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Surface convection resistance Formula

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Surface Convection Resistance is the resistance offered by the surface of the material for heat transfer by convection. Check FAQs

R sc = \frac{R i}{Bi}

R_sc - Surface Convection Resistance?R_i - Internal Conduction Resistance?Bi - Biot Number?

Surface convection resistance Example

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Here is how the Surface convection resistance equation looks like with Values.

Here is how the Surface convection resistance equation looks like with Units.

Here is how the Surface convection resistance equation looks like.

5 = \frac{4}{0.8}

5K/W = \frac{4K/W}{0.8}

5 = \frac{4}{0.8}

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Surface convection resistance Solution

Follow our step by step solution on how to calculate Surface convection resistance?

FIRST Step Consider the formula

R sc = \frac{R i}{Bi}

Next Step Substitute values of Variables

∴

R sc = \frac{4K/W}{0.8}

Next Step Prepare to Evaluate

∴

R sc = \frac{4}{0.8}

LAST Step Evaluate

∴

R sc = 5K/W

Surface convection resistance Formula Elements

Variables

Surface Convection Resistance

Surface Convection Resistance is the resistance offered by the surface of the material for heat transfer by convection.

Symbol: R_sc

Measurement: Thermal ResistanceUnit: K/W

Note: Value can be positive or negative.

Formulas to find Surface Convection Resistance

Internal Conduction Resistance

Internal Conduction Resistance is the resistance offered by the body for conduction of heat.

Symbol: R_i

Measurement: Thermal ResistanceUnit: K/W

Note: Value should be greater than 0.

Formulas to find Internal Conduction Resistance

Biot Number

Biot Number is a dimensionless quantity having the ratio of internal conduction resistance to the surface convection resistance.

Symbol: Bi

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Biot Number

Other formulas in Eckert and Biot Number category

Go Internal conduction resistance given biot number

R i = Bi \cdot R sc

Go Eckert Number

Ec = \frac{{V f}^{2}}{c \cdot ΔT}

How to Evaluate Surface convection resistance?

Surface convection resistance evaluator uses Surface Convection Resistance = Internal Conduction Resistance/Biot Number to evaluate the Surface Convection Resistance, The Surface convection resistance formula is defined as the resistance offered by the surface of the material for the heat transfer by convection between fluid and the solid surface. Surface Convection Resistance is denoted by R_sc symbol.

How to evaluate Surface convection resistance using this online evaluator? To use this online evaluator for Surface convection resistance, enter Internal Conduction Resistance (R_i) & Biot Number (Bi) and hit the calculate button.

FAQs on Surface convection resistance

What is the formula to find Surface convection resistance?

The formula of Surface convection resistance is expressed as Surface Convection Resistance = Internal Conduction Resistance/Biot Number. Here is an example- 0.625 = 4/0.8.

How to calculate Surface convection resistance?

With Internal Conduction Resistance (R_i) & Biot Number (Bi) we can find Surface convection resistance using the formula - Surface Convection Resistance = Internal Conduction Resistance/Biot Number.

Can the Surface convection resistance be negative?

Yes, the Surface convection resistance, measured in Thermal Resistance can be negative.

Which unit is used to measure Surface convection resistance?

Surface convection resistance 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 Surface convection resistance can be measured.

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