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Thermal Resistance in Convection Heat Transfer 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{1}{A e \cdot h co}

R_th - Thermal Resistance?A_e - Exposed Surface Area?h_co - Coefficient of Convective Heat Transfer?

Thermal Resistance in Convection Heat Transfer Example

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Here is how the Thermal Resistance in Convection Heat Transfer equation looks like with Values.

Here is how the Thermal Resistance in Convection Heat Transfer equation looks like with Units.

Here is how the Thermal Resistance in Convection Heat Transfer equation looks like.

0.0045 = \frac{1}{11.1 \cdot 20}

0.0045K/W = \frac{1}{11.1m² \cdot 20W/m²*K}

0.0045 = \frac{1}{11.1 \cdot 20}

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Thermal Resistance in Convection Heat Transfer Solution

Follow our step by step solution on how to calculate Thermal Resistance in Convection Heat Transfer?

FIRST Step Consider the formula

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

Next Step Substitute values of Variables

∴

R th = \frac{1}{11.1m² \cdot 20W/m²*K}

Next Step Prepare to Evaluate

∴

R th = \frac{1}{11.1 \cdot 20}

Next Step Evaluate

∴

R th = 0.0045045045045045K/W

LAST Step Rounding Answer

∴

R th = 0.0045K/W

Thermal Resistance in Convection Heat Transfer 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

Exposed Surface Area

Exposed Surface Area is defined as the area that is exposed to the heat flow.

Symbol: A_e

Measurement: AreaUnit: m²

Note: Value should be greater than 0.

Formulas to find Exposed Surface Area

Coefficient of Convective Heat Transfer

Coefficient of Convective Heat Transfer may be defined as the amount of heat transmitted for a unit temperature difference between surrounding fluid and unit area of surface in unit time.

Symbol: h_co

Measurement: Heat Transfer CoefficientUnit: W/m²*K

Note: Value can be positive or negative.

Formulas to find Coefficient of Convective Heat Transfer

Other formulas in Boiling 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 Newton's Law of Cooling

q = h t \cdot (T w - T f)

How to Evaluate Thermal Resistance in Convection Heat Transfer?

Thermal Resistance in Convection Heat Transfer evaluator uses Thermal Resistance = 1/(Exposed Surface Area*Coefficient of Convective Heat Transfer) to evaluate the Thermal Resistance, Thermal Resistance in Convection Heat Transfer is a concept used to quantify the opposition to heat flow through a fluid. It is analogous to electrical resistance in a circuit and helps to simplify the analysis of heat transfer problems by treating them as a series of resistances. Thermal Resistance is denoted by R_th symbol.

How to evaluate Thermal Resistance in Convection Heat Transfer using this online evaluator? To use this online evaluator for Thermal Resistance in Convection Heat Transfer, enter Exposed Surface Area (A_e) & Coefficient of Convective Heat Transfer (h_co) and hit the calculate button.

FAQs on Thermal Resistance in Convection Heat Transfer

What is the formula to find Thermal Resistance in Convection Heat Transfer?

The formula of Thermal Resistance in Convection Heat Transfer is expressed as Thermal Resistance = 1/(Exposed Surface Area*Coefficient of Convective Heat Transfer). Here is an example- 0.004505 = 1/(11.1*12.870012).

How to calculate Thermal Resistance in Convection Heat Transfer?

With Exposed Surface Area (A_e) & Coefficient of Convective Heat Transfer (h_co) we can find Thermal Resistance in Convection Heat Transfer using the formula - Thermal Resistance = 1/(Exposed Surface Area*Coefficient of Convective Heat Transfer).

Can the Thermal Resistance in Convection Heat Transfer be negative?

Yes, the Thermal Resistance in Convection Heat Transfer, measured in Thermal Resistance can be negative.

Which unit is used to measure Thermal Resistance in Convection Heat Transfer?

Thermal Resistance in Convection Heat Transfer 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 Convection Heat Transfer can be measured.

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