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DanWBR / dwsim

DWSIM is a Steady-State and Dynamic Sequential Modular Chemical Process Simulator for Windows, Linux and macOS.
https://dwsim.org
GNU General Public License v3.0
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[Bug] The valve model gives an insanely low outlet temperature #293

Closed Geron1mo38 closed 2 years ago

Geron1mo38 commented 2 years ago

The valve model gives me a very low outlet temperature with an inlet stream at 913.5 psig and outlet of 215 psig. If I subsitute a cooler with the same pressure drop and adjust the specified outlet temperature until I get a resulting zero heat duty then the result is much more reasonable ie +1.7 deg F vs -268 deg F.

System contains Nitrogen, CO2, Methane.V2,C3,Ic4,nc4,ic5,nc5,c6,c7,Octane through to trace of Ethylene Glycol and water. I am using Peng Robinson 1978 advances thermo and VLLE.

I am using the Windows 64 bit version.with DWSIM 7.3.3

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DanWBR commented 2 years ago

@Geron1mo38 could you please attach the simulation file?