© 2021 Jasper van Baten, AmsterCHEM

Loading and storing models

You can store an existing Excel CAPE-OPEN Unit Operation model as .xum (Excel Unit-operation Model) file for re-use in another unit operation (which could be running in another simulator). Excel unit operation models contain formulas that likely reference the feed compositions in the feeds sheet. If the context in which you load the model contains a different number of compounds, the formulas referring to feed composition, and other formulas that depend on the amount of compounds in the flowsheet, may require updating.

To store an existing model, edit the unit operation. In Excel, click the Export Export button on the Unit Operation ribbon.

To rea-load a previously stored model,In Excel, click the Import Import button on the Unit Operation ribbon. You will be prompted for the location of the *.xum file.

After restoring a model, and before editing the new model or attempting to run the new model, it is strongly advised to first connect at least one of feed streams to the model, using a stream that has the proper amount of chemical compounds on there. This way, the feed and product sheets are updated to contain the proper amount of compounds, and formula references to feed compositions as well as formulas on the product sheet for the product compositions will not go lost.

Note: when running in COFE, a quicker way to get a second copy of the same unit operation is to use copy and paste in the flowsheet itself.

INDEX
add-In
aggregation state
available properties
capeCompoundConstant
capePropertyUnit
capeFlash
capeFlashedFeed
capeOverallFeedProperty
capeOverallProperty
capePDependentProperty
capeSinglePhaseProperty
capeCompoundNames
compound names
unit of measure
capeStateOfAggregation
capeTDependentProperty
capeTwoPhaseProperty
capeUnitOperationName
compound constants
control sheet
defined phases
Disclaimer
equilibrium calculations
examples
Excel solver
Export Model
feeds
flash calculations
getting started
Import Model
input parameters
Loading and storing models
macros
output parameters
overall properties
parameters
ports
pressure dependent properties
products
property calculations
quick reference
reports
requirements
run-time error
security
single phase properties
solver
state of aggregation
streams
temperature dependent properties
thermodynamic equilibrium calculations
thermodynamic property calculations
two-phase properties
unit operation name
Update links
validation
VBA
welcome
CONTENT
 Introduction
 Ports and streams
 Parameters
 Function reference
 The control sheet
 Using the Excel solver
 Using Macros
 Loading and storing models
 Persistence in AspenPlus
 Examples
 Disclaimer