question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
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Problem Statement: Guidelines to choose controller tuning parameters. | Solution: The output of PID controller equation is defined as:
A screenshot for the PID controller view in HYSYS is given below.
Generally, the proportional control is considered the principal component in the controller equation. The integral and derivative actions are used to trim the proportional response. Therefore... |
Problem Statement: PCSPUT failure and WFAILM | Solution: WFAILM is the option flag for handling PCSPUT errors, i.e., write errors. These can occur if a controller mode is changed from CASC to non-CASC or the MV limits are changed between the read and write phase of the controller cycle. If the point in the Process Control System has been deleted and re-built, PCSPU... |
Problem Statement: How do I change the conversion/interconversion method in Petroleum Assays for D86/TBP and D2887/TBP? | Solution: In order to change the conversion/interconversion methods, follow the steps shown below:
- Go to Home tab in the Properties environment and locate the "Options" button under Oil section.
- The Assay Options window is displayed. Here you will see the Conversion Methods section available. Select the desired met... |
Problem Statement: How to model radial heat transfer in cylindrical geometry. | Solution: For axisymmetric configuration, the temperature depends only on a single coordinate, r, and the heat transfer equation can be written as follows:
Due to the formulation of the equation, we will need a distribution for the temperature and another one for the r(dT/dr).
T as Distribution1D(XDomain is x) of tempe... |
Problem Statement: Error message shows "Invalid SS cost for CVs" when adding a rank 9999 for some CVs.
This occurs because a CV which has a steady state cost specified cannot be ignored by the engine completely and a Rank 9999 is not allowed for such CVs. | Solution: CVs added to a controller application only for economics optimization purposes, cannot be ignored from feasibility check. However, they could be given the least important rank in the feasibility list, essentially allowing the controller to ignore the CV limits in preference to the more important process limit... |
Problem Statement: What does "zapped large volume error" signify? | Solution: When the “Truncate large volume integration errors” in the Integrator is checked, the system will try to rectify any errors in volume of the holdup calculations.
If the volume of the holdup doesn't match the physical volume of the vessel and this option is checked, the vessel of volume is slightly modified ... |
Problem Statement: How to use #LP in your units' worksheet | Solution: To use linear optimization in your units worksheet, use the keyword #LP to specify the LP matrix to be optimized. This keyword can be used in the following worksheet types:
- INIT
- PREP
- POST
- UNITS
To optimize in the schedule enter the keyword #LP (or #LPX for XPRESS LP solver) in ... |
Problem Statement: How are the Lower/Higher Heating Values (LHV/HHV) calculated for hypothetical components? | Solution: Details about how the LHV and HHV heating values are calculated in Aspen HYSYS are provided in Knowledge Base Solution 116935. For hypothetical components where the user has specified a heat of combustion in the Properties environment, HYSYS will report the same values for both the LHV[std] and HHV[std]. To s... |
Problem Statement: I am using the Activated Economics feature inside Aspen HYSYS. On my Aspen HYSYS simulation, some of the utilities required are represented by material streams. When I do the cost evaluation, the operating costs related with those utilities does not show on the results. How can I include those costs? | Solution: The user needs to designate such material streams with a utility type. To do so just open up the material stream on HYSYS that is representing the utility and tag it with an utility type:
The utilities available in the drop down list are included in a database inside HYSYS, but the user can add their own ... |
Problem Statement: When having a Fire Scenario for a PSV in the Safety Analysis environment, how is the Latent heat estimated with the Wetted method? | Solution: The Wetted calculation method estimates the latent heat of vaporization based on the duty required to vaporize a specified portion of the holdup liquid in the vessel on a molar or mass basis. The sensible heat can be or not included, depending on the selection.
An example is attached based on the Pressure Rel... |
Problem Statement: (Japanese) 仮想成分を作るのに最低限必要な情報は何ですか? | Solution: 添付PDFファイルを参照ください。
Keywords: Hypo
JP-
References: None |
Problem Statement: The sulfur recovery process involves many energy-intensive steps, where process streams must be heated and cooled to achieve conversion and sulfur removal. A bottlenecked sulfur recovery system can prevent processing of high sulfur feedstock leading to significant opportunity loss. | Solution: Sulsim technology, the leading sulfur recovery process simulator developed by Sulphur Experts, has been fully integrated in V9 of Aspen HYSYS, allowing users to optimize the entire gas plant in one simulator. Additionally, Sulsim Sulfur Recovery in Aspen HYSYS V9 includes new functionality, models and unit op... |
Problem Statement: When a user would like to change the composition of a stream using the case study tool, the stream will try to normalize the composition with each state, which might require some user interaction. How can we change the composition of a stream as independent variable to monitor properties as dependant... | Solution: The solution is to use the spreadsheet. The composition could be entered in the spreadsheet and exported to the stream.
Then, the user can add the input composition from the spreadsheet to the case study as an independent variable. Each case study state will change the composition in the spreadsheet and Aspen... |
Problem Statement: Can Aspen HYSYS calculate the oil shrinkage factor? | Solution: The oil shrinkage factor is a measure of how much oil shrinks as the light components are blended into a common crude oil stream.
In the industry, this is usually calculated with API's publication 2509C or with the more recent equations in Chapter 12, Section 3 of the 1996 Manual of Petroleum Measurement Stan... |
Problem Statement: How do I model Insulated Vessel blowdown under Fire scenario? | Solution: Use the Stephan Boltzman Fire equation or fix an external heat flux using Fire (just set C1 to a value and the remaining constants to zero). Add the insulation by using the 'detailed' heat loss model. Make sure you have checked the "Apply duty stream to outside wall" checkbox, which will ensure the fire duty ... |
Problem Statement: Is there a standard way to determine relief conditions for blocked outlet scenarios? Will AspenTech implement one in the near future? | Solution: Many customers have requested that AspenTech provide an automated blocked outlet relief load calculation.
At AspenTech we work continuously to make your work easier and faster, however we will not pretend to offer a solution where significant engineering judgement is required; this is the case of blocked ... |
Problem Statement: I have noticed a difference between the heat capacities (Cp) of my aqueous phase in a hydrocarbon / MEG fluid between Aspen HYSYS V7.1 and V7.3. The Cp tables for water / MEG mixtures agree with the values obtained from V7.3. | Solution: In Aspen HYSYS V7.1 or earlier versions, the Lee-Kesler enthalpy method calculates enthalpy, entropy, and heat capacity (Cp and Cv) of a mixture that contains water by calculating the contribution from the non-water components (dry basis) using the Lee-Kesler equation of state model and the contribution from ... |
Problem Statement: I have created a stream inside my subflowsheet that I wish to use as a feed stream in the main flowsheet. If I look on the Connections page of the subflowsheet view, however, the stream is displayed as an inlet connection to the subflowsheet. Is there a way to specify this stream as an outlet connect... | Solution: By default, Aspen HYSYS will assume that an unconnected stream inside a subflowsheet is an inlet connection to that subflowsheet. To alter this behavior, create a new unit operation inside the subflowsheet and connect the stream as a product to this newly created operation. If you now exit the subflowsheet en... |
Problem Statement: How to use the Dynamic Depressuring Utility to depressurize at constant flow rate? | Solution: The Dynamic Depressuring Utility in Aspen HYSYS can be setup to give a constant flowrate following the steps given below.
1. Add a new Depressuring Utility to the stream that you want to analyze.
2. Define the geometry of the vessel appropriately via the Connections page.
3. Open the Valv... |
Problem Statement: What could cause Aspen Capital Cost Estimator to stop evaluating the project after clicking the "Evaluate" command? | Solution: If you get an empty evaluation progress bar such as this:
"Percent Completed: 0%"
And if you try to evaluate an individual component you get an error message:
"Capital cost report not found, may need to evaluate item."
There is a chance that your ACCE Engine is damage, the reason for this can be multiple but ... |
Problem Statement: Can I specify different maximum shop fabrication diameters for different areas? | Solution: Since V7.2, user is allowed to specify different maximum shop fabrication diameters for different areas by changing the shop fabrication maximum diameter field that is added in the area level equipment specifications form.
Keywords: Area equipment spec, maximum diameter
References: None |
Problem Statement: What do I need to do to get the "Air cooler, free-standing or rack-mounted" component hung on my steel structure? | Solution: If you set the height (leg height) to 0 it will be rack mounted.
Keywords: Air cooler, free-standing, rack-mounted, leg, height, rack, steel, structure
References: None |
Problem Statement: I unlinked some of the areas from control centers and unit sub-stations. When evaluating the project I received such error message as ?Aspen Icarus Cost Engine Application has encountered a problem and needs to close?. | Solution: When a new area is created by user, it automatically gets linked to a control center and unit sub-station. If for some reason, user unlinked some areas and did not link them back to any of the control panels and sub-stations, the aforementioned error will appear. Making sure all areas are linked to control ce... |
Problem Statement: Can I modify my wage rates in Excel and then use that in Aspen Capital Cost Estimator? | Solution: Yes. You can copy the wage rates from Aspen Capital Cost Estimator into Excel and make your modifications. When you are through, then use the Paste Selection feature to copy them back to Aspen Capital Cost Estimator.
Keywords: None
References: None |
Problem Statement: What version of Primavera (P3) will work with Aspen Kbase and Aspen Icarus Project Scheduler? | Solution: For Aspen Kbase versions 2006.0.4 (Aspen Kbase v2006 with Cumulative Patch 4) and higher, Primavera v5.0 is the only supported version.
This means that version 6.0 if Primavera is not supported at this time.
Keywords: primavera, p3, version, compatible, 5.0, 3.1, 3.0, P3, P3ec, P3e
References: None |
Problem Statement: How do I enter new rental equipment? | Solution: Aspen Capital Cost Estimator provides empty slots in every equipment class for user-entered equipment items. Any that you enter are added to those that Aspen Capital Cost Estimator develops based on your project work items. To enter a new rental item:
1. In the Basis for Capital Costs folder, right-clic... |
Problem Statement: When installing the new aspenONE v2006.5 software, I get an error message stating:
"Error 1303. The installer has insufficient privileges to access this directory: 'C:\Documents and Settings\user_login\My Documents\AspenTech\Aspen Icarus 2006.5 Files'. The installation cannot continue. Log on as an a... | Solution: There are 3 possible reasons that we know of at the moment that can cause this problem:
Reason 1
An important finding is a documented fact regarding the Windows Installer and Folder Encryption. One should be familiar with this, as it will enlighten you to the hardships that using File Encryption can caus... |
Problem Statement: Are there any supports given for conduit with piping, or do I have to library an item? | Solution: At this time, the economic evaluation software does not provide conduit supports. You will have to account for the conduit support either through a quoted item or by adjusting your material/man-hours for that item.
KeyWords
conduit
support
supports
Keywords: None
References: None |
Problem Statement: According to the Association for the Advancement of Cost Engineering (AACE) International, what will be the Estimation Class that Aspen Capital Cost Estimator (ACCE) will give me? | Solution: ACCE cost is applied for the Conceptual estimate phase, which has a typical accuracy between +/-20% and +/-10%. In terms of class, it is equal to a CLASS 3 Estimate, according to the AACE International.
Find the attached file with the explanation.
Keywords: Accuracy, AACE, Class 3
References: None |
Problem Statement: Ho can I solve the following error:
FATAL> 'T - 2' CURRENCY INPUT USED, ALL INPUT FIELDS MUST BE SPECIFIED | Solution: This error refers to the General Project Data form, specifically the lines defining project base currency:
Please note that the conversion factor in the screenshot above is in light blue, which means is a default value, however in some circumstances the value might not be correctly picked up by the calculat... |
Problem Statement: A situation might occur where a user who views their AACM secondary, primary and overflow queues, notices that they are not decreasing in a timely manner. The messages in the AACM log file indicate the following:
Output - AACM server log file.
IP21Admin (1130308) 04/18/2005 16:39:15.586 AtQueue::Get ... | Solution: The GUI has three edit boxes where each of the queue file names are entered. The entire file path needs to be entered and convert to text button is pressed. Each queue file will be converted into a set of text files that are 10MB each that the user can view in an edit and change the events (malformed etc). Us... |
Problem Statement: What is the frequency or slug frequency Slug Tool? | Solution: The Slug frequency is defined as
v = c / (Lslug + Lbubble)
where c is wave speed.
The slug and bubble lengths tend to infinity as the slug frequency tends to zero.
Keywords: Frequency, Slug Frequency, Slug Tool
References: None |
Problem Statement: How to display or print the workbook table on PFD with desired streams and formatting, and export to Excel. | Solution: 1. When you get the workbook window, you should find workbook menu as the following:
2. Click the setup in workbook menu:
3. You will get the following window:
4. You will build a stream tab by choosing material stream and click ok:
5. You ... |
Problem Statement: In the Menu Bar, why don?t I have the option for ?WorkBook? | Solution: The options for WorkBook and PFD only appear in the Menu Bar when that particular item is open on the DeskTop and has focus. So to get the WorkBook option in the Menu Bar, the WorkBook must be open and have focus.
Keywords: :
References: None |
Problem Statement: How can I add another Property Package when working with Amines just for a few unit operations? | Solution: Sometimes, you need to work with amines, but not for the whole simulation, because it might cause some problems (You can check the next solution which shows that Peng Robinson is not good in simulating Amines 109782).
That's why it's recommended to choose to use the Amine Pkg or the DBAmine Pkg for the specif... |
Problem Statement: What are the main differences between HYSYS Oil Manager and Petroleum Assay Manager? | Solution: HYSYS Oil Manager
Petroleum (RefSys) Assay Manager
Each petroleum assay blend has its own set of component lists. If you have 10 blends, each contains 30 hypo-components, you will have 300 hypo-components in the component list.
Multiple assays / blends share the same component list. The number of hypo-compone... |
Problem Statement: How di I override the default emulsion viscosity method in pipe segment for an Oil/Water mixture? | Solution: For an Oil/Water mixture, Aspen HYSYS uses the following mixing rule to calculate mixture viscosity (see Solution 108998)
A? For V(oil) > 0.5, Mu(m) = Mu(oil) * e^[3.6*(1-V(oil)]
A? For V(oil) < 0.33, Mu(m) = [1 + 2.5 V(oil) ((Mu(oil) + 0.4 Mu(water))/(Mu(oil) + (Mu(water))] Mu(water)
A? ... |
Problem Statement: How do I configure the variable (step-wise) fire load in depressurizing utility? | Solution: The fire load can be applied as constant or variable based on vessel wetted area in the depressurizing utility. A constant fire load of different size during depressurizing can be configured in the spreadsheet available under the Operating Mode in the Heat Flux page. See screen-shot below.
To implement differ... |
Problem Statement: How to get a collections of utilities of a certain type in Aspen HYSYS through VBA Automation. | Solution: The property "UtilityObjects" from HYSYS.SimulationCase can be used to retrieve the collection of all utilities in a simulation case, however this property doesn't take an indexer to narrow by type the elements like "HYSYS.Flowsheet.Operations" does (see solution 144577).
This simple piece code illustrates ... |
Problem Statement: In the Oil Manager, I have created an Assay and a Blend from that Assay, but I cannot install the Blend. I can give the blend a stream name but cannot select a flowsheet for the installation. | Solution: This happens because the Oil Manager does not have the correct Fluid Package associated with it, or the Fluid Package that is associated with the Oil Manager is not associated with any of the flowsheets or subflowsheets in the simulation.
You will need to leave the Oil Manager and return to the Simulation B... |
Problem Statement: Getting Non-compatable Fortran DLL compiler error after applying the patch for PIPESIM 2010.1 in V7.3 | Solution: After applying the patch for PIPESIM 2010.1 in V7.3,A you may get the error as the below when you solve the PIPESIM.
"Warning during libifport.dll initialization: Non-compatible version of Fortran libifcore DLL was loaded to process address space."
In the case, if you copy the newer versions of the two fi... |
Problem Statement: How can I use mass fraction or volume fraction when importing assay from a csv file? | Solution: In the csv file, the Heading COMPOSITION (MASS) or COMPOSITION (VOLUME) should be specified in the table.
Make sure that you add the type of fraction in brackets.
KeyWords
Import, csv, volume fraction
Keywords: None
References: None |
Problem Statement: How do I calculate gas property correlations (HHV, LHV and Wobbe Index)? | Solution: The HHV (vol basis) and Wobbe Index gas correlations are calculated based on "ISO 6976:1995", and are identical to equations 8.2.1 to 8.2.6 in the "GasProps User Guide.doc" attached here with the solution.
The value of Z is calculated from equation 8.2.1 (not calculated from HYSYS via Z = pV/RT). The HHV (mol... |
Problem Statement: What conditions should the gas or liquid be referenced when adjusting a reservoir composition to suit the Gas-Oil (or Gas-Condensate) Ratio | Solution: Depending on the referenced condition, the user will obtain different values i.e at stock tank conditions, reservoir saturation conditions or the first flash.
The GOR or GCR calculations should be done in the way the GOR or GCR measurement was done. The difficulty here is finding out how it was carried out. I... |
Problem Statement: What are the formulae used for calculating Surface Area, Metal Volume and Fluid volume as displayed in Performance\Summary of the Plate Fin (LNG) Exchanger? | Solution: The calculation of Fluid Volume, Surface Area and Metal Volume for an LNG exchanger has been illustrated in the attached example HYSYS file.
The LNG exchanger ' LNG HX' attached with this solution consists of one hot stream ( A) and two cold streams (B and C). In order to calculate fluid volume, surface area ... |
Problem Statement: How can I use MS Excel to retrieve the heating and cooling curve of a heat exchanger in user specified units? | Solution: In HYSYS, you can find the data on the Performance tab | Tables page of Heat Exchanger property view. For either tube side or shell side, HYSYS provides temperature, pressure, enthalpy, heat flow and vapor fraction along the curves.
From Excel, the heating and cooling curves can be retrieved using VBA macros.... |
Problem Statement: Under specific circumstances, when inserting a Tag in the Legend Area of an Aspen Process Explorer plot, users might encounter the following message:
Note: This message is for informational purposes only. Upon clicking the Close button, Aspen Process Explorer will continue to work. In other words, ... | Solution: Starting in version 2006.5, Aspen Process Explorer performs two different run-time license check routines:
1. It verifies and checks out an Aspen Process Explorer license.
2. When connecting to a specific InfoPlus.21 (version 2006.5 and above) to retrieve tag data, it verifies whether or not the I... |
Problem Statement: The optimizer has stopped and is giving me the message ?Cost convergence?, ?step convergence? or ?globally infeasible?, or ?Flat?. What does this status mean? | Solution: For the HYSYS.RTO+ optimizer, the user can enter tolerances for cost convergence and step convergence.
Cost convergence - the optimizer has found the optimum, and converged to a point where the improvement attainable by taking a subsequent optimization step will improve the objective function by less than the... |
Problem Statement: I am getting this error message:
"No calculation warnings encountered. PIPESYS extension not converged. Invalid data in an object of type class CPressureDiff Value = 147909". What does it mean? | Solution: The problem deals with the pressure drop or difference being more than the allowed value. The best way to resolve this problem is to click the "Force Enthalpy Convergence" box on the tolerances tab. This tightens-up the tolerances and solves the problem.
Keywords: pipesys, error, pressure
References: None |
Problem Statement: What criteria does the Pipe Segment use when checking for Choked Flow ? | Solution: In order to make the Pipe Segment check for choked flow, tick the "Check Choked Flow" checkbox on the Design ... Calculation page.
[The default setting is for this option to be switched off. This option was introduced with Aspen HYSYS 2.4.1]
If this is switched on then as it solves the pipe checks whether
V^2... |
Problem Statement: </b></u>
How can I make Valve Actuator Opening and Closing rates different?
<b><u> | Solution: </b></u>
The Valve unit uperation only allows one Actuator rate to be specified (Dynamics ... Actuator page). However using a Transfer function operation and a Spreadsheet it is possible to make the Actuator rate vary depending on the whether the valve is opening or closing. The attached HYSYS 2.4.1 (Build 38... |
Problem Statement: How do I add the Process Data COM add-in after previously removing it? | Solution: Add the following entries to
HKEY_CURRENT_USER\Software\Microsoft\Office\Excel\Addins\AspenTech.PME.ExcelAddin.ProcessData
Â
After adding the registry key, the Process Data tab will appear in Excel.
Keywords: COM add-in
Process Data add-in
registry
regedit
References: None |
Problem Statement: How do I obtain phase 'Standard' properties using OLE Automation? | Solution: Retrieving standard properties ('Liq Vol Flow @ Std Cond', 'Std. Gas Flow', 'Liq Mass Density (Std Cond)') for Fluid or FluidPhase objects is not as straightforward as for the majority of properties. Since these properties are not yet available within the HYSYS type library, it is necessary to use a 'Backdoor... |
Problem Statement: How does PIMS use API and SPG values? What is the relation between the two of them? | Solution: If API is provided, but not SPG, SPG will be calculated from API. If SPG is provided,
but not API, API is not available for that stream in the matrix. If both API and SPG
are provided (and not correctly related), then PIMS uses SPG for calculations and
keeps the API value as an independent property.
Keywor... |
Problem Statement: Under specific circumstances, when inserting a Tag in the Legend Area of an Aspen Process Explorer plot, users might encounter the following message:
Note: This message is for informational purposes only. Upon clicking the Close button, Aspen Process Explorer will continue to work. In other words, ... | Solution: Starting in version 2006.5, Aspen Process Explorer performs two different run-time license check routines:
1. It verifies and checks out an Aspen Process Explorer license.
2. When connecting to a specific InfoPlus.21 (version 2006.5 and above) to retrieve tag data, it verifies whether or not the I... |
Problem Statement: Aspen InfoPlus.21 can expose some of his records as OPC DA items to be read by any OPC DA client like Matrikon OPC Explorer or OPC Expert. In the case of custom records definitions, to expose his values trough the IP.21 OPC DA server they need to have timestamp and quality status fields properly asso... | Solution: Start by creating a new definition with a Value, Quality and Timestamp fields on the normal area of the records as follow:
In this case cst_value hold a Real single precision value formatted by a format record, cst_time is a normal time stamp value also formatted by a format record and cst_quiality is a signe... |
Problem Statement: AspenWatch Maker configures the AspenWatch database to collect and historize data from almost all of the known variables (entries) that will be in a .ccf. What about the "user defined entries" | Solution: User defined entries can be historized into Miscellaneous tags. If there are user defined entries in the .ccf, there is a file that is created by AspenWatch Maker when a controller is loaded, called "UserEntryTags.txt", and placed in the ...\AspenWatch\app\<controllername> directory, which contains the user d... |
Problem Statement: Collection tasks in AspenWatch Maker are not collecting | Solution: The most common reason for the AspenWatch collection tasks not collecting, is because the DMCplus Context server is not running on the DMCplus Online machine.
To correct:
Go to the Aspen DMCplus Online machine and check for a process cimio_dmcp_dlgp in the process window of the task manager.
If the process is... |
Problem Statement: Aspen Watch Maker is unable to start the collection from a controller with a Run Status of “Not Licensed”. On a further inspection the time from the last scan (Watch) does not correspond to the time showed on the server: | Solution: Aspen Watch Maker is linked to the current time from the IP.21 Database. To confirm if this time is the same as the one showed on the server open IP.21 Administrator and then right click on the server name. Hit properties and then go to the “Time Parameters” tab.
Then confirm if you have the correct UTC Time ... |
Problem Statement: 在Aspen InfoPlus.21 Definition Editor中把自定义纪录（custom definition record）转换成可应用（usable）的时候,出现如下错误。 | Solution: 此问题是因为删除字段（field）的时候没有把 references 先删除。它通常出现在历史重复区（history repeat area）被修改了的时候。此问题可以通过如下步骤来重现：
1. 在 Aspen InfoPlus.21 Definition Editor 中复制 （duplicate） IP_AnalogDef。
2. Duplicate Definition Record 中输入名称。
3. 分别右击历史重复区 IP_#_OF_TREND_VALUES 中的 IP_TREND_TIME, IP_TREND_QLEVEL, IP_TREND_QSTATUS 和 IP_TREND_VALUE 字段，... |
Problem Statement: Historian log files generated by archive tools like h21summary.exe or h21arcck.exe contain PointIDs or TagIDs mentioned as references to history events. What is a history point ID, and how do you translate it to an Aspen InfoPlus.21 record ID? | Solution: A history Point ID embeds both the Aspen InfoPlus.21 record ID of the tag and the field pointer of the history repeat area count field and can be calculated with the following formula:
PointID = ( 1024 * IP21RecID) + Field_Pointer of the Repeat-area count field
Where:
? Every record in the Aspen... |
Problem Statement: 有些时候，可能会想运用脚本语言来联系 Aspen InfoPlus.21 Database API 因为不需如 C 语言需要编译。这解决方案目的在于举例如何应用 Python 和 Aspen InfoPlus.21 Database API 做连接。 | Solution: 以下有几点要注意。
1. 必须要晓得 Python 语言。
2. 附加的脚本需应用于 Python 2.6.6，因为已对这个版本测试过了。
3. 由于Python 3.x 上的变化， 脚本可能无法正常运作。
所提供的 Python 附加脚本只是提供为参考，AspenTech Support 并不支持。
Keywords: Python
API
CN-
References: None |
Problem Statement: Why does Aspen Production Control Web Server (PWCS) block the installation of the plotting components AtWebControls.cab?
The PCWS History Plot shows a??Windows has blocked the installation because it cannot verify the AtWebControls.cab publishera?? | Solution: The following message appears: a??Windows has blocked the installation because it cannot verify the AtWebControls.cab publishera?? when the PCWS History Plot is selected.
NOTE: It applies to V7.3 with AtWebControls.cab dated 3/3/2011
Solution 134591 (Aspen InfoPlus.21 Process Browser ECR20120619 (v7.3.0.3)) a... |
Problem Statement: If you want to remove a significant number of tags from a transfer record, it can be time-consuming to accomplish this using the InfoPlus.21 Administrator. | Solution: Using SQLplus, you can purge the tags from the transfer record and repopulate it with only the desired tags.
ALWAYS REMEMBER BEFORE RUNNING ANY SQLPLUS SCRIPTS THAT MODIFIES YOUR INFOPLUS.21 DATABASE TO FIRST BACK UP A COPY OF YOUR DATABASE USING THE SAVE SNAPSHOT FEATURE.
The script below contains this safet... |
Problem Statement: It is possible to import the contents of IoGetDef and IoPutDef Records into Microsoft Excel without the use of Aspen SQLplus Scripts. This solution steps you through how to bring these records into Microsoft Excel using an ODBC connection. | Solution: The steps to accomplishing is subdivided into three component parts. On a Windows platform, follow the steps below to call Microsoft ODBC.
Part One
? Start ----.> Settings --------> Control Panel
? Double click on Administrative Tools
? Double click on Data Sources (ODBC)
? C... |
Problem Statement: PIMS can report PI values in the Full solution, Process Submodel Summary for feed and yield streams.
The PI value for the stream is also called "Incremental value" which represents optimal price of the stream.
How to configure the table to report the PI value? | Solution: Add optional column "PI" in table SUBMODS and enter non-zero value (e.g. 1) to report PI value for the submodels.
Please refer to the following example.
Full Solution Report:
Keywords: SUBMODS
Full
References: None |
Problem Statement: After a fresh installation, Aspen APC Web data provider and AFW Client Security services crashed when accessing PCWS. The error shows on the browser included the comwebserver.connect() phrase. | Solution: The installation was not successful. When task manager is pulled up on the server, it is showing an MsInstall.exe running and the Event Viewer is showing Msinstall failure under the System Event.
At that time, the Aspen APC Web Server package needed to to uninstall using AspenOne Uninstaller. Reboot after t... |
Problem Statement: Creating and Using Custom Reports | Solution: The attached presentation covers the following topics in the creation and use of custom reports in the Economic Evaluation products:
· General reporting overview
· Custom user attributes
· Creating customer reports
· Step-by-Step Report Creation for Excel Reports
· Ve... |
Problem Statement: There may be a situation in which you want to use a scripting language instead of C language to call on the Aspen InfoPlus.21 Database API as it does not involve compilation. This solution aims to provide an example of how Python can be used to interface with Aspen InfoPlus.21 Database API. | Solution: There are a few points to note.
1. Knowledge of Python language is a MUST.
2. Usage of Python 2.6.6 as the attached script has been tested against this version of Python.
3. Python 3.x may or may not work with the script due to the inherent change make in 3.x.
The attached Python script is provide... |
Problem Statement: Assume that you specified a value of 15.9999 in cell A1 of the spreadsheet in the attached HYSYS file. Instead of displaying the exact value you specified, HYSYS shows a value of 16.00. How can you get the value of 15.9999 displayed? | Solution: What you need to do is to modify the default format setting in the HYSYS Preference file. Here are the steps to follow:
1. From the HYSYS top menu bar, select "Tools" and then "Preferences..."
2. Go to the "Formats" page on the "Variables" tab page.
3. Scroll down the list to find the variable called "CellVal... |
Problem Statement: Steady state calculation of the effect of heating / cooling a closed system.
A typical application of this would be to calculate the final conditions after heating a vessel or shut in section of pipe work. | Solution: In steady state operation HYSYS can only model flowing systems; so instead of modelling a fixed volume it is necessary to create a flowing system and ensure that the volume flow stays fixed. A good way to do this is to use a heater / cooler and have an Adjust operation to vary the outlet conditions until ther... |
Problem Statement: In an Aspen HYSYS or Aspen Plus simulation with Activated Economics results, how can I create a case study by varying an inlet variable and reviewing the impact on Activated Economics reports? | Solution: The Case Study tool cannot be used to perform this calculation. The workaround is to send the variables to the Aspen Simulation Workbook add-in for Excel.
· Be sure that the simulation is running and Activated Economics is generating results with no warnings or errors (the steps below are for Aspen H... |
Problem Statement: How to show mass and energy balance around a column stage? | Solution: A user can check mass and energy balances around a column stage using the flowsheet shown in the attached simulation case.
HYSYS column offers a check box for splitting an external feed. If this this box is checked, the vapor potion of the feed goes to the stage above directly. If this box is not checked as d... |
Problem Statement: What are the equations used in the separator for the calculation of the convection heat transfer coefficients when pressing the "Estimate Coefficients Using Current Conditions" button? | Solution: The correlations used for estimating the heat transfer coefficients (HTCs) in the separator are the same as those used in the Dynamic Depressuring utility by the Detailed heat loss model (these can be viewed in the Dynamic Depressuring utility by selecting the Correlation Constants radio button and clicking o... |
Problem Statement: Which property package should I use for modeling a liquid sulfur system? | Solution: There are three compounds in HYSYS database representing liquid sulfur. They are S_Liq_150, S_Liq_190 and S_Liq_280. This is mainly due to the abnormal behavior of the viscosity of liquid. It is not possible to reproduce such behaviour using a generalized correlation. Therefore, HYSYS uses three components to... |
Problem Statement: Which Property Package should I use for Sour Water systems? | Solution: The PR Sour or SRK Sour models are specialized in representing sour water systems. They use Wilson's model to account for the ionization of H2S, CO2, and NH3 in the aqueous phase and therefore provide a better prediction of the solubility of these components in the water phase. They may be applied to sour wat... |
Problem Statement: In this application example, users will learn how to:
· Solve a common sulfur recovery problem using HYSYS: Use simulation tools built into HYSYS to create value in the plant
· Leverage the power of Aspen HYSYS integrated simulation models: Optimize operations across the acid gas treati... | Solution: The Aspen HYSYS Optimizer is a multi-variable steady state optimization tool that finds optimal operating conditions given specified variables, constraints, and objective functions. The HYSYS Optimizer provides many data models, including the new DMO, LSSQP, and BOBYQA options in V9. DMO and LSSQP use success... |
Problem Statement: The Aspen Plus Getting Started Using Equation Oriented Modeling Manual states the following:
"Aspen Plus is not able to solve all SM problems with the EO approach. Certain features that have been implemented for SM have not been implemented in EO. Refer to Features Not Supported in Equation-Oriente... | Solution: Certain blocks do not have equation-oriented formulations. However, the capabilities are still available for the EO Solution Method via the Perturbation Layer, except for RBatch, which is not available because it is a dynamic model which will not work with the steady-state EO formulation in Aspen Plus.
Some o... |
Problem Statement: The incompatible error message occurred when exporting a file from Aspen Custom Modeler to Aspen Plus because the Microsoft Visual Studio 2013 is not supported. The error message is
"A compatible version of Visual Studio 2008 was not detected on the system. This update is designed for only the Micros... | Solution: A new compiler.cfg is needed to support Microsoft Visual Studio 2013 as a compatible version. The new compiler.cfg that supports MS Visual Studio 2013 can be download from KB 131011.
Keywords: Microsoft Visual Studio 2013, Compiler.cfg, Aspen Plus, and Compatibility
References: None |
Problem Statement: How do I display a physical property such as viscosity on the Stream Summary? | Solution: Any prop-set property can be added to a stream report. Follow the instructions below to display stream viscosity in the stream report. You can also use this procedure to display other physical properties in the stream report.
1. Create a new property set.
2. Use the search button and type the name of ... |
Problem Statement: How to fix graphics format lost when copying / importing a simulation into a hierarchy. | Solution: Please follow the steps below as a work around to fix this problem:
1. Open your file and add a Hierarchy in the main flowsheet.
2. In the main flowsheet right-click on the hierarchy you have just added and select “Import�.
           Import one bkp file from Aspentech examples knowled... |
Problem Statement: I have a HeatX block inside my Aspen Plus simulation. Why is the the option "Detailed" in the Model fidelity section of Setup | Specifications sheet greyed out? | Solution: Starting from version 8.8, the Detailed option is no longer available. The Detailed radio button still appears in the User Interface for compatibility with older files. If you open a file created in an earlier version of Aspen Plus in version 8.8, the option can still be used. However, files created in this v... |
Problem Statement: How is the NPSH calculated? | Solution: The Net Positive Suction Head (NPSH) available for a pump is defined as:
NPSHA = Pin - Pvapor + Hv + Hs
Where:
NPSHA = Net Positive Suction Head Available
Pin = Inlet pressure
Pvapor = Vapor pressure of the liquid at inlet conditions
Hv = Velocity head
(= u^2/2g where u is the velocity an... |
Problem Statement: In addition to Aspen Production record Manager 32-bit ODBC Driver, described in Aspen KB articles 129704 and 129611, there now exists Aspen Production Record Manager 64-bit ODBC Driver.
In order to install this driver you must choose the 64-bit install, as shown below.
Once installed, the A... | Solution: When the Aspen Production Record Manager 64-bit ODBC Driver is used by an application like PowerPivot, it will consume 5 tokens for 24 hours. There is no impact to customers that currently use the Aspen Production Record Manager 32-bit ODBC driver.
Keywords: licensing, 64bit, 64 bit
Excel Addin doesn't work i... |
Problem Statement: Error "Unexpected result in SelectServerForDA_DA" occurs while trending a tag in Aspen Process Explorer. | Solution: This problem could be caused by an issue during the installation process. SelectServerForDA_DA refers to a function within IP21DAManager.dll. If this library was not registered during installation process Aspen Process Explorer can also show "IP.21 is not accessible from 'NodeName' or is not currently running... |
Problem Statement: This knowledge base article explains what is meant by the error message:
"H/21 Queuing Error" | Solution: When the Aspen InfoPlus.21 historian returns an H/21 Queuing Error this means that the disk where the archive files are stored is full.
Keywords: space
history
file set
arc.dat
References: None |
Problem Statement: When attempting to start Aspen InfoPlus.21, the user may encounter the following error: "Users access permission does not allow the operation". | Solution: This problem may be caused by logging into the Aspen InfoPlus.21 server with a non-Administrator account, an error during the installation, or by a number of other reasons. As such, there are different ways to solve this problem. Just follow the checklist below:
First, make sure that the login account is a me... |
Problem Statement: When defining the size of a fileset, and therefore defining when a fileset shift should take place, an administrator decides two parameters - a maximum delta time, and a maximum file size. For example you may input values of 14 days, and 500MB. So the Fileset Shift will occur when the filesize reache... | Solution: The good news is that, in the above example, the software will not just automatically allocate 500MB of disk space. There was however a change made with version 4.0 in the way disk allocation for a fileset was and is performed.
Prior to version 4.0, the archiver allocated 256 Kbyte chunks of disk each time it... |
Problem Statement: How much disk space do I need for my Aspen InfoPlus.21 historian? | Solution: The amount of disk space needed for history depends on the number of data records, the scan frequency, and the desired data compression. Use the attached Excel spreadsheet to estimate disk space needed for Aspen InfoPlus.21 historical repositories.
KeyWords:
Historian
History
Repository
Size
Keywords: None
Re... |
Problem Statement: Dynamic User Variable - Record the time that an event occured | Solution: The user variable code below is designed to be attached to a spreadsheet. In Dynamics mode whenever the value of the user variable is changed (either by the user, or by an event in the event scheduler) the value in cell B1 is updated to show the Integrator time.
Sub VariableChanged()
On Error Resume N... |
Problem Statement: Frequently Asked Questions about HYSYS Extensions. | Solution: Please find attached a FAQ document regarding HYSYS Extensions.
KeyWords
HYSYS, Extensions, FAQ, questions
Keywords: None
References: None |
Problem Statement: What is the basis for the HYSIM Inside-Out Column Solver, which is the default algorithm used to solve the Column in Aspen HYSYS? | Solution: The numerical method used for the default Column algorithm in Aspen HYSYS (the HYSIM Inside-Out solver) follows the enclosed paper published by:
Russell, Richard A., A flexible and reliable method solves single-tower and crude-distillation-column problems, Chemical Engineering, October 17 1983, p. 53-59.
The ... |
Problem Statement: I am modeling the Free-Radical polymerization of a defined monomer. I want to obtain the results for the z-average molecular weight (MWZ), the polymer weight average molecular weight (MWW) and the polymer number average molecular weight (MWN).
Results show that the value of MWZ is lower than the va... | Solution: The attribute MWZ is a class 0 attribute used to specify the polymer z-average molecular weight. MWZ is calculated as the average segment molecular weight (MWSEG) multiplied by z-average degree of polymerization (DPZ).
The degree of polymerization is a class 0 attribute used to specify the polymer weight ... |
Problem Statement: Can Aspen Polymer calculate shear-rate dependent viscosity of a Non-Newtonian fluid? | Solution: Aspen Polymer does not calculate the shear-rate dependent viscosity of a Non-Newtonian fluid in the simulation. It is advisable that any blocks in the simulation do not use viscosity in the calculation. Then, only viscosity calculation will be wrong. To reflect the shear-rate dependency, user can calculate vi... |
Problem Statement: Why is Aspen Rate Based Distillation (RateSep) better than using equilibrium stages with efficiencies? There seem to be a lot of fudge factors in rate-based distillation also? | Solution: Equilibrium stage efficiencies are a function of all column conditions (flow, temperature, pressure). This means that they generally do not extrapolate well to other conditions. A rate-based distillation model has more basis in reality using mass- and heat transfer correlations based on transfer properties an... |
Problem Statement: Is there a way to model a biodegradable polyester process in Aspen Polymers Plus using mass transfer? | Solution: Environmental concerns are driving worldwide efforts to develop new biodegradable polymers. These new products include several polyesters such as polylactide (PLA) and polyester 4,4 (poly (1,4) butanediol-succinate), and for PBSL, the copolymer of butanediol, succinic acid, and lactic acid. The purpose of thi... |
Problem Statement: How can I avoid column flooding and improve performance in a methylamines process? | Solution: Column Analysis in Aspen Plus V9 can accelerate engineering workflows for designing and rating of distillation columns with insights into the hydraulic limitations on column trays or packing. In a methylamines process, this is important to avoid flooding issues and attain flexibility to change the product sl... |
Problem Statement: When using "Update SMC Coefficients", should I expect to update PCALC/PCALCB/BLNPROP values? | Solution: "Update SMC Coefficients" utility is designed to update properties.The code in PIMS does write the updated data to the SMC file
From PIMS:
1.- Launch PIMS. Open Volume Sample model. Run BASE case
2.- Click on Submodel Calculator icon in the tool bar menu
3.- Select "SCNP" submodel. Click "OK"
4.- In the "Su... |
Problem Statement: Internal Calculations: Differences in BAD value handling between DMCplus and APC Builder | Solution: Both, the traditional Aspen DMCplus Build and new Aspen APC Builder platforms allow users to develop/write internal calculations that can be used to perform custom calculations that will supplement the controller engine calculations. The traditional DMCplus platform uses a built-in calculation feature in orde... |
Problem Statement: After installing the Aspen Simulation Workbook, the ASW toolbar icons do not appear in Excel 2007 and the Aspen menu does not appear in the Excel menu structure. | Solution: When both the toolbar icons and Aspen menu item are missing, the toolbar may be disabled by Excel. To check for this scenario:
1. Open Excel.
2. Click Office button
3. Click on Excel Option button.
4. Select Add-Ins and go down to see to Disabled Application Add-in section; If Aspen Simu... |
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