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Pressure and Vapor fraction instead of temperature and pressure
Title
Question
In This tutorial in inlet stream used Flash Specification is Pressure and Vapor fraction instead of temperature and pressure. But temperature and pressure has given in problem. What is reason behind that to used Pressure and Vapor fraction. 

DWSIM Introduction-to-Flowsheeting 02-03 min 10-20 sec 15-03-21, 7:19 p.m. Ajaychaware

Answers:

We want the entire Inlet Stream 1 as vapor. So we select the Flash Spec as Pressure and Vapor Fraction(PVF) and enter the Vapor Phase Mole Fraction as 1.

Similarly for Inlet Stream 2, it has 50% vapor fraction by volume. So we select the Flash Spec as Pressure and Vapor Fraction(PVF) and enter the Vapor Phase Mole Fraction as 0.5.
16-03-21, 3:52 p.m. kaushikdatta

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