View source for DWSIM-3.4/C2/Introduction-to-Flowsheeting/English-timed


{|Border=1
|  <center>'''Time'''</center>
|  <center>'''Narration'''</center>

|-
| 00:01
| Welcome to the '''spoken tutorial''' on '''Introduction to Flowsheeting''' in '''DWSIM'''.

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| 00:07
| In this tutorial, We will simulate a '''mixer'''.

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| 00:10
| Follow it up with a '''flash separator'''.

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| 00:12
| Learn how to give a two phase feed.

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| 00:16
| To record this tutorial, I am using '''DWSIM''' 3.4.

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| 00:20
| To practice this tutorial, you should have an exposure to '''DWSIM'''.

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| 00:24
| The prerequisite tutorials are mentioned on our website: '''spoken hyphen tutorial dot org'''.

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| 00:31
| Let me open '''DWSIM'''.

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|00:33  
| I have already opened a file '''flow-begin '''with two '''material streams'''.

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| 00:40
| I have selected '''Raoult’s law''' and the '''CGS system'''.

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|  00:43
| I went through the '''File''' menu and the '''Open''' option to get this. Let me close this.

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| 00:53
| This file is available at our '''spoken tutorial''' website. 

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| 00:56
| You may download this file and use it or you can manually enter the required information.

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| 01:02
| You can see two streams '''Inlet1''' and '''Inlet2''' in the '''flowsheet canvas'''.

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| 01:08
| The next slide summarizes the contents of this file.

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| 01:13
| When we mix these streams, we get '''equimolar composition'''.

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| 01:17
| We have chosen these values to easily verify the calculations of '''DWSIM'''.

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| 01:23
| Let us go back to '''DWSIM'''.

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| 01:25
| We will now modify the streams so as to have vapor in them.

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| 01:31
| Select '''Inlet 1'''.

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| 01:34
| At the top of the '''Properties''' tab, locate '''Specification.''' Click on it.

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| 01:40
| Press the down-arrow and choose '''Pressure and Vapor Fraction.'''

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| 01:46
| Scroll down and locate''' Molar Fraction Vapor Phase.'''

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| 01:53
| Enter '''1''' here, that is, the entire stream is vapor.

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| 02:00
| In a similar way, make '''Inlet2''' to have '''50%  Molar Fraction'''.

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| 02:13
|  Now, let us insert a mixer to the '''flowsheet'''.

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| 02:17
| Locate the '''Mixer''' from the '''Object Palette'''. It is the third entry.

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| 02:22
| Click and drag it to the flowsheet.

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|  02:24
|  Let us change the name of the '''mixer''' now.

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|  02:29
| Click on the '''Appearance''' tab. Delete the default name and enter '''Mixer.'''

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| 02:36
| Now, let us insert an '''output stream''' for the mixer.

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| 02:40
| Click on '''Material Stream '''and drag it to the flowsheet.

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| 02:45
| We will close the automatic pop-up and not enter anything. Because, all output streams should be left unspecified.

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| 02:54 
| We will change the name of this stream to '''mixer-out.'''

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| 03:03
| Let me connect the streams to the '''mixer.'''

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| 03:05
| Let me click the '''mixer''' once.

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| 03:08 
|'''Properties''' show up in the '''Selected Object''' window.

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| 03:12
| You can see that the mixer has up to 6 '''inlet streams'''.

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| 03:19 
| Let us click on '''Inlet Stream 1'''.

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|  03:23
|  A down-arrow appears, indicating a menu.

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| 03:27
| Click this arrow and choose '''Inlet1.'''

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| 03:32
| Similarly, connect '''Inlet2''' at '''Inlet Stream 2.'''

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| 03:37 
| Locate the outlet port, mentioned as '''Connected to Outlet''' here.

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| 03:43
| Click on it and choose''' mixer-out.'''

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| 03:49
| We can move the '''stream'''s to make them better aligned.

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| 03:54 
| The '''mixer''' is red, as it is not calculated yet.

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| 03:58
| To the right of the '''configure simulation''' button is '''Calculator.'''

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| 04:02
| It has several options.

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| 04:03
|  The first one is the '''play''' button, to '''activate''' the solver. Press it.

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| 04:09 
| Two buttons to the right of this are for '''Recalculate '''action. Click this button.

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|  04:17
| The '''mixer''' has become blue now, it means that the calculations are completed.

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|  04:22
|  Now, click on '''mixer-out''' stream.

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|  04:27
| We can see its calculated values in the '''Properties''' tab.

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|  04:31
| We can verify that its composition is as expected. 

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| 04:37
|Double click '''Mixture'''.

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| 04:40
| It has '''equimolar composition'''.

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| 04:43
| Now let us insert a '''flash separator'''.

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| 04:47
| Let us scroll down the '''Object Palette.'''

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|  04:51
| Let us locate the '''Separator Vessel.'''

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|  04:56
| It can be used to simulate '''VLE, LLE''' and '''VLLE''' systems.

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| 05:01
| Click and drag it to the flowsheet.

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| 05:06
| We need to connect two output streams to the separator.

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| 05:10
| Let us drag the '''material stream'''.

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| 05:13
| We will leave it unspecified as its properties are to be calculated.

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| 05:20
| We will name it as '''Vapour'''.

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| 05:27
| Similarly, create another stream and name it as '''Liquid.'''

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| 05:32
| Let us now connect the streams to the '''Separator.'''

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| 05:36
| In the first input port, we will connect '''mixer-out. '''

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| 05:44 
|We can connect a total of five more input streams.

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| 05:47
|The '''separator '''mixes all the streams and separates. As a matter of fact, a separate mixer is not really required.

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| 05:54
|It also has a port to connect an '''energy stream'''

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| 05:59
|as we can see now.

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| 06:02
|These ideas will be taken up in the assignment section.

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| 06:07
| Let us connect the '''Vapour '''stream to the '''Vapour outlet''' port.

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| 06:13
| Similarly, connect the '''Liquid''' stream.

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| 06:21
|Once again, we can move the items for better alignment.

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| 06:26
| Notice that '''DWSIM''' completed the calculations automatically.

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| 06:31
|You are free to press the '''Recalculate''' button also.

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| 06:35
|In fact, you should do this whenever you are in doubt.

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| 06:39
| We now check whether the vapor and liquid are split properly in the separator.

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| 06:45
| Let us look at the vapor phase mole fractions of the stream '''Vapour.'''

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| 06:52
|The mole fraction of '''Benzene''' is '''0.54'''.

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| 06:56
| Let us check whether this is in agreement with what '''mixer-out''' has.

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| 07:04
|You can see that '''DWSIM '''automatically displays '''vapor''' value. The '''benzene mole fraction''' is 0.54.

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| 07:13
|This is an indirect evidence that the '''Separator''' is working as expected.

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| 07:18
|We can do a check on the working of the '''Mixer '''also.

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| 07:22
|You can see the '''Mixture''' composition is equimolar, as expected.

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| 07:29
| We will postpone a few other checks to the '''Assignment''' Section.

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| 07:34
| Let us save this file using the '''Save as''' option.

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| 07:39
| I will save it as '''flow-end.'''

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|07:46
|I suggest that you keep saving your work frequently.

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| 07:49
| Let me summarize.

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| 07:52
| We defined a simple flowsheet.

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| 07:54
|Explained how to create mixed feed.

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| 07:58 
| Introduced '''mixer''' and '''separator.'''

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| 08:00
| Showed how to connect them.

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| 08:02 
| Explained how to simulate.

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| 08:04
| Let me give some assignments.

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| 08:07
| The assignment in this slide has to do with '''mass balances'''.

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| 08:10
|I use blue colour to indicate streams and equipment.

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| 08:15
| Let us go to the next assignment. You have to verify mole fractions as mentioned in this slide.

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| 08:20 
| The third assignment has to do with the '''Separator.'''

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| 08:25
|Recall that we mentioned that it could be used to mix streams.

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| 08:30
|Remove the '''mixer''' and '''mixer-out''' and try it out.

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| 08:35
| In the next assignment, you will do the separation at a higher temperature.

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| 08:41
| Click on '''Separator.''' Let's scroll up.

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| 08:46
| Let us change the '''Override separation temperature''' to '''true'''.

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| 08:52 
| In the resulting field, change the value to '''100.'''

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| 08:59
| Bring '''Energy stream''' from '''Object Palette''' to the '''Flowsheet'''. This is a new stream.

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| 09:07
|Connect this stream to the '''Energy Stream''' of the '''Separator''' which I showed earlier.

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| 09:13
|Simulate and analyze your results.

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| 09:16
|This is summarized in the '''slide''' here.

|-
| 09:22
| This video summarizes the '''Spoken Tutorial''' project.

|-
| 09:26
|If you do not have good bandwidth, you may download and watch it.

|-
| 09:31
| We conduct workshops using '''Spoken Tutorials'''; give certificates. Please contact us.

|-
| 09:37
| Do you have questions in this '''Spoken Tutorial?'''

|-
|09:39
|Choose the '''minute''' and '''second''' where you have the question.

|-
| 09:43
|Explain your question briefly.

|-
| 09:45
|Someone from the '''FOSSEE''' team will answer them. Please visit this site.

|-
| 09:51  
| The '''FOSSEE '''team coordinates coding of solved examples of popular books.

|-
| 09:55
|We give honorarium and certificates to those who do this.

|-
| 10:00
|For more details, please visit this site.

|-
| 10:04
| The '''FOSSEE''' team helps migrate commercial simulator labs to '''DWSIM'''.

|-
| 10:09
|We give honorarium and certificates for those who do this.

|-
|10:13  
|For more details, please visit this site.

|-
| 10:17
| Spoken Tutorial and '''FOSSEE''' projects are funded by NMEICT, MHRD, Government of India.

|-
| 10:23
| Thanks for joining. Good Bye.
|}