Sandhya.np14 at 16:41, 25 September 2018

2018-09-25T16:41:18Z

PoojaMoolya: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 ||Welcome to this tutorial on '''Calculation of Bubble Points and Dew Points''' in '''DWSIM.''' |- || 00:07 ||In this t..."

2018-08-27T05:45:40Z

Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 ||Welcome to this tutorial on '''Calculation of Bubble Points and Dew Points''' in '''DWSIM.''' |- || 00:07 ||In this t..."

New page

{|border=1
||'''Time'''
||'''Narration'''

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|| 00:01
||Welcome to this tutorial on '''Calculation of Bubble Points and Dew Points''' in '''DWSIM.'''

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|| 00:07
||In this tutorial, we will learn to generate: '''Bubble Point Temperature''' at a given pressure

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|| 00:15
|| '''Dew Point Temperature '''at a given pressure

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||00:19
||To record this tutorial, I am using '''DWSIM 5.2 (Classic UI)''' and '''Windows 10'''

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|| 00:28
||The process demonstrated in this tutorial is identical in other OS also, such as-

'''Linux''',

'''Mac OS X '''or

'''FOSSEE OS '''on '''ARM'''.

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||00:40
||To practice this tutorial, you should know to: Add components to a '''flowsheet'''

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|| 00:46
|| Select '''thermodynamic '''packages and Add '''material stream''' and specify their properties.

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||00:54
||The prerequisite tutorials are mentioned on our website, '''spoken-tutorial.org'''

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|| 00:59
|| You can access these tutorials and all the associated files from this site.

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||01:05
||In this tutorial, using '''DWSIM''', we will calculate:

1) '''Bubble Point Temperature''' at '''2 bar'''

2) '''Dew Point Temperature''' at '''10 bar'''

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|| 01:15
|| Here we provide the '''compounds, inlet stream conditions''' and '''property package'''.

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||01:21
||I have already opened '''DWSIM '''on my machine.

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||01:26
||Go to '''File '''menu and select '''New Steady-state Simulation.'''

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||01:33
||'''Simulation Configuration Wizard '''window appears.

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||01:37
||At the bottom, click on the '''Next '''button.

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||01:41
||Now, in the '''Compounds Search '''tab, type '''Methane.'''

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||01:46
||Select '''Methane '''from '''ChemSep '''database.

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||01:50
||Next, we will add''' Ethane.'''

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||01:54
||Similarly, add '''Propane.'''

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||01:58
||Next, add '''Isobutane.'''

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||02:02
||Followed by '''N-butane.'''

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||02:06
||Similarly, add '''Isopentane.'''

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||02:10
||Then add '''N-pentane.'''

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||02:14
||At the bottom of the window, click on the '''Next '''button.

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||02:18
||The '''Property Packages '''opens.

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||02:21
||From '''Available Property Package '''list, double-click on '''Soave-Redlich-Kwong.'''

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||02:28
||Then click on the '''Next '''button.

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||02:31
||We are moved to a new window named '''Flash Algorithm'''.

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||02:36
||From '''Default Flash Algorithm '''select '''Nested Loops(VLE)'''

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||02:41
||Click on the '''Next '''button at the bottom.

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||02:44
||The next option is '''System of Units.'''

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||02:48
||Under '''System of Units''', select '''C5'''.

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||02:52
||At the bottom, click on the '''Finish '''button.

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||02:55
||Let us maximize the '''simulation window '''for better visibility.

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||03:00
||Now let’s insert a '''material stream''' for which we have to calculate '''Bubble points''' and '''Dew points'''.

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||03:07
||On the right hand side of the main '''simulation window,''' go to '''Flowsheet Objects.'''

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||03:12
||In the '''Filter List '''tab, type '''Material Stream.'''

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||03:17
||From the displayed list, drag and drop a '''Material Stream '''to the '''Flowsheet'''.

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||03:23
||Click on the '''Material Stream “MSTR-000” '''to view its properties.

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||03:29
||Let’s change the name of this '''stream '''to '''Feed.'''

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||03:33
||Now we will specify the '''Feed stream '''properties.

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||03:37
||Go to the '''Input Data.'''

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||03:39
||Select '''Flash Spec '''as '''Temperature and Pressure (TP), '''if not already selected.

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||03:44
||By default, '''Temperature and Pressure '''are already selected as '''Flash Spec.'''

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||03:50
||Change '''Temperature '''to '''25 degree Celsius '''and press '''Enter.'''

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||03:56
||Change '''Pressure '''to '''5 bar '''and press '''Enter'''.

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||04:00
||Now let us specify the '''feed stream compositions'''.

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||04:05
||Under '''Composition''', choose the '''Basis '''as '''Mole Fractions, '''if not already selected.

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||04:13
||By default, '''Mole Fractions '''is selected as '''Basis.'''

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||04:18
||Now for '''Methane''', type the '''Amount '''as '''0.05 '''and press '''Enter.'''

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||04:26
||For '''Ethane, '''type it as '''0.1 '''and press '''Enter. '''

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||04:33
||Similarly, for '''Propane, '''type '''0.15''' and press '''Enter. '''

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||04:39
||And for '''Isobutane''', type '''0.1 '''and press '''Enter.'''

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||04:45
||Next, for '''N-butane''', type '''0.2 '''and press '''Enter.'''

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||04:51
||For '''Isopentane''', type '''0.25 '''and press '''Enter.'''

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||04:57
||Lastly, for '''N-pentane''', type '''0.15 '''and press '''Enter.'''

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||05:04
||On the right, click on this green tick to '''Accept Changes.'''

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||05:08
||Now we will see how '''property package''' calculates '''phase equilibrium''' data of '''compounds'''.

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||05:14
||To do this, go to '''Utilities'''.

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||05:17
||Click on '''Add Utility.'''

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||05:20
||In the '''Add Utility '''window under '''Object Type''', select '''Material Streams.'''

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||05:27
||Under '''Utility Type''', select '''Phase Envelope.'''

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||05:31
||Under '''Flowsheet Object''', select '''Feed.'''

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||05:35
||Then at the bottom, click on the '''Add Utility''' button.

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||05:40
||'''Phase Envelope''' window opens.

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||05:43
||Let us adjust the '''Phase Envelope''' window for better visibility.

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||05:49
||Enter '''Name''' as '''BubblePoint-DewPoint.'''

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|| 05:55
|| Under '''Settings''', Click on '''Bubble Points''' tab.

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|| 06:00
|| Select the check box against '''Custom Initialization.'''

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|| 06:05
|| We are going to calculate '''bubble point temperature''' against given pressure.

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|| 06:10
||So, let '''Initial Flash''' method be '''PVF.'''

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||06:14
||Here, we will change only '''Initial Pressure''' and '''Pressure Step.'''

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||06:19
|| Type '''Initial Pressure''' as '''1 bar''' and press '''Enter.'''

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|| 06:24
|| Type '''Pressure Step''' as '''1 bar''' and press '''Enter.'''

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|| 06:30
|| We will not change any '''temperature value''' as we are doing a '''PVF Flash'''.

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||06:36
|| Now, go to '''Dew Points''' tab.

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|| 06:39
|| We will repeat the same process as '''Bubble Points Initialization.'''

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|| 06:44
|| Select the check box against '''Custom Initialization.'''

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|| 06:49
|| We are going to calculate '''dew point temperature''' against given pressure.

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|| 06:54
|| So, here also, let the '''Initial Flash''' method be '''PVF.'''

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|| 06:59
|| Hence we will change only '''Initial Pressure''' and '''Pressure Step'''

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|| 07:04
|| Type '''Initial Pressure''' as '''1 bar''' and press '''Enter.'''

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|| 07:10
|| Type '''Pressure Step''' as '''1 bar''' and press '''Enter.'''

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||07:16
||Now click on the '''Calculate''' button at the bottom.

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||07:20
||The calculation process is running in the background.

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||07:25
||We can see the '''dew points''' and '''bubble points''' generated at different pressure and temperatures.

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||07:32
||Under '''Results, '''click on '''Table.'''

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||07:36
||In the column '''Pb''', look for '''2 bar''' at which we had to calculate the '''bubble point'''.

Here is '''2 bar''' under '''Pb''' column.

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||07:45
||Look for temperature in '''Tb''' column corresponding to '''2 bar.'''

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|| 07:50
||We can see the '''bubble point temperature''' to be '''minus 91.9274 degree Celcius'''

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||07:58
||Next we have to find '''Dew point temperature''' at '''10 bar.'''

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||08:03
||In the column '''Pd''', look for '''10 bar''' at which we have to find the '''dew point'''.

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|| 08:09
||Here is '''10 bar''' under '''Pd''' column.

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||08:12
||Look for temperature in '''Td''' column corresponding to '''10 bar.'''

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|| 08:17
||We can see the '''dew point temperature''' to be '''87.396 degree Celcius.'''

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||08:24
||There is an alternative way by which we can verify the correctness of the above results.

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||08:30
||For this, let’s get back to '''flowsheet''' window.

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||08:34
||Click on '''Feed'''.

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||08:37
||Under '''Input data''', select '''Flash Spec''' as '''Pressure and Vapor Fraction (PVF)'''

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||08:44
||Type '''Vapor Phase Mole Fraction '''as '''0''' and press Enter.

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||08:50
||And '''Pressure''' as 2''' bar''' and press '''Enter'''.

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||08:56
||Now check the temperature which is '''minus 91.9274 degree C.'''

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|| 09:03
|| This is the '''bubble point temperature''' at '''2 bar''' pressure.

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|| 09:07
|| It matches the value obtained earlier from '''Phase envelope'''.

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||09:11
||Similarly, let’s check for '''Dew point temperature'''.

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||09:16
||Let the '''Flash Spec''' be same as''' Pressure and Vapor Fraction (PVF)'''

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||09:21
||Type '''Vapor Phase Mole Fraction '''as '''1 ''' and press '''Enter'''.

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||09:27
||And '''Pressure''' as '''10 bar''' and press '''Enter'''.

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||09:32
||Now check the temperature which is '''87.396 degree C.'''

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||09:38
||This is the '''dew point temperature''' at '''10 bar''' pressure.

|-
||09:42
||It matches the value obtained earlier from '''Phase envelope'''.

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||09:46
||Let's summarize.

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||09:48
||In this tutorial, we have learnt to generate: '''Bubble Point Temperature''' at a given pressure

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||09:54
|| '''Dew Point Temperature '''at a given pressure

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||09:57
||As an assignment, Calculate the following for the given '''component system''' and '''inlet conditions'''

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||10:04
|| Calculate '''Bubble Point Pressure''' at '''20 degree C'''

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||10:08
|| Calculate '''Dew Point Pressure''' at '''60 degree C'''

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||10:12
||Watch the video available at following link.

'''http://spoken-tutorial.org/ '''

It summarizes the Spoken Tutorial project.

|-
||10:19
||The Spoken Tutorial Project Team

Conducts workshops and Gives certificates. For more details, please write to us.

|-
||10:26
||Please post your times queries in this forum.

|-
||10:31
||The '''FOSSEE '''team coordinates conversion of existing flow sheets into '''DWSIM'''.

|-
||10:37
||We give honorarium and certificates.

|-
||10:40
||For more details, please visit this site.

|-
||10:43
||The '''FOSSEE '''team coordinates coding of solved examples of popular books.

|-
||10:48
||We give honorarium and certificates. For more details, please visit this site.

|-
||10:55
||The '''FOSSEE '''team helps migrate commercial simulator labs to '''DWSIM.'''

|-
||11:01
||We give honorarium and certificates. For more details, please visit this site

|-
||11:08
||'''Spoken Tutorial '''and '''FOSSEE '''projects are funded by '''NMEICT, MHRD''', Government of India.

|-
||11:16
||This tutorial is contributed by Kaushik Datta and Priyam Nayak.

Thanks for joining.
|-
|}

DWSIM/C2/Calculation-of-Bubble-Points-and-Dew-Points/English-timed - Revision history

Sandhya.np14 at 16:41, 25 September 2018

PoojaMoolya: Created page with "{|border=1 ||'''Time''' ||'''Narration''' |- || 00:01 ||Welcome to this tutorial on '''Calculation of Bubble Points and Dew Points''' in '''DWSIM.''' |- || 00:07 ||In this t..."