal Efficiency, The Brake Thermal Efficiency given Brake Power formula is defined as the ratio of brake power and product of mass of fuel supplied per second and calorific value of the fuel. Brake Thermal Efficiency is denoted by η_bth symbol.

How to calculate Brake Thermal Efficiency given Brake Power using this online calculator? To use this online calculator for Brake Thermal Efficiency given Brake Power, enter Brake Power (BP), Mass of fuel supplied per second (m_f) & Calorific value of fuel (CV) and hit the calculate button. Here is how the Brake Thermal Efficiency given Brake Power calculation can be explained with given input values -> 0.035625 = (8/(0.14*160400))*100.

FAQ

What is Brake Thermal Efficiency given Brake Power?

The Brake Thermal Efficiency given Brake Power formula is defined as the ratio of brake power and product of mass of fuel supplied per second and calorific value of the fuel and is represented as η_bth = (BP/(m_f*CV))*100 or Brake Thermal Efficiency = (Brake Power/(Mass of fuel supplied per second*Calorific value of fuel))*100. Brake Power is the power available at the crankshaft, Mass of fuel supplied per second is the amount of the mass of the fuel that is supplied per second to an engine or to a system & Calorific value of fuel is the amount of energy released or produced when 1 kg of fuel burns or any other substance is burnt in the presence of oxygen.

How to calculate Brake Thermal Efficiency given Brake Power?

The Brake Thermal Efficiency given Brake Power formula is defined as the ratio of brake power and product of mass of fuel supplied per second and calorific value of the fuel is calculated using Brake Thermal Efficiency = (Brake Power/(Mass of fuel supplied per second*Calorific value of fuel))*100. To calculate Brake Thermal Efficiency given Brake Power, you need Brake Power (BP), Mass of fuel supplied per second (m_f) & Calorific value of fuel (CV). With our tool, you need to enter the respective value for Brake Power, Mass of fuel supplied per second & Calorific value of fuel 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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