question stringlengths 19 6.88k | answer stringlengths 38 33.3k |
|---|---|
Problem Statement: I have a weight based model but I want to add a constraint for a certain feed to my submodel to be in volume. How can I do this? | Solution: Add an E row for SPV to convert each stream in volume. Then, sum the new columns and put a constraint. An example is shown below. This is a small excerpt from a SCCU submodel in our Weight Sample model. Notice the two ESPV rows transfer the weight activity into columns BP1 and BP2 using the SPV's and the V... |
Problem Statement: How is the PrUnitOperationUtility table's FeedFlag field in the PIMS output DB is generated? In other words, how does PIMS decide which Utility in the unit is a feed or a yield when writing Results.mdb? | Solution: The feed flag is calculated based on the balance in a submodel for the result.mdb of the given run. The setting will imply whether the stream is consumed or produced in the given submodel. If it is consumed than the flag is 1 (feed), otherwise it is 0.
For detailed calculation please see enclosed excel examp... |
Problem Statement: What does function NLUNKOWN mean in Matrix | Solution: In the Matrix Analyzer, the function NLUNKNOWN(variable1, variable2,…) indicates that this is a non-linear equation with unknown definition. In other words, the exact formulation of the equation (variable1*variable2 or Variable1^3+Variable2^3).
To get the definition, PIMS needs to make an external call, e.g. ... |
Problem Statement: I see ABML correlations to go from D86 percent off values to TBP temperatures, but how can I convert from D86 percent off to D86 temperatures? | Solution: Using the ABML correlation called ABML_D86FROMPERCENTOFF, allows the user to select the method used for converting D86 to TBP. However if no such conversion is desired, the method NONE may be specified. In this case, the correlation will generate D86 temperatures, not TBPs.
Keywords: distillation, D86, TBP
... |
Problem Statement: When you try to commute a license, you get the message window below. However, you are commuting from a physical machine on which Window 2008 Server is installed. Why is this message appearing?
The licensing system is unable to commute a license to a standalone machine while running a Citrix or Termi... | Solution: Just as the message indicates, by design, you are not allowed to commute a license from a terminal server.
A terminal server could be a physical machine which has terminal service installed. Windows 2008 Server comes with terminal service installed. Thus, SLM commute detects the system as a terminal server.
Y... |
Problem Statement: Ranging Analysis is one of the features in the Aspen PIMS Advanced Optimization package (PIMS-AO). It is a tool to analyze the minimum and maximum range for feeds/products/capacities at or near optimal | Solution: .
The first step is to establish a base. Once we have the optimalSolution for this base case, we set the allowable percent giveaway in the objective function. During the Ranging Analysis, PIMS will minimize the lower bound for each selected variable and maximize the upper bound for each selected variable whil... |
Problem Statement: How do I determine if I need to address warning W073?
** Recursion Tolerances for RFG/CARB/CARB3 Property XXX May be too Large | Solution: The EPA equations are very sensitive to certain properties and if there is a significant difference between the calculated quality and the quality combined with its error, the pollutant calculation produces errant results. This message is triggered when RTOL > 0.01 or ATOL/value > 10 * RTOL.
Compare the val... |
Problem Statement: Using Assay Management, I have created some customized assay data. I need to make this data available to all the other Aspen PIMS users in my company. How can I do that? | Solution: The user library is saved in the user profile folder:
(e.g., C:\Users\YOURNAME\AppData\Local\AspenTech\Aspen Feedstock Assay Manager)
The file name is UserAssayLibrary.aal. This file can be sent to other users. They can place this file in their profile folder and will then have access to the ... |
Problem Statement: When importing assay data in Aspen Assay Manager using templates, is it possible to add more cuts to the templates and is there any maximum number of cuts that can be imported? | Solution: Aspen Assay Manager comes with a default example template which can be used to import assay data. This template file is called DemoAssays_GCinput and can be found in the following location:
C:\Users\Public\Documents\AspenTech\Aspen PIMS\Library\Aspen Assay Management
This template file is totally freeform and... |
Problem Statement: I have many parameter rows in my model, I would like to report them. In which reports I can report these parameter rows? | Solution: 1. FullSolution Process Submodel Summary
2. PROWS.xls, available in Model Settings | Reporting | Selection | XLS | PROWS
Keywords: Parameter rows
P rows
PROWS.xls
Process Submodel Summary
Report
References: None |
Problem Statement: What is the Gas Volume to Weight Factor (GVTW) Factor in Aspen PIMS? | Solution: Aspen PIMS uses 60 deg. F and 1 Atmosphere as the standard for the default GVTW factor. As with the VTW factor, the user is responsible for making sure that the GVTW factor is consistent with the other unit measure text labels entered in the general model settings for VOL, GAS and WGT and with the SPG data en... |
Problem Statement: Aspen Platinum Server supports two types of databases, Microsoft Access and SQL server. This knowledge base document describes how to access these databases from the Aspen Platinum server. | Solution: 1. Go to Start 'Aspen PIMS Platinum Sever Setup' from Start | All Programs | Aspen Tech | Planning,
2. Click 'Setup' to add 'Data Source,
There are two database options to select from, PIMS (Access) and PIMS (SQL Server)
1) If you select Access Database, you have to copy PIMS access database .... |
Problem Statement: In | Solution: 134186, we talked about that there are 3 dlls related to new matrix generator model loading
PimsModelData.dll
PimsModelLibraryForms.dll
PimsModelLibraryFormsWrapper.dll
One way to check if the dlls are the issue for XLP is to check if the table is loaded. For example, you can check if the tables are in the ... |
Problem Statement: This knowledge base article describes how to resolve the following error that may be encountered when launching 'Aspen PIMS Platinum Server Setup' from the Windows Start menu
           Server Error in Application Default web site/ASPENTECH/PIMSPLATINUM
           HTTP Error... | Solution: This error message is caused by improper Internet Information Services (IIS Security) setup. To resolve the error follow these steps.
1. From Control Panel | Programs and Features, Select 'Turn Windows features on or off' on the left,
Â
Â
2. Find Internet Information Services (IIS) and make sure 'Windows ... |
Problem Statement: Which license key is needed for Aspen PIMS Platinum and Aspen Assay Manager for V8.4 and earlier releases? | Solution: You need a new license key in order to run Aspen PIMS Platinum.
You can check if your license file includes specific license keys using the Aspen 'SLM License Profiler'. Look for the following keys shown in the screenshots. If you do not have the key 'SLM_RN_ALL_PLNSCHDINTF' you will not be able to run Aspe... |
Problem Statement: How can I fix the error message: Failed to create PIMS Model Settings Treeview ? | Solution: For this specific problem the error show in screen shot pops up whenever the user tries to open a PIMS model (any model, even volume sample model). This error goes away after un installing GLOBAL VIEW, a third party software.
Keywords: PIMS model settings tree view
Tree view failed
Failed to create PIMS model... |
Problem Statement: The Property Calculation formula dialog box used to have a check box Inversion. I no longer see this. | Solution: The Inversion option is no longer necessary and was removed. PIMS now automatically detects if an index specification is used to replace the quality specification and the sense of the spec row must be changed from a min to a max (or vice versa).
Keywords: inversion
property calculation formula
References: Non... |
Problem Statement: How can you define new crudes as combinations (blends) of existing crudes in the Aspen PIMS model?
Another Statement
I have two crude towers. Feed stream for each crude is from same tank.
It means, feed quality for each feed is always same.
How can I make it? | Solution: Table CRDBLEND allows to define new crudes as a blend of two or more existing crudes. The resulting crude has to be treated as any regular crude, i.e. it has to be purchased (T. BUY) and lined up to the destination crude units (T. CRDDISTL).
The resulting yields and properties of the crude will be calculated ... |
Problem Statement: In addition to the ABML (Aspen Blending Model Library) blending methods, UBML (User Blend Model Library) provides the ability to incorporate user-defined blending correlations into the model.
How do you set up UBML? | Solution: The user defined UBML blending methods are stored in a file created by the user called PUBML.dll. This file has to be pasted into the Aspen PIMS installation folder, which by default is:
C:\Program Files\AspenTech\Aspen PIMS
The Aspen PIMS sample models that use AMBL and UBML provide this PUBML.dll file. Fo... |
Problem Statement: How do I enable Queries for Aspen Report Writer in Aspen PIMS V 7.1 and above? | Solution: Aspen PIMS generates output file Results.Mdb, with all necessary output data. This is a Microsoft ACCESS type of Database and it required Database Views to work with Aspen Report Writer.
To create Aspen Report Writer Queries, Aspen PIMS users needs to enable the option, so that Aspen PIMS generates all requir... |
Problem Statement: This article describes the key tuning parameters that can be adjusted to improve convergence for Aspen PIMS-AO models | Solution: The ?Pre-solve? Option
Aspen PIMS includes a Pre-solve options for XPRESS. The goal of the pre-solve option is to eliminate redundant rows in the LP matrix which cause increased running time, but do not contribute to the optimalSolution.
The pre-solve option appears in the Model Settings | LP | Options tab. I... |
Problem Statement: There are two types of usual constraints in process units:
Flow related (e.g. the feed to the unit, one of the products, etc.)
Property or Process Parameter related (e.g. the sulfur of the feed pool, the severity or conversion of a unit)
To model the first type of constraint, table CAPS is used to im... | Solution: For a Minimum specification:
For a Maximum specification:
As
The specification equations become:
For a Minimum specification:
For a Maximum specification:
These are the equations that are modeled internally when setting up limits using table PROCLIM.
There are differences in modeling when you try to... |
Problem Statement: What user rights are needed in order to install Aspen PIMS or use Aspen PIMS? | Solution: To install Aspen PIMS, the user needs to have an Administrator privilege. However, a regular user privilege can run Aspen PIMS.
Keywords: Admin, Administrator, Power user, user, users, installation, install, PIMS
References: None |
Problem Statement: When checking the Results.MDB file for an XPIMS model, in Table: PrEconomicSummary, Field: EconomicSummaryTypeID = 4 (Local Utility Costs), why are the results for the individual plants all 0 but the overall grand total is OK? | Solution: Contrary to the headline the PrEconomicSummary table contains both GLOBAL and LOCAL utility cost data. The GLOBAL costs are in the EconomicSummaryTypeID=4, Description=Local Utility Costs while the LOCAL costs are in the EconomicSummaryTypeID=9 &10, Description=Utility Purchases & Utility Sales.
Here is a qu... |
Problem Statement: How do I plot an envelope on a wet basis? | Solution: [NOTE: This only works if the stream is two phase. If there is enough water to give a separate aqueous phase, then this approach does not plot a full 3phase envelope because the vf=1 flashes are not enough to distinguish between water and HC dewpoints.]
You can use the Property Table utility to generate such ... |
Problem Statement: Aspen PIMS Advanced Optimization (PIMS-AO) Analysis tools include:
Parametric Analysis
Goal Programming
Ranging Analysis
Feedstock Basket Reduction
Each of these analysis tools will execute a set of automatically generated cases. Starting with Aspen PIMS V7.1, it is possible to generate | Solution: and report files for each of the intermediate steps in the analysis.
How do you force the creation of these reports and what are the file names?
Solution
In the Run windows for each of the PIMS-AO Analysis tools, the option Write Each Solve to the Database can be chosen. When this option is active, it will cr... |
Problem Statement: How does PIMS create PROCLIM limits in the matrix? | Solution: We can use Table PROCLIM to apply model constraints in a PIMS model. In the following example, we want to limit AR2 in Cat Crack Feed. In submodel SCCU, we set up a row ZLIMARC, then in T.PROCLIM we set up MIN/MAX to limit AR2.
* TABLE
SCCU
CAT CRACKER UNIT
*
TEXT
BAS
AFC
SUL... |
Problem Statement: When only PSCP is installed, the user might encounter the following warning message when attempting to execute Matrix Comparison after running PSCP: | Solution: The workaround is to either:
Install PIMS before or after PSCP installation, or
Go to a computer where PIMS is installed, find SharedResDll.dll in the PIMS install directory, place that file in the same directory where MatComp.exe is installed on the computer that has PSCP installed.
Keywords: DPO, Installat... |
Problem Statement: When blending with an additive there are original and recursed susceptibility values in the Recursion Log Report. How these values are calculated and how they are used to calculate the amount of additive used? | Solution: Simple example of Specification Blend based on minimum MON required:
1. In order to calculate the Original Susceptibility of MON in blend product BLE, PIMS subtracts the arithmetic average MON from the arithmetic average M11 blend stock values:
2. To calculate the Recursed Susceptibility of MON in... |
Problem Statement: A model is using table INDEX or Property Calculation Formulas to calculate property index, for example RVI=RVP^1.25. RVI is specified in Table BLNSPEC. Aspen PIMS should report both RVI and RVP in the full | Solution: report for that blending product. However, the RVP value is not equal to the the value back calculated from RVI^(1/1.25). What could cause a discrepancy between the reported RVP value and the corresponding RVI index?
Solution
Take volume sample model as an example. We modified the PGUESS by adding a column RV... |
Problem Statement: How do I know if I have a network version of HYSYS? | Solution: If you are looking on the HYSYS software CD, there will be a sticker with an install code and S/N number. The S/N number is the key number. It will say NET on the sticker if you have a network version. Also, the key will be a beige colour and will go on the parallel port while the stand alone keys are a green... |
Problem Statement: Why are the baffle cut percent height and percent area values the same in my heat exchanger datasheet? | Solution: Aspen HYSYS reports the same values for the baffle cut (%height) and baffle cut (%area), but they are not the same. In this case, you have to be aware that:
The correct baffle cut is defined as
Baffle Cut% = Hb / Ds * 100
In the above equation, Hb is the height of baffle window and Ds is the internal diameter... |
Problem Statement: I would like to add a Reid Vapour Pressure (RVP) specification to a column stream but cannot find it under Column Cold Properties Spec - where is it? | Solution: An RVP specification can be added under Column Vapour Pressure Spec (select Reid Vapour Pressure as ''type'').
Keywords: vapor
References: None |
Problem Statement: If I have a model that was developed in a language environment other than English, how can I display Aspen PIMS | Solution: s with the text in that language even though I am using an English Windows Operating System?
Solution
You need to make sure that you have the proper language and code pages selected from the Regional & Language Options dialog in the Windows control panel.
The following steps are for Windows XP.
1. Under CONTR... |
Problem Statement: Does the Assay Manager support PIMS extended tags? | Solution: No, it does not. All tags are 3 characters long.
Keywords: AFAM
References: None |
Problem Statement: What is the basis (volume or weight) of true boiling point (TBP) curve? | Solution: The default basis of TBP curve is volume%. You can change the basis under Design tab of Boiling Point Curve utility.
Keywords: TBP, true boiling point, basis, weight, volume, %
References: None |
Problem Statement: How do I transfer information from HYSYS to HTRI? | Solution: The latest releases of the HTRI Software include interfaces which will read exchangers from Aspen HYSYS cases. The HTRI interface is free to users of HTRI products (as it is built into the HTRI software).
This utility is the only way to transfer data for a heat exchanger from Aspen HYSYS to HTRI if the applic... |
Problem Statement: Why am I getting the message Required model files have not been selected for COMThermo when I try to enter the Simulation Environment? | Solution: You must have a property package selected for both the vapour and liquid phases before you try to enter the Simulation Environment.
Keywords: COMThermo
References: None |
Problem Statement: Getting OLGAS, Pipesys and black oil license errors, do I still entitle OLGAS licenses provided from AspenTech? | Solution: Contract signed after 1 Nov 2010 - The client needs to work with SPT group. Aspentech will not provide customers licenses anymore.
For OLGAS and Pipesys to work WITHOUT SLM licenses (contracts signed after Nov. 1, 2010) customers need to have V7.3 or V7.2 CP2.
Contract signed before1 Nov 2010 - Our license s... |
Problem Statement: I get an error The Property Wizard could not be launched. Please make sure it is installed and that the amf file is in the correct directory. How to fix it?
Property Method Assistant does not launch. How to fix it? | Solution: 1. PropertyMethodAssistant.amf file should be present in C:\Program Files\AspenTech\Aspen HYSYS (version)\Support folder. If you don't have this file, please copy it from another computer and put it there.
2. If you already have the file in the folder, run Restore File Associations (Start || Programs || Aspen... |
Problem Statement: How do I find a component by CAS number in Aspen HYSYS? | Solution: Users will need to use ?Aspen Properties? component databank, when search by CAS number is desirable.
1. Select ?Aspen Properties? from Component List interface, and click ''Add''.
2. An Aspen Properties Component Databank window will pop up. Click ''Launch Find Component Window.
3. The comp... |
Problem Statement: What is New in Aspen HYSYS V7.3 - Modeling of Spiral Wound Heat Exchangers | Solution: Liquefied natural gas (LNG) facilities are important assets for energy companies. In LNG plants, the cold box is often a spiral wound heat exchanger that exchanges heat between multiple streams in a complex pattern.
The HYSYS LNG Exchanger unit operation model now includes an option to simulate spiral wound h... |
Problem Statement: What is the difference between the information on the first page and on the second page of Hydrate Formation utility? | Solution: The information shown on the first page of Hydrate formation refers to the stream conditions, temperature AND pressure. What you see on the second page tells you the hydrate formation pressure at the current stream temperature and the hydrate formation temperature at the current stream pressure. If the operat... |
Problem Statement: How can I determine which flowsheet environment is currently active via Automation? | Solution: In HYSYS versions prior to 3.1 this is a particularly important question since topology changes (e.g. adding streams / operations) can only be made when HYSYS is in the environment of the flowsheet where the changes are to be made. This limitation no longer applies for HYSYS 3.1+.
In HYSYS you can tell which ... |
Problem Statement: Which equation is used for phase change in Heat Exchanger? | Solution: Heat Exchanger in Aspen HYSYS uses open literature correlations for calculating film coefficients and pressure drops.
Please see the attached PDF document for more details.
Keywords: Heat Transfer, Coefficient Correlations
References: s:
1. Gnielinski, V., Forced Convection in Ducts. In: Heat Exchanger De... |
Problem Statement: MAXSTEP and MAXSTEPD options are available in Model Settings | Recursion | General when user runs the model with Distributive Recursion (DR), which is by default. What are these options used for? | Solution: In general, MAXSTEP is used to assist models that have problem in convergence to converge quickly. It imposes bounds on how much the error vectors can change in each pass, and therefore by using this option the user is actually adding more constraints to the model. Using MAXSTEP could lead to a differentSo... |
Problem Statement: When you have a simulation with many streams and unit operations it might not be as easy to find an object especially when the case was built by someone else. | Solution: Go to the Tools menu and choose the first option: 'Select Objects'
This will open a new window where you will be able to browse through the different objects on the PFD. Browse through the names or select one of the filters available to display only streams, unit operations, logical operations or other spec... |
Problem Statement: What is the differences between PROFES and HTFS? | Solution: Profes calculates the Nusselt number using the Dittus-Boelter equation for turbulent flow and uses a value of 3.66 for laminar flow. In the transition region of flow (Reynolds numbers between 2000 and 5000), this correlation will use a Nusselt number that lies on a linear extrapolation of the Dittus-Boelter e... |
Problem Statement: How can I create a minimum selector (or maximum selector) for controller? | Solution: You can use the Selector Block, where you connect your input PV's, then select a mode of operation, i.e. Minimum, Maximum, Mean, etc.. For more details regarding the selector block please consult Section 12 of the Aspen HYSYS v2004.1 Operations Guide Manual.
Keywords: Controls, selector block
References: None |
Problem Statement: How do I import the output file from the Text to File option into Excel so that the data goes into individual columns? | Solution: It is important to select the proper delimiter. This may be either a comma or a space, depending how the file was setup when printed. This will depend on how your options are configured.
Use the Text File Import wizard in Excel to select this delimiter. This wizard should be automatically started once you sel... |
Problem Statement: How do I find the Activity of a | Solution: Variable, from the LP Matrix in Aspen PIMS?Solution
Aspen PIMS using DR Technology generates two files related to matrix structures.
1. MpsProb.MPS
2. MpsBcd.Mps
(ReviewSolution 130370 for details about those two Matrix files.
Assume, you would like to see the Activity of a Variable called DCN, ... |
Problem Statement: Is it possible to access the Air Cooler Operation through Automation? | Solution: Yes, although this cannot be achieved with any of the standard Automation methods. Since the Air cooler operation is not yet fully wrapped for Automation access - you will note there is no Air Cooler object in the HYSYS type library.
Instead a 'Backdoor method' must be used.
NB. Backdoor methods are only reco... |
Problem Statement: Why do some petroleum properties show [empty] for some streams? | Solution: There can be multiple reasons for it:
1. The library components added to the model does not have petroleum properties added to the purecomponentpetroleumdata.csv file (C:\Program Files (x86)\AspenTech\Aspen HYSYS V7.3\ReactorModels)
Solution
Open the file in Notepad++ and add the missing components in the bo... |
Problem Statement: This knowledge base article describes why E200 and E300 may show as zero for the final blend. | Solution: This problem may happen if in Table PGUESS; the input values for Evaporative ABML correlation do not monotonically increase, which causes the Evaporative calculation to fail. Monotonic means that the numbers always increase or stay the same without decreasing. When the values are modified such that they monot... |
Problem Statement: How can you model a static property that has a different value in a different period? | Solution: Table BLNPROP supports a period specific input. By adding the one character period identifier as the 4th character to the material tag, the value for the property becomes specific for that period.
The example shows how to enter three different SPG values for a Purchased Gasoil stream in three different period... |
Problem Statement: Is there a maximum stream velocity for Aspen HYSYS Pipeline Hydraulics - PIPESYS calculations? | Solution: PIPESYS permits a maximum velocity of 2000 ft/s. Generally, convergence problems in Pipesys are related to high velocity, low pressure or small diameter.
Keywords: Pipesys, velocity
References: None |
Problem Statement: How to use the user variable to compute the viscosity with different compositions in the stream? | Solution: Here is an example code how to change the composition, flash and get the new viscosity based on new compositions.
Sub PostExecute()
Dim hystream As ProcessStream
Dim hyFluid As Fluid
Dim CompMoleFrac As Variant
Dim i As Integer
On Error GoTo ToError
Set hystream = activeobject
' random composition
Set hyFlu... |
Problem Statement: Every time I try to increase parallel shell passes (any value above 1) in a Rating Exchanger, it doesn't take it? | Solution: Multiple Parallel Shell passes is not supported in Hysys right now.
Keywords: Heat Exchanger
References: None |
Problem Statement: What is the calculation sequence for an extension? | Solution: When a change is made to a variable which affects the extension, HYSYS performs a Forgetting pass and two Calculation passes.
The Forgetting pass is used to identify the streams, unit operations, etc. affected by the change.
The first Calculation pass is used to allow the extension to complete its internal ca... |
Problem Statement: When I change values in HYSYS via Excel VBA it takes a long time to solve and I get the message Microsoft Excel is waiting for another application to complete an OLE Action. Is there a way around this? | Solution: Each time VBA is used to make a change in HYSYS, code execution pauses on the line that caused the change until HYSYS has finished solving. Sometimes when HYSYS takes a long time to solve, Excel displays a modal message box like Microsoft Excel is waiting for another application to complete an OLE Action, and... |
Problem Statement: 같은 압력곡선분포도를 임의의 유체에 사용할 수 있을가요?
Please refer to the English | Solution: 131672 and ChineseSolution 132708.Solution
펌프나 압축기의 압력곡선에서의 압력은 유체와 관련되어 있다. 일반적으로 공급상은 펌프의 압력곡선정보를 제공한다. 사용자는 같은 곡선을 임의의 유체에 사용할 수 있다. 다만 출구의 압력은 유체에 따라 틀리게 된다. 왜냐하면 밀도가 틀리기 때문이다.
Keywords: pump curve, compressor curve, head, water, process fluid.
References: None |
Problem Statement: How to apply the Aspen Dynamic Pipeline Solver to sub-sea pipeline modeling. | Solution: Aspen Dynamic Pipeline Solver is incorporated into the Aspen HYSYS Upstream option in Dynamics (Aspen Hydraulics flowsheet).
Kindly refer toSolution 128977 - Example of an Aspen Hydraulics dynamic simulation of a long sub-sea pipeline.
Keywords: Aspen Dynamic Pipeline Solver, HYSYS Upstream, Aspen Hydraulics
... |
Problem Statement: How do you specify vapur fraction on mass basis? | Solution: The vapour fraction of material streams in Hysys by default is molar basis. Mass vapour fraction of a stream is a calculated value which can be added from Property Correlation Controls (or Correlation Manager) | Standard | Phase Fraction [Mass Basis]. This value cannot be modified directly by the user.
Howeve... |
Problem Statement: What is required to use Infochem Multiflash feature in Aspen HYSYS Upstream? | Solution: The following items are required for using Infochem Multiflash feature in Aspen HYSYS Upstream.
Aspen HYSYS V7.3 (or later) with Aspen HYSYS Upstream license key obtained from Aspen tech. The following license keys can be used: SLM_RN_PML_HYSUPSTRM and SLM_RN_PML_HYSUPSTRM_R3
Multiflash version 4.0 (or later)... |
Problem Statement: When I enter the Design Phase, HYSYS freezes on me. What can I do? | Solution: When running Win 98, with an expired set of license files from ASPEN (the Icarus.fil and System.ver files), HYSYS will freeze. The only way to leave HYSYS is to use Ctrl-Alt-Delete and end the HYSYS task.
In order to avoid this problem in the first place, do not enter the Design Phase unless your license file... |
Problem Statement: What are the different Hydrate Types predicted in Hydrate Formation Utility? | Solution: The only requirement for hydrate formation is that some water must be present in either the vapor or condensed hydrocarbon phase with hydrate forming components. Once favorable pressure and temperature conditions are reached (high pressures or low temperatures), the mixture of hydrate-forming molecules and wa... |
Problem Statement: Does the PR sour package allow computation of the H2s, NH3 solubility in the hydrocarbon phases? | Solution: The answer is yes. Actually H2S and NH3 solubility in hydrocarbon phases is taken care of by the PR equation of state. The word Sour comes from the Wilson's Sour API model that characterizes the ionization of H2S and NH3 in the aqueous phase. The PR Sour or SRK Sour models are specialized in representing sour... |
Problem Statement: What does the Relative Internal Flow tolerance for the recycle operation mean? | Solution: For the recycle the Actual Tolerance is calculated as follows:
Actual Tolerance = Relative Tolerance (specified by user) * Internal Tolerance (fixed)
This gives the permissible tolerance, in HYSYS internal units (C, kPa, flow per second ....) for each variable.
The table in Section 12.7.3 (Page 12-154) of the... |
Problem Statement: How can I make HYSYS automatically generate a material balance? | Solution: In HYSYS 3.0.1, a Property Balance utility was added. One of the uses of this tool is to automatically generate a mass balance. Follow these steps to set it up:
Go to Tools | Utilities and select Property Balance Utility.
Press the Add Utility button.
Press Scope Objects.
In the Object Filter box (located in ... |
Problem Statement: How does the HYSYS heat exchanger work when linked with the Exchanger Design and Rating (EDR) software? | Solution: The HYSYS heat exchanger can be linked with the EDR for rigorous heat transfer calculations. When the EDR is linked with the HYSYS heat exchanger then this always runs in simulation mode in HYSYS. In this mode the outlet temperatures and pressure drops both in tube and shell sides are calculated.
Before linki... |
Problem Statement: Why does the cold property utility give different result than HYSYS Reid VP @ 37.8 C? | Solution: The reason why cold property utility gives different result than HYSYS Reid VP @ 37.8 C is that ASTM D323-73/79 (Cold Property RVP) is wet basis where as HYSYS stream apply RVP on dry basis. If you set water composition 0.0, both cold property utility and HYSYS RVP should give the similar results. The two met... |
Problem Statement: How can I input an assay distillation curve derived from the IP480 method? | Solution: Aspen HYSYS currently has no direct IP480 to TBP inter-conversion method available.
According to the open literature on web - http://www.astm.org/Standards/D7500.htm:
ASTM D7500-08 method has been developed through the harmonization of two test methods, Test Method D6352 and IP 480. As both of these methods c... |
Problem Statement: How can you dipslay the Hydrate formation Information in a table format on the HYSYS PFD? | Solution: In-order to display the Hydrate formation utility information on a HYSYS PFD table you can use a spreadsheet as an intermediary operation. The steps are as follows:
1. Add a spreadsheet to your PFD.
2. Open the spreadsheet and click on Add Import.
3. In the window that pops up, hit the radio butto... |
Problem Statement: How can I tell if a user property is a cloned correlation? | Solution: A user property will appear under User tree under available correlations. User property may be a clone of another correlation. To tell it is clone of which property:
A? Go to Tools|Correlation manager.
A? Expand User tree under available correlations.
A? Highlight the correlation of in... |
Problem Statement: How do I configure Aspen HYSYS Stream Reporter to display results for the lower heating value (LHV)? | Solution: When trying to report stream results from Aspen HYSYS into Excel using Aspen HYSYS Stream Reporter (HSR) it is important to ensure that the variables desired are properly defined in the HSR set-up page before they are written to the output page in Excel in order for results to be displayed correctly.
If attem... |
Problem Statement: How do I convert a file from the new version of Aspen HYSYS into an older version? | Solution: Open the HYSYS file, then save it as .xml file. Open the recently created .xml file into the older version of Aspen HYSYS. Save it as an .hsc file.
The simulation will have to be run again and all the operations will need to converge again.
Please note that if the file from the recent version contains an oper... |
Problem Statement: How do I display specific volume of a stream? | Solution: HYSYS only shows molar volume in the standard property list. To obtain the specific volume you can do the calculation in a HYSYS spreadsheet either using formula
Specific volume = Molar volume/MW OR
Specific volume=1/Mass density.
After that you can display it on PFD.
Keywords: None
References: None |
Problem Statement: What is Improved in Aspen HYSYS V7.3 - HYSYS Spreadsheet Tables | Solution: Tables in the HYSYS Spreadsheet unit operation model are now customizable. The addition and deletion of columns and rows in an existing spreadsheet is now supported.
This new capability mimics the functionality in Excel spreadsheets, providing improved usability within the HYSYS Spreadsheet unit operation mod... |
Problem Statement: When user imported the Depressuring utility from very older version into later HYSYS versions, depressuring utility fails to provide results | Solution: It is due to selected flash method in the Basis Manager. If user switch to the HYSYS flash (go to the Basis Manager, view the Fluid Package and on the StabTest page choose Low for the Method in Stability Test Parameters), then the case runs OK. The HYSIM flash is not recommended for dynamics because it is slo... |
Problem Statement: Can I read a previously saved MASSBAL .dat file to be solved using the HYSYS MASSBAL subflowsheet? | Solution: Users have the option to read in previously created cases.
When this choice is selected, a DAT file must be provided, accomplished by the Open Model button that will prompt the user for a DAT file. Note that the Sub-Flowsheet Environment button is grayed out when this option is selected. This is because the u... |
Problem Statement: What is Improved in Aspen HYSYS ? Pipeline Hydraulics Modeling | Solution: The V7.3 release contained many new improvements for the modeling of pipeline hydraulics, including substantial improvements inSolution speed for steady-state flow networks, support of flexible boundary conditions, and new flexibility to model shut-in branches of a flow network. More information can be found ... |
Problem Statement: If I have a model that was developed in a language environment other than English, how can I display Aspen PIMS | Solution: s with the text in that language even though I am using an English Windows Operating System?
Solution
You need to make sure that you have the proper language and code pages selected from the Regional & Language Options dialog in the Windows control panel.
The following steps are for Windows XP.
1. Under CONTR... |
Problem Statement: I have verified that SLM Configuration Wizard settings on my machine are correct, but Aspen PIMS won't start and says it cannot find my license file. | Solution: Typical SLM configuration problems are reviewed inSolution 127067.
If you are sure the configuration is correct, there are a couple other items that should be checked. The SLM Configuration Wizard settings can be overriden by certain environment variables or an LSHOST file. Check for these by using the steps ... |
Problem Statement: When a utility defined as in both BUY and SELL table, what cost/price is used in 'Utilities Used/Produced' section in submodel report? | Solution: Starting with version V7.2, a new logic was implemented in Aspen PIMS TXT and HTML reporting. The logic is
1. if the utility is considered a feed or consumed, then the cost or purchase price is used.
2. if the utility is NOT a feed or produced, then the selling price is used.
The exception is when the utili... |
Problem Statement: What is a ratio controller? | Solution: The Ratio Controller is a special type of Feed Forward controller that maintains the ratio between two process variables. The Ratio Controller takes two inputs with the desired ratio as the SP and calculates an OP. Prior to HYSYS 3.0, this was done using a Spreadsheet Operation. A ratio controller operation w... |
Problem Statement: I'm using the new HTFS-Engines option, within HYSYS. What type of calculation mode is the new TASC interface using? Is it Checking, Simulation or Design? | Solution: The new HTFS-Engines option, within HYSYS, was implemented using Simulation. Using the given stream inlet conditions, the Simulation calculation mode is used to determine the heat load, pressure change and stream outlet conditions that will occur with the exchanger you specify.
If you need the Design or Check... |
Problem Statement: When opening Aspen Properties Database Manager, the error message Snap-in Failed to initialize or
Snap-in Creation failed occurs (See attached error message for detail). | Solution: 1. Go to Control Panel | Add/Remove Programs
2. Un-install the Microsoft SQL Server 2005 including the other SQL Components, and then reboot the system.
3. Install the attached SQLEXPRS32.exe from thisSolution.
4. Select the default option, select Mixed Mode Authentication and enter Aspen100 or any password. ... |
Problem Statement: I am interested to know how Aspen HYSYS does the extrapolation for the compressor performance curve beyond (or to the right of) the surge limit point in dynamic simulation. Please clarify. | Solution: If the “Use Surge Curve� check box in Rating->Flow Limits is checked, the compressor will try to use the surge flow at the given speed as the flow to the compressor, and try to keep the compressor not go under that flow rate. This sometime leads the dynamic solver to non-convergence.
If that check box ... |
Problem Statement: How to model a water- acetic acid-hydrocarbon system. | Solution: On this issue, acetic-acid water should be handled using a model that includes vapor phase association. In Aspen Plus, UNIQ-HOC or NRTL-HOC should be used, in which Hayden-O’Connell EOS model with Henry’s law is used in the vapor phase. In Aspen HYSYS, you can use NRTL or UNIQUE as fluid package and use... |
Problem Statement: What does the error message Error 2: A Hyprotech network security key was found that has an invalid serial number. No licenses were available on other valid Hyprotech network security... mean? | Solution: All error messages are explained in detail in the trouble shooting section of the HYSYS Get Started manual, which can be found in PDF format on your HYSYS product CD.
When a network version of HYSYS starts up, it sends out a broadcast message, looking for a network key of a certain key code sitting somewhere ... |
Problem Statement: When comparing examples using the Hydrate Formation Utility, what is the difference between the Inhibitor Calculation being Included and Not Included? | Solution: KBSolution 128238 provided two examples of how a Hydrate Formation Utility might be used.
In this case, there are two examples:
1. Hydrocarbon.hsc: If you double click on the Utility > Design Tab > Hydrate Formation at Stream Condition > Inhibitor Calculation is marked Included.
2. CO2 rich.hsc: If you double... |
Problem Statement: Why does my Column Automation code have problems in HYSYS 3? | Solution: Columns can no longer be Run while the Solver is switched off.
For example, code like
'Link to HYSYS Objects
Set hyApp = GetObject(, HYSYS.Application)
Set hyCase = hyApp.ActiveDocument
Set hyCol = hyCase.Flowsheet.Operations.Item(T-100)
Set hyColFS = hyCol.ColumnFlowsheet
'Turn Off Solver, Reset Col, Press R... |
Problem Statement: How to interpret the hydrate curve calculated in Envelope utility for a stream with no water? | Solution: For the hydrates to form, the stream must contain at least few molecules of water, if the stream in question has no water then one can understand that no hydrates will form. For a stream that has no water, if one calculates the hydrate curve using the Envelope Utility, then it should treated carefully, in oth... |
Problem Statement: In MASSBAL, you could define streams as Chemical, VLE, Fluid, Food, or Pulp. What stream definition is supported in the MASSBAL subflowsheet in HYSYS? | Solution: MASSBAL has many different possible stream definitions (e.g. Chemical, VLE, Fluid, Food, Pulp). However, the only one used in HYSYS will be the VLE stream type. Thus, in order for MASSBAL to use HYSYS to perform its thermodynamic calculations, callback functions have been set up. We have callback functions to... |
Problem Statement: Why do old Dynamic Depressuring utility cases return different results when loaded in Aspen HYSYS V7.3 CP1 (or newer)? | Solution: Some changes have been implemented in Aspen HYSYS V7.3 with CP1 and within the Aspen HYSYS dynamic depressuring utility. When the inlet stream is pure vapor (V/F =1), the liquid level will not be allowed to be specified and will be defaulted to zero.
In earlier versions, Aspen HYSYS allowed the specificatio... |
Problem Statement: How do I tell HYSYS to use the steam tables property package (NBS or ASME) when I have other components besides water in my case? | Solution: The heat exchanger operation allows the shell and tube sides to be solved using 2 different property packages. To tell the shell side to use NBS (or ASME), you must create two Fluid Packages and a sub-flowsheet and in the Basis Environment associate the subflowsheet to use the steam table property package.
St... |
Problem Statement: How does Aspen HYSYS depressuring perform with respect to the experiment and the BLOWDOWN simulator? | Solution: The Aspen HYSYS Depressuring Utility predictions are validated against experimental data reported in the literature for three experiments originally intended to test the capabilities of the BLOWDOWN? simulator [1]. The experiments were carried out in an order that reflects an increasing degree of difficulty: ... |
Problem Statement: What are the definitions of the pressure types for the Aspen HYSYS Dynamics PSV valve? | Solution: Set pressure is when valve starts to open. The inlet static pressure rises above the set pressure of the safety valve, the disc will begin to lift its seat. let say the set pressure is 10 bars. If the inlet pressure is higher than 10 bars then the valve starts to open.
Full open pressure is when the valve is ... |
Problem Statement: What is the Standard option for Peng Robinson? | Solution: The PR model traditionally incorporated in HYSIM and in HYSYS has been enhanced by Hyprotech. In other words, it is different from the Peng-Robinson equation in the original publication.
Beginning with HYSYS 2.3, it is possible to use the original form of the Peng-Robinson equation of state.
This feature can ... |
Problem Statement: Before HYSYS 3.0, there used to be an edit box at the top of each property view. Where has it gone? | Solution: The entry box at the top of the view is gone and has been replaced with edit-in-place functionality.
However, the ability to edit only a portion of a user specified value has not be removed from HYSYS 3.0.1. A cell can be put in edit mode, by pressing the F2 button. For users unfamiliar with the F2 key, there... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.