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

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Length 3 is the length of the third body/object/section. Check FAQs

L 3 = k 3 \cdot A w3 \cdot (\frac{T i3 - T o3}{Q l3} - \frac{L 1}{k 1 \cdot A w3} - \frac{L 2}{k 2 \cdot A w3})

L₃ - Length 3?k₃ - Thermal Conductivity 3?A_w3 - Area of 3 Layer Wall?T_i3 - Inner Surface Temperature 3 Layer Wall?T_o3 - Outer Surface Temperature 3 Layer?Q_l3 - Heat Flow Rate 3 Layer?L₁ - Length 1?k₁ - Thermal Conductivity 1?L₂ - Length 2?k₂ - Thermal Conductivity 2?

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

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Here is how the Length of 3rd Layer of Composite Wall in Conduction through Walls equation looks like with Values.

Here is how the Length of 3rd Layer of Composite Wall in Conduction through Walls equation looks like with Units.

Here is how the Length of 3rd Layer of Composite Wall in Conduction through Walls equation looks like.

6 = 4 \cdot 1383.3333 \cdot (\frac{300.75 - 300}{150} - \frac{2}{1.6 \cdot 1383.3333} - \frac{5}{1.2 \cdot 1383.3333})

6m = 4W/(m*K) \cdot 1383.3333m² \cdot (\frac{300.75K - 300K}{150W} - \frac{2m}{1.6W/(m*K) \cdot 1383.3333m²} - \frac{5m}{1.2W/(m*K) \cdot 1383.3333m²})

6 = 4 \cdot 1383.3333 \cdot (\frac{300.75 - 300}{150} - \frac{2}{1.6 \cdot 1383.3333} - \frac{5}{1.2 \cdot 1383.3333})

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

Follow our step by step solution on how to calculate Length of 3rd Layer of Composite Wall in Conduction through Walls?

FIRST Step Consider the formula

L 3 = k 3 \cdot A w3 \cdot (\frac{T i3 - T o3}{Q l3} - \frac{L 1}{k 1 \cdot A w3} - \frac{L 2}{k 2 \cdot A w3})

Next Step Substitute values of Variables

∴

L 3 = 4W/(m*K) \cdot 1383.3333m² \cdot (\frac{300.75K - 300K}{150W} - \frac{2m}{1.6W/(m*K) \cdot 1383.3333m²} - \frac{5m}{1.2W/(m*K) \cdot 1383.3333m²})

Next Step Prepare to Evaluate

∴

L 3 = 4 \cdot 1383.3333 \cdot (\frac{300.75 - 300}{150} - \frac{2}{1.6 \cdot 1383.3333} - \frac{5}{1.2 \cdot 1383.3333})

Next Step Evaluate

∴

L 3 = 5.99999993333333m

LAST Step Rounding Answer

∴

L 3 = 6m

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

Variables

Length 3

Length 3 is the length of the third body/object/section.

Symbol: L₃

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Length 3

Thermal Conductivity 3

Thermal Conductivity 3 is the thermal conductivity of the third body.

Symbol: k₃

Measurement: Thermal ConductivityUnit: W/(m*K)

Note: Value should be greater than 0.

Formulas to find Thermal Conductivity 3

Area of 3 Layer Wall

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.

Symbol: A_w3

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Area of 3 Layer Wall

Inner Surface Temperature 3 Layer Wall

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).

Symbol: T_i3

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Inner Surface Temperature 3 Layer Wall

Outer Surface Temperature 3 Layer

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.

Symbol: T_o3

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Outer Surface Temperature 3 Layer

Heat Flow Rate 3 Layer

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.

Symbol: Q_l3

Measurement: PowerUnit: W

Note: Value can be positive or negative.

Formulas to find Heat Flow Rate 3 Layer

Length 1

Length 1 is the length of the first body.

Symbol: L₁

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Length 1

Thermal Conductivity 1

Thermal Conductivity 1 is the thermal conductivity of the first body.

Symbol: k₁

Measurement: Thermal ConductivityUnit: W/(m*K)

Note: Value should be greater than 0.

Formulas to find Thermal Conductivity 1

Length 2

Length 2 is the length of the second body/object/section.

Symbol: L₂

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Length 2

Thermal Conductivity 2

Thermal Conductivity 2 is the thermal conductivity of the second body.

Symbol: k₂

Measurement: Thermal ConductivityUnit: W/(m*K)

Note: Value should be greater than 0.

Formulas to find Thermal Conductivity 2

Other formulas in 3 Layers category

Go Thermal Resistance of Composite Wall with 3 Layers in Series

R th3 = \frac{L 1}{k 1 \cdot A w3} + \frac{L 2}{k 2 \cdot A w3} + \frac{L 3}{k 3 \cdot A w3}

Go Outer Surface Temperature of Composite Wall of 3 Layers for Conduction

T o3 = T i3 - Q l3 \cdot (\frac{L 1}{k 1 \cdot A w3} + \frac{L 2}{k 2 \cdot A w3} + \frac{L 3}{k 3 \cdot A w3})

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

Length of 3rd Layer of Composite Wall in Conduction through Walls evaluator 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 evaluate 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 evaluate Length of 3rd Layer of Composite Wall in Conduction through Walls using this online evaluator? To use this online evaluator 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.

FAQs on Length of 3rd Layer of Composite Wall in Conduction through Walls

What is the formula to find Length of 3rd Layer of Composite Wall in Conduction through Walls?

The formula of Length of 3rd Layer of Composite Wall in Conduction through Walls is expressed as 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)). Here is an example- -3682.88888 = 4*1383.33333*((300.75-300)/150-2/(1.6*1383.33333)-5/(1.2*1383.33333)).

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

With 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) we can find Length of 3rd Layer of Composite Wall in Conduction through Walls using the formula - 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)).

Can the Length of 3rd Layer of Composite Wall in Conduction through Walls be negative?

No, the Length of 3rd Layer of Composite Wall in Conduction through Walls, measured in Length cannot be negative.

Which unit is used to measure Length of 3rd Layer of Composite Wall in Conduction through Walls?

Length of 3rd Layer of Composite Wall in Conduction through Walls is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Length of 3rd Layer of Composite Wall in Conduction through Walls can be measured.

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

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

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

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

Other formulas in 3 Layers category

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

FAQs on Length of 3rd Layer of Composite Wall in Conduction through Walls

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