Makeup Source

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Navigation: Main Page -> Models -> Other General Models

Related Links: Makeup Block (MU), DirectLink


General Description

  • The Makeup Source acts as an infinite source of material.
  • A Makeup Source is used to provide material to any number of Makeup Blocks which are enabled in units in the project.
  • The Makeup Source is configured in almost the same way as a Feeder, with the user specifying the mass fractions of the species and the required temperature. However, the user does not specify the amount of material flowing from the unit, as this is the sum of the Makeup Block requirements.
  • The Makeup Source will supply the amount of material as required by each Makeup Block and will display the individual flow to each unit, as well as the total flow required.
  • The Makeup Source is NOT connected to the Makeup Blocks by a normal link. SysCAD creates a DirectLink which is automatically drawn at the Makeup Block. It is important to note that no links can be connected to the Makeup Source.

Video Links

The following video is part of the Tutorial showing users how to insert and configure a Makeup Source:

Diagram

Makeup source1.jpg

The Makeup Source unit may be placed on any page in a simulation model. It can then be used on all pages in a model.


Inputs and Outputs

The Makeup Source does not have any inputs or outputs.

The Makeup Block(s) are connected indirectly by selecting the name of the required Makeup Source from a drop down list of available makeup sources in the project as shown below:

Makeup source.png

Data Sections

  1. MakeupSource tab - this is the first Tab and is used to configure the following:
    • Set the Temperature and Pressure (if required) of the material from the source; or
    • Copy the composition, temperature and pressure (all three, or a combination of them) from another unit.
  2. Content tab - Optional tab only shown if ShowContent option on first tab page is ticked. Contains data on the material from the Source and may be spread across one or two Tabs, depending on the project and the selected views.
  3. DSp - this Tab contains the breakdown of the species contained in the project. This may be spread across one or two Tabs, depending on the number of species in the project.
  4. QProd - This and subsequent tab pages, e.g. QProd.. and Sp, shows the properties of the stream out of the unit.
  5. Info tab - Contains general settings for the unit and allows the user to include documentation about the unit and create Hyperlinks to external documents.
  6. Links tab, contains a summary table for all the input and output streams.
  7. Audit tab - Contains summary information required for Mass and Energy balance. See Model Examples for enthalpy calculation Examples.

The data sections and variable names are described in detail in the following table.


MakeUp Source Page

Unit Type: MakeupSource - The first tab page in the access window will have this name.

Tag (Long/Short) Input / Calc Description / Calculated Variables
Common Data on First Tab Page

Flow Requirements

The SpModel.Reqd field is only shown if more than one Species Model is available in the project (eg. Standard and Bayer3).

SpModel.Reqd Inherit Upstream configuration will be used.
Standard All the variables are calculated using the Mass Weighted Mean of the species.
Species Model Use an alternative species model, such as 'Bayer3' or 'Potash'.
SpModel.Used Standard The Standard species model is being used.
Species Model An alternative species model is being used.
SpModelType Display This field displays the Species Model type used in the unit.

Temperature & Pressure Requirements

Note: The VLE options are only valid for components with VLE information. When one of the VLE options is chosen, the VLE tab will be visible. Note that some VLE conditions are inherently unachievable: for example you can never have a saturated vapour if there are nonvolatile liquid components present. See these notes. If you try to set an unachievable condition you will get an error.

VLEquilibrium Off Default. No VLE data is applied. The user can enter values for both P_Reqd and T_Reqd.
Saturated_Vap(T) The composition will be auto adjusted to saturated VAPOUR conditions at the Temperature in the T_Reqd field.
Saturated_Vap(P) The composition will be auto adjusted to saturated VAPOUR conditions at the Pressure in the P_Reqd field.
SuperHeat_Vap This allows the mixture to be at superheated conditions. P_Reqd must be  ≤ P_saturated at the specified Temperature (T_Reqd)(SysCAD will auto adjust the pressure if it is greater than the saturated pressure).
Saturated_Liq(T) The composition will be auto adjusted to saturated LIQUID conditions at the Temperature in the T_Reqd field.
Saturated_Liq(P) The composition will be auto adjusted to saturated LIQUID conditions at the Pressure in the P_Reqd field.
Subcooled_Liq This allows the mixture to be at sub-cooled conditions. P_Reqd must be  ≥ P_saturated at the specified Temperature (T_Reqd) (SysCAD will auto adjust the pressure if it is less than the saturated pressure).
Saturated(X,T) The composition will be auto adjusted to saturated conditions at the Temperature in the T_Reqd field, with a vapour fraction (steam quality if the volatile component is H2O) of X_Reqd.
Saturated(X,P) The composition will be auto adjusted to saturated conditions at the Pressure in the P_Reqd field, with a vapour fraction (steam quality if the volatile component is H2O) of X_Reqd.
Saturated_Non_Cond(T,P) The vapour fraction of the volatile component (X_Rqd) will be auto adjusted to saturated conditions at the Temperature in the T_Reqd field and Pressure in the P_Reqd field, when non-condensable gases are present.
Relative Humidity The Feed must contain gases. If the user selects this option, SysCAD will adjust the amount of H2O(g) to give the required relative humidity in the gas stream. SysCAD will adjust the fractions of the gases in the Feeder other than H2O(g) proportionally.
Relative Humidity = Partial Pressure of H2O(g) / Saturation Pressure of H2O(g) at Stream Temperature * 100
Please see the YouTube link for a video presentation on using this functionality.
PressureReqd / P_Reqd Input / Calc The required input pressure. This value is not usually required for steady state mass balances. However, for energy balances, especially in the case of steam/water, it is important that the correct pressure is specified. This value is calculated if one of the Saturated at temperature VLE options is chosen.
TemperatureReqd / T_Reqd Input / Calc The required temperature of the material from the feeder. This value is calculated if one of the Saturated at pressure VLE options is chosen.
X_Reqd(VapourFrac) Input / Calc This field is only visible if VLEquilibrium is in use. The required vapour fraction (or steam quality if the volatile component is H2O) of the material from the feeder. This value is calculated unless the Saturated(X,T) or Saturated(X,P) VLE option is chosen. (Available in SysCAD 9.2 and later)

Qualities

Qualities

Composition Fetch

CF.When Off No information will be transferred automatically. The user may still manually transfer data from the source by pressing the CF.Fetch button.
OnceOff This mode allows a once off automatic information transfer of information at the next project step (if the project is solving) or when project solve/run is started (if the project is stopped). Once the data has been transferred, it will revert back to the off mode.
Continuous This mode allows continuous automatic information transfer while the project is solving. This is similar to a cross page connector in terms of material flow but the solver will treat the unit operations separately. Therefore, for large projects with difficult to solve recycle streams, this is a great way of breaking up the solver network to improve solve speed.
CF.What Nothing No information will be fetched.
T Temperature information from the CF.Source unit (specified by the user) will be used.
T, P Temperature and Pressure information from the CF.Source unit (specified by the user) will be used.
Comp Component make up information from the CF.Source unit (specified by the user) will be used.
T, Comp Temperature and Component make up information from the CF.Source unit (specified by the user) will be used.
P, Comp Pressure and Component make up information from the CF.Source unit (specified by the user) will be used.
T, P, Comp Temperature, Pressure and Component make up information from the CF.Source unit (specified by the user) will be used.
CF.What.Quality Tick Box Different options will appear in this space depending on the options available. Possible options include: LockUp, Size data and so on.
CF.Source Input The user inputs the source unit from where the data is copied.
CF.WarnOnZeroSrc Tick Box Flag a warning message if the source of the composition fetch drops to zero flow.
CF.WarnOnCoExist Tick Box
CF.Fetch Button The user may fetch the information from the Source by pressing this button.

Options

ShowContent Tick Box If enabled the Content tab pages will be displayed. Contains data on the material from the Source and may be spread across one or two Tabs, depending on the project and the selected views.

Results: Total Flow Conditions

State Display Displays the state of the unit.
MassFlow / Qm Display The mass flow out of the source.
VolFlow / Qv Display The volume flow out of the source.
NVolFlow / NQv Display The normalised volume flow out of the source.
Temperature / T Calc The temperature of the material flowing out of the source.
Density / Rho Calc The density of the material flowing out of the source.
NDensity / NRho Display The normalised density of the material flowing out of the source.
Pressure / P Calc The pressure of the material flowing out of the source.

Summary

Total.MassFlow / Qm Calc The total Mass of material flowing out of the source.
Total.VolFlow / Qv Calc The total Volume of material flowing out of the source.
Total.NVolFlow / NQv Calc The total Normalised Volume of material flowing out of the source.
Total.Moles Calc The total number of Moles of material flowing out of the source.
Total.totHs@T Calc The total Sensible Enthalpy of the material flowing out of the source.
Total.totHz@T Calc The total Enthalpy including Phase Change of the material flowing out of the source.
Total.totHf@T Calc The Total Enthalpy of the material flowing out of the source.

Totals

This section displays a list of all units which have makeup blocks using this makeup source. The three columns of data displayed for each unit are described below:
DemandTag Display The tag of the unit which has at least one makeup block using this makeup source.
Count Calc The number of makeup blocks in the unit which are using this makeup source.
MassFlow / Qm Calc The total mass of material flowing from this makeup source to the unit.

Networks

Network.Count Calc The number of networks which have at least one makeup block using this makeup source.
Network.List Display A list of the Network IDs of the networks which have at least one makeup block using this makeup source.
This section displays a list of the networks which have makeup blocks using this makeup source. The five columns displayed for each network are described below:
NetID Calc The Network ID.
MUCount Calc The number of makeup blocks within the network which are using this makeup source.
MassFlow / Qm Calc The total mass of material flowing from this makeup source to the network.
VolFlow / Qv Calc The total volume of material flowing from this makeup source to the network.
Clipboard Button If this button is pressed, a dropdown list of two options will appear:

Tags: A list of the units within the network which have makeup blocks using this makeup source will be copied to the clipboard.
Tags Flows: A table of the units within the network which have makeup blocks using this makeup source, along with their current mass and volume flows, will be copied to the clipboard.

DSp Section

The DSp (default name) sections allow the user to specify the composition of the material from the source. The DSp page MUST be configured, unless the user selects the 'Composition Fetch' option from the first page. The method of setting the composition is described in the Dsp Section.

Adding this Model to a Project

Insert into Configuration file

Sort either by DLL or Group.

 

DLL:

Basic1.dll

Units/Links

Process: Makeup Source

or

Group:

General

Units/Links

Process: Makeup Source

See Project Configuration for more information on adding models to the configuration file.


Insert into Project

 

Insert Unit

Process

Makeup Source

See Insert Unit for general information on inserting units.

Hints and Comments

If you want to use makeups on several different flowsheets pointing to the same makeup source, then it is recommended that you put the makeup source on a separate flowsheet.