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CalebBell / thermo

Thermodynamics and Phase Equilibrium component of Chemical Engineering Design Library (ChEDL)
MIT License
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Issues for Zg calculation #139

Closed Great0102 closed 9 months ago

Great0102 commented 9 months ago

If we want to calculate the compressibility factor of the chemical in the gas phase at the current temperature and pressure, Zg，following example is provided in the ducument.

Chemical('sulfur hexafluoride', T=700, P=1E9).Zg 11.4

However, after we calculate using this example, the results is 1.

Chemical('sulfur hexafluoride', T=700, P=1E9).Zg 1

Actually, no matter what we input for the temperature and pressure, the results is always 1.

I also try to use another gas, such as methane, hydrogen, etc., the results is also 1.

Can you help to solve this problem?

CalebBell commented 9 months ago

Hello, Please see the discussion here: https://github.com/CalebBell/chemicals/issues/47 In general I strongly recommend the new flash-based methods.