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Problem Statement: How do we add Aspen DMC plus online controller to Aspen Watch Maker | Solution: The below procedure describes in details of procedure to add Aspen DMC plus online application to Aspen Watch.
The below procedure needs to be carried out in Aspen Watch server after ensuring both servers are physically able to communicate.
1. From the Windows Start menu, click Programs | AspenTech | Aspen M... |
Problem Statement: What is the Basic Engineering Design Data (BEDD) datasheet for? | Solution: The Basic Engineering Design Data (BEDD) datasheet is a central datasheet which contains the information concerning the site, climatic conditions, utilities, etc., that pertain to a process plant or site.
The data on the BEDD datasheet is transferred to other datasheets to fill out information, for example, ... |
Problem Statement: How to make a 2-D model work in Aspen Adsorption? | Solution: When you switch Spatial dimension to 2-D, Aspen adsorption may stop working.
Please follow this workaround to make 2-D model working:
1.Change specification to 2D model and double click on the specification settings
2.Go to Analyze and then click on use specification tool
3.A new window with Specification a... |
Problem Statement: My backup (.bkp) file is very large which is slowing down the user interface. I do not think that the file should be so big. Is there anything that I can do to reset it and make it smaller? | Solution: The ADS portion of a backup file can accumulate orphan records. The ADS section stores some results such as the new stream results, column analysis results, and batch results. We are working to resolve this issue in the Aspen Plus User Interface, but as a temporarySolution, we have created a batch file that c... |
Problem Statement: When the user would use IAS type isotherms? | Solution: Regular isotherms like Langmuir are based on assumptions that isotherm parameters are regressed against mixture data. However, sometimes user rather have only pure component adsorption data. In that case using IAS option lets the user simulate competitive, multicomponent adsorption using only pure component i... |
Problem Statement: Example of dealing with multiple process options / Workaround for mixer not solving when one feed stream is undefined | Solution: One possibleSolution here is to use a Tee to split the feed between the possible options and then set a Tee split specification to direct the feed to the required option. A mixer can then be used to combine the products from the different options for further processing. However a trick must be used when combi... |
Problem Statement: What is a quoted equipment and how to define it in Aspen Capital Cost Estimator? | Solution: Quoted equipment items can be used for unique, special, non-standard and proprietary types of process equipment, and it is typically used for on-off items which won’t be used commonly in next projects.
The quoted equipment items are unknown to the system, so a Code of Account (COA) must be provided. If the CO... |
Problem Statement: Although BLOWDOWN provides with multiple graphic and table reports, users are also able to retrieve results in VBA | Solution: The attached VBA code provides the required syntax need to call for different sides of the result reports from BLOWDOWN
Version
V10
Key words
HYSYS, Automation, VBA, BLOWDOWN
Keywords: None
References: None |
Problem Statement: How to get Benzene content property on material stream in Aspen HYSYS V11? | Solution: Open HYSYS simulation in Aspen HYSYS V11
Click on Simulation environment
Open required material stream, Worksheet tab, Properties page
Click on Append New correlation button (Green colour plus sign), GC.
Select GC, A C6 Benzene which reports Benzene content property in stream.
Keywords: Benzene content, A C6 ... |
Problem Statement: Where can I find the Calculated Equivalent Length in the Line Sizing tab of the PSV form over the Safety Analysis environment in Aspen HYSYS and Aspen Plus V11?
This value is reported on V10 and previous versions. | Solution: Starting in V11, Safety Analysis environment line sizing use Aspen HYSYS Hydraulics for more accurate calculations, and the Calculated Equivalent Length have been removed.
Nevertheless, if the simulation is changed to Rating mode it will be possible to Edit Pipes & Fittings to get the L/D and the K value, amo... |
Problem Statement: Limitations of Freundlich adsorption isotherm | Solution: Freundlich isotherm may have a good fit in certain ranges, but at zero and infinity it is non-physical. Freundlich isotherm violates certain thermodynamic constraints. The slope is infinite at the 0 concentration limit, which could cause numerical calculation problems. It also hits no max loading as you incre... |
Problem Statement: How to increase work space for large Hysys EO model? | Solution: Hysys EO flowsheet with large component list and complex recycle operation may take much longer time to converge. So, in message panel following error on insufficient work space may show up and solver will stop:
+---------------------- ERROR ----------------------+ ... |
Problem Statement: Usually Microsoft Access database for APS/MBO models are easy to open. You can direct point to the .mdb file. But if the model is in SQL server, how do we open the model? | Solution: First, when a SQL APS/MBO model is being transferred, the model is usually backed up to a .bak file. The user who receive the model needs to restore the database in his/her SQL server. Here are the steps:
1. Copy and paste the .bak file to the following location: C:\Program Files\Microsoft SQL Server\MSSQLxx... |
Problem Statement: What is an Equipment Model Library and how to define it in Aspen Capital Cost Estimator? | Solution: The Equipment Model Library or EML is intended to store custom equipment items, for which you create component specification forms. This library can store a generic equipment item that comes in discrete sizes, such as an extruder, or an equipment item that follows a continuous cost-capacity relationship such ... |
Problem Statement: How do I remove motor control centers from my estimate? | Solution: You may disable motor control centers from the Project Basis View. Go to the Power Distribution form, right-click on your Unit Substation and then choose Edit.
You will find an option for Motor control center required. There is a drop-down and you can choose the - option to exclude cost and installation.
Key... |
Problem Statement: Is it possible to modify the system-calculated design for one of my components and apply my own custom rules? How can I do that? | Solution: The Custom Model feature will help you if you are looking to modify some design with your custom rules.
This is an example of the application of these custom rules: Assume that you have a vertical vessel component, and you want to use your own method to calculate the base material thickness, from the design ... |
Problem Statement: How to resolve the “.NET Framework” error while trying to new Layer on existing gas bed? | Solution: Please follow these steps to create a new Layer set range to get rid of this error:
Go to Variable Find
Type “LayerSet” and hit “Find”.
Right click on the bed name and select “Properties”
Modify the range of Layer as needed. Hit Apply and OK.
This will now enable to add more Layers without the .NET error.
Ke... |
Problem Statement: Why a window which says ‘Clipboard copy is not implemented’ frequently pops up in Aspen Energy Analyzer? | Solution: It is found that the problem is caused by on-line dictionary programs like Bing Dictionary. As the dictionary program uses clipboard frequently when it is activated, there are conflicts with these two programs. The problem will disappear if you close the dictionary programs.
Keywords: AEA Clipboard
Referen... |
Problem Statement: How can I define the color and style of the material streams in my Aspen Plus model? | Solution: There are two very easy ways to change both color and style of material streams in the flowsheet:
1) Right-click on any material stream in the flowsheet and select the ‘Color and Style…’ option.
The ‘Color and Style’ window will appear and you will be able to set the outline color, weight (width) and style ... |
Problem Statement: How can I find the breakdown of the functional groups used by Aspen Plus when doing an estimation calculation based on molecular structure? | Solution: It is possible to get information on the functional groups and the number of occurrences that Aspen Plus uses when trying to do an Estimation. To obtain such values follow the instructions below:
Increase the Diagnostic Message Level to at least 6 for Physical Properties (SetUp | Specifications | Diagnostics)... |
Problem Statement: How can I access pure component temperature dependent parameters in Aspen Custom Modeler? | Solution: Pure component property parameters can be retrieved using physical property procedure calls. For temperature dependent parameters, you need to use the procedure pParamT.
This example attempts to do the following:
1. Retrieve the PLXANT parameters (T-dependent) for two components.
2. Use the retrieved parame... |
Problem Statement: How do I configure the mapping of component in MBO to APS stream when using Copy from APS? | Solution: In order to configure the mapping of the component in MBO to the APS stream for the Copy from APS functionality, you'll need to change the ID in the database table _ZSTRMS. If you don’t want to change the name of the stream, you can create a dummy stream and send all the properties via the POST worksheet.
Key... |
Problem Statement: How can are the model accuracy trends scale is setup in Aspen Petroleum Scheduler? | Solution: Accuracy Screens trends scaling will be defined by the information in the Event View Trends Min/Max Y- Values. If these values are not defined, APS will automatically calculate the min/max Y – values.
We can see observe this behavior that is by design in the following example for CCU Hvy Naphtha Trend that h... |
Problem Statement: How to resolve “Unable to read Basis” error while opening HYSYS V7.3 file in HYSYS V10? | Solution: Open HYSYS V7.3 simulation in Aspen HYSYS V10
Un-register Gas Properties extension from Aspen HYSYS V10, by clicking on Aspen HYSYS V10 file, Customize, Register extension, select Gas Properties extension, click Unregister extension, it resolve the error message Unable to read Basis.
Keywords: Unable to read ... |
Problem Statement: When you change the default directory in Aspen Capital Cost Estimator, the folders order is not respected when saving. | Solution: Verify that the Default Project Directory folder is not duplicated in Alternative Project Directories. If so, Remove the duplicate folder from the Alternative Project Directories, since the program will display these folders in the same order over the Palette window.
If the previous step does not work, try v... |
Problem Statement: Where is the Configure Database Wizard in Aspen Manufacturing Suite V8? | Solution: In AMS V2004.2 two tools were introduced for mass population: the OPC Address Scanner and the IP.21 Configure Database Wizard. The Configure Database Wizard allowed you to create tags in InfoPlus.21 corresponding to tags discovered in a data acquisition device. It did this by importing an XML file previously ... |
Problem Statement: Where are the log or warning messages stored in Aspen HYSYS? | Solution: You may set up Trace and/or Status Logs to track your file constantly.
In the bottom Messages section, right-click on either the left (Status) or right (Trace) section and choose View Properties. On the file name, provide a directory and then either Status.Log or Trace.Log.
For instance:
C:\Users\(user name... |
Problem Statement: What’s New in V11: Add Larger Pile Diameter for Drilled and Cast-in-place Concrete Pile | Solution: We have increased the pile diameter (size) of drilled and cast-in-place concrete piles to 48 IN [1200 MM]. The applicable pile types include AUGR - Auger cast piles, FRNK - Franki piles, and POUR - Poured concrete piles. The 48 IN [1200 MM] size has been added to the pile size dialog box available in the proj... |
Problem Statement: I have a sub-cooled liquid stream. When I adjust the stream pressure, the enthalpy stays the same. Why is this happening? | Solution: The enthalpy is not changing because this is a sub-cooled (or compressed) liquid stream and liquid is essentially in-compressible under normal circumstances. In these situations, it is common for pressure to be ignored leaving only temperature having an effect on the enthalpy.
The software is reporting the ... |
Problem Statement: Can I use compressor curves in Aspen HYSYS Dynamics Mode? | Solution: Yes, compressor curves can be used in Aspen HYSYS Dynamics Mode. When running a Dynamics case with characteristic curves, select the Use Characteristic Curves check box to use the curve(s) specified on the Rating tab | Curves page.
If a single curve is specified in a dynamic Compressor, the speed of the Comp... |
Problem Statement: What’s New in V11: Multiple Item Options for Control Cable in Electrical Bulk Items Form | Solution: Currently the electrical bulk items forms allow adding three different power items. However, only one control item (control cable plus push button station) can be specified for each. In V11, you can specify multiple control items for as many as five different items. (All Programs)
This enhancement will theref... |
Problem Statement: What is the purpose of enrich O2 option for on the FCC Reaction Section | Regenerator page and how is the value used? | Solution: To burn the coke in the regenerator, the operator can use air or enrich O2.
The main purpose of using enrich O2 is if you have air blower limits and you need flexibility in processing various feeds to the FCC. Since the enrich O2 is basically pure O2, you need much less of it than you would need air to burn ... |
Problem Statement: What’s New in V11: Pile Diameter Size Increase of Drilled and Cast-in-place Concrete Piles | Solution: The pile diameter (size) of drilled and cast-in-place concrete piles is increased to 48 IN [1200 MM]. The applicable pile types include AUGR - Auger cast piles, FRNK - Franki piles, and POUR - Poured concrete piles. The 48 IN [1200 MM] size has been added to the pile size dialog box available in the project/a... |
Problem Statement: What dimensions are reported on the TEMA Sheet headings? | Solution: In the Shell and Tube program, the TEMA Sheet (Results | Result Summary | TEMA Sheet) has some results displayed on the top section (headings), such as the Type of exchanger, effective surface area and size:
The size being displayed in this section is the Nominal Shell ID – Tube Length. Since the Shell ID i... |
Problem Statement: How is the “Draft at burners” reported in the API sheet calculated in Aspen Fired Heater? | Solution: The API sheet, on the Combustion section, reports the “Draft at burners”:
This draught result is the combination of all draught losses from the Firebox to the Stack. All the individual contributions are reported under Results | Calculation Details | Draught Details:
In this case for example, adding up the c... |
Problem Statement: How would someone rate an air cooled exchanger for natural convection? | Solution: You should use Simulation calculation - Outlet temperature on both sides, and X-side flow (natural convection), on Input | Problem Definition | Application options | Application Options tab.
If you set the simulation mode to Natural convection, then this will turn the fans off and calculate the flow rate due ... |
Problem Statement: What’s New in V11: New Detailed Material and Labor Line for Ducts | Solution: Currently for round and square ducts the material and labor line items do not contain the duct diameters. As a result it is not possible to distinguish between two duct line items of the same material but with different duct diameters in the unit rate file. To solve this we have added the duct diameter in the... |
Problem Statement: What’s New in V11: Add Equipment Fireproofing to Horizontal Vessel Saddles, Heat Exchanger Saddles, and Air Cooler Legs | Solution: Equipment fireproofing has been added to the following equipment models which include heat exchangers, reboilers, and horizontal tanks
DHE FIXED T S
DHE FLOAT HEAD
DHE U TUBE
DHE PRE ENGR
DHE TEMA EXCH
DHT HORIZ DRUM DHT DESALTER
DHT JACKETED
DHT MULTI WALL
DRB KETTLE
DRB THERMOSIPH
DRB U TUBE
Equipment firep... |
Problem Statement: How do you display small values (less than 1e-20) in the sensitivity results form? They are reported as zero by default. | Solution: Unfortunately, there's no option presently to display the variables with small values. However, as a work-around, you can use an expression to scale up the value:
This will display the value multiplied by 1e20.
Keywords: sensitivity results
References: None |
Problem Statement: Example of an extracted steam turbine | Solution: Extracted steam turbines are used when a constant pressure steam flow must be extracted for process purposes. In these types of turbines, the power generated can be maintained at a steady level despite variation in the process steam demands.
Part of the steam is extracted from the turbine stage to heat feed ... |
Problem Statement: What’s New in V11: Specification of Unions, Couplings and Bushings in Conduit Plant Bulk Form | Solution: The system estimates conduit elbows, fittings, unions, seals, couplings and bushings for all conduit runs in a project. Currently, the number of elbows, fittings and seals can be specified for electrical and instrument conduit plant bulk items. However, the number of unions, couplings and bushings are only sy... |
Problem Statement: How to define custom instrument for Incoming and outgoing flow rate in AtOMS? | Solution: ThisSolution provides an idea as to how to define custom instruments for an AtOMS model for Flow rate.
Using the AtOMS Admin Tool , you can define custom instrument naming FLOW_R (For Receiving rate) & FLOW_D (For Dispatching Rate) or any other name that you prefer.
You can then map these instruments to IP.21... |
Problem Statement: How to model “Combining Redistribution” in Aspen Plate Fin exchanger (EDR)? | Solution: During “Combining Redistribution”, a stream present in a set of layers changes its conditions (Temperature, Pressure, flow, composition, physical properties) at a specific point along the exchanger core. It is called ‘combining redistribution’ because this change is usually caused by mixing the stream present... |
Problem Statement: How can I use automation to modify and save as a new event in APS? | Solution: The following automation can be used to get an existing event, make changes in the event and save the event as a new event.
==================================================
Sub copyevent()
Dim evntcoll As New orion.EventsColl
Dim originalevnt As orion.EventItem
Set originalevnt = evntcoll.ItemByEventSeq... |
Problem Statement: Why the Reid VP at 37.8C stream property is showing a negative value? | Solution: Reid VP at 37.8 C sometimes seems to be negative when the unit set is set to measure pressure as gauge pressure (psig, for example). If this is changed to measure pressure as absolute pressure (psia, in this case) the Reid VP at 37.8C value will be a positive number.
Additional information can be found on th... |
Problem Statement: When rating an air cooled exchanger, EDR cannot generate a tube layout with my input of number of tubes per bundle.
It also generates an error message 3008: | Solution: With a Bundle type of Staggered-even rows to left, 4 tube rows, the number of tubes shall be multiple of 4. Otherwise, EDR will not be able to run the model. The exchanger layout in the current datasheet is not fully supported.
For more details, you could check the knowledge article below:
How to prevent Re... |
Problem Statement: RadFrac with Column Analysis now supports custom trays for rating calculations. | Solution: Starting in V11, now RadFrac with Column Analysis supports custom trays for rating calculations only.
You can use custom trays to model innovative or unusual tray designs not covered by the specific tray types available in Column Analysis. For these trays, you specify key parameters such as the fraction of a... |
Problem Statement: Aspen CimIO for OPC fails to connect to an OPC DA Server with a “Class Not Registered” error. | Solution: The error indicates the OPC DA Server in not registered correctly. Therefore the entries in the registry for this OPC DA
Server should be verified and changes made if needed.
Locate the COM application in DCOM Config.
R-Click on the application and select Properties.
Copy the Application ID.
Open the system... |
Problem Statement: What’s New in V11: Add Saddle Height Field to Horizontal Vessels and Heat Exchangers | Solution: A saddle height field has been added to the following equipment models, which include heat exchangers, reboilers, and horizontal tanks:
DHE FIXED T S
DHE FLOAT HEAD
DHE U TUBE
DHE PRE ENGR
DHE TEMA EXCH
DHT HORIZ DRUM DHT DESALTER
DHT JACKETED
DHT MULTI WALL
DRB KETTLE
DRB THERMOSIPH
DRB U TUBE
The default sa... |
Problem Statement: What are some key terms used in Aspen Utilities Planner? | Solution: Demand blocks
Used to specify a demand for a certain utility. Demand blocks are available for water/steam, fuel, power, and air.
Efficiency curves
Used to show how the efficiency of a unit operation (e.g., boiler) varies with load.
Equipment design constraints
Used to specify physical limitations of the equip... |
Problem Statement: What’s New in V11: Improvements to Cable Tray Fittings and Supports | Solution: Cable tray systems are widely used to provide orderly paths to house and support cabling both overhead and beneath the ground. Currently, ACCE estimates cable tray runs with only the option to specify generic '90 degree bends' in the electrical and instrumentation plant bulk items and no option to specify sup... |
Problem Statement: What’s New in V11: 2018 Cost Basis Update - Pricing Changes | Solution: The pricing basis for this release has been updated to the First Quarter 2018. The table below summarizes an approximation of material pricing changes from the V10.1 EP2 version of Aspen Economic Evaluation (i.e. 2017 pricing basis). These results were obtained by running a general benchmark project containin... |
Problem Statement: What’s New in V11: Tube Wall Thickness | Solution: An initial tube wall thickness value is needed for sizing in order to estimate the global heat transfer coefficient and therefore needed to calculate the heat exchanger area. The value is either read from simulator data or set to a default value. In V11 the value used for sizing is no longer written back to t... |
Problem Statement: How is the “Draft at arch” reported in the API sheet calculated in Aspen Fired Heater? | Solution: The API sheet, on the Combustion section, reports the “Draft at arch”:
This draught result is the combination of all draught losses from the Firebox arch to the Stack. All the individual contributions are reported under Results | Calculation Details | Draught Details:
In this case for example, adding up the... |
Problem Statement: Is it possible to calculate partial molar properties in Aspen Custom Modeler (ACM)? | Solution: Although there are no out-of-the-box property procedures for the calculation of partial molar properties available in neither Aspen Properties nor ACM, it is absolutely possible to calculate these thermodynamic properties in ACM.
The custom model shown down below is just an example of the calculation of the ... |
Problem Statement: What’s New in V11: Add Civil to HE Spiral Plate | Solution: We are now including a factored estimate for Civil in the EHE SPIRAL PLT heat exchanger component estimated costs. An 'OTHER EQUIPMENT CONCRETE' line item will now be estimated for this item in the details in the CCP report.
Keywords: V11, new, civil, HE spiral plate, spiral, plate
References: None |
Problem Statement: What’s New in V11: Add Pipe Schedule/thickness and Flange Class for Lined Pipe and Fittings | Solution: In ACCE, lined pipe and fittings (e.g. pipe, elbow, reducer, tee, strainer) are always estimated as flanged items. The cost is estimated by adding the cost of the two end flanges to the cost of the pipe/fitting. Therefore the cost of a fitting or pipe segment of a given diameter and lined material depends on:... |
Problem Statement: Where does one go to find reliable contractors for the measurement of physical property data (pure and mixture)? | Solution: A number of contractors can be found in both the United States, Europe and Africa.
Physical Properties Contractors in the United States
1. Wiltec Research Company, Inc.
Types of experimental data equipped to measure:
Thermophysical Properties: vapor pressure; liquid densities; vapor PVT; critical properti... |
Problem Statement: Why is the tubeside pressure drop calculated differently between Aspen TASC and Aspen Exchanger Design and Rating (EDR)? | Solution: In Aspen TASC (sunsetted on 2008), the friction factor used to determine the pressure drop is based upon commercial tubes.
Starting with Aspen TASC+ (released on 2006), and subsequently renamed Aspen Shell & Tube Exchanger (EDR), the default value for the tube surface relative roughness is Smooth, which is wh... |
Problem Statement: A shell and tube exchanger consists of a bundle of tubes located inside a cylindrical shell. The arrangement allows heat transfer between a fluid flowing through the tubes and a fluid flowing over the tubes. The latter flow is usually directed by a series of traverse baffles in cross flow over the tu... | Solution: Due to the by-pass that occurs due to the constructional gaps for assembly, only a portion of the total shellside flow passes over the bundle in crossflow. The flow on the shellside of a baffled exchanger is complex and is shown in the figure below:
The various flow streams are shown where sometimes they ha... |
Problem Statement: When using the h21chgpaths.exe utility to alter the history fileset paths to reflect a new location, the result is simply to list the usage. No changes appear to be made:
eg.
h21chgpaths.exe C:\Program Files\AspenTech\InfoPlus.21\c21\h21\ E:\Archive\
Results in:
Usage: h21chgpaths old_string new_str... | Solution: The problem is caused by the fact that the backslash character (\) is acting as an escape character when it precedes extended characters like the double quote symbol.
You should replace the trailing two character combination (\) with just the double quote symbol (). Eg. For the example above, change it to rea... |
Problem Statement: How to create a user variable in ACM products? | Solution: For many instances, we may need to create a dummy variable for ACM, Aspen Plus Dynamic or in Aspen Adsorption. For an example, if we need to create a new variable for Energy demand which does not exist in any units in the flowsheet. In that case, we can go to Flowsheet > Constraint and declare the variable as... |
Problem Statement: Error message “Stream Feed1: Dynamic flash not possible with current (insufficient?) specifications” when running the depressuring tool at some time in Aspen HYSYS? | Solution: To get rid of the error message, what you would need to do will be:
1. When the feeder block pops up, select the temperature radio button. Then, press the Export Conditions to Stream button.
2. Close the feeder block window.
3. Run the depressuring utility again - it should run fine now.
Keywords: Aspen HY... |
Problem Statement: What is the recommended best practice for using data integration tools in APS? | Solution: Assuming you're looking at the staging tables for importing data (tank baselines, events, assay, etc.), in theory, both EIU and any customized interfaces will write data into these tagging tables, and functions the same way. The benefit of using EIU is, it comes with APS software and users do not have to main... |
Problem Statement: Under Convergence/ Options/ Methods/ Wegstein, how does the Wait parameter work? | Solution: Wegstein method uses the q parameter to accelerate the convergence:
xk+1 = q xk + (1 - q) F(xk)
Where s is Secant approximation of derivative:
However, for the first iteration, k = 1. We do not have an xk-1. Therefore, q and s cannot be calculated, and we have to use the Direct Substitution me... |
Problem Statement: This knowledge base article provides steps to resolve the error
[AspenTech][SQLplus] SQLplus Access Denied - No read access
which can appear in the Aspen SQLplus Query Writer, the Aspen Tag Browser or from a custom program which uses an ODBC connection to connect to the Aspen InfoPlus.21 database. | Solution: This error indicates that the Aspen Framework (AFW) or Aspen Local Security (ALS) role the affected user is in does not have read permission to the Aspen InfoPlus.21 database.
Please try the following (recreating the AFW cache files) to resolve this error:
1. On the Aspen InfoPlus.21 server:
Stop the AFW Secu... |
Problem Statement: How can I change the Control Mode (Off / Auto / Man) of a controller with either the Event Scheduler or a Spreadheet? | Solution: The Control Mode of a controller can be directly changed in its Parameters | Configuration form or with an external object, such as the Event Scheduler or a Spreadheet.
To do so, you will need to access the controller’s ‘Control Mode’ variable and set a numerical value for it from the options below, thus set... |
Problem Statement: What is does the option Update Properties on the Home Ribbon / Components Group of the Properties Environment do? | Solution: The Update Properties button can be used to refresh the parameters for components within your case, replacing the previous values with values from the built-in database. When users open a case created in a previous version, the parameters from previous versions are generally used by default. If improvements h... |
Problem Statement: How can I make sure that physical properties in ACM get calculated in the exact same way they are in Aspen Properties? | Solution: In ACM, you can use property callable procedures to compute physical / transport / caloric properties for pure components and mixtures using the property settings of the Aspen Properties file being used by the ACM model. Moreover, you can also use ACM commands to look at the pure component and binary (scalar ... |
Problem Statement: What’s New in V11: Add Electrical Conduit Type Override at Area Level | Solution: The 'Above ground conduit type' field at the project level allows specification of the electrical and instrumentation conduit material in the project, while the 'Below ground conduit type' assigns material type to the underground electrical conduit only since instrumentation cables are usually installed above... |
Problem Statement: How to add information to an input data table without manually creating the rows | Solution: When the user enter information to an input data table (i.e distillation curve, performance curves, etc), the user can directly copy-and-paste it from Excel and Aspen HYSYS will recognize automatically the data and will add the required rows to match with the Excel data.
Note: Just keep in mind to have the d... |
Problem Statement: What’s New in V11: Calculate Leg Height for Cone Bottom Vessel Based on Dimensions | Solution: The default calculated leg height for the cone bottom vessel (DVT CONE BTM), has been updated based on the dimensions provided for the vessel. Specifically, the default calculated value is based on the cone height (determined from the vessel diameter and a 60 degree cone angle) and a 2 foot clearance below th... |
Problem Statement: Why cant I select 'Actuator Failed' variable in Aspen HYSYS V11.0? | Solution: The reason users cant select Actuator Failed because in V11 this variable is OP Signal Failed.
In V10.0 (and earlier), as shown in screenshot below, the option available was 'Actuator has Failed'. If users import this variable, it was available as 'Actuator Failed'.
In V11.0, as shown in screenshot below, ... |
Problem Statement: After installing Aspen Batch Interfaces and/or Production Record Manager Server, you can see the Aspen Production Record Manager Extractor Server in the services.msc but cannot find the Batch Extractor Administrator GUI. Where is it? | Solution: In order to install the Batch Extractor Administrator, select Aspen Administration Tools product group within the branch of the tree headed aspenONE Manufacturing Execution Systems:
No file shortcut to the Batch Extractor Administrator GUI is automatically created; locate the file using File Explorer and cre... |
Problem Statement: What’s New in V11: Automated Risk Analysis Model and Reports | Solution: Estimators frequently need to use estimate and engineering data to assemble a stochastic-based risk analysis model and use third party tools to perform risk analysis. The new Risk Analysis feature allows estimators to conduct cost risk analysis within ACCE using a Monte Carlo Simulation approach.
The results ... |
Problem Statement: How to resolve the “.NET Framework” error while trying to new Layer on existing gas bed? | Solution: Please follow these steps to create a new Layer set range to get rid of this error:
Go to Variable Find
Type “LayerSet” and hit “Find”.
Right click on the bed name and select “Properties”
Modify the range of Layer as needed. Hit Apply and OK.
This will now enable to add more Layers without the .NET error.
Ke... |
Problem Statement: Why a window which says ‘Clipboard copy is not implemented’ frequently pops up in Aspen Energy Analyzer? | Solution: It is found that the problem is caused by on-line dictionary programs like Bing Dictionary. As the dictionary program uses clipboard frequently when it is activated, there are conflicts with these two programs. The problem will disappear if you close the dictionary programs.
Keywords: AEA Clipboard
Referen... |
Problem Statement: How can I define the color and style of the material streams in my Aspen Plus model? | Solution: There are two very easy ways to change both color and style of material streams in the flowsheet:
1) Right-click on any material stream in the flowsheet and select the ‘Color and Style…’ option.
The ‘Color and Style’ window will appear and you will be able to set the outline color, weight (width) and style ... |
Problem Statement: How can I find the breakdown of the functional groups used by Aspen Plus when doing an estimation calculation based on molecular structure? | Solution: It is possible to get information on the functional groups and the number of occurrences that Aspen Plus uses when trying to do an Estimation. To obtain such values follow the instructions below:
Increase the Diagnostic Message Level to at least 6 for Physical Properties (SetUp | Specifications | Diagnostics)... |
Problem Statement: How can I access pure component temperature dependent parameters in Aspen Custom Modeler? | Solution: Pure component property parameters can be retrieved using physical property procedure calls. For temperature dependent parameters, you need to use the procedure pParamT.
This example attempts to do the following:
1. Retrieve the PLXANT parameters (T-dependent) for two components.
2. Use the retrieved parame... |
Problem Statement: What is the exact modification of mass-transfer coefficients in rate-based simulations for structured and random packings when applying the RateFrac model? | Solution:
Keywords: RateFrac, Tsai, mass-transfer coefficients, dimensionless
References: s
R. E. Tsai, F. Seibert, B. Eldridge and G. T. Rochelle, A Dimensionless Model for Predicting the Mass-Transfer Area of Structured Packing, AIChE J., 57, p. 1173, 2011.
Private communication, Raschig GmbH, November 29, 2011. |
Problem Statement: Why do I get “Error 3510: There is no buoyancy pressure drop calculated for a no fans case on EDR Air Cooler? | Solution: In an Aspen Exchanger Design and Rating (EDR) Air Cooler model, you can specify the Fan configuration for the type of draft in the process.
In processes that use natural convection, it is common to have Induced draft (Air Cooler with fans, induced air is sucked through the bundles) or a No Fans configuration... |
Problem Statement: How can a vent with a reducer at the Flare Tip be modeled in Aspen Flare System Analyzer? | Solution: This system can be set up by modeling the flare stack as a pipe with a reducer at the end and then another pipe with zero length, used to define the reducer dimensions.
Do not forget to add a flare tip at the end of the network so that the flowsheet gets fully defined. Please refer to the attached example fi... |
Problem Statement: Can composition data be copied and pasted onto a source composition form? | Solution: If the user copies all the composition values of a source in Aspen Flare System Analyzer (AFSA), it will be absolutely possible to paste them all at once on the composition form of another source, even in a different AFSA model. In other words, users can copy over the composition values for all components at ... |
Problem Statement: How to fix recipes in multiple blend events? | Solution: In Aspen Refinery Multi-blend Optimizer (MBO), to fix recipes in multiple blend events at the same time, you can first select blend events you would like to change, right-click and select Fix Recipe to fix the recipe for multiple events.
Keywords: None
References: None |
Problem Statement: Can Aspen Plus optimize on integer variables, such as feed stage to column? | Solution: The Aspen Plus Optimizer is designed to work with real continuous variables only; however, nothing prevents the user from setting up a problem that varies an integer variable. The algorithm assumes that the manipulated variable is a real variable, but when the value is passed to the block, it is truncated to ... |
Problem Statement: How to run a Sensitivity Analysis to tabulate Phase Equilibrium results? | Solution: Tabulating K-values (V-L equilibrium constant) for a mixture can be useful when we evaluate the performance/results of a thermodynamic model. A FLASH2 block calculates K-values for each component, but this variable is not accessible through a Sensitivity Analysis, so it wouldn’t be possible to evaluate K’s at... |
Problem Statement: What’s New in V11: Option to Estimate Push Buttons with Motor Operated Valves | Solution: If a Motor Operated Valve is specified in an instrument loop (installation bulks), ACCE currently do not automatically create a pushbutton station for the electric actuator. Users would like an option to include pushbutton stations for the motor operated valves estimated in the project.
To enable this capabil... |
Problem Statement: What are the PSC products and how they are licensed? | Solution: PSC products are comprised of the following products:
Licensing:
Baseload Products – Charge by per site.
Aspen PIMS (50)
Aspen Supply Planner (55)
Aspen Petroleum Supply Chain Planner (35)
Aspen Inventory Management and Operations Scheduling (20)
Aspen Fleet Optimizer (30)
Tokens are consumed permanently a... |
Problem Statement: How can I estimate the overall amount of vapor emissions generated by a batch process? | Solution: The best way to do this is to send all the final streams for each Vapor Emission Paths to an Inventory Location - Vapor. The Excel report Composite Vapor Emission Streams will then report the overall amount of vapor emissions sent to that inventory location.
The attached example uses this approach to calcula... |
Problem Statement: Is there any example file user can refer for modeling the column with overhead heat pump? | Solution: There is an Aspen Plus V9 example and an Aspen HYSYS V9 example uploaded in Attachments section for reference.
If you already have Process Flowsheet Diagram (PFD), mass balance and energy balance information, it is easy to build model in Aspen HYSYS or Aspen Plus.
If you are trying to build this kind of pro... |
Problem Statement: How can I export an Economic Evaluation project scenario and then import it back in a new project? | Solution: If a project is partially corrupted, it can be useful to export its project specs as a SPECS (*.ic2) project file and then import it back on a new project.
Open the Economic Evaluation software and select the desired project
Go to File | Export to SPECS File
Browse to the desired location and create a new fol... |
Problem Statement: A problem arises when you have more than one hot and/or cold utility. You must determine the optimum usage levels of the available utilities which will minimize operating costs, and satisfy the overall utility target requirements. How to allocate utilities load using GCC (Grand Composite Curve) based... | Solution: The GCC Based Method uses the Grand Composite Curve to allocate utilities (Linnhoff et. al. 1982, Parker 1989). The general heuristic is to maximize the use of the cheapest utilities. This is based on the assumption that the least expensive utilities are the hottest cold utilities and the coldest hot utilitie... |
Problem Statement: How are the semi-dynamic flash calculations carried out in the Fire Scenario of the Safety Analysis Environment? | Solution: The semi-dynamic method first carries out an initialization as follows:
1. Flash the reference stream at operating conditions to get the liquid and vapor
2. Re-mix according to the relative masses of liquid and vapor based on the stated liquid level
3. Apply constant density flash at relieving pressure
4. Cal... |
Problem Statement: How to add several sets of physical property parameters to accurately representing physical properties in different operating conditions? | Solution: Most parameters used in property models can have more than one set of values for a given component or pair of components. To enter several sets of values for a parameter, you must use a separate Parameters form (with a unique ID) for each set of data.
For example, you can use this feature when you use one s... |
Problem Statement: What’s New in V11: Reporter Economic Evaluator (EE) Functionality and Usability Upgrade | Solution: The EE reporter has undergone significant changes to upgrade its functionality and usability.
The reporter database new features include:
“Crystal reports” items are replaced with SQL Server Reporting Services (SSRS) also known as Report Definition Language (RDL) generated reports.
A new SQL Server database i... |
Problem Statement: Why the Microsoft Access databases no more work in Aspen Utilities Planner V11? | Solution: Starting from V11, all databases used for Optimization need to be configured in SQL server databases.
All existing Microsoft Access Databases must be converted to SQL databases (.mdb) before running Optimization in V11. A conversion tool is supplied with the V11 installation media. This tool can be found in:
... |
Problem Statement: When performing distillation synthesis, in the azeotrope search report there are three classifications for pure components and azeotropes: stable node, unstable node and saddle. What are their differences? | Solution: Pure components and azeotropic points are called nodes. Three different types are possible:
Stable node: This is the pure component or the azeotropic point with the highest boiling temperature and lowest vapor pressure in a distillation region. All residue curves end at stable nodes.
Unstable node: This is ... |
Problem Statement: This | Solution: frames to select what user can access to specific APC applications.
Solution
In this case I have two users: student with admin privileges and instructor with operation privileges, and two applications named: testcol and acol.
The target here is to make only testcol and acol available for the user instructor ... |
Problem Statement: Flare KO drum내 조성(composition) 기입은 왜 필요한가요? | Solution: KO drum 의 용도는 Flash통해 발생된 liquid product성분을 분리하기위함입니다.
만약 KO drum의 outlet product가 순수100% liquid일 경우, vapor outlet은 발생하지 않을 것이며, 이로 인해 전체 flarenet software 수렴에 문제를 야기 할 수 있습니다.
따라서 이러한 수렴오류 방지를 위해, flarenet제품은 KO drum내 가장 light gas성분의 조성(<0.001% by default)을 vapor outlet조성으로 사용합니다. 물론 user가 이러한 값을 직접 입력도 ... |
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