Activated Exchanger Design & Rating Aspen 8.4

2013 Aspen Technology, Inc. AspenTech, aspenONE, the Aspen leaf logo, the aspenONE logo, and OPTIMIZE are trademarks of Aspen Technology, Inc. All rights reserved. 11-4606-1113

Jump Start: Activated Exchanger Design & Rating inAspen Plus V8.4

A Brief Tutorial (and supplement to training and online documentation)

Lauren Sittler, Product Management, Aspen Technology, Inc.


Jump Start: Activated Exchanger Design & Rating in Aspen Plus V8.4

Table of ContentsIntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

New Capabilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Overview of the User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Starting Activated EDR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

The EDR Dashboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Flowsheet Highlights and Flyovers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Operational Risk Flowsheet Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

The Activated EDR Summary Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Summary Table Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Converting Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Model Types Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Converting a Simple Model to Rigorous EDR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Rigorous to Simple . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10



1

IntroductionActivated Exchanger Design & Rating (EDR) is a new Activated Analysis tool available within AspenTechs V8.4

simulators Aspen Plus and Aspen HYSYS. Like Activated Energy Analysis and Activated Economic Evaluation,

Activated EDR helps process engineers quickly evaluate feasible design alternatives and immediately assess the impact

on flowsheet capital and operating expenditures.

Activated EDR provides an easy way to convert simple heat exchanger models to rigorous models, and provides quick

access to rigorous model details. The EDR dashboard uses visual indicators to convey information about heat exchangers

model status and shows all operational risks, if any, that have been detected in rigorous heat exchanger models.

New Capabilities

Convert simple heat exchanger models into rigorous designs from the flowsheet to obtain a fully rigorous, cost-

optimized geometry that accurately models thermal and hydraulic performance

Easily track and change the model-type for all heat exchanger equipment in the simulation

Instantly view operational risks, such as vibration and erosion, right from the flowsheet

Overview of the User InterfaceStarting Activated EDR

EDR Activation is turned on and off from the Activated Analysis panel. Open the Analysis Panel by clicking on the

Activated Analysis button on the Home ribbon (Figure 1).

Figure 1. Opening the Activated Analysis panel

Click the heat exchanger icon to turn it on and click the close button to turn it off (Figure 2). Opening and closing the EDR

dashboard does not affect the EDR models in your flowsheet; it will not automatically convert a simple model to rigorous

and vice versa. It will simply reveal more information about the heat exchanger models in your flowsheet.

Figure 2. The Activated EDR icon


2


The EDR Dashboard

The dashboard is the first component displayed when you activate EDR. It contains two pie charts: Model Status and

Operational Risk (Figure 3).

Figure 3: The EDR dashboard

The Model Status Pie Chart

The Model Status Pie Chart shows relatively how many exchanger models in the flowsheet are rigorous EDR and how

many are simple. Rigorous EDR models provide greater accuracy in modeling the actual operation of heat exchanger

equipment in a process as compared to simple models. The percentage of grey in this chart represents an opportunity to

improve the fidelity of the process model.

Simple models provide a very limited amount of sizing data that is only accurate within a small range of operating points.

Rigorous models provide full heat exchanger geometry, and model heat transfer and hydraulic performance as process

conditions change.

The Operational Risk Pie Chart

The Operational Risk Pie Chart shows the proportion of exchangers in the flowsheet that contain identified risks. Only

rigorous models can predict when an operational risk is present, therefore no operational risk status is given for simple

models. For rigorous models, the yellow section of the pie chart indicates a warning was detected by EDR.

All of the operational risk warnings that are identified by EDR have been classified into categories for Activation. The

yellow categories for each model type are shown below, as well as a sample of the red risks for Shell&Tube exchangers.

Red risks are the most serious risk types and are extremely rare.

Color Model Status

Grey Simple heat exchanger

Blue Rigorous exchanger

RedRigorous exchanger,calculation error

Color Operation Risk Level

Grey Simple heat exchanger

Green Rigorous exchanger, no warnings

Yellow Rigorous exchanger, operation warnings detected

Red Rigorous exchanger, serious risks detected



3

Yellow Operational Warning Categories Identified by Activation

Red Risks Identified by Activation for Shell&Tube Exchangers

Choking will occur in one of the nozzles.

This exchanger cannot operate within the specified flow. The calculated nozzle pressure drop exceeds the absolute

pressure.

This exchanger cannot operate with the specified flow. The calculated total nozzle pressure drop exceeds the inlet

pressure.

The total calculated bundle pressure drop exceeds the bundle inlet pressure. The bundle outlet pressure has been reset,

artificially.

The large nozzle pressure loss, at the specified temperature and vapor fraction, suggests the flow will be choked. All or

part of the pressure drop may be scaled to permit the calculation to proceed. The difference between inlet and outlet

pressure will then be inconsistent with the calculated pressure loss.

Flowsheet Highlights and Flyovers

Flowsheet components can be turned on by clicking on the dashboard panels. Clicking on the Model Status panel will turn

on Model Status highlights and flyovers. Clicking on the Operational Risk panel will turn on Operational Risk highlights

and flyovers (Figure 4).

Figure 4: Turning on flowsheet components

Shell&Tube, AirCooled, Plate

Pressure

Temperature

Vibration

Erosion: RhoV2

Heat Transfer

Pressure Drop

Flow

Other (all other risks in EDR thatdo not fall into the abovecategories)

martellaTypewritten Text








4


Model Status Flowsheet Components

Model Status highlights circle rigorous exchangers in blue (Figure 5) and simple exchangers in grey (Figure 6). Hover over

a blue highlight to see a setting plan for the EDR design, as well as key geometry and heat transfer information. Hover over

a grey highlight to see information about the simple model and convert the model to rigorous.

Figure 5. Rigorous Model Status flyover

Figure 6. Simple Model Status flyover



5

Operational Risk Flowsheet Components

Click on the Operational Risk panel of the dashboard to reveal which exchangers contain operational risks detected by

EDR. Mouse over the highlight to show which kinds of warnings are present for that exchanger (Figure 7). Click on the

traffic light at the top to reveal a 2nd level flyover that shows the exact warning found by EDR (Figure 8).

Figure 7. Operational Risk highlights and flyovers

Figure 8. Operation warnings


6


The Activated EDR Summary TableThe Summary table is an organized list of all heat exchangers in your flowsheet. From this table you can access rigorous

exchanger forms, convert models from simple to rigorous and rigorous back to simple, and view operation warnings for all

models in your flowsheet (Figure 9).

All of the columns in this table can be sorted ascending or descending. The last three columns can also be filtered. This

allows you the flexibility to look at all models in a particular flowsheet, sort by model status, look at only heat exchangers

that contain risks, and etc.

Figure 9. The Activated EDR Summary table

Summary Table Organization

Column 1:

Exchanger Name

Displays the title of the unit operation block for that exchanger. If the model is rigorous, this

title will be a link to open the unit operation form.

Column 2:

Subflowsheet:Contains the location of an exchanger if its in a subflowsheet or hierarchy block.

Column 3:

Model Status

Contains a toggle button that displays either the EDR model type or reads Convert for

simple models. Click on this button to go directly to the form that allows you to convert this

exchanger from simple to rigorous or rigorous back to simple.

Column 4:

Operation Risk Status

For rigorous models, a traffic light shows the risk status for the exchanger. Click on the traffic

light to go directly to the EDR risks. Click on the heading of this column to view a summary of

all exchanger risks.



7

Converting Models The conversions supported in Activation are the same as those allowed in previous versions of Aspen Plus. The chart

below in Figure 10 shows the possible conversions between simple unit operations and rigorous EDR models.

Model Types Supported

Rigorous Model Types Supported in Aspen Plus:

Figure 10. Simple to Rigorous Model conversions

Converting a Simple Model to Rigorous EDR

Convert forms for simple models can be accessed from the activated summary table or the Model Status flowsheet

flyovers (Figure 11).

Figure 11. Accessing Convert forms

Click on the Convert button from either of these locations to begin model conversion. The form shown below will open.

Convert Forms in Aspen Plus

HeatX models can be converted to Shell&Tube, AirCooled, and Plate EDR model types (Figure 12).

Aspen Plus Unit Operation Rigorous EDR Model Supported

HeatX

Shell&Tube

AirCooled

Plate


8


Figure 12: Steps to complete Model Conversion

Rigorous to Simple

You can access the form to convert rigorous models back to simple from the activated summary table. Click on a button in

the 3rd column for an EDR model type (Figure 13).

Figure 13. Exchanger Summary Table

2. Select a sizingmethod on the right.For Plate models,interactive sizing isnot supported, onlyEDR file imports.

3. Click the Convertbutton to continue.

1. Select a model type.



9

When you click on this button, instructions for the particular model will appear. Read the steps to achieve the conversion.

Then click on the Convert button (Figure 14) to go to the forms where those steps can be completed.

Figure 14. Convert to Simple Dialogue

Figure 15. Convert to Simple

Worldwide Headquarters

Aspen Technology, Inc.200 Wheeler RoadBurlington, MA 01803United States

phone: +17812216400fax: [email protected]

Regional Headquarters

Houston, TX | USAphone: +12815841000

So Paulo | Brazilphone: +551134436261

Reading | United Kingdomphone: +44(0)1189226400

Singapore | Republic of Singaporephone: +6563953900

Manama | Bahrainphone: +97317503000

For a complete list of offices, please visit www.aspentech.com/locations

2013 Aspen Technology, Inc. AspenTech, aspenONE, the Aspen leaf logo, the aspenONE logo, and OPTIMIZE are trademarks of AspenTechnology, Inc. All rights reserved. 11-4606-1113

About AspenTech

AspenTech is a leading supplier of software that optimizes process manufacturingfor energy, chemicals,

engineering and construction, and other industries that manufacture and produce products from a

chemical process. With integrated aspenONE solutions, process manufacturers can implement best

practices for optimizing their engineering, manufacturing, and supply chain operations. As a result,

AspenTech customers are better able to increase capacity, improve margins, reduce costs, and become

more energy efficient. To see how the worlds leading process manufacturers rely on AspenTech to

achieve their operational excellence goals, visit www.aspentech.com.

Additional ResourcesPublic Website:

www.aspentech.com/products/activation

Aspen Online Training:

www.aspentech.com/products/aspen-online-training

On Demand Short Presentations:

www.brainshark.com/aspentech1/activated-edr

Aspen YouTube Channel:

www.youtube.com/user/aspentechnologyinc

Jump Start Tutorial Series:

www.aspentech.com/Activated_EDR_HYSYS_V84.pdf

Activated Exchanger Design & Rating Aspen 8.4

Documents

Transcript of Activated Exchanger Design & Rating Aspen 8.4