Aspen Touch Solutions ATM-123R Series Especificações descarregar pdf (Página 60)

2-46 Key HYSYS Objects

2-46

ColumnOp & ColumnFlowsheet

The column operation is a special kind of operation in HYSYS

and actually contains its own flowsheet. The ColumnFlowsheet is

accessed either from the Columnop object or as a member of

the flowsheets object accessed through the main flowsheet. In

order to access the various temperatures, pressures, and

specifications for a column the ColumnFlowsheet must be

accessed.

The ColumnFlowsheet object contains a considerable amount of

information regarding the column. A variant is used to receive

an array of column pressure information and displays a stage by

stage breakdown of the pressure values.

ColumnSpecification(s)

A column is solved based on matching specifications related to

the available degrees of freedom. The ColumnSpecifications

collection object is accessed through the ColumnFlowsheet. The

ColumnSpecification contains information such as the goal

Syntax: Accessing Columns

Set objColumn = SimulationCase.Flowsheet.Operations(“ColumnOp”).Item(0)

Set objColumnSubFlow = objColumn.ColumnFlowsheet

Example: Column Operation

Dim hyColumn As ColumnOp

Dim hyColumnSubFlowsheet As ColumnFlowsheet

Dim Pressure_Profile As Variant

Set hyColumn = hyCase.Flowsheet.Operations(“ColumnOp”).Item(0)

Set hyColumnSubFlowsheet = hyColumn.ColumnFlowsheet

Pressure_Profile = hyColumnSubFlowsheet.Pressures

For i = 0 To UBound(Pressure_Profile)

MsgBox “Stage “ & i + 1 & “ pressure = “ & Pressure_Profile(i)

Next i

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Aspen Touch Solutions ATM-123R Series Especificações Página 60