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Outer Surface Temperature of Composite Wall of 2 Layers for Conduction Formula

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Outer Surface Temperature of 2 layer is the temperature at the outer surface of the wall either plane wall or cylindrical wall or spherical wall, etc. Check FAQs

T o2 = T i2 - Q l2 \cdot (\frac{L 1}{k 1 \cdot A w2} + \frac{L 2}{k 2 \cdot A w2})

T_o2 - Outer Surface Temperature of 2 Layer?T_i2 - Inner Surface Temperature 2 layer wall?Q_l2 - Heat Flow Rate 2 Layer?L₁ - Length 1?k₁ - Thermal Conductivity 1?A_w2 - Area of 2 Layer Wall?L₂ - Length 2?k₂ - Thermal Conductivity 2?

Outer Surface Temperature of Composite Wall of 2 Layers for Conduction Example

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Here is how the Outer Surface Temperature of Composite Wall of 2 Layers for Conduction equation looks like with Values.

Here is how the Outer Surface Temperature of Composite Wall of 2 Layers for Conduction equation looks like with Units.

Here is how the Outer Surface Temperature of Composite Wall of 2 Layers for Conduction equation looks like.

420 = 420.75 - 120 \cdot (\frac{2}{1.6 \cdot 866.6667} + \frac{5}{1.2 \cdot 866.6667})

420K = 420.75K - 120W \cdot (\frac{2m}{1.6W/(m*K) \cdot 866.6667m²} + \frac{5m}{1.2W/(m*K) \cdot 866.6667m²})

420 = 420.75 - 120 \cdot (\frac{2}{1.6 \cdot 866.6667} + \frac{5}{1.2 \cdot 866.6667})

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Outer Surface Temperature of Composite Wall of 2 Layers for Conduction Solution

Follow our step by step solution on how to calculate Outer Surface Temperature of Composite Wall of 2 Layers for Conduction?

FIRST Step Consider the formula

T o2 = T i2 - Q l2 \cdot (\frac{L 1}{k 1 \cdot A w2} + \frac{L 2}{k 2 \cdot A w2})

Next Step Substitute values of Variables

∴

T o2 = 420.75K - 120W \cdot (\frac{2m}{1.6W/(m*K) \cdot 866.6667m²} + \frac{5m}{1.2W/(m*K) \cdot 866.6667m²})

Next Step Prepare to Evaluate

∴

T o2 = 420.75 - 120 \cdot (\frac{2}{1.6 \cdot 866.6667} + \frac{5}{1.2 \cdot 866.6667})

Next Step Evaluate

∴

T o2 = 420.000000028846K

LAST Step Rounding Answer

∴

T o2 = 420K

Outer Surface Temperature of Composite Wall of 2 Layers for Conduction Formula Elements

Variables

Outer Surface Temperature of 2 Layer

Outer Surface Temperature of 2 layer is the temperature at the outer surface of the wall either plane wall or cylindrical wall or spherical wall, etc.

Symbol: T_o2

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Outer Surface Temperature of 2 Layer

Inner Surface Temperature 2 layer wall

Inner Surface Temperature 2 layer wall is the temperature at the inner surface of the wall (either plane wall or cylindrical wall or spherical wall, etc).

Symbol: T_i2

Measurement: TemperatureUnit: K

Note: Value can be positive or negative.

Formulas to find Inner Surface Temperature 2 layer wall

Heat Flow Rate 2 Layer

Heat Flow Rate 2 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_l2

Measurement: PowerUnit: W

Note: Value can be positive or negative.

Formulas to find Heat Flow Rate 2 Layer

Length 1

Length 1 is the length of the first body.

Symbol: L₁

Measurement: LengthUnit: m