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Thermal Resistance of Wall Formula

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Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Check FAQs

R th = \frac{L}{k \cdot A}

R_th - Thermal Resistance?L - Length?k - Thermal Conductivity?A - Cross-Sectional Area?

Thermal Resistance of Wall Example

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Here is how the Thermal Resistance of Wall equation looks like with Values.

Here is how the Thermal Resistance of Wall equation looks like with Units.

Here is how the Thermal Resistance of Wall equation looks like.

0.0231 = \frac{3}{10 \cdot 13}

0.0231K/W = \frac{3m}{10W/(m*K) \cdot 13m²}

0.0231 = \frac{3}{10 \cdot 13}

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Thermal Resistance of Wall Solution

Follow our step by step solution on how to calculate Thermal Resistance of Wall?

FIRST Step Consider the formula

R th = \frac{L}{k \cdot A}

Next Step Substitute values of Variables

∴

R th = \frac{3m}{10W/(m*K) \cdot 13m²}

Next Step Prepare to Evaluate

∴

R th = \frac{3}{10 \cdot 13}

Next Step Evaluate

∴

R th = 0.0230769230769231K/W

LAST Step Rounding Answer

∴

R th = 0.0231K/W

Thermal Resistance of Wall Formula Elements

Variables

Thermal Resistance

Thermal resistance is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow.

Symbol: R_th

Measurement: Thermal ResistanceUnit: K/W

Note: Value should be greater than 0.

Formulas to find Thermal Resistance

Length

Length is the measurement or extent of something from end to end.

Symbol: L

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Length

Thermal Conductivity

Thermal Conductivity is rate of heat passes through specified material, expressed as amount of heat flows per unit time through a unit area with a temperature gradient of one degree per unit distance.

Symbol: k

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

Note: Value should be greater than 0.

Formulas to find Thermal Conductivity

Cross-Sectional Area

Cross-Sectional Area is the area of a two-dimensional shape that is obtained when a three-dimensional shape is sliced perpendicular to some specified axis at a point.

Symbol: A

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Cross-Sectional Area

Other formulas in Single Plane Wall category

Go Thickness of Plane Wall for Conduction through Wall

L = \frac{(T i - T o) \cdot k \cdot A w1}{Q}

Go Area of Plane Wall Required for Given Temperature Difference

A w1 = \frac{Q \cdot L}{k \cdot (T i - T o)}

Go Thermal Conductivity of Material Required to Maintain Given Temperature Difference

k = \frac{Q \cdot L}{(T i - T o) \cdot A w1}

Go Outer Surface Temperature of Wall in Conduction through Wall

T o = T i - \frac{Q \cdot L}{k \cdot A w1}

How to Evaluate Thermal Resistance of Wall?

Thermal Resistance of Wall evaluator uses Thermal Resistance = Length/(Thermal Conductivity*Cross-Sectional Area) to evaluate the Thermal Resistance, Thermal Resistance of Wall is a heat property and a measurement of a temperature difference by which a wall resists a heat flow. Thermal resistance is the reciprocal of thermal conductance. Thermal Resistance is denoted by R_th symbol.

How to evaluate Thermal Resistance of Wall using this online evaluator? To use this online evaluator for Thermal Resistance of Wall, enter Length (L), Thermal Conductivity (k) & Cross-Sectional Area (A) and hit the calculate button.

FAQs on Thermal Resistance of Wall

What is the formula to find Thermal Resistance of Wall?

The formula of Thermal Resistance of Wall is expressed as Thermal Resistance = Length/(Thermal Conductivity*Cross-Sectional Area). Here is an example- 0.023077 = 3/(10*13).

How to calculate Thermal Resistance of Wall?

With Length (L), Thermal Conductivity (k) & Cross-Sectional Area (A) we can find Thermal Resistance of Wall using the formula - Thermal Resistance = Length/(Thermal Conductivity*Cross-Sectional Area).

Can the Thermal Resistance of Wall be negative?

No, the Thermal Resistance of Wall, measured in Thermal Resistance cannot be negative.

Which unit is used to measure Thermal Resistance of Wall?

Thermal Resistance of Wall is usually measured using the Kelvin per Watt[K/W] for Thermal Resistance. Degree Fahrenheit hour per Btu (IT)[K/W], Degree Fahrenheit Hour per Btu (th)[K/W], Kelvin per Milliwatt[K/W] are the few other units in which Thermal Resistance of Wall can be measured.

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Thermal Resistance of Wall Formula

Thermal Resistance of Wall Example

Thermal Resistance of Wall Solution

Thermal Resistance of Wall Formula Elements

Other formulas in Single Plane Wall category

How to Evaluate Thermal Resistance of Wall?

FAQs on Thermal Resistance of Wall

Variable Name