Thermal Efficiency of Propeller Engines Calculator

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Jet Propulsion

Components of Gas Turbine

Rocket Propulsion

Thermodynamics and Governing Equations

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Turboprops

Performance Parameters

Turbofans

Turbojets

Turbomachinery Equations

✖Break power is power developed at the output shaft.ⓘ Break Power [BP]			+10% -10%
✖Fuel Flow Rate is the fuel mass flow rate.ⓘ Fuel Flow Rate [m_f]			+10% -10%
✖Fuel Calorific Value denotes the amount of heat energy released per unit mass of fuel upon complete combustion.ⓘ Fuel Calorific Value [Q]			+10% -10%

✖Thermal Efficiency signifies the ratio of the work output of a turboprop engine to the heat input from fuel.ⓘ Thermal Efficiency of Propeller Engines [η_th]

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Formula

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Thermal Efficiency of Propeller Engines

Formula

`"η"_{"th"} = "BP"/("m"_{"f"}*"Q")`

Example

`"0.057458"="125kW"/("0.05kg/s"*"43510kJ/kg")`

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Thermal Efficiency of Propeller Engines Solution

STEP 0: Pre-Calculation Summary

Formula Used

Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value)
η_th = BP/(m_f*Q)
This formula uses 4 Variables

Variables Used

Thermal Efficiency - Thermal Efficiency signifies the ratio of the work output of a turboprop engine to the heat input from fuel.
Break Power - (Measured in Watt) - Break power is power developed at the output shaft.
Fuel Flow Rate - (Measured in Kilogram per Second) - Fuel Flow Rate is the fuel mass flow rate.
Fuel Calorific Value - (Measured in Joule per Kilogram) - Fuel Calorific Value denotes the amount of heat energy released per unit mass of fuel upon complete combustion.

STEP 1: Convert Input(s) to Base Unit

Break Power: 125 Kilowatt --> 125000 Watt (Check conversion here)
Fuel Flow Rate: 0.05 Kilogram per Second --> 0.05 Kilogram per Second No Conversion Required
Fuel Calorific Value: 43510 Kilojoule per Kilogram --> 43510000 Joule per Kilogram (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

η_th = BP/(m_f*Q) --> 125000/(0.05*43510000)

Evaluating ... ...

η_th = 0.0574580556193978

STEP 3: Convert Result to Output's Unit

0.0574580556193978 --> No Conversion Required

FINAL ANSWER

0.0574580556193978 ≈ 0.057458 <-- Thermal Efficiency

(Calculation completed in 00.004 seconds)

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Created by Chilvera Bhanu Teja

Institute of Aeronautical Engineering (IARE), Hyderabad

Chilvera Bhanu Teja has created this Calculator and 300+ more calculators!

Verified by Sagar S Kulkarni

Dayananda Sagar College of Engineering (DSCE), Bengaluru

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

< 4 Turboprops Calculators

Thermal Efficiency of Propeller Engines

Go Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value)

Propeller efficiency given thrust

Go Propeller Efficiency = (Propeller Thrust*Flight Speed)/Shaft Power

Propeller Efficiency

Go Propeller Efficiency = Thrust Power/Shaft Power

Total thrust given nozzle thrust and propeller thrust

Go Total Thrust = Nozzle Thrust+Propeller Thrust

Thermal Efficiency of Propeller Engines Formula

Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value)
η_th = BP/(m_f*Q)

What is thermal efficiency?

Thermal efficiency is a dimensionless performance measure of a device that uses thermal energy, such as an internal combustion engine, a steam turbine or a steam engine, a boiler, furnace.

How to Calculate Thermal Efficiency of Propeller Engines?

Thermal Efficiency of Propeller Engines calculator uses Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value) to calculate the Thermal Efficiency, The Thermal efficiency of propeller engines formula is defined as the ratio of break power to the product of fuel flow rate and calorific value of fuel. Thermal Efficiency is denoted by η_th symbol.

How to calculate Thermal Efficiency of Propeller Engines using this online calculator? To use this online calculator for Thermal Efficiency of Propeller Engines, enter Break Power (BP), Fuel Flow Rate (m_f) & Fuel Calorific Value (Q) and hit the calculate button. Here is how the Thermal Efficiency of Propeller Engines calculation can be explained with given input values -> 0.002394 = 125000/(fuel_flow_rate*43510000).

FAQ

What is Thermal Efficiency of Propeller Engines?

The Thermal efficiency of propeller engines formula is defined as the ratio of break power to the product of fuel flow rate and calorific value of fuel and is represented as η_th = BP/(m_f*Q) or Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value). Break power is power developed at the output shaft, Fuel Flow Rate is the fuel mass flow rate & Fuel Calorific Value denotes the amount of heat energy released per unit mass of fuel upon complete combustion.

How to calculate Thermal Efficiency of Propeller Engines?

The Thermal efficiency of propeller engines formula is defined as the ratio of break power to the product of fuel flow rate and calorific value of fuel is calculated using Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value). To calculate Thermal Efficiency of Propeller Engines, you need Break Power (BP), Fuel Flow Rate (m_f) & Fuel Calorific Value (Q). With our tool, you need to enter the respective value for Break Power, Fuel Flow Rate & Fuel Calorific Value 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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