STARTING PIPESYSOpen hysys and make new case and define components from basis environment.

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Select components from c1 to c8 and nitrogen, co2, C7+ and H2s.

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As C7+ is not in the hysys component list. To make C7+ select hypothetical and then quickcreate hypo component.

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Window will appear like this. Then write name as C7+

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Then move to critical tab and enter 122 in molecular weight and 760 kg/m3 in ideal density tab and thenclick on estimate unknown properties.

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Then select C7+ and click on add hypo.

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The final component list will appear like this.

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Now add fluid package as peng robinson. And then enter into simulation environment.

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From tools ,open the workbook

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Click on view

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From menu bar select workbook and then setup command to display the setup view as shownbelow

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Click the add button in variables group .

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Select std gas flow in the variables list and then ok. Click close icon to close the setup view.

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Add a material stream with the composition given below.

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Double click on molar flow and enter the following composition.

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Add second material stream Outlet.

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Add an energy stream (pipe line energy transfer)

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To add PIPESYS extension select flowsheet and then add operation.

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From available unit operations select PIPESYS extension and then add.

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Select condensate as inlet by drag down arrow. Outlet as outlet and energy as pipeline energytransfer.

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Select methods tab. Ensure that the gas-based with liquid and the calculate profile radiobuttons are selected as shown.

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Select temperature profile tab .enter 0 ft into the distance field and 2800ft into the elevationfield .

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Select the cell in the pipeline unit column that reads select pipe from the drop-downlist. a pipeline unit will be added to the profile matrix.

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Pipe unit view appears as given below.

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Select dimensions and enter 12 inches in nominal diameter and select 40 in pipe schedule.

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From same pipe unit select heat transfer and enter 4ft in center line depth and select sandy soilmoisture in soil type.

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Go to pipe coatings tab and PVC foam with a thickness of 4 inches as shown below. And thenclick close.

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Go to elevations profile tab and complete the specification for pipe .

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Using the copy and paste buttons on the elevation profile you can create a new pipeline unitwith identical properties. select the pipe unit that you want to copy in this case it is pipe #1.Click the copy button and then select the cell in pipe unit column with the label andclick the paste button. And a new pipe unit will be added to the profile. Follow the samemethod for the remaining pipe units. This only copies pipe unit view data so you are required toenter the elevation profile data for the remaining three pipes as given below.

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Go to stepsize tab of the pipesys extension view. Make sure the program defaults radio buttonis selected as shown below.

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Go to temperatures tab and enter 40 F in ambient temperature. The program will showconverged.

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You can view the results for each pipe unit on the main PIPESYS view.

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You can check to see if the program encountered any difficulties during the calculation phaseby going to the message tab.

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To open the PFD view click the PFD icon on the tool bar. shown below is the final view of theextension.

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