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Below is given a brief version history of VLXE for Excel.
Version 2.3
2 June 2008
| • | Project sheet is now version 11. Units are removed and the sheet is prepared for CPA and simplified PC-SAFT |
| • | All function has the arguments Components and Units as non-optional. |
| • | A new optional argument was added to all functions: ProjectSheet. This allows the user to set what project sheet is to be used in the calculation. |
| • | User can now work with multi project sheets. |
Version 2.2
25 Apr 2008
| • | Updated the SDK so solubility parameters can be returned |
| • | Updated the SDK so a new faster FlashFlow function is available. It uses the last result to improve the speed. It is to be used in flowsimulators. |
| • | Excel 2007 are now supported. |
| • | A beta version of the new database format is made available. |
Version 2.1
24 Mar 2008
| • | Updated databases to version 11. Change is that DDBST database index is now supported for standard, polymer and copolymer components |
| • | Added 2 new functions: APIGravity and GOR. These are common Oil and gas calculations and are now very easy to perform |
| • | Added a new menu: "Quick Calc" It lets the user create the most common calculations with just one click. |
| • | Added a new License menu where the user can use a wizard to setup a license, check a license and generate a locking code. |
| • | Improved the fitting routine for viscosity. User can now select between 3 options. |
| • | Improved the output in the characterization fitting wizard. |
| • | Updated the function argument: "Distribution" so if offers full flexibility. |
| • | Beta version of the new database format (DIPPR based) and interface is included. |
Version 2.0
26 Feb 2008
| • | Improved the error handling to more information is provided |
Version 1.9
11 Jan 2008
| • | New unit: Psig was added to pressure. |
| • | New unit: Moleprocent was added to composition |
| • | New unit: Massprocent was added to composition |
| • | Critical volume is now loaded from the database |
| • | PhaseEnvelopeAuto now works with units Psi |
| • | Characterization module was given a major update |
Version 1.8
10 Dec 2007
| • | A new wizard: "Output" has been added. It helps the user change the output argument that most functions has. |
| • | The default model for surface tension is now "Linear gradient theory (LGT)" for polymer systems and "Gradient theory (GT)" for non-polymer systems. |
| • | New unit for Enthalpy: kJ/kMol has been added |
| • | New unit for Entropy: kJ/(kMol Kelvin) has been added |
| • | The content of the Oil and Gas help file was merged with this help file |
| • | The version of the project sheet is now 10. The change is the Kz and Parachor parameter for standard components. |
| • | The functions in the VLXE.OilAndGas namespace has all been moved to the VLXE.Functions namespace. |
Version 1.7
24 Oct 2007
| • | First public version of the oil and gas module. The viscosity and characterization wizard is now running. |
| • | The surface tension module for polymers is now in a release state. |
| • | A preview of the new SQL server 2005 version of the databases based on DIPPR is now available for selected test users |
Version 1.6
20 Sep 2007
| • | Internal version used to test the new oil and gas module |
Version 1.5
5 Sep 2007
| • | A updated version of the surface tension code has been included. |
| • | 3 new functions that lets the user access the chemical potentials + there derivatives has been added |
| • | The format of the unit string has been changed to make the string shorter. This is due to a problem in Excel when the user wants the copy a sheet, Excel does not copy any content above 256 characters |
| • | The function: TracePropertyLine has been updated to allow the user to select the type of starting point. The user can now select between Feed, Flash, CloudT or CloudP. Existing code needs to be updated in order to use the new functions since the argument list has been changed. |
| • | The function: PhaseEnvelope has been updated to simplify the argument list. Existing code needs to be updated in order to use the new functions since the argument list has been changed. |
| • | This documentation has been updated. More updating is coming. |
| • | A new wizard has been added called: Distribution it handles calculations that does not need a project sheet like distribution and SEC |
| • | The in and output from the function: SEC has been updated so it is clear that log10 is used. The argument list has been updated so the user does no longer have to give Mn, Mw and Mz. |
| • | The wizard list in the menubar inside Excel has been collected in a drop-down component to give a simpler interface |
| • | The first public beta of the new Oil and Gas module is now included. Note that this is a very early beta and is therefore not useful to the general user. |
| • | The version of the project sheet is now 8. The change is due to the new oil and gas module. |
Version 1.4 13 Aug 2007
| • | The version of the project sheet is now 7. The only change from version 6 is the addition of the temperature dependent lij for the surface tension. |
| • | A second beta version of the gradient and the linear gradient theory is included. |
Version 1.3 19 June 2007
| • | In the fitting routine a extra column is needed for the cloud point data giving the type of point. The type can be Auto, LLE or VLE. This lets the user fit Kij to LLE data beside VLE data. |
| • | A beta version of the linear gradient theory is now included. |
Version 1.2 13 June 2007
| • | The use of the environmental variable LSFORCEHOST has been replace by a register entry to avoid a Aspen conflict. |
| • | A bug in the layout of the project sheet for Sanchez/Lacombe has been fixed. |
| • | The version of the project sheet has been upgraded to version 6 to account for parameters used by surface tension and viscosity calculations |
Version 1.1 14 May 2007
| • | The polymer distribution function argument can now take 2 column input (M, mass fraction). |
| • | Some output types has been added to Txy and Pxy |
| • | The block mass fraction for copolymers are now a optional argument |
| • | A improved wizard that also handle unit and component selection is included |
Version 1.0 25 April 2007
| • | Version 1.0 of the software |
| • | Function interface is now fixed |
| • | User can set units through a Unit argument |
| • | User can pick components to include in the calculations |
Version 0.9 (Pre-release) 3 April 2007
| • | Last version before version 1.0 is released. |
| • | Last chance for user feedback to affect the function interface (argument list) |
| • | New functions have been added that lets the user obtain properties from the used equation of state like volume, Helmholtz energy and fugacity coefficients. |
Version Beta 4.0 March 2007
| • | All calculations from the stand alone version of VLXE is now included. 32 different functions are available in the add-in. |
| • | Several new units for composition were added, e.g. kg/hour, kmol/hour |
| • | New units for enthalpy and entropy were added. |
| • | Databases are now part of the install package |
Version Beta 3.0 March 2007
Version Beta 2.0 February 2007
| • | All 4 SLE calculations were added |
| • | Critical point were added |
| • | Units names were updated to Molefraction and Massfraction |
Version Beta 1.0 January 2007
| • | Flash and bubble/dew point function were included |
| • | Databases can be called using the old code. |
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