DWSIM/C2/Shell-and-Tube-Heat-Exchanger/English-timed

Time	Narration
00:01	Welcome to this tutorial on Simulating a Shell & Tube Heat Exchanger in DWSIM.
00:07	In this tutorial, we will learn to:
00:11	Simulate a Shell & Tube Heat Exchanger
00:14	Calculate the Outlet stream temperatures
00:17	Calculate Overall Heat Transfer Coefficient
00:20	Calculate Heat Exchange Area
00:23	Calculate Thermal Efficiency and LMTD
00:27	To record this tutorial, I am using DWSIM 4.3 and Windows 7
00:36	The process demonstrated in this tutorial is identical in other OS also, such as- Linux, Mac OS X or FOSSEE OS on ARM.
00:48	To practice this tutorial, you should know how to add components to a flowsheet
00:55	Select thermodynamic packages and add material stream and specify their properties.
01:03	The prerequisite tutorials are mentioned on our website.
01:08	You can access these tutorials and all the associated files from this site.
01:14	Here, we will develop a flowsheet to determine: Outlet stream temperatures
01:19	Overall Heat Transfer coefficient and Heat Exchange area.
01:24	Here we give Compounds and Inlet stream conditions.
01:29	Here we give Heat Exchanger properties and Property package.
01:34	Here we give Shell & Tube Heat Exchanger Properties.
01:39	I have already opened DWSIM on my machine.
01:44	Go to File menu and select New Steady-state Simulation.
01:50	Simulation Configuration Wizard window appears.
01:54	At the bottom, click on Next.
01:57	Now, in the Compounds Search tab, type Methanol.
02:03	Select Methanol from ChemSep database.
02:07	Similarly, add Water.
02:11	At the bottom, click on Next
02:14	Now comes Property Packages.
02:18	From the Available Property Packages, double-click on Raoult’s Law.
02:24	Then click on Next button.
02:28	We are moved to a new window named Flash Algorithm.
02:33	From Default Flash Algorithm select Nested Loops(VLE)
02:39	Click on Next button.
02:42	Next option is System of Units.
02:46	Under System of Units, select C5.
02:51	At the bottom, click on Finish button.
02:55	Let us maximize the simulation window for better visibility.
03:00	Now let’s insert two material streams that enter the Heat Exchanger.
03:06	On the right hand side of the main simulation window, go to Flowsheet Objects.
03:12	In the Filter List tab, type Material Stream.
03:17	From the displayed list, drag and drop a Material Stream to the Flowsheet.
03:23	Click on MSTR-000 to view its properties.
03:29	Let’s change the name of this stream to Water In.
03:34	Now we will specify the Water In stream properties.
03:40	Go to Input Data.
03:43	Select Flash Spec as Temperature and Pressure (TP), if not already selected.
03:50	By default, Temperature and Pressure are already selected as Flash Spec.
03:56	Change Temperature to 10 degree Centigrade and press Enter.
04:02	Change Pressure to 1 bar and press Enter.
04:08	Change Mass Flow to 15000 kg/h and press Enter.
04:16	Now let us specify the feed stream compositions.
04:21	Under Composition, choose the Basis as Mole Fractions, if not already selected.
04:29	By default, Mole Fractions is selected as Basis.
04:34	Now for Methanol, enter the Amount as 0 and press Enter.
04:42	Similarly, for Water, enter it as 1 and press Enter.
04:50	On the right, click on this green tick to Accept Changes.
04:55	Now drag and drop another Material Stream to the flowsheet.
05:01	Click on Material Stream “MSTR-001” to view its properties.
05:08	Let’s change the name of this stream to Methanol In.
05:13	Now we will specify the Methanol In stream properties.
05:19	Go to Input Data. Select Flash Spec as Temperature and Pressure (TP).
05:26	By default, Temperature and Pressure are again already selected as Flash Spec.
05:33	Change Temperature to 80 degC and press Enter.
05:40	Change Pressure to 5 bar and press Enter.
05:46	Change Mass Flow to 25000 kg/h and press Enter.
05:55	Now let us specify the Methanol In stream compositions.
06:01	Under Composition, choose the Basis as Mole Fractions, if not already selected.
06:09	By default, Mole Fractions is selected as Basis.
06:14	Now for Methanol, enter the Amount as 1 and press Enter.
06:22	Similarly, for Water, enter it as 0 and press Enter.
06:30	On the right, click on this green tick to Accept Changes.
06:35	Now let’s insert two more material streams that exit the Heat Exchanger.
06:41	To do that, let us drag one Material Stream.
06:45	Let us now arrange it.
06:48	Leave that stream as unspecified.
06:52	We will change the name of this stream to Water Out.
06:57	Next, we will insert another Material Stream.
07:01	Let us once again arrange it.
07:04	Leave that stream as unspecified. And name this stream as Methanol Out.
07:11	Now let us insert a Heat Exchanger into the flowsheet.
07:17	Go to Flowsheet Objects.
07:20	In the Filter list tab, type Heat Exchanger.
07:25	Click on the Heat Exchanger displayed.
07:28	Drag and drop it to the flowsheet.
07:31	Let us now arrange it as required for better visibility.
07:36	Let's click on it.
07:38	On the left, we can see a tab called Property Editor Window.
07:44	Under Connections, click on the drop-down against Inlet Stream 1. And select Methanol In.
07:54	Next, click on the drop-down against Outlet Stream 1. And select Methanol Out.
08:03	Then click on the drop-down against Inlet Stream 2. And select Water In.
08:11	Then click on the drop-down against Outlet Stream 2. And select Water Out.
08:21	Now go to the next section- Calculation Parameters.
08:27	Here, the first option is Calculation Type.
08:32	Click on the drop-down against Calculation Type.
08:35	Select Shell and Tubes Exchanger Ratings.
08:40	Next, click on the drop-down against Flow Direction
08:45	Select Counter Current.
08:48	Then click on the field against Cold Fluid Pressure Drop and enter 0.002 bar. Then press Enter.
09:01	Click on the field against Hot Fluid Pressure Drop and enter it as 0.025 bar.
09:10	Then press Enter.
09:13	Now we will enter the properties of Shell & Tube Exchanger.
09:18	Click on Edit Shell and Tube Heat Exchanger Properties.
09:24	Shell and Tube Exchanger Properties window opens.
09:28	Here, we can see the by default values for Shell and Tube side configurations.
09:34	First we will edit the Shell Side Configuration.
09:39	Click on the field against Shell in Series and enter it as 1
09:46	Click on the field against Shell Passes and enter it as 2
09:53	Click on the field against Internal Diameter and enter it as 1000
10:00	Click on the field against Fouling Factor and enter it as 0.00035
10:10	Click on the field against Baffle Spacing and enter it as 250
10:17	Click on the field against Baffle Cut(% diameter) and enter it as 25
10:24	This completes the Shell Side Configuration.
10:28	Now we will edit the Tube Side Configuration.
10:33	Click on the field against Internal Diameter and enter it as 15
10:40	Click on the field against External Diameter and enter it as 20
10:47	Click on the field against Length and enter it as 5
10:54	Click on the field against Fouling Factor and enter it as 0.00035
11:03	Click on the field against Roughness and enter it as 0.05
11:11	Click on the field against Thermal Conductivity and enter it as 60
11:18	Click on the field against Passes per Shell and enter it as 4
11:25	Click on the field against Tubes per Shell and enter it as 1024
11:33	Click on the field against Tube Spacing and enter it as 25
11:40	Click on the drop down against Tube Layout and select Square
11:47	Select the option Cold against Fluid in Tubes
11:53	Now all the Shell & Tube Exchanger Properties are specified.
11:58	Close the Shell and Tube Exchanger Properties window by clicking red cross mark on the top right of the window.
12:06	Now we will run the simulation.
12:09	So, from the toolbar, click on Solve Flowsheet button.
12:15	When the calculations are completed, click on Heat Exchanger in the Flowsheet.
12:21	From the Property Editor Window of Heat Exchanger, locate Calculation Parameters section.
12:28	Check Cold Fluid Outlet Temperature. It is 66.15 degree Centigrade
12:37	Check Hot Fluid Outlet Temperature. It is 40.95 degree Centigrade
12:45	Check Overall Heat Transfer Coefficient. It is 191.83 Watt per meter square kelvin
12:54	Check Heat Exchange Area. It is 319.12 meter square
13:01	From the Property Editor Window of Heat Exchanger, locate Results section.
13:08	Under Results section, check Thermal efficiency; it is 79.05 %
13:17	Check Log Mean Temperature Difference; it is 21.25 degree Centigrade.
13:25	Now we will check the stream-wise temperature results and Material balance.
13:32	Go to Insert menu and select Master Property Table.
13:39	Double-click on the Master Property Table to edit it.
13:44	Configure Master Property Table window opens.
13:49	Enter Name as Heat Exchanger – Stream Wise Results
13:55	Enter Object Type as Material Stream.
13:59	By default, Material Stream is already selected.
14:03	So we will not change it.
14:06	Under Properties to display, select Object as: Water In, Methanol In, Water Out and Methanol Out.
14:18	Under Property, scroll down to see all the parameters.
14:24	Now select the properties as: Temperature
14:29	Pressure
14:31	Mass Flow, Molar Flow
14:36	Molar Fraction(Mixture) / Methanol
14:41	Molar Fraction(Mixture) / Water
14:45	Close this window.
14:48	Move the Master Property Table for better visibility.
14:54	Here we can see the corresponding results for Inlet and Outlet streams.
15:00	Now we will check the properties of Heat Exchanger.
15:05	Go to Insert menu and select Master Property Table.
15:11	Double-click on the Master Property Table.
15:15	Configure Master Property Table window opens.
15:20	Enter Name as Heat Exchanger – Results.
15:25	Enter Object Type as Heat Exchanger.
15:31	Under Properties to display, select Object as HE-004
15:39	Under Property, scroll down to see all the parameters.
15:45	Now select the properties as: Global Heat Transfer Coefficient (U)
15:52	Heat Exchange Area (A) Heat Load
15:57	Cold fluid outlet temperature
15:59	Hot fluid outlet temperature
16:04	Logarithmic mean temperature difference LMTD and Thermal Efficiency
16:12	Close this window.
16:15	Move the Master Property Table for better visibility.
16:22	Here we can see the corresponding results for Heat Exchanger.
16:27	Let's summarize.
16:29	In this tutorial, we have learnt to Simulate a Shell & Tube Heat Exchanger
16:35	Calculate the Outlet stream temperatures
16:38	Calculate Overall Heat Transfer Coefficient
16:41	Calculate Heat Exchange Area
16:44	Calculate Thermal Efficiency and LMTD
16:48	As an assignment, Repeat this simulation with different Compounds, feed conditions and Thermodynamics.
16:57	Watch the video available at following link.
17:01	It summarizes the Spoken Tutorial project.
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17:14	Please post your times queries in this forum.
17:18	The FOSSEE team coordinates conversion of existing flow sheets into DWSIM.
17:25	We give honorarium and certificates. For more details, please visit this site.
17:32	The FOSSEE team coordinates coding of solved examples of popular books.
17:38	We give honorarium and certificates . For more details, please visit this site.
17:44	The FOSSEE team helps migrate commercial simulator labs to DWSIM.
17:50	We give honorarium and certificates. For more details, please visit this site
17:57	Spoken Tutorial and FOSSEE projects are funded by NMEICT, MHRD, Government of India.
18:05	This tutorial is contributed by Kaushik Datta and Priyam Nayak. Thanks for joining.

Contributors and Content Editors

PoojaMoolya, Sandhya.np14