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Problem Statement: I am using Aspen Utilities Planner (AUP) 2006.5. When I double-click on any model, I get an error saying *.auf file can not be found. If I click OK, it opens AUP 2006.5, but without a model. If I then go to File|Open, the browser is looking for files of type *.dtl. This should be files of type *.auf.... | Solution: This problem is related to .auf file association and can be fixed by the following procedure:
1. In Windows Explorer select Tools-Folder Options?
2. Click the File Types tab and scroll down to the AUF entry:
3. Click the Advanced button:
4. Click Edit? and make changes to lo... |
Problem Statement: How to define fuel composition in FeedFuel block in Aspen Utilities Planner V8.0 ? | Solution: Feed composition can be specified in Feedfuel block in Aspen Utilities V8.0, which enables user to calculate the required fuel properties such as molecular weight (MWout), lower heating value (CVout) and oxygen demand (OD).
To specify fuel composition,
1. Add a feedfuel block in the flowsheet
2. Dou... |
Problem Statement: OLE Automation access to LNG curves (including Hot Composite Curve) | Solution: The LNG Exchanger operation (Object type LNGOp) has a Curves collection that allows access to HeatExchangerCurve objects for each of the sides of the exchanger, and a CompositeCurve property that gives access to the composite curve. However, in the current version of HYSYS the CompositeCurve property only giv... |
Problem Statement: How can I adjust air flow rate to meet desired value? | Solution: In order to vary the flowrate of air in a stream, the air multiplier block provides a quick and simple mechanism for augmenting or decreasing the flowrate of air in a stream by a fixed factor, which is shown as below:
By introducing a fixed factor Multiplier, which in this case is set to 0.9, you can se... |
Problem Statement: How do I choose the correct step size when running Aspen HYSYS Dynamics? | Solution: The step size is the time that passes before Aspen HYSYS calls a new calculation pass. Users are usually recommended to use the default of 0.5 sec. Generally speaking, reducing the step-size improves the accuracy. Aspen HYSYS solves equations using the fully implicit Euler integration method. The use of a sma... |
Problem Statement: How does a company rapidly deploy AspenTech's Process Engineering Tools across their enterprise without lengthy scripting and install procedure effort? | Solution: BASF's IT Group has developed an innovative approach, based on Microsoft's SoftGrid technology, to rapidly deploy AspenTech's Process Engineering Tools across their enterprise without lengthy scripting and install procedure effort. The software resides on a dedicated server, and users are able to access the A... |
Problem Statement: Assume that you have some thermal conductivity data from other sources for an equal volume mixture of EG and water and would like to use them to replace the values generated from the default correlations in HYSYS. | Solution: The properties such as viscosity and thermal conductivity are calculated in HYSYS using default correlations that are independent of the property package used for the simulation. If you find the values of such properties reported in HYSYS are not good enough for your simulation and would like to replace them ... |
Problem Statement: How do I model a valve that opens linearly between two values of a process variable? | Solution: When modelling a system with pumps or compressors in Aspen HYSYS Dynamics, a surge control scheme could be used to protect pressure units under extreme flow conditions. Sometimes, however, it is desirable to manipulate a valve opening according to a specific range for a given process variable. To this end, a ... |
Problem Statement: Why there is a temperature rise when the pump efficiency is specified as 100%? | Solution: The pump calculation used within Aspen HYSYS assumes that the process fluid is incompressible (i.e. there is no change in the fluid density across the pump). In reality, there is a measurable change in density that occurs as the pressure increases, which results in the predicted temperature deviation. Consequ... |
Problem Statement: Dynamic | Solution: In the attached HYSYS 3.0.1 case the mixer operation has a User Variable (Steady State and Dynamic) that creates a reference stream based on the mixer product stream. The reference steam is named [Stream Name]_
Keywords: Dynamic User Variable,
References: Stream User Variable |
Problem Statement: When opening Aspen HYSYS, the following message appears: Can not create Comsel.idx file ... | Solution: This error appears to be related to the read and write access to the computer where Aspen HYSYS is installed.
The suggestedSolution is to obtain full read and write permission to the drive Aspen HYSYS is installed. Once Aspen HYSYS has been run successfully the first time, the comsel file will be created and ... |
Problem Statement: Care using ActiveCase.FlowSheet... in User Variables | Solution: When referring to other objects on the same flowsheet as the stream / operation with the user variable, it is tempting to use (for example):
Dim mySprd As HYSYS.SpreadsheetOp
Set mySprd = ActiveCase.Flowsheet.Operations.Item(MySprdSheet)
However if the object the user variable is running from, is in a sub flo... |
Problem Statement: User wants to display the results of the calculations within the User Unit Operation (UUO) model in a read only manner. | Solution: In order to display the user variable in a read only manner the Calculate only box located in Security tab has to be checked.
To activate the Calculate Only method the “Trigger Solver” box located in Attributes tab has to be checked.
Keywords: User Variable, Read only, Calculate only, Calculate method
Referen... |
Problem Statement: Assume that you have some thermal conductivity data from other sources for an equal volume mixture of EG and water and would like to use them to replace the values generated from the default correlations in HYSYS. | Solution: The properties such as viscosity and thermal conductivity are calculated in HYSYS using default correlations that are independent of the property package used for the simulation. If you find the values of such properties reported in HYSYS are not good enough for your simulation and would like to replace them ... |
Problem Statement: We are using Aspen Properties Toolkit to access Aspen Properties. It requires an Aspen Properties License to run but after we are done using Aspen Properties we want to release the license without having to wait the 5 minutes for it to be returned. Is there a way to release the Properties License usi... | Solution: To return the license, use PPEXEC_APCLOSE to close the current Process Definition File.
     CALL APCLOSE(CALL_RTLAYL, CALL_SELF_EXIT)
Where
CALL_RTLAYL is an integer and should be set to 1 to detach from the license manager.
and
CALL_SELF_EXIT is an integer and should be set to 0. CALL_SELF_EXIT se... |
Problem Statement: What is NBOPST? | Solution: NBOPST is the bead vector for the property methods used. It is used in many user subroutine calls.
The Aspen Properties Toolkit
Keywords: nbopst
subroutine
fortran
References: Manual p.3-24 has a description of NBOPST:
One of the arguments to the Aspen Properties monitors and flash utility is NBOPST, the prop... |
Problem Statement: You do not have permission to view databank content in this database using Aspen Properties Database Manager.
You may also see a launch error from the application (ie., Aspen HYSYS) using the databank: ”Some of the registered APED databases are not accessible. You can ignore this message if you are... | Solution: This issue could occur if the custom database has Extra Security, which verifies the Security String name with the Company Name on the license file, and it does not match.
Steps to view the Database Security String using the Aspen Properties Database Manager
1. Launch the Aspen Properties Database Man... |
Problem Statement: Why, when I try to register an extension do I get the message Error-DLL function DllRegisterServer failed (Error -2147467259)? | Solution: When HYSYS registers an extension, it needs to make some changes to the system registry. On Windows NT, 2000, and XP machines you require Administrator privileges in order to make registry changes.
Hence if you receive this message you will need to ask your IT support group to allow you administrator privileg... |
Problem Statement: The pressure profile of a column (top and bottom pressure) must be specified by the user. Usually, those values are specified using the Input Experts and they can be changed in the Design tab, Connections page of the column view. In some cases, those pressure specifications should be changed due to p... | Solution: Differently than other operations in Hysys, it is not possible to specify the product streams of a column and expect that Hysys will calculate the feed streams. However, the pressure specification doesn't follow this rule and it is possible to specify the pressure of top and bottom streams and Hysys will use ... |
Problem Statement: Experimental data set has been used in a Data Regression (DRS) case. Once the DRS has been run and results obtained, I would like to get a plot which includes both the experimental data and the property/parameter for which the DRS has regressed its elements. | Solution: In order get the plot which includes the experimental data and the property affected by the DRS. Switch from Data Regression mode to Property Analysis mode. At this point there are two options to run the Analysis:
- Interactive Property Analysis. It is found on the Home ribbon in the Properties environm... |
Problem Statement: How do I resolve Error 1311 in Aspen HYSYS when clicking on the Aspen Basic Engineering (64-bit) drawing editor?
Error 1311: Source file not found.
Aspen HYSYS was installed from a web download link running on Windows 7 and the ASW was not installed. Aspen HYSYS connected to Aspen Basic Engineering (... | Solution: The knowledge base describes how to fix the 1311 error message. Error 1311 occurred because an Emergency Patch (EP) was installed without first installing the cumulative patch (CP). Please follow the installation steps to properly install the patches below:
1. From add/removed program, uninstall H... |
Problem Statement: What is the optional checkbox for ‘Use Ft’ which appears when modelling Heat Exchanger End Point Model.
Design--> Parameters--> End Point Model | Solution: Aspen Hysys Heat Exchanger Design (End Point Model) solves with the equation
Q = UA * Ft * LMTD
where
Q = duty
UA = overall heat transfer coefficient times area
Ft = Ft correction factor
LMTD = Log Mean Temperature Difference.
The Ft correction factor is the log Mean temperature difference correction factor a... |
Problem Statement: Why it is not easy to replace the Aspen HYSYS PFD icon with my custom icon? | Solution: It is difficult to replace the Aspen HYSYS PFD icon with the custom icon because the PFD icons in Aspen HYSYS interact with other PFD objects (i.e. streams). As the custom icons are just an image (and not programmed for interaction with other objects) custom icons generated by the user are unable to interact ... |
Problem Statement: What is the Master Component List and what is it used for? | Solution: The Component Manager always contains a Master Component List that cannot be deleted. The Master Component List contains every component that has been added to all component lists in a HYSYS case. When you add components to any component list, they are automatically added to the Master Component List. Also, i... |
Problem Statement: Which Correlation Method is being used in the Pipe Sizing Utility? | Solution: The Gregory-Aziz-Mandhane correlation method (horizontal pipes only) is being used in the Aspen HYSYS Pipe Sizing Utility. Please refer to the Aspen HYSYS Operations Guide section 5.2 for flow maps.
Keywords: Pipe Sizing utility; correlation
References: None |
Problem Statement: What is a temperature cross? How can I get rid of a temperature cross error in a heat exchanger? | Solution: A temperature cross occurs when the cold side of the exchanger becomes warmer than the hot side of the exchanger, thereby causing heat to flow from the cooler fluid to the warmer fluid. Graphically, the temperature cross can be seen on the Performance | Plots page of the heat exchanger view. If you create a H... |
Problem Statement: What tolerances does the Recycle operation use when it is connected to Energy streams? | Solution: When connected to energy streams, the Recycle operation uses an absolute internal tolerance of 0.1 kW. (NOTE: kW is the HYSYS internal unit for energy). The tolerance sensitivity multiplier used is Enthalpy.
Hence, for the default sensitivity of 10 the overall tolerance used is 1 kW (i.e. 10 x 0.1). So the re... |
Problem Statement: What is auto-connect mode on the PFD and why would I use it? | Solution: This mode in the PFD, introduced with HYSYS 3.0, will significantly increase the speed of building HYSYS models.
In Auto Connect mode, when Unit Operations are installed in the Flowsheet, the Inlet and Outlet streams are automatically attached.
By selecting a stream in the flowsheet and then adding a new oper... |
Problem Statement: Can I set up spreadsheet imports and exports via Automation? | Solution: Yes, the attached VBA code example will add a spreadsheet to the currently open case then set up an import of the temperature of stream 1 into cell A1. It then writes a formula into B1 such that B1 = A1 + 10, and exports this to the temperature of stream 2. [Make sure that stream 2 doesn't already have a spec... |
Problem Statement: What are the steps required to create a user variable in Aspen HYSYS? | Solution: In this example, the basic steps required to create a user variable in Aspen HYSYS are outlined:
1) set user variable name and attributes
2) select appropriate VB subroutine
3) enter key coding elements in Visual Basic (VB) subroutine
Load the attached case uservartemp.hsc in HYSYS and open property view for ... |
Problem Statement: It may sometimes be required to obtain the solubility of a compound in different solvents based on the property parameters retrieved from the property data base. This means that experimental data to carry out regressions may not be available. This technical tip document describes the procedure to car... | Solution: Since there is no data for regression, then the Excel file Regression.xls will not be required and the Calculation.xls will be used for this task. The following steps are required for this purpose (administrative rights will be required for the following modifications):
1. Delete nrtl-sac_130_solvents_43_... |
Problem Statement: Is it possible to create performance curves for different inlet guide vane positions for an expander? | Solution: New in Aspen HYSYS 2006.5, separate performance curves can be entered for each inlet guide vane (IGV) position for the expander operation. This functionality is similar to that available in the compressor operation in previous versions of Aspen HYSYS.
Keywords: expander, inlet, guide, vane, IGV, position, cur... |
Problem Statement: How can I rename the new hypothetical I added (the default name is in black, not red)? | Solution: This happens when you add a new hypothetical component to a pre-existing group of hypotheticals created using the oil manager.
To avoid this problem: first add a new hypothetical group, then add a new hypothetical component to that. You should then be able to change the new hypothetical's name.
Keywords: Hypo... |
Problem Statement: Stream properties are left blank or show <empty> when queried in simluation. | Solution: Install the MSXML parser. It can be obtained from 'http://www.topxml.com/parsers/#Microsoft%20Parsers' or from 'Support.Microsoft.com'
Make sure the following files are installed and registered in the folder C:\Program Files\Common Files\Hyprotech:
datasvr.dll
corrman.dll
hyphys.dll
dataview.ocx
userproperty... |
Problem Statement: How are slug flow properties calculated in the HYSYS pipe segment? | Solution: See the attached documents for a detailed explaination on how slug flow properties are calculated in the HYSYS pipe segment.
Note: There are two places you can view the flow regime.
a. On the Performance Tab (of Pipe) ll Slug Results page ll Status column
b. On the Performance Tab (of Pipe) ll Profiles Page l... |
Problem Statement: I selected Show sub-Flowsheet Objects, how do I hide them again? | Solution: The Show sub-FlowSheet Objects command displays all sub-flowsheet objects (streams, unit operations, tables, text etc.) onto the Main Flowsheet PFD. In this way, all sub-flowsheet streams and operations can now be viewed and accessed from the main PFD without entering the sub-flowsheet environment. To hide su... |
Problem Statement: How do I show stream / operation tables on the PFD? | Solution: On the PFD Right click (Object Inspect) on the object (stream / operation) of interest then choose the 'Show Table' menu entry. This will place a table on the PFD somewhere near the object.
The table contains a set of default properties. By double clicking on the PFD table another window appears where the pro... |
Problem Statement: How do I do a depressurization model of a vessel or pipe line that has a leak in it? | Solution: To model a leak, you will want to use the General (Choked Flow) valve equation, and specify the Av coefficient, which is the orifice area (leak area). When using SI units, the Av is in m^2 and for Field units, Av is in ft^2.
Do not forget to use an appropriate Isentropic Efficiency value: for liquid filled sy... |
Problem Statement: Customer gets the following error when he attempts to run Aspen FCC 11.1:
Error in ConnectServer(), module
Com2Dcom. Error message:Unable to
load simulation engine. License check
out error.
Cause:
The Aspen Plus license was not found when attempting to connect to an Aspen RXfinery flowsheet. | Solution: Check to make sure that the license server or the license file has been selected properly. See the Licensing section on page 2-8 of the installation manual for more information.
Check to make sure that the licenses for Aspen Plus, Aspen Plus EO Optimizer, and the Aspen RXfinery application licenses have been... |
Problem Statement: Automation example - Produce a list of all HYSYS units and unit types in Excel | Solution: The attached Excel spreadsheet displays the units in the currently open HYSYS case. It has two modes
All Details: Lists All possible units for each of the variable types, along with conversion factors from HYSYS internal calculation units
Just Display units: Lists only the units currently being used in HYSYS
... |
Problem Statement: The Aspen Utilities product can't be found on the AspenOne 2004 Update 1or on the aspenONE 2006 installation DVDs | Solution: Normally, the engineering suite products can be found on DVD#6. There were some delays and Aspen Utilities was not included on the aspenONE 2004 update 1 and 2006 installation DVD's.
Currently, the latest version of Aspen Utilities is available on the aspenONE 2004 Update 2 installation DVD's on DVD #6. In th... |
Problem Statement: The scoop on tray efficiency. | Solution: This article is intended to shed some light on tray efficiency and how to account for it in your model. It clarifies the different methods used for accounting for efficiency, their corresponding characteristics and their effect on the simulation model accuracy.
Keywords: column, tray, efficiency, murphree, am... |
Problem Statement: I just received my HYSYS 3.1 package. How do I install it? | Solution: The HYSYS 'Get Started' guide will outline the different installation and licensing options available to you. The HYSYS 'Get Started' guide is located on the Root of the HYSYS 3.1 products CD.
Keywords: HYSYS 3.1; Installation; Standalone; Network
References: None |
Problem Statement: How to find a reference citation for the pure and binary parameters that can be retrieved in Aspen Plus / Properties and NIST database? | Solution: There are two ways to retrieve the citations for pure components and binary parameters from the Aspen Physical Properties Databases.
1) From Aspen Properties Database Manager
· From the desktop click Start | All Programs | AspenTech | Process Modelling V8.6 |Aspen Properties and launch Aspen P... |
Problem Statement: When you use the Generate Data option in Data Regression to generate for example TPXY data, the generated data does not show up on the Data sheet in the Properties | Data form. | Solution: The Generated Data is created during the Data Regression run; therefore, it cannot be displayed in the Data sheet Input form. Simply run the Data Regression case and review the results.
Keywords: Data Regression
Generate Data
Aspen Plus
Aspen Properties
References: None |
Problem Statement: How do I use OLE to attach multiple feed and product streams to unit operations which can accept them (such as the tee, balance, separator, etc.)? | Solution: The Add method of the Feeds Collection is used to add multiple feed streams to a unit operation object one at a time. For example, if hyMix refers to a Mixer unit operation object and hyFeed1 and hyFeed2 refer to material stream objects, the following syntax would add the material streams as feeds to the mixe... |
Problem Statement: The FRI tray rating utility allows only Sieve trays; how can I choose a different kind? | Solution: While the FRI Tray Rating utility allows for an FRI sieve tray only, the Tray Sizing utility allows for several different types of internals (i.e. sieve, valve, packed, bubble cap, chimney and sump).
Keywords: Internals, tray type, sieve, valve, packed, bubble cap, chimney, sump, tray rating, tray sizing, uti... |
Problem Statement: Is it possible to copy a spreadsheet operation from one case to another? | Solution: Although the operation itself can be copied, all logical connections will be lost when the spreadsheet is pasted into a new case, unless the referenced objects are also copied into the same case. Otherwise, since Aspen HYSYS does not use object names to reference the spreadsheet connections, only the original... |
Problem Statement: This knowledge base article provides an overview of FIXA option in CMAN table. | Solution: FIXA is a Plant Scheduler simulator option found in CMAN (FIXA) .It can be set to YES or NO. When set toYES, the simulator does not move fixed activities. An activity is known to be fixed if its hierarchy level in MAKI (LEV) is greater than the fixed level in HIER (FIX, LEV).
As an example, on the plannin... |
Problem Statement: Why does the status bar on the Deposition | Methods page of my pipe segment indicate Not Calculated? | Solution: As in the figure at the bottom of thisSolution document, the status bar on the Deposition | Methods page the pipe segment may indicate Not Calculated for a variety of reasons:
1. The stream or associated pipe segment does not have enough information to run.
2. The ProFES wax calculation method does not have... |
Problem Statement: When one opens and runs the Regression.xls (Solubility Modeler Analysis) file from a folder which contains also the Calculation.xls file could create some conflicts on the modified NRTL-SAC_130_Solvents_43_Excipients.aprbkp (Aspen Properties file) generated. Usually, when you use firstly the Regressi... | Solution: In order to use the Calculation.xls and Regression.xls files, since these cannot be used within the same folder and using the same Aspen Properties file, one should copy the Aspen Properties file and paste it in a different folder with one of the respective Microsoft Excel file. For instance:
1. Create a ... |
Problem Statement: There is a way to copy data from tables. This | Solution: answers if there is a way to copy graphs/charts.
Solution
Let's take a standard screen which has a graph. The chart below is the Projected Inventory screen from the Plant Scheduler CAP (demo) model:
If you right click on the graph, you would find an option called “Copy”. Once you click this option, you woul... |
Problem Statement: There are multiple number of filters that one could use in SCM - column filters, advanced filters, value filters, text filters and global filters. When you create your own XML screen (without making use of the Data Viewers or Set Viewers), this | Solution: explains how you could add a column filter to the tables. This also explains how to add column sorting.
ThisSolution is written for SCM Modelers with basic knowledge of XML.
Solution
Let's consider a screen with nothing but just a table:
The following would be the XML code for this screen to display the tab... |
Problem Statement: The following | Solution: answers the question if there is a way to minimize the ribbon through a keyboard shortcut. There is a way to minimize the ribbon by clicking on the arrow icon on the right hand top corner.
Solution
The answer to this question is yes. The shortcut to use is Ctrl + F1.
Keywords: Ribbon
Keyboard Shortcut
Referen... |
Problem Statement: Cape-Open Unit 1.1 Operations is not listed under Available Unit Operations. How to fix it?
I get a message: The component 'ExcelUnit.UnitOperation.1' implements version '1.1'?. Please consult support for an upgrade of the CAPE-OPEN kit.
I have CAPE-OPEN 1.1 listed under thermo but I can not open an ... | Solution: Both Cape-Open Unit 1.0 and 1.1 Operations are supposed to get installed automatically. If you have 1.1 missing in the available unit operations list (even if Cape-Open thermo is available) please make sure you have the corresponding dll and edf files and then register the dll file.
Please go to C:\Program Fi... |
Problem Statement: Basic XML knowledge in Aspen SCM is a prerequisite for reading this document. | Solution: s # 135832, 135995, 136528, 136585, 137107 and 138030 are recommended, if you are looking to gain basic XML knowledge in Aspen SCM.
When colors are used to differentiate data in a table, it is often to provide the color controls to the user. ThisSolution explains how to add a color picker utility to a XML s... |
Problem Statement: How do you calculate chemical activities with Aspen Properties? | Solution: Attached is an example which shows how to calculate chemical activities with Aspen Properties using Excel functions available in the Aspen Properties add-in for Excel. Note: These files were produced using Aspen Properties 2006 and Excel XP. This application will not run in earlier versions of Aspen Propertie... |
Problem Statement: When a quoted cost item is entered, Aspen Icarus Process Evaluator (IPE) escalates the Adjusted Total Project Cost (cell C190 on projsum.ics) from the date of the cost engine (1Q98 for versions 5.0 and 5.1) as it does for all generated costs. This presents a problem since most quoted costs are entere... | Solution: In IPE, escalation is calculated simply, using a formula similar to the following: X = A(1 + RN)
where X = total cost, including escalation
A = 1Q98 base cost
R = rate of escalation per period (as shown in field C132 of ProjSum.ics) N = number of periods from 1Q98 to the Start Date of Basic Engineering
So to ... |
Problem Statement: How is the controlling product defined in Aspen Fleet Optimizer? | Solution: Within a given shipment, there can be more than one product to be delivered. A controlling product is a product that will run out first in a given shipment. In the detail window, the row that shows the controlling product of the shipment will be highlighted in red. This feature works only with a forecasted cu... |
Problem Statement: Can I merge two component lists into one? | Solution: If you are trying to take oil hypotheticals or a group of hypotheticals from one list to another, there is a shortcut. Select the component list (where you want to add) || View || Hypothetical || select a Hypothetical Group (for oil it's a blend) || then click on Add Group.
There is no shortcut option to comb... |
Problem Statement: In the Twu options for PR and SRK. What does the option Water Gas Kij do? | Solution: Water in gas calculations refer to the special temperature dependant Kijs fitted for water - Argon, C1, C2, C3, H2, N2, and CO for the liquid and vapor phase Kijs.
Keywords: Water Gas, Twu, PR, SRK, Kij
References: None |
Problem Statement: What are the Internet Information Services (IIS) requirements or Aspen Properties Web Interface? | Solution: The Aspen Properties Web Interface was developed and tested in IIS version 5 only. Therefore, this is the only version of IIS that is currently supported.
Note: As documented in the What's New for V7.3.2 release notes, Aspen Properties Web Interface will be discontinued in the next version. User are recomme... |
Problem Statement: After migrating to a newer version of Aspen Properties, the Excel interface stops working or it complains about a version incompatibility. | Solution: This problem has been reported for users migrating from Version 11.1 to 12.1, and also by users migrating from 12.1 to version 2004. The source of the problem is that Excel does not forget the ealier version's Aspen Properties Add-in file. Please follow the below steps to force Excel to use the newer version ... |
Problem Statement: How do you set global defaults for Aspen Properties Mobile? | Solution: After installing the Aspen Properties Mobile application on your mobile device you can configure the default options through the Apple Settings application. Go into Settings, scroll down to the Aspen icon labeled Properties, and tap the icon or label to open the configuration screen.
Go to the Server Connecti... |
Problem Statement: Is it possible to generate an Aspen Properties .aprbkp file from an Aspen .bkp file? | Solution: There are two ways to open an Aspen Properties *.aprbkp file in Aspen Plus:
Rename the file to have an .aprbkp extension and simply open it in Aspen Properties.
Import the .bkp file into Aspen Properties and Save as a .aprbkp.
The flowsheet will be ignored.
To open an Aspen Properties .aprbkp file into Aspe... |
Problem Statement: Can Aspen HYSYS calculate electrical conductivity? | Solution: Aspen HYSYS will calculate the electrical conductivity of an ionic system if the OLI Electrolytes property package has been selected in the simulation basis. The OLI Electrolytes property package requires a separate license from OLI Systems (email: oli.support@olisystems.com; web: http://support.olisystems.co... |
Problem Statement: I have selected to use the Ideal Property method in Aspen HYSYS and have noticed that the heat capacity calculated in my simulation is different to what I have seen in literature. Is it possible for me to view what the equation looks like that is used in the calculation of this temperature dependant ... | Solution: You will need to export an aprbkp file from Aspen HYSYS to Aspen Properties. The aprbkp file can then be loaded into Aspen Properties and 'Retrieve Parameters Results' function from the Tools Menu can be used to display the parameters under the Properties>Parameters>Pure Components folder. The user can now vi... |
Problem Statement: How to enable Property Package in the Aspen HYSYS to CAPE-OPEN Property Packages? | Solution: The CAPE-OPEN Property Packages are interfaced through COM thermo option in the basis environment. Detailed procedures for setting up a CAPE-OPEN property package in Aspen HYSYS simulation basis are described in the attached document.
Keywords: CAPE-OPEN, CAPE.
References: None |
Problem Statement: I have components that are not there in the component list of Aspen HYSYS. What should I do? | Solution: Use hypothetical component(s) or pick up similar one(s) from the list.
HYPOTHETICAL COMPONENT:Solution number 109781 contains the detail procedure of creating a hypothetical component.
If you use a hypothetical component, you can also provide the structure of the component using UNIFAC component builder. It... |
Problem Statement: How do I change component properties using the Aspen Properties Database Manager | Solution: Since you cannot modify the default databases you need to create a new one that you can modify. Open the Aspen Properties Database Manager. Right click on Aspen Physical Properties Database V7.2 and select create new database:
Clone of the existing databases and click next:
Use login name apeduser and passwor... |
Problem Statement: How do you install Aspen Properties Mobile? | Solution: Aspen Properties Mobile is a client-server application with a very light client installed on the end-users mobile device. The current version supports Apple iPhones (original, 3G and 4G), iPod Touch, and iPad.
The calculations are performed on a server. The server is hosted by the customer. Out of the box A... |
Problem Statement: Is it possible to predict wax formation for a known stream? | Solution: The ProFES deposition correlation method (available via the Deposition | Methods pagetab on the Pipe Segment form) can be used to predict wax formation based on the feed conditions entering the pipe.
Third party methods can be also be added as plug-in extensions.
Keywords: wax, deposition, pipe, segment, ProF... |
Problem Statement: Why are the hypo components not removed after deleting the blend from the Oil Manager? | Solution: If you create a blend from the Oil Manager and then delete the blend you will notice that the hypo components created by the blend will remain in the simulation. To successfully delete a blend:
1. Enter Oil Environment via the Simulation Basis Manager.
2. Select Cut/Blend tab inside the Oil Charac... |
Problem Statement: Is there a way to display a value from a stream utility on the PFD? For example, can the cetane index for a given stream be displayed on the PFD? | Solution: Because the cetane index is calculated by the cold property utility, there is no direct way to display this value on the PFD, since there is no PFD object associated with the utility itself. In order to circumvent this problem, it is necessary to first import the the value from the utility into a HYSYS spread... |
Problem Statement: Can I input single ion concentrations using the OLI Electrolyte interface (i.e. enter Na+ and Cl- instead of NaCl)? Additionally, if the ionic species present in an aqueous | Solution: are known, can the OLI Electrolyte model calculate the concentration for each ion if the pH is known?
Solution
Unfortunately, the OLI interface within Aspen HYSYS uses molecular input for all species and not the corresponding ions. It is therefore necessary to enter a neutral molecular compound (such as NaCl)... |
Problem Statement: How can I Input the Vessel Nozzle Elevation Information in a Separator? | Solution: Vessel nozzle elevation information can be entered via the Rating | Nozzles pagetab on the separator view. In order to make this page viewable, however, the Fidelity license option must be enabled. To do this, open the Integrator (select Simulation | Integrator from the top level menu or press Ctrl+I) to the ... |
Problem Statement: Are ACM models backwards compatible in Aspen HYSYS? | Solution: New in Aspen HYSYS 2006, you can import Aspen Plus *.bkp file or Aspen Properties *.aprbkp files as an alternative to *.appdf and *.aprpdf files. Because *.bkp files are backward compatible and can be easily moved from one version of Aspen Properties to another, this feature makes it easier to reuse ACM expor... |
Problem Statement: Is there any validation data for the symmetric model used in the hydrate formation utility? | Solution: The attached spreadsheet includes:
1) the three main references used in evaluating the model parameters for the symmetric model
2) the corresponding experimental data for various hydrate systems
Keywords: symmetric, model, parameters, experimental, data, hydrate, formation, utility, comparison
References: Non... |
Problem Statement: What is the ambient temperature for a pipe surrounded by water or air? | Solution: The ambient temperature entered in the Aspen HYSYS pipe segment is the bulk temperature of the fluid surrounding the pipe. For the purpose of the heat transfer calculations, the surrounding medium is assumed to be at constant temperature and have no thermal gradients.
Keywords: pipe, ambient, temperature, seg... |
Problem Statement: How do I create a database that can be used only within a 3rd party vendor of a client company with restricted access? | Solution: This database security measure was implemented to enable the content of the database to be secured to protect the intellectual property of the company when the database is shared with an outside vendor, such as a technology partner or an engineering company.
The requirement is that the 3rd party must be abl... |
Problem Statement: What is the recommended fluid package option for a TEG-Water system, containing 80 wt% TEG and 20 wt% water? | Solution: Glycol fluid package (available from 2004.1 and later versions only) is recommended for this application. Detailed discussions, comparison of results from Aspen HYSYS with literature, and references is attached with thisSolution..
Keywords: TEG, TEG-Water, regenerator, Glycol, Fluid, Package, Fluid Package
Re... |
Problem Statement: Upon launching Aspen HYSYS, I get an error message Please install XML parser 4.0. How can this problem be resolved? | Solution: The XML parser is required by Aspen HYSYS for some of its functionality and as such it should automatically install with Aspen HYSYS on Windows XP. This error normally appears due to conflicts between the installation of the XML parser and Internet Explorer components used by HYSYS, and is normally solved ins... |
Problem Statement: In Aspen HYSYS, if you open column property view, and select Performance | Profiles. You will find that the volume flow reported here is Std Ideal Liq Vol Flow for every stage in the column. The | Solution: will show you how to generate report with tray by tray actual volume flow and transport properties.Solution
In the attached MS Word document, you will find step by step instructions with HYSYS screen shots.
For users on super fast track,
1. Open column property view
2. Select Performance | Plots... |
Problem Statement: How do I specify heat of reaction in a conversion reactor? | Solution: The heat of reaction for conversion reactions in HYSYS is calculated based on the heats of formation for each of the components participating in the reaction. Since the duty calculated for the reactor is dictated by the enthalpy balance around the operation, the only way to match the heat of reaction (and hen... |
Problem Statement: Is it possible to copy or insert existing segments in the Aspen HYSYS pipe operation? | Solution: Attached is a customized Excel workbook that will enable the user to insert or append copied segments into an existing pipe. The following parameters are transferred:
Length
Elevation Change
Outer Diameter
Inner Diameter
Increments
Roughness
Pipe Wall Conductivity
Keywords: pipe, segment, copy, insert, add, a... |
Problem Statement: How can I fix the compressor speed for multiple stages? | Solution: You can use the spreadsheet operation to specify the speed of more than one compressor stages at the same time, as in the attached simulation. Note that the value of the desired speed (cell B2) must be calculated in the other cells (B4, B5 and B6) in order to export the value.
In this example, compressor cu... |
Problem Statement: How do I display the CP/CV ratio for all stages in a column? | Solution: Aspen HYSYS does not display the Cp/Cv ratio for stages.
Wordaround:
Create internal streams expressly for this purpose on Flowsheet| Internal Streams page, and then add the Cp/Cv ratio for each of these internal streams on Flowsheet| Variables page of the column property view.
I have attached a sample case t... |
Problem Statement: How to access the elevation variables of mixer and tee, Base Elevation Relative to Ground Level, Elevation (Base), and Elevation (Ground), in dynamic model through OLE automation? | Solution: Backdoor approach is used to retrieve the variables.
In the attached MS Word document, Aspen HYSYS screen shot showing the variables and the VBA code snippet are presented.
Keywords: Backdoor variable, Base Elevation Relative to Ground Level, Elevation (Base), Elevation (Ground).
References: None |
Problem Statement: How do I create an Aspen Properties database so that it can be used only within a client company? | Solution: If you want to add security measures to protect the database from unintended usage so that the database can be used only within the users own company, you can do that. If you try to restore the secured database at different company, it would not function. To create a database with this security, follow these ... |
Problem Statement: How can I add a material balance table to the PFD? | Solution: Object inspect the stream or operation for which you want the Table. Choose the option Show Table from the Object Inspection menu. The Table will appear on the PFD, and will contain the default variables appropriate to the Object Type. Object Inspecting the Table opens a menu allowing you to change the Proper... |
Problem Statement: I want to add a pipe segment between two already existing pipe segments. Can I do that? | Solution: Beginning with HYSYS version 2.3, this is possible. Unfortunately, this functionality is not available in HYSYS 2.2 or earlier. In HYSYS 2.3, on the Rating tab, Sizing page select the pipe segment that you wish the new segment to be inserted before then press the Insert pipe segment button. The Append pipe se... |
Problem Statement: For a blend spec operation, why does the operation show duplicates for certain specification? | Solution: From Results Window, select tab Operation, with column BLEND active, some blend operation has duplicate rows. Those are caused by the spec the user made in table BlendSpec. If you spec the quality in both MIN/MAX, you will have duplicate rows. If you only spec MIN or MAX, there will be only one row displayed.... |
Problem Statement: After selecting which variables you want to display on a chart, the results may show phase properties (i.e. liquid mass enthalpy) even though the specified phase does not exist (i.e. the mixture is above the critical point). Such properties may be misleading unless the overall thermodynamics of the s... | Solution: To avoid incorrect interpretation of the results, it is advised that the user display the phase fraction on the plot, and monitor this value. For example, if the liquid fraction is zero, then all liquid properties may be ignored.
This behavior is consistent with other dynamic simulators (i.e. Aspen Dynamics) ... |
Problem Statement: Is there a shortcut key that allows you to break a connection on the PFD in Aspen HYSYS? | Solution: New in Aspen HYSYS 2006.5, holding down the B key allows you to break a connection between two objects (in the same manner as holding down the Ctrl key activates the PFD Attach mode).
Keywords: shortcut, short, cut, hotkey, hot, key, break, connection, disconnect
References: None |
Problem Statement: Dais Trader Configuration and Tips | Solution: 121142 - PCWS Trouble Shooting Guide
for the latest, comprehensive information for Production Control Web Server Issues.
Applicable Version(s)
Production Control WebServer - all versions
Aspen DMCplus and Aspen IQ - all versions on supported platforms
Keywords: Production Control Web Server
Web Viewer
PCWS
... |
Problem Statement: Is there a way to make column specifications as independent variables (ind) in a case study?
Or
Why can I not check the white box 'Ind' when column specification is inserted as independent variable in case study? | Solution: In order to manipulate the variables in the case study, they must be user-specified values. It is possible to insert the non-specified variables in the case study, but then the variables can only be specified as 'dependent' but not as 'independent'.
In a column if after inserting column specification in a c... |
Problem Statement: What property constants are available from the PureComponentConstant function in the Aspen Properties Add-in for Excel? | Solution: Some pure component parameters are available using the Aspen Properties Add-In using
=PureComponentFunction(ComponentList, PropertyName)
There are eight possible PropertyNames:
· AcentricFactor
· CriticalCompressibilityFactor
· CriticalPressure
· CriticalTemperat... |
Problem Statement: When I use Mouse wheel for 'Zoom In' and 'Zoom Out', it doesn't work. Why? | Solution: Ensure that 'Enable Cross Hairs on PFD' checkbox has been activated in your session preferences (i.e. select Tools | Preferences from the main menu and view the Simulation | Options page).
Key words
PFD, zoom, zoom in, zoom out, mouse
Keywords: None
References: None |
Problem Statement: When copying a flowsheet object from one simulation case to another, the fluid package selected in the object is compared to the existing fluid packages in the second simulation case. If a matching fluid package cannot be found, the original fluid package will be copied into the second simulation cas... | Solution: In Aspen HYSYS, any two fluid packages are considered as matching or equivalent, if the fluid packages have identical set of components, identical sorting order for each of the components in the set, and identical selection of property package. If matching fluid packages are found in two separate simulation c... |
Problem Statement: When entering binary interaction parameters for an activity coefficient model, what do the subscripts represent (i.e. what do i and j represent in the Aij and Bij matrices)? | Solution: When entering binary interaction parameters (Aij or Bij) in an activity coefficient model, i represents Component i and j represents Component j in the binary pair. In matrix notation, i corresponds to the row where Component i can be found, and j corresponds to the column where Component j is located. Refer ... |
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