Heat Flow Rate through Composite Wall of 2 Layers in Series Calculator

✖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).ⓘ Inner Surface Temperature 2 layer wall [T_i2]			+10% -10%
✖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.ⓘ Outer Surface Temperature of 2 Layer [T_o2]			+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%
✖Area of 2 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 2 Layer Wall [A_w2]			+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%

✖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.ⓘ Heat Flow Rate through Composite Wall of 2 Layers in Series [Q_l2]

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Heat Flow Rate through Composite Wall of 2 Layers in Series Solution

STEP 0: Pre-Calculation Summary

Formula Used

Heat Flow Rate 2 Layer = (Inner Surface Temperature 2 layer wall-Outer Surface Temperature of 2 Layer)/(Length 1/(Thermal Conductivity 1*Area of 2 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 2 Layer Wall))
Q_l2 = (T_i2-T_o2)/(L₁/(k₁*A_w2)+L₂/(k₂*A_w2))
This formula uses 8 Variables

Variables Used

Heat Flow Rate 2 Layer - (Measured in Watt) - 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.
Inner Surface Temperature 2 layer wall - (Measured in Kelvin) - 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).
Outer Surface Temperature of 2 Layer - (Measured in Kelvin) - 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.
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.
Area of 2 Layer Wall - (Measured in Square Meter) - Area of 2 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.
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

Inner Surface Temperature 2 layer wall: 420.75 Kelvin --> 420.75 Kelvin No Conversion Required
Outer Surface Temperature of 2 Layer: 420 Kelvin --> 420 Kelvin 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
Area of 2 Layer Wall: 866.6667 Square Meter --> 866.6667 Square Meter 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

Q_l2 = (T_i2-T_o2)/(L₁/(k₁*A_w2)+L₂/(k₂*A_w2)) --> (420.75-420)/(2/(1.6*866.6667)+5/(1.2*866.6667))

Evaluating ... ...

Q_l2 = 120.000004615385

STEP 3: Convert Result to Output's Unit

120.000004615385 Watt --> No Conversion Required

FINAL ANSWER

120.000004615385 ≈ 120 Watt <-- Heat Flow Rate 2 Layer

(Calculation completed in 00.007 seconds)

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Home » Physics » Heat and Mass Transfer » Conduction » Conduction in Plane Wall » Mechanical » 2 Layers » Heat Flow Rate through Composite Wall of 2 Layers in Series

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Created by Sai Venkata Phanindra Chary Arendra

Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology (VNRVJIET), Hyderabad

Sai Venkata Phanindra Chary Arendra has created this Calculator and 100+ more calculators!

Verified by Vinay Mishra

Indian Institute for Aeronautical Engineering and Information Technology (IIAEIT), Pune

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< 2 Layers Calculators

Outer Surface Temperature of Composite Wall of 2 Layers for Conduction

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

Thermal Resistance of Composite Wall with 2 Layers in Series

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

Interface Temperature of Composite Wall of 2 Layers given Outer Surface Temperature

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

Interface Temperature of Composite Wall of 2 Layers given Inner Surface Temperature

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

Heat Flow Rate through Composite Wall of 2 Layers in Series Formula

LaTeX Go

What is heat flow rate?

The rate of heat flow 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.

How to Calculate Heat Flow Rate through Composite Wall of 2 Layers in Series?

Heat Flow Rate through Composite Wall of 2 Layers in Series calculator uses Heat Flow Rate 2 Layer = (Inner Surface Temperature 2 layer wall-Outer Surface Temperature of 2 Layer)/(Length 1/(Thermal Conductivity 1*Area of 2 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 2 Layer Wall)) to calculate the Heat Flow Rate 2 Layer, The Heat Flow Rate through Composite Wall of 2 Layers in Series formula is defined as the rate of heat flow through a composite of 2 layers in series when the inner and outer surface temperatures, lengths/thickness of the layers, area and thermal conductivities are known. Heat Flow Rate 2 Layer is denoted by Q_l2 symbol.

How to calculate Heat Flow Rate through Composite Wall of 2 Layers in Series using this online calculator? To use this online calculator for Heat Flow Rate through Composite Wall of 2 Layers in Series, enter Inner Surface Temperature 2 layer wall (T_i2), Outer Surface Temperature of 2 Layer (T_o2), Length 1 (L₁), Thermal Conductivity 1 (k₁), Area of 2 Layer Wall (A_w2), Length 2 (L₂) & Thermal Conductivity 2 (k₂) and hit the calculate button. Here is how the Heat Flow Rate through Composite Wall of 2 Layers in Series calculation can be explained with given input values -> 3320 = (420.75-420)/(2/(1.6*866.6667)+5/(1.2*866.6667)).

FAQ

What is Heat Flow Rate through Composite Wall of 2 Layers in Series?

The Heat Flow Rate through Composite Wall of 2 Layers in Series formula is defined as the rate of heat flow through a composite of 2 layers in series when the inner and outer surface temperatures, lengths/thickness of the layers, area and thermal conductivities are known and is represented as Q_l2 = (T_i2-T_o2)/(L₁/(k₁*A_w2)+L₂/(k₂*A_w2)) or Heat Flow Rate 2 Layer = (Inner Surface Temperature 2 layer wall-Outer Surface Temperature of 2 Layer)/(Length 1/(Thermal Conductivity 1*Area of 2 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 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), 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, Length 1 is the length of the first body, Thermal Conductivity 1 is the thermal conductivity of the first body, Area of 2 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, 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 Heat Flow Rate through Composite Wall of 2 Layers in Series?

The Heat Flow Rate through Composite Wall of 2 Layers in Series formula is defined as the rate of heat flow through a composite of 2 layers in series when the inner and outer surface temperatures, lengths/thickness of the layers, area and thermal conductivities are known is calculated using Heat Flow Rate 2 Layer = (Inner Surface Temperature 2 layer wall-Outer Surface Temperature of 2 Layer)/(Length 1/(Thermal Conductivity 1*Area of 2 Layer Wall)+Length 2/(Thermal Conductivity 2*Area of 2 Layer Wall)). To calculate Heat Flow Rate through Composite Wall of 2 Layers in Series, you need Inner Surface Temperature 2 layer wall (T_i2), Outer Surface Temperature of 2 Layer (T_o2), Length 1 (L₁), Thermal Conductivity 1 (k₁), Area of 2 Layer Wall (A_w2), Length 2 (L₂) & Thermal Conductivity 2 (k₂). With our tool, you need to enter the respective value for Inner Surface Temperature 2 layer wall, Outer Surface Temperature of 2 Layer, Length 1, Thermal Conductivity 1, Area of 2 Layer Wall, 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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