DWSIM-3.4/C2/Introduction-to-Flowsheeting/English

Visual Cue	Narration
Slide 1 Opening Slide	Welcome to the spoken tutorial on Introduction to Flowsheeting in DWSIM
Slide 2 Learning Objectives	In this tutorial, We will simulate a mixer Follow it up with a flash separator Learn how to give a two phase feed
Slide 3 System Requirements	To record this tutorial, I am using DWSIM 3.4.
Slide 4 Prerequisites	To practice this tutorial, you should have an exposure to DWSIM. The prerequisite tutorials are mentioned on our website, spoken hyphen tutorial dot org.
Blank DWSIM window, already made to the required size	Let me open DWSIM. I have already opened a file flow-begin with two material streams.
Select Raoult’s law and CGS System	I have selected Raoult’s law and the CGS system. I went through file menu and the open option to get this. Let me close this. This file is available at our spoken tutorial website. You may download this and use it. Or you can manually enter the required information. You can see two streams Inlet1 and Inlet2 in the flowsheet canvas.
Slide 5	The next slide summarises the contents of this file. When we mix these streams, we get equimolar composition. We have chosen these values to easily verify the calculations of DWSIM.
	Let us go back to DWSIM.
Select Inlet 1	We will now modify the streams, so as to have vapor in them. Select Inlet 1.
Click on Specification	At the top of the Properties tab, locate Specification. Click on it.
Press down arrow and click Pressure and Vapor Fraction	Press the down arrow and choose Pressure and Vapor Fraction.
Scroll down and Enter 1	Scroll down and locate Molar Fraction Vapor Phase. Enter 1 as its value. That is, the entire stream is a vapor.
Select Inlet2	In a similar way, make Inlet2 to have 50% vapor fraction.
Click and drag Mixer to flowsheet	Now let us insert a mixer to the flowsheet. Locate the Mixer from the object palette. It is the third entry. Click and drag it to the flowsheet.
Click Appearance tab	Let us change the name of the mixer now. Click on the Appearance tab.
Type Mixer	Delete the default name and enter Mixer.
Click and drag Material Stream to the flowsheet	Now let us insert an output stream for the mixer. Click on Material Stream and drag it to the flowsheet. We will close the automatic pop up, and not enter anything. Because, all output streams should be left unspecified.
Type mixer-out	We will change the name of this stream to mixer-out.
Click Mixer	Let me connect the streams to the mixer. Let me click the mixer once.
Click Inlet Stream 1	Properties show up in the Selected Object window. You can see that the mixer has up to 6 inlet streams. Let us click on Inlet Stream 1.
Choose Inlet1	A down arrow appears, indicating a menu. Click this arrow. vapor Choose Inlet1.
Click Inlet Stream 2 and Choose Inlet2	Similarly, connect Inlet2 at Inlet Stream 2.
Click Connected to Outlet and choose mixer-out	Locate the outlet port, mentioned as Connected to Outlet here. Click it and choose mixer-out.
	We can move the streams to make them better aligned.
Hover mouse at Calculator	The mixer is red, as it is not calculated yet. To the right of the configure simulation tab is calculator. It has several options.
Click on Play button	The first one is the play button, to activate the solver. Press it.
Click on Recalculate button	Two buttons to the right of this is for Recalculate action. Click this button. The mixer has become blue now.It means that the calculations are completed.
Click on mixer-out and hover mouse at Properties	Now click on mixer-out stream. We can see its calculated values in the Properties tab. We can verify that its composition is as expected. Double click Mixture It has equimolar composition.
Click and drag Separator Vessel to the flowsheet	Now let us insert a flash separator. Let us scroll down the Object Palette. Let us scroll down and locate the Separator Vessel. It can be used to simulate VLE, LLE and VLLE systems. Click and drag it to the flowsheet.
Click and drag Material Stream to the flowsheet	We need to connect two output streams to the separator. Let us drag the material stream. We will leave it unspecified, as its properties are to be calculated.
Type Vapour	We will name it as Vapour.
Type Liquid	Similarly, create another stream and name it as Liquid.
Connect mixer-out stream to Inlet stream1 port	Let us now connect the streams to the Separator. In the first input port, we will connect mixer-out. We can connect a total of five more input streams. The separator mixes all the streams and separates. As a matter of fact, a separate mixer is not really required. It also has a port to connect an energy stream. As we can see. These ideas will be taken up in the assignment section.
Connect Vapour stream to Vapour outlet port	Let us connect the Vapour stream to the Vapour outlet port.
Connect Liquid stream to Liquid outlet port	Similarly, connect the Liquid stream. Once again, we can move the items for better alignment.
Hover the mouse at Recalculate	Notice that DWSIM completed the calculations automatically. You are free to press the Recalculate button also. In fact you should do this whenever you are in doubt.
	We now check whether the vapor and liquid are split properly in the separator.
Click Vapor stream and hover mouse at Molar compoition	Let us look at the vapor phase mole fractions of the stream Vapour. The mole fraction of Benzene is 0.54.
Click mixer-out and hover mouse at Molar compoition	Let us check whether this is in agreement with what mixer-out has. You can see that DWSIM automatically displays vapor value benzene mole fraction is 0.54. This is an indirect evidence that the Separator is working as expected. We can do a check on the working of the Mixer also. You can see the Mixture composition is equimolar, as expected.
	We will postpone a few other checks to the Assignment Section.
Click on File and Click Save As	Let us save this file now using the save as option.
Type flow-end	I will save it as flow-end. I suggest that you keep saving your work frequently.
	Let me summarise.
Summary slide	We defined a simple flowsheet. Explained how to create mixed feed. Introduced mixer and separator. Showed how to connect them. Explained how to simulate.
	Let me give some assignments.
Assignment 1 slide	The assignment in this slide has to do with mass balances. I use blue colour to indicate streams and equipment.
	Let us go to the next Assignment.
Assignment 2 slide	You have to verify mole fractions as mentioned in this slide.
Assignment 3 slide	The third assignment has to do with the Separator. Recall that we mentioned that it could be used to mix streams. Remove the mixer and mixer-out and try it out.
Assignment 4 slide	In the next assignment, you will do the separation at a higher temperature.
Click Separator	Click on Separator.Lets scroll up.
Click on Override separation temperature	Let us change Override separation temperature to true.
Type 100	In the resulting field, change the value to 100.
Click and drag Energy Stream to the flowsheet	Bring Energy stream from Object Palette to the Flowsheet. This is a new stream. Connect this stream to the Energy Stream of the Separator that I showed earlier. Simulate and analyse your results. This is summarised in the slide.
About the Spoken Tutorial project slide	This video summarises the Spoken Tutorial project. If you do not have good bandwidth, you may download and watch it.
Spoken Tutorial workshops slide	We conduct workshops using Spoken Tutorials. Give certificates. Please contact us.
Forum slide	Do you have questions in THIS Spoken Tutorial? Choose the minute and second where you have the question. Explain your question briefly. Someone from the FOSSEE team will answer them. Please visit this site.
Textbook Companion slide	The FOSSEE team coordinates coding of solved examples of popular books. We give honorarium and certificates for those who do this. For more details, please visit this site.
Lab Migration slide	The FOSSEE team helps migrate commercial simulator labs to DWSIM. We give honorarium and certificates for those who do this. For more details, please visit this site.
Acknowledgement slide	Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
Thanks	Thanks for joining.

Contributors and Content Editors

Nancyvarkey, PoojaMoolya, Pratik kamble