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Thermal Resistance in Conduction 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 o \cdot A}

R_th - Thermal Resistance?L - Thickness?k_o - Thermal Conductivity of Fin?A - Cross Sectional Area?

Thermal Resistance in Conduction Example

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Here is how the Thermal Resistance in Conduction equation looks like with Values.

Here is how the Thermal Resistance in Conduction equation looks like with Units.

Here is how the Thermal Resistance in Conduction equation looks like.

0.2396 = \frac{100}{10.18 \cdot 41}

0.2396K/W = \frac{100m}{10.18W/(m*K) \cdot 41m²}

0.2396 = \frac{100}{10.18 \cdot 41}

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Thermal Resistance in Conduction Solution

Follow our step by step solution on how to calculate Thermal Resistance in Conduction?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

R th = \frac{100m}{10.18W/(m*K) \cdot 41m²}

Next Step Prepare to Evaluate

∴

R th = \frac{100}{10.18 \cdot 41}

Next Step Evaluate

∴

R th = 0.239589822224352K/W

LAST Step Rounding Answer

∴

R th = 0.2396K/W

Thermal Resistance in Conduction 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 can be positive or negative.

Formulas to find Thermal Resistance

Thickness

The thickness of the body or sample is the distance measured on a path parallel to the heat flow.

Symbol: L

Measurement: LengthUnit: m

Note: Value can be positive or negative.

Formulas to find Thickness

Thermal Conductivity of Fin

Thermal Conductivity of Fin is rate of heat passes through Fin, 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_o

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

Note: Value should be greater than 0.

Formulas to find Thermal Conductivity of Fin

Cross Sectional Area

Cross Sectional Area can be referred as the area perpendicular to the path of heat flow.

Symbol: A

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Cross Sectional Area

Other formulas in Conduction, Convection and Radiation category

Go Heat Exchange by Radiation due to Geometric Arrangement

q = ε \cdot A \cdot [Stefan-BoltZ] \cdot SF \cdot ({T 1}^{4} - {T 2}^{4})

Go Heat Transfer According to Fourier's Law

Q c = - (k \cdot A s \cdot \frac{ΔT}{L})

Go Convective Processes Heat Transfer Coefficient

Q = h t \cdot (T w - T aw)

Go Thermal Resistance in Convection Heat Transfer

R th = \frac{1}{A e \cdot h co}

How to Evaluate Thermal Resistance in Conduction?

Thermal Resistance in Conduction evaluator uses Thermal Resistance = (Thickness)/(Thermal Conductivity of Fin*Cross Sectional Area) to evaluate the Thermal Resistance, The thermal resistance in conduction is a heat property and a measurement of a temperature difference by which an object or material resists a heat flow. Thermal Resistance is denoted by R_th symbol.

How to evaluate Thermal Resistance in Conduction using this online evaluator? To use this online evaluator for Thermal Resistance in Conduction, enter Thickness (L), Thermal Conductivity of Fin (k_o) & Cross Sectional Area (A) and hit the calculate button.

FAQs on Thermal Resistance in Conduction

What is the formula to find Thermal Resistance in Conduction?

The formula of Thermal Resistance in Conduction is expressed as Thermal Resistance = (Thickness)/(Thermal Conductivity of Fin*Cross Sectional Area). Here is an example- 0.23959 = (100)/(10.18*41).

How to calculate Thermal Resistance in Conduction?

With Thickness (L), Thermal Conductivity of Fin (k_o) & Cross Sectional Area (A) we can find Thermal Resistance in Conduction using the formula - Thermal Resistance = (Thickness)/(Thermal Conductivity of Fin*Cross Sectional Area).

Can the Thermal Resistance in Conduction be negative?

Yes, the Thermal Resistance in Conduction, measured in Thermal Resistance can be negative.

Which unit is used to measure Thermal Resistance in Conduction?

Thermal Resistance in Conduction 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 in Conduction can be measured.

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