Formula Used:
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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.
The calculator uses the formula:
Where:
Explanation: The overall mass transfer coefficient is divided by the fractional resistance offered by the liquid phase to determine the liquid film coefficient.
Details: Accurate calculation of this coefficient is crucial for designing efficient absorption towers, distillation columns, and other mass transfer equipment.
Tips: Enter the overall liquid phase mass transfer coefficient and the fractional resistance offered by the liquid phase (must be between 0 and 1).
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.