Error in Thermophysical Properties
Simulate chemical processes using advanced thermodynamic models
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Hi Daniel,
Please look into the attached DWSIM File and document. It is a VL flash of gas mixture (0.2754 Methane, 0.3129 Ethane, 0.1479 Propane, 0.0570 i-Butane, 0.1168 Nitrogen, 0.0901 n-Pentane). Now, ChemSep column has been used here for flash.
When we look into the results available in the ChemSep window, the liquid thermal conductivity of bottoms is shown as 0.0953402 W/[m.K]. Whereas if we look into the Phase Properties of material stream labelled as Liquid, thermal conductivity is show as -2.3161 W/[m.K]
Peng-Robinson Thermodynamic method has been used here. Attached pdf document is the result reported from ChemSep column.
Last edit: Priyam Nayak 2018-02-02
You've added 'IsoButane' from the CoolProp database. Replace it with 'Isobutane' from the ChemSep one.
Whenever you face this kind of problem, go to the "Compound Property Viewer" and inspect individual compound temperature-dependent properties searching for possibly miscalculated values.