Combustion efficiency Solution

STEP 0: Pre-Calculation Summary
Formula Used
Combustion efficiency = Heat added by combustion per cycle/(Mass of fuel added per cycle*Heating value of the fuel)
ηc = Qin/(mf*QHV)
This formula uses 4 Variables
Variables Used
Combustion efficiency - Combustion efficiency is defined as the actual heat input to the theoretical heat input in the engine cylinder.
Heat added by combustion per cycle - (Measured in Joule per Kilogram) - Heat added by combustion per cycle is defined as the amount of heat energy liberated from the combustion of the fuel in one working cycle.
Mass of fuel added per cycle - Mass of fuel added per cycle is defined as the fuel that gets combustible in one cycle.
Heating value of the fuel - (Measured in Joule per Kilogram) - Heating value of the fuel is defined as the chemical energy per unit mass of the fuel.
STEP 1: Convert Input(s) to Base Unit
Heat added by combustion per cycle: 150 Kilojoule per Kilogram --> 150000 Joule per Kilogram (Check conversion here)
Mass of fuel added per cycle: 0.005 --> No Conversion Required
Heating value of the fuel: 50000 Kilojoule per Kilogram --> 50000000 Joule per Kilogram (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
ηc = Qin/(mf*QHV) --> 150000/(0.005*50000000)
Evaluating ... ...
ηc = 0.6
STEP 3: Convert Result to Output's Unit
0.6 --> No Conversion Required
FINAL ANSWER
0.6 <-- Combustion efficiency
(Calculation completed in 00.016 seconds)

Credits

Created by Syed Adnan
Ramaiah University of Applied Sciences (RUAS), bangalore
Syed Adnan has created this Calculator and 100+ more calculators!
Verified by Kartikay Pandit
National Institute Of Technology (NIT), Hamirpur
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Brake Mean Effective Pressure of 4S Engines given Brake power

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`"P"_{"mb"} = (2*"BP")/("L"*"A"*("N")) `

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`"W" = ("P"*"n"_{"R"})/"N"`

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Go Work done per cycle in ic engine = (Indicated engine power*Crankshaft revolutions per power stroke)/Engine Speed in rpm
Fuel conversion efficiency

Fuel conversion efficiency

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`"η"_{"f"} = "W"/("m"_{"f"}*"Q"_{"HV"})`

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`"0.4"="100kJ"/("0.005"*"50000kJ/kg")`

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LaTeX
Go Fuel conversion efficiency = Work done per cycle in ic engine/(Mass of fuel added per cycle*Heating value of the fuel)
Combustion efficiency

Combustion efficiency

Formula
`"η"_{"c"} = "Q"_{"in"}/("m"_{"f"}*"Q"_{"HV"})`

Example
`"0.6"="150kJ/kg"/("0.005"*"50000kJ/kg")`

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LaTeX
Go Combustion efficiency = Heat added by combustion per cycle/(Mass of fuel added per cycle*Heating value of the fuel)
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Bmep given engine torque

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`"Bmep" = (2*pi*"T"*"N")/"s"_{"p"}`

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Thermal efficiency of IC engine

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`"η"_{"th"} = "W"/"Q"_{"in"}`

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`"0.666667"="100kJ"/"150kJ/kg"`

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LaTeX
Go Thermal efficiency of ic engine = Work done per cycle in ic engine/Heat added by combustion per cycle
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Fuel conversion efficiency given thermal conversion efficiency

Formula
`"η"_{"f"} = "η"_{"c"}*"η"_{"t"}`

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LaTeX
Go Fuel conversion efficiency = Combustion efficiency*Thermal conversion efficiency
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`"HP" = ("T"*"E"_{"rpm"})/5252`

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Go Horsepower of engine = (Engine torque*Engine rpm)/5252

Combustion efficiency Formula

Combustion efficiency = Heat added by combustion per cycle/(Mass of fuel added per cycle*Heating value of the fuel)
ηc = Qin/(mf*QHV)

What is combustion efficiency?

Combustion efficiency is the rate at which an engine converts fuel into energy. Particularly with heavy fuels with high-energy densities — diesel, fuel oil, bunker fuel, etc. The combustion efficiency increases with increased excess air - until the heat loss in the excess air is larger than the heat provided by more efficient combustion.

How to Calculate Combustion efficiency?

Combustion efficiency calculator uses Combustion efficiency = Heat added by combustion per cycle/(Mass of fuel added per cycle*Heating value of the fuel) to calculate the Combustion efficiency, The Combustion efficiency formula is defined as a measure of how effectively the heat content of a fuel is transferred into usable heat. Combustion efficiency is denoted by ηc symbol.

How to calculate Combustion efficiency using this online calculator? To use this online calculator for Combustion efficiency, enter Heat added by combustion per cycle (Qin), Mass of fuel added per cycle (mf) & Heating value of the fuel (QHV) and hit the calculate button. Here is how the Combustion efficiency calculation can be explained with given input values -> 0.6 = 150000/(0.005*50000000).

FAQ

What is Combustion efficiency?
The Combustion efficiency formula is defined as a measure of how effectively the heat content of a fuel is transferred into usable heat and is represented as ηc = Qin/(mf*QHV) or Combustion efficiency = Heat added by combustion per cycle/(Mass of fuel added per cycle*Heating value of the fuel). Heat added by combustion per cycle is defined as the amount of heat energy liberated from the combustion of the fuel in one working cycle, Mass of fuel added per cycle is defined as the fuel that gets combustible in one cycle & Heating value of the fuel is defined as the chemical energy per unit mass of the fuel.
How to calculate Combustion efficiency?
The Combustion efficiency formula is defined as a measure of how effectively the heat content of a fuel is transferred into usable heat is calculated using Combustion efficiency = Heat added by combustion per cycle/(Mass of fuel added per cycle*Heating value of the fuel). To calculate Combustion efficiency, you need Heat added by combustion per cycle (Qin), Mass of fuel added per cycle (mf) & Heating value of the fuel (QHV). With our tool, you need to enter the respective value for Heat added by combustion per cycle, Mass of fuel added per cycle & Heating value of the 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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