8/11/2019 Manual Entry of Properties for 2-Phase VL Mixtures With Aspen EDR

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2011 Aspen Technology, Inc. All rights reserved

Steve Noe, Industry Marketing

September 18, 2014

Aspen Exchanger Design &Rating (EDR)

Tutorial Manual Entry of Properties for2-Phase VL Applications

8/11/2019 Manual Entry of Properties for 2-Phase VL Mixtures With Aspen EDR

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Property Data - Step by Step Guide

1. Complete the Process Data Section

2. Complete the Hot/Cold Stream Compositions Section

3. Complete the Hot/Cold Stream Sections

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Property Data Completing the Process DataSection

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Property Data Complete the Hot/ColdStream Compositions Section

1. Select the User specified properties fromthe Physical PropertyPackagepull down:

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Property Data Complete the Hot/ColdStream Compositions Section

1. The program will run with a

single pressure level.

2. A higher degree of accuracywill be achieved whenentering an inlet and outletpressure for 2-phase

applications.

3. In high vacuum situationsadditional pressures willimprove the programsaccuracy.

4. Click the Add set button toadd additional pressurelevels

5. Copy/Paste from Microsoft

Excel is supported

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Property Data Complete the Hot/ColdStream Compositions Section

1. Enter your temperature points

a) A minimum of two are required andmust include the saturationtemperature

b) A higher degree of accuracy will beachieved by specifying multipletemperatures spanning the operatingtemperatures

c) The program will interpolate betweentemperatures for missing propertypoints

2. Condensing applications will require allliquid and vapor properties shown in theproperty table with the followingexceptions:

a) MW liquid and vaporestimated

when not entered

b) Surface tension estimated when notentered

3. Properties must be supplied for allpressure levels

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Property Data Complete the Hot/ColdStream Compositions Section

1. Boiling applications willrequire all liquid and vaporproperties shown in theproperty table with thefollowing exceptions:

a) MW liquid and vapor

estimated

b) Surface tension estimated

c) The boiling coefficient canbe highly dependent onaccurate surface tension. It

should be entered whenknown.

2. Properties must be suppliedfor all pressure levels