Introduction to Flowsheeting - English

Questions posted on ST Forums:

• Assignment 3

  I've removed the Mixer & Mixer-out and directly connected Inlet1 & Inlet2 to the Separator. But the Molar/Mass Flow rates of Vapour & Liquid Streams are different from the Inlets. Can someone explain if that is how it is supposed to be or if I'm making some mistake?

  09-10M 10-20S chandana.chikkala
  
  
  Answer last updated on: Aug. 20, 2025, 4:57 p.m.

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• Pressure and Vapor fraction instead of temperature and pressure

  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. 

  02-03M 10-20S Ajaychaware
  
  
  Answer last updated on: March 16, 2021, 3:52 p.m.

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• The mass (molar) balance is not tally

  Does anybody knows why there is a slight difference in the molar flow of vapor also liquid? I got vapor mass flow inlet is 150 mol/s and outlet is 149.521 mol/s while liquid mass flow inlet is 50 mol/s and outlet is 50.4786 mol/s. I knew that this must be related to the thermodynamic model. Can someone explain a bit more detail. Thanks! 

  09-10M 0-10S mariaanindita
  
  
  Answer last updated on: Feb. 18, 2021, 1:41 p.m.

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• vapor material stream

  im unable to get vapor mole fraction of benezene as 0.55 instead getting it as 0.5

  08-09M 20-30S VAISHNAVI0207
  
  
  Answer last updated on: Feb. 18, 2021, 1:38 p.m.

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• Cannot locate "Material Stream" object to drag and drop into Flowsheet area

  Where do one find the "Material Stream" object to drag and drop into Flowsheet area?

  05-06M 0-10S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:45 a.m.

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• Getting warning message while opening files in DWSIM

  Why do i get warning message when i open the tutorial code files in DWSIM 4.0 and above version?

  00-01M 40-50S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:34 a.m.

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• Phase Mole Fraction box greyed out

  How do i specify the vapor phase mole fraction for Input 1 as shown in the tutorial? The box to enter the mole fraction is greyed out.

  01-02M 50-60S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:30 a.m.

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• Cannot locate "Mixer" to add to flowsheet

  Where do i find the Mixer to be added to flowsheet?

  02-03M 20-30S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:26 a.m.

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• Cannot locate "Play" button to activate the solver

  Where do i find the play button to activate the solver after flow sheet is completed?

  04-05M 0-10S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:23 a.m.

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• Where to see the calculated values of mixer-out stream?

  Can you please help in locating the output values of mixer-out stream?

  04-05M 20-30S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:15 a.m.

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• Cannot locate "Separator Vessel" to add to flowsheet

  Where do i find the Separator Vessel to be added to flow sheet?

  05-06M 0-10S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:08 a.m.

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• How do one set "Override Separation Temperature" to true and enter its value?

  As shown in the tutorial assignment, where can i set the Override Separation Temperature and enter its value?

  08-09M 40-50S priyamnayak
  
  
  Answer last updated on: Aug. 1, 2019, 2:01 a.m.

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• Overrdide seperation temperature

  Hello Sir/Madam,Can you please brief me about what is override separation temperature in separator and what all parameters gets affected on changing the temperature to 1000C..

  08-09M 30-40S HaareshAugustus
  
  
  Answer last updated on: Feb. 22, 2018, 7:45 p.m.

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