Thermal Efficiency of Propeller Engines Solution

STEP 0: Pre-Calculation Summary
Formula Used
Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value)
ηth = BP/(mf*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
ηth = BP/(mf*Q) --> 125000/(0.05*43510000)
Evaluating ... ...
ηth = 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
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Verified by Sagar S Kulkarni
Dayananda Sagar College of Engineering (DSCE), Bengaluru
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​ LaTeX ​ Go Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value)
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Thermal Efficiency of Propeller Engines Formula

​LaTeX ​Go
Thermal Efficiency = Break Power/(Fuel Flow Rate*Fuel Calorific Value)
ηth = BP/(mf*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 ηth 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 (mf) & 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 ηth = BP/(mf*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 (mf) & 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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