DWSIM-3.4/C2/Introduction-to-Flowsheeting/English-timed
From Script | Spoken-Tutorial
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| 00:01 | Welcome to the spoken tutorial on Introduction to Flowsheeting in DWSIM. |
| 00:07 | In this tutorial, We will simulate a mixer. |
| 00:10 | Follow it up with a flash separator. |
| 00:12 | Learn how to give a two phase feed. |
| 00:16 | To record this tutorial, I am using DWSIM 3.4. |
| 00:20 | To practice this tutorial, you should have an exposure to DWSIM. |
| 00:24 | The prerequisite tutorials are mentioned on our website: spoken hyphen tutorial dot org. |
| 00:31 | Let me open DWSIM. |
| 00:33 | I have already opened a file flow-begin with two material streams. |
| 00:40 | I have selected Raoult’s law and the CGS system. |
| 00:43 | I went through the File menu and the Open option to get this. Let me close this. |
| 00:53 | This file is available at our spoken tutorial website. |
| 00:56 | You may download this file and use it or you can manually enter the required information. |
| 01:02 | You can see two streams Inlet1 and Inlet2 in the flowsheet canvas. |
| 01:08 | The next slide summarizes the contents of this file. |
| 01:13 | When we mix these streams, we get equimolar composition. |
| 01:17 | We have chosen these values to easily verify the calculations of DWSIM. |
| 01:23 | Let us go back to DWSIM. |
| 01:25 | We will now modify the streams so as to have vapor in them. |
| 01:31 | Select Inlet 1. |
| 01:34 | At the top of the Properties tab, locate Specification. Click on it. |
| 01:40 | Press the down-arrow and choose Pressure and Vapor Fraction. |
| 01:46 | Scroll down and locate Molar Fraction Vapor Phase. |
| 01:53 | Enter 1 here, that is, the entire stream is vapor. |
| 02:00 | In a similar way, make Inlet2 to have 50% Molar Fraction. |
| 02:13 | Now, let us insert a mixer to the flowsheet. |
| 02:17 | Locate the Mixer from the Object Palette. It is the third entry. |
| 02:22 | Click and drag it to the flowsheet. |
| 02:24 | Let us change the name of the mixer now. |
| 02:29 | Click on the Appearance tab. Delete the default name and enter Mixer. |
| 02:36 | Now, let us insert an output stream for the mixer. |
| 02:40 | Click on Material Stream and drag it to the flowsheet. |
| 02:45 | We will close the automatic pop-up and not enter anything. Because, all output streams should be left unspecified. |
| 02:54 | We will change the name of this stream to mixer-out. |
| 03:03 | Let me connect the streams to the mixer. |
| 03:05 | Let me click the mixer once. |
| 03:08 | Properties show up in the Selected Object window. |
| 03:12 | You can see that the mixer has up to 6 inlet streams. |
| 03:19 | Let us click on Inlet Stream 1. |
| 03:23 | A down-arrow appears, indicating a menu. |
| 03:27 | Click this arrow and choose Inlet1. |
| 03:32 | Similarly, connect Inlet2 at Inlet Stream 2. |
| 03:37 | Locate the outlet port, mentioned as Connected to Outlet here. |
| 03:43 | Click on it and choose mixer-out. |
| 03:49 | We can move the streams to make them better aligned. |
| 03:54 | The mixer is red, as it is not calculated yet. |
| 03:58 | To the right of the configure simulation button is Calculator. |
| 04:02 | It has several options. |
| 04:03 | The first one is the play button, to activate the solver. Press it. |
| 04:09 | Two buttons to the right of this are for Recalculate action. Click this button. |
| 04:17 | The mixer has become blue now, it means that the calculations are completed. |
| 04:22 | Now, click on mixer-out stream. |
| 04:27 | We can see its calculated values in the Properties tab. |
| 04:31 | We can verify that its composition is as expected. |
| 04:37 | Double click Mixture. |
| 04:40 | It has equimolar composition. |
| 04:43 | Now let us insert a flash separator. |
| 04:47 | Let us scroll down the Object Palette. |
| 04:51 | Let us locate the Separator Vessel. |
| 04:56 | It can be used to simulate VLE, LLE and VLLE systems. |
| 05:01 | Click and drag it to the flowsheet. |
| 05:06 | We need to connect two output streams to the separator. |
| 05:10 | Let us drag the material stream. |
| 05:13 | We will leave it unspecified as its properties are to be calculated. |
| 05:20 | We will name it as Vapour. |
| 05:27 | Similarly, create another stream and name it as Liquid. |
| 05:32 | Let us now connect the streams to the Separator. |
| 05:36 | In the first input port, we will connect mixer-out. |
| 05:44 | We can connect a total of five more input streams. |
| 05:47 | The separator mixes all the streams and separates. As a matter of fact, a separate mixer is not really required. |
| 05:54 | It also has a port to connect an energy stream |
| 05:59 | as we can see now. |
| 06:02 | These ideas will be taken up in the assignment section. |
| 06:07 | Let us connect the Vapour stream to the Vapour outlet port. |
| 06:13 | Similarly, connect the Liquid stream. |
| 06:21 | Once again, we can move the items for better alignment. |
| 06:26 | Notice that DWSIM completed the calculations automatically. |
| 06:31 | You are free to press the Recalculate button also. |
| 06:35 | In fact, you should do this whenever you are in doubt. |
| 06:39 | We now check whether the vapor and liquid are split properly in the separator. |
| 06:45 | Let us look at the vapor phase mole fractions of the stream Vapour. |
| 06:52 | The mole fraction of Benzene is 0.54. |
| 06:56 | Let us check whether this is in agreement with what mixer-out has. |
| 07:04 | You can see that DWSIM automatically displays vapor value. The benzene mole fraction is 0.54. |
| 07:13 | This is an indirect evidence that the Separator is working as expected. |
| 07:18 | We can do a check on the working of the Mixer also. |
| 07:22 | You can see the Mixture composition is equimolar, as expected. |
| 07:29 | We will postpone a few other checks to the Assignment Section. |
| 07:34 | Let us save this file using the Save as option. |
| 07:39 | I will save it as flow-end. |
| 07:46 | I suggest that you keep saving your work frequently. |
| 07:49 | Let me summarize. |
| 07:52 | We defined a simple flowsheet. |
| 07:54 | Explained how to create mixed feed. |
| 07:58 | Introduced mixer and separator. |
| 08:00 | Showed how to connect them. |
| 08:02 | Explained how to simulate. |
| 08:04 | Let me give some assignments. |
| 08:07 | The assignment in this slide has to do with mass balances. |
| 08:10 | I use blue colour to indicate streams and equipment. |
| 08:15 | Let us go to the next assignment. You have to verify mole fractions as mentioned in this slide. |
| 08:20 | The third assignment has to do with the Separator. |
| 08:25 | Recall that we mentioned that it could be used to mix streams. |
| 08:30 | Remove the mixer and mixer-out and try it out. |
| 08:35 | In the next assignment, you will do the separation at a higher temperature. |
| 08:41 | Click on Separator. Let's scroll up. |
| 08:46 | Let us change the Override separation temperature to true. |
| 08:52 | In the resulting field, change the value to 100. |
| 08:59 | Bring Energy stream from Object Palette to the Flowsheet. This is a new stream. |
| 09:07 | Connect this stream to the Energy Stream of the Separator which I showed earlier. |
| 09:13 | Simulate and analyze your results. |
| 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. |
