Temperature Formula:
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Definition: This calculator determines the actual temperature of a real gas using the Redlich-Kwong equation of state, given the reduced temperature, Redlich-Kwong parameter 'a', and critical pressure.
Purpose: It helps in thermodynamic calculations for real gases where ideal gas assumptions don't apply.
The calculator uses the formula:
Where:
Explanation: The formula calculates the actual temperature by scaling the reduced temperature with a factor derived from the gas's critical properties.
Details: Accurate temperature determination is crucial for process design, equipment sizing, and safety calculations in chemical engineering applications.
Tips: Enter the reduced temperature (dimensionless), Redlich-Kwong parameter 'a', and critical pressure in Pascals. All values must be > 0.
Q1: What is reduced temperature?
A: Reduced temperature is the ratio of the actual temperature to the critical temperature of the substance (T/Tc).
Q2: How do I obtain the Redlich-Kwong parameter 'a'?
A: Parameter 'a' is typically determined experimentally or from critical property data for the specific gas.
Q3: What units should I use for critical pressure?
A: The calculator expects critical pressure in Pascals (Pa). 1 atm = 101325 Pa.
Q4: Why does the formula use the 2/5 exponent?
A: The exponent comes from the derivation of the Redlich-Kwong equation and the relationship between parameters.
Q5: Can this be used for all gases?
A: The Redlich-Kwong equation works well for many non-polar gases but may need modification for polar substances.