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Surface Renewal Rate by Surface Renewal Theory Formula

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Surface Renewal Rate is the fractional rate or frequency of surface renewal. Check FAQs

s = \frac{{k L}^{2}}{D AB}

s - Surface Renewal Rate?k_L - Convective Mass Transfer Coefficient?D_AB - Diffusion Coefficient (DAB)?

Surface Renewal Rate by Surface Renewal Theory Example

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Here is how the Surface Renewal Rate by Surface Renewal Theory equation looks like with Values.

Here is how the Surface Renewal Rate by Surface Renewal Theory equation looks like with Units.

Here is how the Surface Renewal Rate by Surface Renewal Theory equation looks like.

0.0129 = \frac{{0.0095}^{2}}{0.007}

0.01291/s = \frac{{0.0095m/s}^{2}}{0.007m²/s}

0.0129 = \frac{{0.0095}^{2}}{0.007}

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Surface Renewal Rate by Surface Renewal Theory Solution

Follow our step by step solution on how to calculate Surface Renewal Rate by Surface Renewal Theory?

FIRST Step Consider the formula

s = \frac{{k L}^{2}}{D AB}

Next Step Substitute values of Variables

∴

s = \frac{{0.0095m/s}^{2}}{0.007m²/s}

Next Step Prepare to Evaluate

∴

s = \frac{{0.0095}^{2}}{0.007}

Next Step Evaluate

∴

s = 0.01289285714285711/s

LAST Step Rounding Answer

∴

s = 0.01291/s

Surface Renewal Rate by Surface Renewal Theory Formula Elements

Variables

Surface Renewal Rate

Surface Renewal Rate is the fractional rate or frequency of surface renewal.

Symbol: s

Measurement: Time InverseUnit: 1/s

Note: Value should be greater than 0.

Formulas to find Surface Renewal Rate

Convective Mass Transfer Coefficient

Convective Mass Transfer Coefficient is a function of geometry of the system and the velocity and properties of the fluid similar to the heat transfer coefficient.

Symbol: k_L

Measurement: SpeedUnit: m/s

Note: Value can be positive or negative.

Formulas to find Convective Mass Transfer Coefficient

Diffusion Coefficient (DAB)

The Diffusion Coefficient (DAB) is the amount of a particular substance that diffuses across a unit area in 1 second under the influence of a gradient of one unit.

Symbol: D_AB

Measurement: DiffusivityUnit: m²/s

Note: Value should be greater than 0.

Formulas to find Diffusion Coefficient (DAB)

Other formulas in Mass Transfer Theories category

Go Mass Transfer Coefficient by Film Theory

k L = \frac{D AB}{δ}

Go Average Mass Transfer Coefficient by Penetration Theory

k L (Avg) = 2 \cdot \sqrt{\frac{D AB}{π \cdot t c}}

Go Mass Transfer Coefficient by Surface Renewal Theory

k L = \sqrt{D AB \cdot s}

Go Liquid Phase Mass Transfer Coefficient by Two Film Theory

K x = \frac{1}{(\frac{1}{k y \cdot H}) + (\frac{1}{k x})}

How to Evaluate Surface Renewal Rate by Surface Renewal Theory?

Surface Renewal Rate by Surface Renewal Theory evaluator uses Surface Renewal Rate = (Convective Mass Transfer Coefficient^2)/Diffusion Coefficient (DAB) to evaluate the Surface Renewal Rate, The Surface Renewal Rate by Surface Renewal Theory formula is used to calculate the surface renewal rate in mass transfer based on surface renewal theory using diffusivity and mass transfer coefficient. Surface Renewal Rate is denoted by s symbol.

How to evaluate Surface Renewal Rate by Surface Renewal Theory using this online evaluator? To use this online evaluator for Surface Renewal Rate by Surface Renewal Theory, enter Convective Mass Transfer Coefficient (k_L) & Diffusion Coefficient (DAB) (D_AB) and hit the calculate button.

FAQs on Surface Renewal Rate by Surface Renewal Theory

What is the formula to find Surface Renewal Rate by Surface Renewal Theory?

The formula of Surface Renewal Rate by Surface Renewal Theory is expressed as Surface Renewal Rate = (Convective Mass Transfer Coefficient^2)/Diffusion Coefficient (DAB). Here is an example- 0.012893 = (0.0095^2)/0.007.

How to calculate Surface Renewal Rate by Surface Renewal Theory?

With Convective Mass Transfer Coefficient (k_L) & Diffusion Coefficient (DAB) (D_AB) we can find Surface Renewal Rate by Surface Renewal Theory using the formula - Surface Renewal Rate = (Convective Mass Transfer Coefficient^2)/Diffusion Coefficient (DAB).

Can the Surface Renewal Rate by Surface Renewal Theory be negative?

No, the Surface Renewal Rate by Surface Renewal Theory, measured in Time Inverse cannot be negative.

Which unit is used to measure Surface Renewal Rate by Surface Renewal Theory?

Surface Renewal Rate by Surface Renewal Theory is usually measured using the 1 Per Second[1/s] for Time Inverse. 1 Per Minute[1/s], 1 Per Hour[1/s], 1 Per Day[1/s] are the few other units in which Surface Renewal Rate by Surface Renewal Theory can be measured.

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