Molar volume calculations returning 'None' using 'Chemical' object with update to 0.2.10

CalebBell / thermo

Thermodynamics and Phase Equilibrium component of Chemical Engineering Design Library (ChEDL)

MIT License

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Molar volume calculations returning 'None' using 'Chemical' object with update to 0.2.10 #91

Closed njw37 closed 2 years ago

njw37 commented 2 years ago

Calculating the molar volume of a gas at STP using the 'Chemical' object returns 'None' for many fluids when updating to 0.2.10. This in turn causes compressibility calculations to return 'None'. A work around was to manually set the molar volume calculation 'method' to 'CRC_VIRIAL' in the 'VolumeGas' object and use the 'calulate_P' function.