Liquid Phase Mass Transfer Coefficient using Fractional Resistance by Liquid Phase Calculator

Formula Used:

\[ k_x = \frac{K_x}{FR_l} \]

Liquid Phase Mass Transfer Coefficient (Mole per Second Square Meter):

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1. What is Liquid Phase Mass Transfer Coefficient?

Definition: The Liquid Phase Mass Transfer Coefficient accounts for driving force for mass transfer in the liquid film in contact with the Gas Phase.

Purpose: It helps chemical engineers and process designers determine the efficiency of mass transfer between phases in separation processes.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ k_x = \frac{K_x}{FR_l} \]

Where:

\( k_x \) — Liquid Phase Mass Transfer Coefficient (Mole per Second Square Meter)
\( K_x \) — Overall Liquid Phase Mass Transfer Coefficient (Mole per Second Square Meter)
\( FR_l \) — Fractional Resistance Offered by Liquid Phase (dimensionless, between 0 and 1)

Explanation: The overall mass transfer coefficient is divided by the fractional resistance offered by the liquid phase to determine the liquid film coefficient.

3. Importance of Liquid Phase Mass Transfer Coefficient

Details: Accurate calculation of this coefficient is crucial for designing efficient absorption towers, distillation columns, and other mass transfer equipment.

4. Using the Calculator

Tips: Enter the overall liquid phase mass transfer coefficient and the fractional resistance offered by the liquid phase (must be between 0 and 1).

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for fractional resistance?
A: The fractional resistance offered by the liquid phase typically ranges between 0.1 and 0.9, depending on the system.

Q2: How do I determine the overall mass transfer coefficient?
A: The overall coefficient can be determined experimentally or calculated from individual phase coefficients using appropriate correlations.

Q3: What units are used in this calculation?
A: Both coefficients are in Mole per Second Square Meter, while fractional resistance is dimensionless.

Q4: When would this calculation be most useful?
A: This is particularly important when designing gas-liquid contactors where liquid-side resistance dominates the mass transfer process.

Q5: What affects the liquid phase mass transfer coefficient?
A: Factors include liquid properties (viscosity, diffusivity), flow regime, and interfacial area.