Overall heat transfer coefficient of IC engine Calculator

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✖Heat transfer coefficient on gas side is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat from engine side.ⓘ Heat Transfer Coefficient on Gas Side [h_g]			+10% -10%
✖Thickness of Engine Wall is defined as the measure of the distance between the outer and inner side of the engine wall.ⓘ Thickness of Engine Wall [ΔX]			+10% -10%
✖Thermal conductivity of material is defined as a measure of a material’s ability to conduct heat.ⓘ Thermal conductivity of material [K]			+10% -10%
✖Heat Transfer Coefficient on Coolant Side is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat to the coolant side.ⓘ Heat Transfer Coefficient on Coolant Side [h_c]			+10% -10%

✖Overall heat transfer coefficient is the overall convective heat transfer between a fluid medium (a fluid) and the surface (wall) flowed over by the fluid.ⓘ Overall heat transfer coefficient of IC engine [U]

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Formula

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Overall heat transfer coefficient of IC engine

Formula

`"U" = 1/((1/"h"_{"g"})+("ΔX"/"K")+(1/"h"_{"c"}))`

Example

`"45.3668W/m²*K"=1/((1/"500W/m²*°C")+("0.010m"/"235W/(m*°C)")+(1/"50W/m²*°C"))`

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Overall heat transfer coefficient of IC engine Solution

STEP 0: Pre-Calculation Summary

Formula Used

Overall Heat Transfer Coefficient = 1/((1/Heat Transfer Coefficient on Gas Side)+(Thickness of Engine Wall/Thermal conductivity of material)+(1/Heat Transfer Coefficient on Coolant Side))
U = 1/((1/h_g)+(ΔX/K)+(1/h_c))
This formula uses 5 Variables

Variables Used

Overall Heat Transfer Coefficient - (Measured in Watt per Square Meter per Kelvin) - Overall heat transfer coefficient is the overall convective heat transfer between a fluid medium (a fluid) and the surface (wall) flowed over by the fluid.
Heat Transfer Coefficient on Gas Side - (Measured in Watt per Square Meter per Kelvin) - Heat transfer coefficient on gas side is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat from engine side.
Thickness of Engine Wall - (Measured in Meter) - Thickness of Engine Wall is defined as the measure of the distance between the outer and inner side of the engine wall.
Thermal conductivity of material - (Measured in Watt per Meter per K) - Thermal conductivity of material is defined as a measure of a material’s ability to conduct heat.
Heat Transfer Coefficient on Coolant Side - (Measured in Watt per Square Meter per Kelvin) - Heat Transfer Coefficient on Coolant Side is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat to the coolant side.

STEP 1: Convert Input(s) to Base Unit

Heat Transfer Coefficient on Gas Side: 500 Watt per Square Meter per Celcius --> 500 Watt per Square Meter per Kelvin (Check conversion here)
Thickness of Engine Wall: 0.01 Meter --> 0.01 Meter No Conversion Required
Thermal conductivity of material: 235 Watt per Meter per Degree Celsius --> 235 Watt per Meter per K (Check conversion here)
Heat Transfer Coefficient on Coolant Side: 50 Watt per Square Meter per Celcius --> 50 Watt per Square Meter per Kelvin (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

U = 1/((1/h_g)+(ΔX/K)+(1/h_c)) --> 1/((1/500)+(0.01/235)+(1/50))

Evaluating ... ...

U = 45.3667953667954

STEP 3: Convert Result to Output's Unit

45.3667953667954 Watt per Square Meter per Kelvin --> No Conversion Required

FINAL ANSWER

45.3667953667954 ≈ 45.3668 Watt per Square Meter per Kelvin <-- Overall Heat Transfer Coefficient

(Calculation completed in 00.004 seconds)

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Home » Physics » IC Engine » Fundamentals of IC Engine » Overall heat transfer coefficient of IC engine

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Created by Syed Adnan

Ramaiah University of Applied Sciences (RUAS), bangalore

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National Institute Of Technology (NIT), Hamirpur

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< 22 Fundamentals of IC Engine Calculators

Overall heat transfer coefficient of IC engine

Go Overall Heat Transfer Coefficient = 1/((1/Heat Transfer Coefficient on Gas Side)+(Thickness of Engine Wall/Thermal conductivity of material)+(1/Heat Transfer Coefficient on Coolant Side))

Fuel Jet Velocity

Go Fuel jet velocity = Coefficient of Discharge*sqrt(((2*(Fuel injection pressure-Pressure of charge inside the cylinder))/Fuel Density))

Rate of convection heat transfer between engine wall and coolant

Go Rate of Convection Heat Transfer = Convection Heat Transfer Coefficient*Surface Area of Engine Wall*(Engine Wall Surface Temperature-Temperature of Coolant)

Mass of air taken in each cylinder

Go Mass of air taken in each cylinder = (Intake air pressure*(Clearance volume+Displaced volume))/([R]*Intake air temperature)

Heat transfer across engine wall given overall heat transfer coefficient

Go Heat Transfer across Engine Wall = Overall Heat Transfer Coefficient*Surface Area of Engine Wall*(Gas side temperature-Coolant Side Temperature)

Power produced by IC engine given work done by engine

Go Power produced by IC engine = Work done per operating cycle*(Engine speed in rps/Crankshaft revolutions per power stroke)

Engine displacement given number of cylinders

Go Engine Displacement = Engine bore*Engine bore*Stroke Length*0.7854*Number of Cylinders

Rate of cooling of engine

Go Rate of Cooling = Rate of Cooling Constant*(Engine Temperature-Engine surrounding Temperature)

Time taken for engine to cool

Go Time taken to cool Engine = (Engine Temperature-Final Engine Temperature)/Rate of Cooling

Engine rpm

Go Engine RPM = (Speed of vehicle in mph*Gear Ratio of Transmission*336)/Tire Diameter

Kinetic energy stored in flywheel of IC engine

Go Kinetic energy stored in the flywheel = (Flywheel moment of inertia*(Flywheel angular velocity^2))/2

Swept Volume

Go Swept volume = (((pi/4)*Inner Diameter of Cylinder^2)*Stroke Length)

Work done per operating cycle in IC engine

Go Work done per operating cycle = Mean effective pressure in pascals*Displacement volume of piston

Brake output per displacement of piston

Go Brake output per displacement = Brake power per cylinder per stroke/Displaced volume

Engine specific volume

Go Engine specific volume = Displaced volume/Brake power per cylinder per stroke

Brake specific power

Go Brake specific power = Brake power per cylinder per stroke/Area of Piston

Equivalence ratio

Go Equivalence ratio = Actual Air Fuel Ratio/Stoichiometric Air Fuel Ratio

Brake work per cylinder per stroke

Go Brake work per cylinder per stroke = Bmep*Displaced volume

Compression Ratio given Clearance and Swept Volume

Go Compression Ratio = 1+(Swept volume/Clearance volume)

Engine Capacity

Go Engine capacity = Swept volume*Number of Cylinders

Mean piston speed

Go Mean Piston Speed = 2*Stroke Length*Engine Speed

Peak torque of engine

Go Peak Torque of Engine = Engine Displacement*1.25

Overall heat transfer coefficient of IC engine Formula

What is overall heat transfer coefficient of ic engine?

The overall heat transfer coefficient is employed in calculating the rate of heat transfer from one fluid at an average bulk temperature of engine side through a solid surface to a second fluid at an average bulk temperature of coolant side.

How to Calculate Overall heat transfer coefficient of IC engine?

Overall heat transfer coefficient of IC engine calculator uses Overall Heat Transfer Coefficient = 1/((1/Heat Transfer Coefficient on Gas Side)+(Thickness of Engine Wall/Thermal conductivity of material)+(1/Heat Transfer Coefficient on Coolant Side)) to calculate the Overall Heat Transfer Coefficient, The Overall heat transfer coefficient of IC engine formula is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat in the ic engine. Overall Heat Transfer Coefficient is denoted by U symbol.

How to calculate Overall heat transfer coefficient of IC engine using this online calculator? To use this online calculator for Overall heat transfer coefficient of IC engine, enter Heat Transfer Coefficient on Gas Side (h_g), Thickness of Engine Wall (ΔX), Thermal conductivity of material (K) & Heat Transfer Coefficient on Coolant Side (h_c) and hit the calculate button. Here is how the Overall heat transfer coefficient of IC engine calculation can be explained with given input values -> 45.3668 = 1/((1/500)+(0.01/235)+(1/50)).

FAQ

What is Overall heat transfer coefficient of IC engine?

The Overall heat transfer coefficient of IC engine formula is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat in the ic engine and is represented as U = 1/((1/h_g)+(ΔX/K)+(1/h_c)) or Overall Heat Transfer Coefficient = 1/((1/Heat Transfer Coefficient on Gas Side)+(Thickness of Engine Wall/Thermal conductivity of material)+(1/Heat Transfer Coefficient on Coolant Side)). Heat transfer coefficient on gas side is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat from engine side, Thickness of Engine Wall is defined as the measure of the distance between the outer and inner side of the engine wall, Thermal conductivity of material is defined as a measure of a material’s ability to conduct heat & Heat Transfer Coefficient on Coolant Side is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat to the coolant side.

How to calculate Overall heat transfer coefficient of IC engine?

The Overall heat transfer coefficient of IC engine formula is defined as the proportionality constant between the heat flux and the thermodynamic driving force for the flow of heat in the ic engine is calculated using Overall Heat Transfer Coefficient = 1/((1/Heat Transfer Coefficient on Gas Side)+(Thickness of Engine Wall/Thermal conductivity of material)+(1/Heat Transfer Coefficient on Coolant Side)). To calculate Overall heat transfer coefficient of IC engine, you need Heat Transfer Coefficient on Gas Side (h_g), Thickness of Engine Wall (ΔX), Thermal conductivity of material (K) & Heat Transfer Coefficient on Coolant Side (h_c). With our tool, you need to enter the respective value for Heat Transfer Coefficient on Gas Side, Thickness of Engine Wall, Thermal conductivity of material & Heat Transfer Coefficient on Coolant Side 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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