Critical Pressure Formula:
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Definition: This calculator determines the critical pressure of a real gas using the Wohl equation with parameter b.
Purpose: Critical pressure is essential for understanding phase behavior and designing processes involving real gases.
The calculator uses the formula:
Where:
Explanation: The formula relates critical pressure to critical temperature and the Wohl parameter b.
Details: Critical pressure is crucial for phase equilibrium calculations, process design, and understanding gas behavior under extreme conditions.
Tips: Enter the critical temperature in Kelvin and Wohl parameter b. Both values must be positive.
Q1: What is the Wohl equation?
A: The Wohl equation is a cubic equation of state used to model the behavior of real gases.
Q2: How do I determine Wohl parameter b?
A: Parameter b is typically determined experimentally or from critical property data.
Q3: What units does this calculator use?
A: Temperature must be in Kelvin, and the result is in Pascals.
Q4: Can this be used for any gas?
A: Yes, as long as you have the correct Wohl parameter for the specific gas.
Q5: What's the significance of the 15 in the denominator?
A: This is a constant in the Wohl equation relating critical properties to the parameters.