Difference between revisions of "DWSIM/C2/Heat-Exchanger/English-timed"

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|-
 
|-
 
||07:14
 
||07:14
−
|| Then click on drop-down against '''Inlet Stream 2. '''
+
|| Then click on drop-down against '''Inlet Stream 2 ''' and select '''Water In.'''
−
 
+
−
And select '''Water In.'''
+
  
 
|-
 
|-
 
|| 07:21
 
|| 07:21
−
|| Then click on drop-down against '''Outlet Stream 2. '''
+
|| Then click on drop-down against '''Outlet Stream 2''' and select '''Water Out.'''
−
 
+
−
And select '''Water Out.'''
+
  
 
|-
 
|-
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|-
 
|-
 
||07:39
 
||07:39
−
|| Select '''Outlet Temperatures '''
+
|| Select '''Outlet Temperatures.'''
  
 
|-
 
|-
 
|| 07:43
 
|| 07:43
−
|| Next, click on the drop-down against '''Flow Direction'''
+
|| Next, click on the drop-down against '''Flow Direction'''. Select '''Counter Current.'''
−
 
+
−
Select '''Counter Current.'''
+
  
 
|-
 
|-
 
|| 07:51
 
|| 07:51
 
|| Then click on the field against '''Cold Fluid Pressure Drop '''and enter '''0.002 bar.'''
 
|| Then click on the field against '''Cold Fluid Pressure Drop '''and enter '''0.002 bar.'''
−
 
 
Then press '''Enter.'''
 
Then press '''Enter.'''
  
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|-
 
|-
 
||08:15
 
||08:15
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|| Click on the field against '''Overall Heat Transfer Coefficient '''and enter it as '''450 Watt meter sqaure Kelvin'''
+
|| Click on the field against '''Overall Heat Transfer Coefficient '''and enter it as '''450 Watt meter square Kelvin.'''
−
 
+
 
Then press '''Enter.'''
 
Then press '''Enter.'''
  
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|| 08:27
 
|| 08:27
 
|| Click on the field against '''Heat Exchange Area '''and enter it as '''250 meter square.'''
 
|| Click on the field against '''Heat Exchange Area '''and enter it as '''250 meter square.'''
−
 
 
Then press '''Enter.'''
 
Then press '''Enter.'''
  
 
|-
 
|-
 
|| 08:37
 
|| 08:37
−
|| Now we will run the '''simulation.'''
+
|| Now we will '''run''' the '''simulation.'''
  
 
|-
 
|-
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|-
 
|-
 
|| 09:28
 
|| 09:28
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|| Enter '''Name '''as '''Heat Exchanger – Stream Wise Results'''
+
|| Enter '''Name '''as '''Heat Exchanger – Stream Wise Results'''.
  
 
|-
 
|-
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|-
 
|-
 
|| 09:40
 
|| 09:40
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|| So we will not change it.
+
|| So, we will not change it.
  
 
|-
 
|-
 
||09:43
 
||09:43
−
|| Under '''Properties to display''', select '''Object '''as: '''Water In, Methanol In, Water Out, Methanol Out'''
+
|| Under '''Properties to display''', select '''Object '''as: '''Water In, Methanol In, Water Out, Methanol Out'''.
  
 
|-
 
|-
 
|| 09:54
 
|| 09:54
−
|| Under '''Property''', scroll down to see all the parameters.
+
|| Under '''Property''', scroll-down to see all the parameters.
  
 
|-
 
|-
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||Now select the properties as:
 
||Now select the properties as:
  
−
'''Temperature'''
+
'''Temperature''',
  
−
'''Pressure'''
+
'''Pressure''',
  
−
'''Mass Flow'''
+
'''Mass Flow''',
  
−
'''Molar Flow'''
+
'''Molar Flow''',
  
 
|-
 
|-
 
|| 10:11
 
|| 10:11
−
||'''Molar Fraction(Mixture) / Methanol'''
+
||'''Molar Fraction(Mixture) / Methanol''',
  
 
|-
 
|-
 
|| 10:15
 
|| 10:15
−
||'''Molar Fraction(Mixture) / Water'''
+
||'''Molar Fraction(Mixture) / Water'''.
  
 
|-
 
|-
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|-
 
|-
 
|| 10:27
 
|| 10:27
−
||Here we can see the corresponding results for '''Inlet''' and '''Outlet''' streams.
+
||Here, we can see the corresponding results for '''Inlet''' and '''Outlet''' streams.
  
 
|-
 
|-
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|-
 
|-
 
|| 10:59
 
|| 10:59
−
|| Under '''Properties to display''', select '''Object '''as '''HE-004'''
+
|| Under '''Properties to display''', select '''Object '''as '''HE-004'''.
  
 
|-
 
|-
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|-
 
|-
 
|| 11:12
 
|| 11:12
−
||Now select the properties as: '''Global Heat Transfer Coefficient (U)'''
+
||Now, select the properties as: '''Global Heat Transfer Coefficient (U)''',
  
 
|-
 
|-
 
|| 11:17
 
|| 11:17
−
||'''Heat Exchange Area (A)'''
+
||'''Heat Exchange Area (A)''',
−
 
+
'''Heat Load''',
−
'''Heat Load'''
+
  
 
|-
 
|-
 
|| 11:21
 
|| 11:21
−
||'''Cold fluid outlet temperature'''
+
||'''Cold fluid outlet temperature''',
−
 
+
'''Hot fluid outlet temperature''',
−
'''Hot fluid outlet temperature'''
+
  
 
|-
 
|-
 
|| 11:26
 
|| 11:26
 
||'''Logarithmic mean temperature difference(LMTD)''' and
 
||'''Logarithmic mean temperature difference(LMTD)''' and
−
 
+
'''Thermal Efficiency'''.
−
'''Thermal Efficiency'''
+
  
 
|-
 
|-
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|-
 
|-
 
|| 11:45
 
|| 11:45
−
|| In this tutorial, we have learnt to Simulate a ''' Heat Exchanger'''
+
|| In this tutorial, we have learnt to: simulate a ''' Heat Exchanger''',
  
 
|-
 
|-
 
|| 11:50
 
|| 11:50
−
|| Calculate the''' Outlet stream temperatures '''
+
|| calculate the''' Outlet stream temperatures, '''
  
 
|-
 
|-
 
|| 11:53
 
|| 11:53
−
||Calculate''' Thermal Efficiency '''and''' LMTD'''
+
||calculate''' Thermal Efficiency '''and''' LMTD'''.
  
 
|-
 
|-
 
|| 11:57
 
|| 11:57
−
|| As an assignment, Repeat this simulation with different '''Compounds, feed conditions '''and '''Thermodynamics'''.
+
|| As an assignment, repeat this simulation with different '''Compounds, feed conditions '''and '''Thermodynamics'''.
  
 
|-
 
|-
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|-
 
|-
 
|| 12:08
 
|| 12:08
−
||It summarizes the Spoken Tutorial project.
+
||It summarizes the '''Spoken Tutorial''' project.
  
 
|-
 
|-
 
|| 12:12
 
|| 12:12
−
|| The Spoken Tutorial Project Team,  Conducts workshops and Gives certificates
+
|| The Spoken Tutorial Project Team conducts workshops and gives certificates.
−
 
+
 
For more details, please write to us.
 
For more details, please write to us.
  
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||13:09
 
||13:09
 
|| This tutorial is contributed by Kaushik Datta and Priyam Nayak.
 
|| This tutorial is contributed by Kaushik Datta and Priyam Nayak.
−
 
 
Thanks for joining.
 
Thanks for joining.
  
 
|}
 
|}

Latest revision as of 11:13, 21 June 2018

Time Narration
00:01 Welcome to this tutorial on simulating a Heat Exchanger in DWSIM.
00:07 In this tutorial, we will learn to: simulate a Heat Exchanger,
00:13 calculate the Outlet stream temperatures,
00:16 calculate Thermal Efficiency and LMTD.
00:20 To record this tutorial, I am using DWSIM 4.3 and Windows 7.
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.

00:40 To practice this tutorial, you should know how to add components to a flowsheet,
00:47 select thermodynamic packages,
00:50 add material stream and specify their properties.
00:54 The prerequisite tutorials are mentioned on our website.
00:58 You can access these tutorials and all the associated files from this site.
01:04 We will develop a flowsheet to determine the Outlet stream temperatures.
01:09 Here, we give Compounds and Inlet stream conditions.
01:13 Here, we give Heat Exchanger properties and Property package.
01:18 I have already opened DWSIM on my machine.
01:23 Go to File menu and select New Steady-state Simulation.
01:28 Simulation Configuration Wizard window appears.
01:32 At the bottom, click on Next button.
01:36 Now, in the Compounds Search tab, type Methanol.
01:42 Select Methanol from ChemSep database.
01:46 Similarly, add Water.
01:49 At the bottom, click on Next button.
01:53 Now comes Property Packages.
01:56 From Available Property Packages, double-click on Raoult’s Law.
02:01 Then click on Next button.
02:04 We are moved to a new window named Flash Algorithm.
02:08 From Default Flash Algorithm, select Nested Loops(VLE).
02:14 Click on Next button.
02:17 Next option is System of Units.
02:21 Under System of Units, select C5.
02:26 At the bottom, click on Finish button.
02:30 Let us maximize the simulation window for better visibility.
02:35 Now, let’s insert two material stream that enter the Heat Exchanger.
02:41 On the right hand side of the main simulation window, go to Flowsheet Objects.
02:47 In the Filter List tab, type Material Stream.
02:52 From the displayed list, drag and drop a Material Stream to the Flowsheet.
02:58 Click on the Material Stream “MSTR-000” to view its properties.
03:04 Let’s change the name of this stream to Water In.
03:08 Now we will specify the Water In stream properties.
03:13 Go to Input Data.
03:15 Select Flash Spec as Temperature and Pressure (TP), if not already selected.
03:21 By default, Temperature and Pressure are already selected as Flash Spec.
03:27 Change Temperature to 10 degC and press Enter.
03:32 Change Pressure to 1 bar and press Enter.
03:37 Change Mass Flow to 15000 kg per hour and press Enter.
03:44 Now, let us specify the feed stream compositions.
03:49 Under Composition, choose the Basis as Mole Fractions, if not already selected.
03:56 By default, Mole Fractions is selected as Basis.
04:01 Now for Methanol, enter the Amount as 0 and press Enter.
04:08 Similarly, for Water, enter it as 1 and press Enter.
04:15 On the right, click on this green tick to Accept Changes.
04:20 Now drag and drop another Material Stream to the flowsheet.
04:25 Click on Material Stream “MSTR-001” to view its properties.
04:30 Let’s change the name of this stream to Methanol In.
04:35 Now we will specify the Methanol In stream properties.
04:40 Go to Input Data.
04:42 Select Flash Spec as Temperature and Pressure(TP).
04:46 By default, Temperature and Pressure are again already selected as Flash Spec.
04:42 Change Temperature to 80 degC and press Enter.
04:58 Change Pressure to 5 bar and press Enter.
05:03 Change Mass Flow to 25000 kg/h and press Enter.
05:11 Now, let us specify the Methanol In stream compositions.
05:17 Under Composition, choose the Basis as Mole Fractions, if not already selected.

By default, Mole Fractions is selected as Basis.

05:29 Now for Methanol, enter the Amount as 1 and press Enter.
05:36 Similarly, for Water, enter it as 0 and press Enter.
05:43 On the right, click on this green tick to Accept Changes.
05:48 Now, let’s insert two more material streams that exit the Heat Exchanger.
05:54 To do that, let us drag one Material Stream.
05:58 Let us now arrange it.
06:00 Leave that stream as unspecified.
06:03 We will change the name of this stream to Water Out.
06:07 Next, we will insert another Material Stream.
06:11 Let us once again arrange it.
06:14 Leave that stream as unspecified.
06:18 And name this stream as Methanol Out.
06:22 Now, let us insert a Heat Exchanger into the flowsheet.
06:27 Go to the Flowsheet Objects.
06:30 In the Filter list tab, type Heat Exchanger.
06:35 Click on the Heat Exchanger displayed.
06:39 Drag and drop it to the flowsheet.
06:42 Let us now arrange it as required for better visibility.
06:47 We are now ready to specify the Heat Exchanger. Let's click on it.
06:53 On the left, we can see a tab called Property Editor Window.
06:58 Under Connections, click on the drop-down against Inlet Stream 1.

And select Methanol In.

07:07 Next, click on drop-down against Outlet Stream 1 and select Methanol Out.
07:14 Then click on drop-down against Inlet Stream 2 and select Water In.
07:21 Then click on drop-down against Outlet Stream 2 and select Water Out.
07:28 Now go to the next section- Calculation Parameters.
07:32 Here, the first option is Calculation Type.
07:36 Click on the drop-down against Calculation Type.
07:39 Select Outlet Temperatures.
07:43 Next, click on the drop-down against Flow Direction. Select Counter Current.
07:51 Then click on the field against Cold Fluid Pressure Drop and enter 0.002 bar.

Then press Enter.

08:03 Click on the field against Hot Fluid Pressure Drop and enter it as 0.025 bar.
08:11 Then press Enter.
08:15 Click on the field against Overall Heat Transfer Coefficient and enter it as 450 Watt meter square Kelvin.

Then press Enter.

08:27 Click on the field against Heat Exchange Area and enter it as 250 meter square.

Then press Enter.

08:37 Now we will run the simulation.
08:40 So, from the toolbar, click on Solve Flowsheet button.
08:45 When the calculations are completed, click on Heat Exchanger in the Flowsheet.
08:50 From the Property Editor Window of Heat Exchanger, locate Results section.
08:56 Check Thermal efficiency; it is 94.5%. Check Log Mean Temperature Difference; it is 10.29 degree Centigrade.
09:09 Now we will check the stream-wise temperature results and Material balance.
09:15 Go to Insert menu and select Master Property Table.
09:20 Double-click on Master Property Table to edit it.
09:24 Configure Master Property Table window opens.
09:28 Enter Name as Heat Exchanger – Stream Wise Results.
09:33 Enter Object Type as Material Stream. By default, Material Stream is already selected.
09:40 So, we will not change it.
09:43 Under Properties to display, select Object as: Water In, Methanol In, Water Out, Methanol Out.
09:54 Under Property, scroll-down to see all the parameters.
10:00 Now select the properties as:

Temperature,

Pressure,

Mass Flow,

Molar Flow,

10:11 Molar Fraction(Mixture) / Methanol,
10:15 Molar Fraction(Mixture) / Water.
10:19 Close this window.
10:22 Move the Master Property Table for better visibility.
10:27 Here, we can see the corresponding results for Inlet and Outlet streams.
10:33 Now we will check the properties of Heat Exchanger.
10:37 Go to Insert menu and select Master Property Table.
10:42 Double-click on Master Property Table.
10:46 Configure Master Property Table window opens.
10:50 Enter Name as Heat Exchanger – Results.
10:55 Enter Object Type as Heat Exchanger.
10:59 Under Properties to display, select Object as HE-004.
11:06 Under Property, scroll down to see all the parameters.
11:12 Now, select the properties as: Global Heat Transfer Coefficient (U),
11:17 Heat Exchange Area (A),

Heat Load,

11:21 Cold fluid outlet temperature,

Hot fluid outlet temperature,

11:26 Logarithmic mean temperature difference(LMTD) and

Thermal Efficiency.

11:32 Close this window.
11:35 Move the Master Property Table for better visibility.
11:39 Here we can see the corresponding results for Heat Exchanger.
11:43 Let's summarize.
11:45 In this tutorial, we have learnt to: simulate a Heat Exchanger,
11:50 calculate the Outlet stream temperatures,
11:53 calculate Thermal Efficiency and LMTD.
11:57 As an assignment, repeat this simulation with different Compounds, feed conditions and Thermodynamics.
12:05 Watch the video available at following link.
12:08 It summarizes the Spoken Tutorial project.
12:12 The Spoken Tutorial Project Team conducts workshops and gives certificates.

For more details, please write to us.

12:20 Please post your times queries in this forum.
12:24 The FOSSEE team coordinates conversion of existing flow sheets into DWSIM.
12:29 We give honorarium and certificates. For more details, please visit this site.
12:36 The FOSSEE team coordinates coding of solved examples of popular books.
12:41 We give honorarium and certificates. For more details, please visit this site.
12:48 The FOSSEE team helps migrate commercial simulator labs to DWSIM.
12:54 We give honorarium and certificates. For more details, please visit this site.
13:00 Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
13:09 This tutorial is contributed by Kaushik Datta and Priyam Nayak.

Thanks for joining.

Contributors and Content Editors

PoojaMoolya, Sandhya.np14

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