Formula Used:
From: | To: |
Definition: The Saturated Fugacity Coefficient of Component 2 is the ratio of the saturated fugacity of component 2 to the saturated pressure of component 2.
Purpose: This calculator determines the fugacity coefficient which accounts for non-ideal behavior of gases at saturation conditions.
The calculator uses the formula:
Where:
Explanation: The formula accounts for deviations from ideal gas behavior using the second virial coefficient.
Details: Accurate fugacity coefficients are essential for phase equilibrium calculations in chemical engineering, particularly for vapor-liquid equilibrium systems.
Tips: Enter the second virial coefficient (B22) in m³, saturated pressure in Pascals, and temperature in Kelvin. All values must be positive.
Q1: What is the physical meaning of the fugacity coefficient?
A: It measures how much a real gas deviates from ideal gas behavior, where φ=1 indicates ideal behavior.
Q2: Where can I find second virial coefficient values?
A: Second virial coefficients are typically found in chemical engineering handbooks or through experimental data.
Q3: What temperature range is this formula valid for?
A: This formula is generally valid for temperatures above the critical temperature of the component.
Q4: Why is the universal gas constant used here?
A: The universal gas constant provides consistent units when working in SI units (m³, Pa, K).
Q5: How does pressure affect the fugacity coefficient?
A: Generally, as pressure increases, the fugacity coefficient deviates more from 1 (more non-ideal behavior).