Length of 3rd Layer of Composite Wall in Conduction through Walls Calculator

✖Thermal Conductivity 3 is the thermal conductivity of the third body.ⓘ Thermal Conductivity 3 [k₃]			+10% -10%
✖Area of 3 Layer Wall refers to the surface area of the wall, which is the total amount of space that it occupies. It is typically measured in square units such as square feet or square meters.ⓘ Area of 3 Layer Wall [A_w3]			+10% -10%
✖Inner Surface Temperature 3 layer wall is the temperature at the inner surface of the wall (either plane wall or cylindrical wall or spherical wall, etc).ⓘ Inner Surface Temperature 3 Layer Wall [T_i3]			+10% -10%
✖Outer Surface Temperature 3 layer is the temperature at the outer surface of the wall either plane wall or cylindrical wall or spherical wall, etc.ⓘ Outer Surface Temperature 3 Layer [T_o3]			+10% -10%
✖Heat Flow Rate 3 Layer is the amount of heat that is transferred per unit of time in some material, usually measured in watt. Heat is the flow of thermal energy driven by thermal non-equilibrium.ⓘ Heat Flow Rate 3 Layer [Q_l3]			+10% -10%
✖Length 1 is the length of the first body.ⓘ Length 1 [L₁]			+10% -10%
✖Thermal Conductivity 1 is the thermal conductivity of the first body.ⓘ Thermal Conductivity 1 [k₁]			+10% -10%
✖Length 2 is the length of the second body/object/section.ⓘ Length 2 [L₂]			+10% -10%
✖Thermal Conductivity 2 is the thermal conductivity of the second body.ⓘ Thermal Conductivity 2 [k₂]			+10% -10%

✖Length 3 is the length of the third body/object/section.ⓘ Length of 3rd Layer of Composite Wall in Conduction through Walls [L₃]

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Length of 3rd Layer of Composite Wall in Conduction through Walls Solution

STEP 0: Pre-Calculation Summary

Formula Used

Length 3 = Thermal Conductivity 3*Area of 3 Layer Wall*((Inner Surface Temperature 3 Layer Wall-Outer Surface Temperature 3 Layer)/Heat Flow Rate 3 Layer-Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)-Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall))
L₃ = k₃*A_w3*((T_i3-T_o3)/Q_l3-L₁/(k₁*A_w3)-L₂/(k₂*A_w3))
This formula uses 10 Variables

Variables Used

Length 3 - (Measured in Meter) - Length 3 is the length of the third body/object/section.
Thermal Conductivity 3 - (Measured in Watt per Meter per K) - Thermal Conductivity 3 is the thermal conductivity of the third body.
Area of 3 Layer Wall - (Measured in Square Meter) - Area of 3 Layer Wall refers to the surface area of the wall, which is the total amount of space that it occupies. It is typically measured in square units such as square feet or square meters.
Inner Surface Temperature 3 Layer Wall - (Measured in Kelvin) - Inner Surface Temperature 3 layer wall is the temperature at the inner surface of the wall (either plane wall or cylindrical wall or spherical wall, etc).
Outer Surface Temperature 3 Layer - (Measured in Kelvin) - Outer Surface Temperature 3 layer is the temperature at the outer surface of the wall either plane wall or cylindrical wall or spherical wall, etc.
Heat Flow Rate 3 Layer - (Measured in Watt) - Heat Flow Rate 3 Layer is the amount of heat that is transferred per unit of time in some material, usually measured in watt. Heat is the flow of thermal energy driven by thermal non-equilibrium.
Length 1 - (Measured in Meter) - Length 1 is the length of the first body.
Thermal Conductivity 1 - (Measured in Watt per Meter per K) - Thermal Conductivity 1 is the thermal conductivity of the first body.
Length 2 - (Measured in Meter) - Length 2 is the length of the second body/object/section.
Thermal Conductivity 2 - (Measured in Watt per Meter per K) - Thermal Conductivity 2 is the thermal conductivity of the second body.

STEP 1: Convert Input(s) to Base Unit

Thermal Conductivity 3: 4 Watt per Meter per K --> 4 Watt per Meter per K No Conversion Required
Area of 3 Layer Wall: 1383.33333 Square Meter --> 1383.33333 Square Meter No Conversion Required
Inner Surface Temperature 3 Layer Wall: 300.75 Kelvin --> 300.75 Kelvin No Conversion Required
Outer Surface Temperature 3 Layer: 300 Kelvin --> 300 Kelvin No Conversion Required
Heat Flow Rate 3 Layer: 150 Watt --> 150 Watt No Conversion Required
Length 1: 2 Meter --> 2 Meter No Conversion Required
Thermal Conductivity 1: 1.6 Watt per Meter per K --> 1.6 Watt per Meter per K No Conversion Required
Length 2: 5 Meter --> 5 Meter No Conversion Required
Thermal Conductivity 2: 1.2 Watt per Meter per K --> 1.2 Watt per Meter per K No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

L₃ = k₃*A_w3*((T_i3-T_o3)/Q_l3-L₁/(k₁*A_w3)-L₂/(k₂*A_w3)) --> 4*1383.33333*((300.75-300)/150-2/(1.6*1383.33333)-5/(1.2*1383.33333))

Evaluating ... ...

L₃ = 5.99999993333333

STEP 3: Convert Result to Output's Unit

5.99999993333333 Meter --> No Conversion Required

FINAL ANSWER

5.99999993333333 ≈ 6 Meter <-- Length 3

(Calculation completed in 00.020 seconds)

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Home » Physics » Heat and Mass Transfer » Conduction » Conduction in Plane Wall » Mechanical » 3 Layers » Length of 3rd Layer of Composite Wall in Conduction through Walls

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< 3 Layers Calculators

Heat Flow Rate through Composite Wall of 3 Layers in Series

LaTeX Go Heat Flow Rate 3 Layer = (Inner Surface Temperature 3 Layer Wall-Outer Surface Temperature 3 Layer)/(Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall)+Length 3/(Thermal Conductivity 3*Area of 3 Layer Wall))

Outer Surface Temperature of Composite Wall of 3 Layers for Conduction

LaTeX Go Outer Surface Temperature 3 Layer = Inner Surface Temperature 3 Layer Wall-Heat Flow Rate 3 Layer*(Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall)+Length 3/(Thermal Conductivity 3*Area of 3 Layer Wall))

Inner Surface Temperature of Composite Wall of 3 Layers in Series

LaTeX Go Inner Surface Temperature 3 Layer Wall = Outer Surface Temperature 3 Layer+Heat Flow Rate 3 Layer*(Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall)+Length 3/(Thermal Conductivity 3*Area of 3 Layer Wall))

Thermal Resistance of Composite Wall with 3 Layers in Series

LaTeX Go Thermal Resistance of 3 Layer = Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall)+Length 3/(Thermal Conductivity 3*Area of 3 Layer Wall)

Length of 3rd Layer of Composite Wall in Conduction through Walls Formula

LaTeX Go

What is a composite wall?

A wall built of a combination of two or more masonry units of different types of materials that are bonded together, one forming the facing of the wall and the other the backup.

How to Calculate Length of 3rd Layer of Composite Wall in Conduction through Walls?

Length of 3rd Layer of Composite Wall in Conduction through Walls calculator uses Length 3 = Thermal Conductivity 3*Area of 3 Layer Wall*((Inner Surface Temperature 3 Layer Wall-Outer Surface Temperature 3 Layer)/Heat Flow Rate 3 Layer-Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)-Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall)) to calculate the Length 3, The Length of 3rd Layer of Composite Wall in Conduction through Walls formula is defined as the length/thickness of the 3rd layer of the 3 layered composite walls required to maintain a given temperature difference for a given heat flow rate, length/thickness of the first two layers, area, and thermal conductivities. Length 3 is denoted by L₃ symbol.

How to calculate Length of 3rd Layer of Composite Wall in Conduction through Walls using this online calculator? To use this online calculator for Length of 3rd Layer of Composite Wall in Conduction through Walls, enter Thermal Conductivity 3 (k₃), Area of 3 Layer Wall (A_w3), Inner Surface Temperature 3 Layer Wall (T_i3), Outer Surface Temperature 3 Layer (T_o3), Heat Flow Rate 3 Layer (Q_l3), Length 1 (L₁), Thermal Conductivity 1 (k₁), Length 2 (L₂) & Thermal Conductivity 2 (k₂) and hit the calculate button. Here is how the Length of 3rd Layer of Composite Wall in Conduction through Walls calculation can be explained with given input values -> -3682.88888 = 4*1383.33333*((300.75-300)/150-2/(1.6*1383.33333)-5/(1.2*1383.33333)).

FAQ

What is Length of 3rd Layer of Composite Wall in Conduction through Walls?

The Length of 3rd Layer of Composite Wall in Conduction through Walls formula is defined as the length/thickness of the 3rd layer of the 3 layered composite walls required to maintain a given temperature difference for a given heat flow rate, length/thickness of the first two layers, area, and thermal conductivities and is represented as L₃ = k₃*A_w3*((T_i3-T_o3)/Q_l3-L₁/(k₁*A_w3)-L₂/(k₂*A_w3)) or Length 3 = Thermal Conductivity 3*Area of 3 Layer Wall*((Inner Surface Temperature 3 Layer Wall-Outer Surface Temperature 3 Layer)/Heat Flow Rate 3 Layer-Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)-Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall)). Thermal Conductivity 3 is the thermal conductivity of the third body, Area of 3 Layer Wall refers to the surface area of the wall, which is the total amount of space that it occupies. It is typically measured in square units such as square feet or square meters, Inner Surface Temperature 3 layer wall is the temperature at the inner surface of the wall (either plane wall or cylindrical wall or spherical wall, etc), Outer Surface Temperature 3 layer is the temperature at the outer surface of the wall either plane wall or cylindrical wall or spherical wall, etc, Heat Flow Rate 3 Layer is the amount of heat that is transferred per unit of time in some material, usually measured in watt. Heat is the flow of thermal energy driven by thermal non-equilibrium, Length 1 is the length of the first body, Thermal Conductivity 1 is the thermal conductivity of the first body, Length 2 is the length of the second body/object/section & Thermal Conductivity 2 is the thermal conductivity of the second body.

How to calculate Length of 3rd Layer of Composite Wall in Conduction through Walls?

The Length of 3rd Layer of Composite Wall in Conduction through Walls formula is defined as the length/thickness of the 3rd layer of the 3 layered composite walls required to maintain a given temperature difference for a given heat flow rate, length/thickness of the first two layers, area, and thermal conductivities is calculated using Length 3 = Thermal Conductivity 3*Area of 3 Layer Wall*((Inner Surface Temperature 3 Layer Wall-Outer Surface Temperature 3 Layer)/Heat Flow Rate 3 Layer-Length 1/(Thermal Conductivity 1*Area of 3 Layer Wall)-Length 2/(Thermal Conductivity 2*Area of 3 Layer Wall)). To calculate Length of 3rd Layer of Composite Wall in Conduction through Walls, you need Thermal Conductivity 3 (k₃), Area of 3 Layer Wall (A_w3), Inner Surface Temperature 3 Layer Wall (T_i3), Outer Surface Temperature 3 Layer (T_o3), Heat Flow Rate 3 Layer (Q_l3), Length 1 (L₁), Thermal Conductivity 1 (k₁), Length 2 (L₂) & Thermal Conductivity 2 (k₂). With our tool, you need to enter the respective value for Thermal Conductivity 3, Area of 3 Layer Wall, Inner Surface Temperature 3 Layer Wall, Outer Surface Temperature 3 Layer, Heat Flow Rate 3 Layer, Length 1, Thermal Conductivity 1, Length 2 & Thermal Conductivity 2 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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