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This function lets the user to perform a flash calculations at fixed pressure & enthalpy (isenthalpic flash).
Note: The best way to use this function is to use the wizard. Select: VLXE/Wizard on the menu
Input
Argument
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Type
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Optional
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Description
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Feed
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Range of double
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No
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A range of cells with the feed
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Pressure
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C# : double
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No
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Pressure, default unit: Bar
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Enthalpy
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C# : double
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No
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Enthalpy, unit: kJ/kg
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FlashType
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C# : string
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No
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Defines the number of phases to look for. Valid input are:
•Auto: Stops when stability analysis shows that the system is stable •2: Will maximum look for 2 phases •3: Will maximum look for 3 phases |
Output
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C# : string
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No
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Defines the output. See here for more information.
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Components
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C# : string
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No
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Give a list of component names.
Only those components are used in the calculations.
See here for more information
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Units
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C# : string
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No
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Set the units used in this calculation.
See here for more information
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Distribution
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C# : object
(Expect a range of double)
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Yes
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Gives a range with the distribution of the polymer. Can for example be used if 2 flash calculations are liked as 2 separation tanks.
See here for more information
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BlockMassfraction
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C# : object
(Expect a range of double)
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Yes
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Sets the block mass fractions in a co-polymer.
See here for more information
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ProjectSheet
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C#: object
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Yes
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Lets the user set the project sheet to use.
See here for more information
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AdvVLXE
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C# : object
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Yes
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Advanced used. Reserved for use by VLXE.
See here for more information
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AdvUser
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C# : object
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Yes
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Advanced used. Reserved for the user. For example it can be used to force the function update.
See here for more information
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Examples:
Lets do a calculation on a system with three components at 100 bar and -400 kJ/kg. The solvent mass fractions are given in the range: B3:B5
We want temperature and the composition of phase 1 and 2 as the output
=Flash_PH(B3:B5,100, -400, "Auto", "T,C(1),C(2)")
Extra
This function is defined in C# as:
public Object[,] Flash_PH(Range Feed, double Pressure, double Enthalpy, string FlashType, string Output, string Components, string Units, [In, Optional] object Distribution, [In, Optional] object BlockMassfraction, [In, Optional] object AdvVLXE, [In, Optional] object AdvUser)
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