Basic Pond Model

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NOTE: This feature is currently in BETA with limited release. Please contact us ([email protected]) if you are interested in using this model. This page is currently under development and details may change. Use with caution - we do not guarantee compatibility between different BETA versions.

Navigation: Models ➔ Material Handling Models ➔ Basic Pond Model


General Description

The Basic Pond model is used in the Dynamic mode to emulate an Evaporation Pond. The user has the option to divide the pond into two layers, a bed where most of the solids settle and a clarified liquor layer for liquids, or consider the pond as a single layer. In any case, the concentration of the pore liquid in the bed layer and the concentration of the supernatant pond liquid is always equal and in equilibrium with the solids.

Inputs and Outputs

Label Required
Optional
Input
Output
Number of Connections Description
Min Max
Feed Required In 1 10 The feed to the Pond.
Overflow Required Out 1 1 Pond overflow stream.
CL_Out Optional Out 0 1 Outlet stream from the Clarified Liquor layer.
Bed_Out Optional Out 0 1 Outlet stream from the Bed layer.
Seepage Optional Out 0 1 Pond seepage.
Vent Optional Out 0 1 Vent Stream (Vapour Only).

Data Sections

  1. BasicPond tab - The first tab contains general information relating to the unit and allows the user to configure the unit.
  2. Outlets tab - Optional tab, only visible if one of the optional slurry outlets are connected (CL_Out, Bed_Out or Seepage). This tab allows user to configure the various outputs from the pond as defined in the list of outputs above.
  3. Results tab - Contains results of the model including summary of content parameters.
  4. CRB - Optional tab, only visible if Rxns.Option = CRB.
  5. MU - Optional tab, or multiple tabs if more than 1 Makeup is selected. Only visible if one of more Makeups are enabled in the Evaluation Block on the first tab page.
  6. QFeed - Optional tab, only visible if ShowQFeed is enabled on the first tab page. This page shows the properties of the mixed stream as the feed to the unit. If user has specified a required pressure in the unit, the mixed feed will be set to this pressure. This may cause the temperature of the mixture to change if the delta P is significantly different.
  7. Bed tab - Optional tab, only visible if BedLayer.Partition and ShowBed are enabled on the first tab page. Contains data on the material in the bed.
  8. CL tab - Optional tab, only visible if BedLayer.Partition and ShowCL are enabled on the first tab page. Contains data on the material in the clarified liquor layer.
  9. Content tab - contains data on the material in the pond.
  10. Preset tab - Optional tab, only visible if UsePreset option is enabled on the first tab page. Allows user to define the Preset composition.
  11. QCL - Optional tab, only visible if the CL_Out outlet is connected and ShowQCL is enabled on the first tab page. This page shows the properties of the CL_Out stream.
  12. QBed - Optional tab, only visible if the Bed_Out outlet is connected and ShowQBed is enabled on the first tab page. This page shows the properties of the Bed_Out stream.
  13. Info tab - contains general settings for the unit and allows the user to include documentation about the unit and create Hyperlinks to external documents.
  14. Links tab, contains a summary table for all the input and output streams.
  15. Audit tab - contains summary information required for Mass and Energy balance. See Model Examples for enthalpy calculation Examples.

BasicPond tab page

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

Tag (Long/Short) Input / Calc Description/Calculated Variables / Options
Tag Display This name tag may be modified with the change tag option.
Condition Display OK if no errors/warnings, otherwise lists errors/warnings.
ConditionCount Display The current number of errors/warnings. If condition is OK, returns 0.
GeneralDescription / GenDesc Display This is an automatically generated description for the unit. If the user has entered text in the 'EqpDesc' field on the Info tab (see below), this will be displayed here.
If this field is blank, then SysCAD will display the UnitType or SubClass.
Requirements (Pond Size)
Capacity.Volume Input The volume of the pond.
Pond/Capacity.Area Input The surface area of the pond.
Pond/Capacity.Depth Calc The depth of the pond, calculated by Depth = Volume / Area.
Requirements
TemperatureReqd / T_Reqd Input The required temperature of the pond.
Rxns.Option None There are no reactions in the pond.
CRB The user can specify reactions to occur on the pond contents. If this is selected then the associated page, CRB becomes visible and may be configured.
Note: The user does not have to configure a reaction file, even if this option is selected.
Rxns.LiqBypassFrac Input Only visible if Rxns.Options = CRB. The fraction of the liquids that bypass the reaction block.
Rxns.SolBypassFrac Input Only visible if Rxns.Options = CRB. The fraction of the solids that bypass the reaction block.
BedLayer.Partition Tickbox Separates the contents of the pond into two layers, Clarified Liquor and Bed. The Bed layer is the bottom layer.
BedLayer.FracOfSolids Input Only visible if BedLayer.Partition has been enabled. The fraction of the solids that report to the Bed layer.
BedLayer.LiquidFrac Input Only visible if BedLayer.Partition has been enabled. The fraction liquids in the Bed layer.
Requirements (Evaporation)
Evap.Method None There is no evaporation from the pond.
Massflow The user can specify the mass flow of water to be evaporated.
Volumeflow The user can specify the volume flow of water to be evaporated.
Height Rate The user can specify the rate of evaporation of water as a length per unit time. This will be multiplied by the surface area of the pond to obtain a volume of water to be evaporated.
Evap.QmReqd Input Only visible if Evap.Method = Massflow. The mass flow of water to be evaporated.
Evap.QvReqd Input Only visible if Evap.Method = Volumeflow. The volume flow of water to be evaporated.
Evap.RateReqd Input Only visible if Evap.Method = Height Rate. The required evaporation rate.
Evap.MinWaterFrac Input Visible if Evap.Method is any method other than None. The minimum fraction of water to be maintained in the pond. Evaporation may be less than specified to prevent the fraction of water being less than this value.
EB... (Evaluation Block)
EvalSequence Calc The sequence in which the sub models (which are part of the evaluation blocks) will be calculated. The sequence is determined by the priority selection for the individual sub-models.
Note: If the user chooses On-AutoSequence then SysCAD will determine the sequence of the sub-models. The auto evaluation sequence followed will be the order the sub models are listed below.
Makeups Input The number of Makeup Blocks required. Extra dropdown options Makeup1, Makeup2, etc. will be added to allow these to be switched on and off and prioritised in relation to the other sub-models.
MakeupX List This can be used to switch the Makeup Block (MU) on or off and prioritise it in relation to the other sub-models. If this is 'On' then the associated page, MUX becomes visible and may be configured.
Note: This field is only visible if the entry for 'Makeups' is greater than 0. If there is one makeup then X=1. If there are two makeups, then X=1 and X=2, etc.
PresetData...
UsePreset Tickbox If ticked, will allow user to set temperature, level and composition of the pond at startup. The composition can be set on the Preset tab page.
Temperature / T Input Only visible if UsePreset has been enabled. The temperature of the contents of the pond at startup.
Level Input Only visible if UsePreset has been enabled. The level of the pond at startup.
Options
TrackOverflow Tickbox If ticked, will enable warnings if material is sent to overflow stream.
ShowQFeed Tickbox Allows the user to view the QFeed and associated tab pages, showing the properties of the combined feed stream. See Material Flow Section. This will be prior to any sub-model actions, mixing with the pond content or Basic calculations.
ShowBed Tickbox Only visible if BedLayer.Partition has been enabled. Allows the user to view the Bed and associated tab pages, showing the properties of the Bed layer. See Material Content Section.
ShowCL Tickbox Only visible if BedLayer.Partition has been enabled. Allows the user to view the CL and associated tab pages, showing the properties of the Clarified Liquor layer. See Material Content Section.
ShowQCL Tickbox Only visible if CL_Out outlet has been connected. Allows the user to view the QCL and associated tab pages, showing the properties of the Clarified Liquor outlet stream. See Material Flow Section.
ShowQBed Tickbox Only visible if Bed_Out outlet has been connected. Allows the user to view the QBed and associated tab pages, showing the properties of the Bed outlet stream. See Material Flow Section.

Outlets tab page

Notes:

  1. All gases exit via the Gas Vent and cannot exit via normal Outlet links.
  2. If no Gas Vent is connected, then any Gas will exit via an automatically created Gas Spill direct link.
Tag (Long/Short) Input/ Calc Description
(NOTE: Most fields will not be shown for a particular outlet if it is not connected)
Requirements (Clarified Liquor Outlet)
CL...
ConnectedPipe Display The tag of the connected pipe for the Clarified Liquor Outlet.
Order Display The order used for determining outlet flows.
Filter None All liquid and solid material will be able to exit via the connected pipe.
Block-Solids Solids will be not be allowed to exit via the connected pipe.
Block-Liquids Liquids will be not be allowed to exit via the connected pipe.
Composition Allows the user to specify the solid, liquid and vapour fractions.
Individual Phase Allows the user to specify an individual phase to draw from the pond.
Composition.SolidFrac / Sf Input Only visible if Filter = Composition. The required solid fraction of the stream.
Composition.LiquidFrac / Lf Input Only visible if Filter = Composition. The required liquid fraction of the stream.
Composition.VapourFrac / Vf Input Only visible if Filter = Composition. The required vapour fraction of the stream.
IPhase / IPh Input Only visible if Filter = Individual Phase. The required individual phase of the stream.
CL_Out...
Outlet XXX
These Output connection tags are also available on the Pipe access window. Any changes made here will be updated on the pipe access window and vice-versa.
CapacityControl Off The maximum mass flow through the outlet will be set to unlimited amount (uncontrolled).
ByMassFlow The user can specify the maximum mass flow through the outlet.
ByVolumeFlow The user can specify the maximum volumetric flow through the outlet.
Qm.ReqdCapacity / Qm.Capacity Input Visible with the ByMassFlow method. The required pipe Capacity in mass flow.
Qm.MinCapacity / Qm.MinCap Input Visible with the ByMassFlow method. The minimum user specified flow capacity by mass.
Qm.MaxCapacity / Qm.MaxCap Input Visible with the ByMassFlow method. The maximum user specified flow capacity by mass. Enter * for unlimited flow.
Qv.ReqdCapacity / Qv.Capacity Input Visible with the ByVolumeFlow method. The required pipe Capacity in volumetric flow.
Qv.MinCapacity / Qv.MinCap Input Visible with the ByVolumeFlow method. The minimum user specified flow capacity by volume.
Qv.MaxCapacity / Qv.MaxCap Input Visible with the ByVolumeFlow method. The maximum user specified flow capacity by volume. Enter * for unlimited flow.
MeasRho Display The stream density used when converting between mass and volume flows.
OverCapacity Spill If more material enters the pipe then the Maximum Capacity value, then the excess material will be 'spilled' and sent to the Spills area.
Accept If more material enters the pipe then the Maximum Capacity value, then the pipe must accept the excess material.
BatchMethod None The Batch functionality is not enabled.
Total Mass The Batch functionality is enabled and the required batch size is defined in terms of Mass flow. Further fields will become visible if this option is selected allowing the user to set the required batch mass.
Total Volume The Batch functionality is enabled and the required batch size is defined in terms of Volume flow. Further fields will become visible if this option is selected allowing the user to set the required batch volume.
The following fields will be visible if Total Mass is selected as the Batch method.
M.BatchAddition Input The Mass of the required Batch. This amount of material will be allowed to flow out of the pipe at the rate specified in Qm.Capacity or Qv.Capacity.
When this value is set the amount of material will be added to the amount of material already in M.BatchRemaining (the field below), and then this field will revert to 0.
M.BatchRemaining Calc / Input The Mass of material currently in a Batch, i.e. the amount of material in a Batch that still has to flow through the pipe. Normally this value is initialised at the start of a run and then it is calculated by SysCAD from the amount required in M.BatchAddition and the amount already delivered by the batch.
However, the user may set this value and hence override the calculated Batch amount at any stage.
If the users sets this as Undefined (or '*') this is equivalent to any infinite Batch and therefore the flow through the pipe will not be restricted.
M.BatchTotal Display The Total Mass that has flowed through the pipe using the Batch addition method.
The following fields will be visible if Total Volume is selected as the Batch method.
V.BatchAddition Input The Volume of the required Batch. This amount of material will be allowed to flow out of the pipe at the rate specified in Qm.Capacity or Qv.Capacity.
When this value is set the amount of material will be added to the amount of material already in V.BatchRemaining (the field below), and then this field will revert to 0.
V.BatchRemaining Calc / Input The Volume of material currently in a Batch, i.e. the amount of material in a Batch that still has to flow through the pipe. Normally this value is initialised at the start of a run and then it is calculated by SysCAD from the amount required in V.BatchAddition and the amount already delivered by the batch.
However, the user may set this value and hence override the calculated Batch amount at any stage.
If the users sets this as Undefined (or '*') this is equivalent to any infinite Batch and therefore the flow through the pipe will not be restricted.
V.BatchTotal Display The Total Volume that has flowed through the pipe using the Batch addition method.
The following fields will be visible if Total Mass or Total Volume is selected as the Batch method.
BatchState None No Batch mode has been set.
Inactive A Batch method has been selected, but the Batch is undefined.
Busy A Batch method has been selected, there is material remaining in the Batch, and hence there is flow in the pipe due to the Batch.
Stop Flow A Batch method has been selected, there is NO material remaining in the Batch, and hence there is no flow in the pipe, i.e. the Batch will prevent any flow in the pipe.
BatchClearOnEmpty Tickbox If enabled, any remaining batch amount will be cleared on Empty action command.
BatchUsePreset Tickbox This enables the use of Preset for the Batch amount.
M or V.BatchUsePreset Input The Mass or Volume of the Batch when the model is Preset. Refer to Actions Commands - Preset for more information.
Requirements (Seepage Outlet)
Seepage...
ConnectedPipe Display The tag of the connected pipe for the Seepage Outlet.
Order Display The order used for determining outlet flows.
Filter None All liquid and solid material will be able to exit via the connected pipe.
Block-Solids Solids will be not be allowed to exit via the connected pipe.
Block-Liquids Liquids will be not be allowed to exit via the connected pipe.
Composition Allows the user to specify the solid, liquid and vapour fractions.
Individual Phase Allows the user to specify an individual phase to draw from the pond.
Composition.SolidFrac / Sf Input Only visible if Filter = Composition. The required solid fraction of the stream.
Composition.LiquidFrac / Lf Input Only visible if Filter = Composition. The required liquid fraction of the stream.
Composition.VapourFrac / Vf Input Only visible if Filter = Composition. The required vapour fraction of the stream.
IPhase / IPh Input Only visible if Filter = Individual Phase. The required individual phase of the stream.
Seepage...
Outlet XXX
These Output connection tags are also available on the Pipe access window. Any changes made here will be updated on the pipe access window and vice-versa.
CapacityControl Off The maximum mass flow through the outlet will be set to unlimited amount (uncontrolled).
ByMassFlow The user can specify the maximum mass flow through the outlet.
ByVolumeFlow The user can specify the maximum volumetric flow through the outlet.
Qm.ReqdCapacity / Qm.Capacity Input Visible with the ByMassFlow method. The required pipe Capacity in mass flow.
Qm.MinCapacity / Qm.MinCap Input Visible with the ByMassFlow method. The minimum user specified flow capacity by mass.
Qm.MaxCapacity / Qm.MaxCap Input Visible with the ByMassFlow method. The maximum user specified flow capacity by mass. Enter * for unlimited flow.
Qv.ReqdCapacity / Qv.Capacity Input Visible with the ByVolumeFlow method. The required pipe Capacity in volumetric flow.
Qv.MinCapacity / Qv.MinCap Input Visible with the ByVolumeFlow method. The minimum user specified flow capacity by volume.
Qv.MaxCapacity / Qv.MaxCap Input Visible with the ByVolumeFlow method. The maximum user specified flow capacity by volume. Enter * for unlimited flow.
MeasRho Display The stream density used when converting between mass and volume flows.
OverCapacity Spill If more material enters the pipe then the Maximum Capacity value, then the excess material will be 'spilled' and sent to the Spills area.
Accept If more material enters the pipe then the Maximum Capacity value, then the pipe must accept the excess material.
BatchMethod None The Batch functionality is not enabled.
Total Mass The Batch functionality is enabled and the required batch size is defined in terms of Mass flow. Further fields will become visible if this option is selected allowing the user to set the required batch mass.
Total Volume The Batch functionality is enabled and the required batch size is defined in terms of Volume flow. Further fields will become visible if this option is selected allowing the user to set the required batch volume.
The following fields will be visible if Total Mass is selected as the Batch method.
M.BatchAddition Input The Mass of the required Batch. This amount of material will be allowed to flow out of the pipe at the rate specified in Qm.Capacity or Qv.Capacity.
When this value is set the amount of material will be added to the amount of material already in M.BatchRemaining (the field below), and then this field will revert to 0.
M.BatchRemaining Calc / Input The Mass of material currently in a Batch, i.e. the amount of material in a Batch that still has to flow through the pipe. Normally this value is initialised at the start of a run and then it is calculated by SysCAD from the amount required in M.BatchAddition and the amount already delivered by the batch.
However, the user may set this value and hence override the calculated Batch amount at any stage.
If the users sets this as Undefined (or '*') this is equivalent to any infinite Batch and therefore the flow through the pipe will not be restricted.
M.BatchTotal Display The Total Mass that has flowed through the pipe using the Batch addition method.
The following fields will be visible if Total Volume is selected as the Batch method.
V.BatchAddition Input The Volume of the required Batch. This amount of material will be allowed to flow out of the pipe at the rate specified in Qm.Capacity or Qv.Capacity.
When this value is set the amount of material will be added to the amount of material already in V.BatchRemaining (the field below), and then this field will revert to 0.
V.BatchRemaining Calc / Input The Volume of material currently in a Batch, i.e. the amount of material in a Batch that still has to flow through the pipe. Normally this value is initialised at the start of a run and then it is calculated by SysCAD from the amount required in V.BatchAddition and the amount already delivered by the batch.
However, the user may set this value and hence override the calculated Batch amount at any stage.
If the users sets this as Undefined (or '*') this is equivalent to any infinite Batch and therefore the flow through the pipe will not be restricted.
V.BatchTotal Display The Total Volume that has flowed through the pipe using the Batch addition method.
The following fields will be visible if Total Mass or Total Volume is selected as the Batch method.
BatchState None No Batch mode has been set.
Inactive A Batch method has been selected, but the Batch is undefined.
Busy A Batch method has been selected, there is material remaining in the Batch, and hence there is flow in the pipe due to the Batch.
Stop Flow A Batch method has been selected, there is NO material remaining in the Batch, and hence there is no flow in the pipe, i.e. the Batch will prevent any flow in the pipe.
BatchClearOnEmpty Tickbox If enabled, any remaining batch amount will be cleared on Empty action command.
BatchUsePreset Tickbox This enables the use of Preset for the Batch amount.
M or V.BatchUsePreset Input The Mass or Volume of the Batch when the model is Preset. Refer to Actions Commands - Preset for more information.
Requirements (Bed Outlet)
Bed...
ConnectedPipe Display The tag of the connected pipe for the Bed Outlet.
Order Display The order used for determining outlet flows.
Composition.SolidFrac / Sf Input The required solid fraction of the stream.
Composition.LiquidFrac / Lf Input The required liquid fraction of the stream.
Bed_Out...
Outlet XXX
These Output connection tags are also available on the Pipe access window. Any changes made here will be updated on the pipe access window and vice-versa.
CapacityControl Off The maximum mass flow through the outlet will be set to unlimited amount (uncontrolled).
ByMassFlow The user can specify the maximum mass flow through the outlet.
ByVolumeFlow The user can specify the maximum volumetric flow through the outlet.
Qm.ReqdCapacity / Qm.Capacity Input Visible with the ByMassFlow method. The required pipe Capacity in mass flow.
Qm.MinCapacity / Qm.MinCap Input Visible with the ByMassFlow method. The minimum user specified flow capacity by mass.
Qm.MaxCapacity / Qm.MaxCap Input Visible with the ByMassFlow method. The maximum user specified flow capacity by mass. Enter * for unlimited flow.
Qv.ReqdCapacity / Qv.Capacity Input Visible with the ByVolumeFlow method. The required pipe Capacity in volumetric flow.
Qv.MinCapacity / Qv.MinCap Input Visible with the ByVolumeFlow method. The minimum user specified flow capacity by volume.
Qv.MaxCapacity / Qv.MaxCap Input Visible with the ByVolumeFlow method. The maximum user specified flow capacity by volume. Enter * for unlimited flow.
MeasRho Display The stream density used when converting between mass and volume flows.
OverCapacity Spill If more material enters the pipe then the Maximum Capacity value, then the excess material will be 'spilled' and sent to the Spills area.
Accept If more material enters the pipe then the Maximum Capacity value, then the pipe must accept the excess material.
BatchMethod None The Batch functionality is not enabled.
Total Mass The Batch functionality is enabled and the required batch size is defined in terms of Mass flow. Further fields will become visible if this option is selected allowing the user to set the required batch mass.
Total Volume The Batch functionality is enabled and the required batch size is defined in terms of Volume flow. Further fields will become visible if this option is selected allowing the user to set the required batch volume.
The following fields will be visible if Total Mass is selected as the Batch method.
M.BatchAddition Input The Mass of the required Batch. This amount of material will be allowed to flow out of the pipe at the rate specified in Qm.Capacity or Qv.Capacity.
When this value is set the amount of material will be added to the amount of material already in M.BatchRemaining (the field below), and then this field will revert to 0.
M.BatchRemaining Calc / Input The Mass of material currently in a Batch, i.e. the amount of material in a Batch that still has to flow through the pipe. Normally this value is initialised at the start of a run and then it is calculated by SysCAD from the amount required in M.BatchAddition and the amount already delivered by the batch.
However, the user may set this value and hence override the calculated Batch amount at any stage.
If the users sets this as Undefined (or '*') this is equivalent to any infinite Batch and therefore the flow through the pipe will not be restricted.
M.BatchTotal Display The Total Mass that has flowed through the pipe using the Batch addition method.
The following fields will be visible if Total Volume is selected as the Batch method.
V.BatchAddition Input The Volume of the required Batch. This amount of material will be allowed to flow out of the pipe at the rate specified in Qm.Capacity or Qv.Capacity.
When this value is set the amount of material will be added to the amount of material already in V.BatchRemaining (the field below), and then this field will revert to 0.
V.BatchRemaining Calc / Input The Volume of material currently in a Batch, i.e. the amount of material in a Batch that still has to flow through the pipe. Normally this value is initialised at the start of a run and then it is calculated by SysCAD from the amount required in V.BatchAddition and the amount already delivered by the batch.
However, the user may set this value and hence override the calculated Batch amount at any stage.
If the users sets this as Undefined (or '*') this is equivalent to any infinite Batch and therefore the flow through the pipe will not be restricted.
V.BatchTotal Display The Total Volume that has flowed through the pipe using the Batch addition method.
The following fields will be visible if Total Mass or Total Volume is selected as the Batch method.
BatchState None No Batch mode has been set.
Inactive A Batch method has been selected, but the Batch is undefined.
Busy A Batch method has been selected, there is material remaining in the Batch, and hence there is flow in the pipe due to the Batch.
Stop Flow A Batch method has been selected, there is NO material remaining in the Batch, and hence there is no flow in the pipe, i.e. the Batch will prevent any flow in the pipe.
BatchClearOnEmpty Tickbox If enabled, any remaining batch amount will be cleared on Empty action command.
BatchUsePreset Tickbox This enables the use of Preset for the Batch amount.
M or V.BatchUsePreset Input The Mass or Volume of the Batch when the model is Preset. Refer to Actions Commands - Preset for more information.
CL Outlet Stream
CL...
CapControl.MassFlowReqd / QmReqd Calc The mass flow required in the pipe set by the capacity control.
Pull.MassFlowReqd / QmReqd Calc
MassFlowReqd / QmReqd Calc The mass flow required in the pipe. Minimum of CapControl.MassFlowReqd and Pull.MassFlowReqd.
MassFlow / Qm Calc The actual mass flow in the pipe.
VolFlow / Qv Calc The actual volumetric flow in the pipe.
Seepage Outlet Stream
Seepage...
CapControl.MassFlowReqd / QmReqd Calc The mass flow required in the pipe set by the capacity control.
Pull.MassFlowReqd / QmReqd Calc
MassFlowReqd / QmReqd Calc The mass flow required in the pipe. Minimum of CapControl.MassFlowReqd and Pull.MassFlowReqd.
MassFlow / Qm Calc The actual mass flow in the pipe.
VolFlow / Qv Calc The actual volumetric flow in the pipe.
Bed Outlet Stream
Bed...
CapControl.MassFlowReqd / QmReqd Calc The mass flow required in the pipe set by the capacity control.
Pull.MassFlowReqd / QmReqd Calc
MassFlowReqd / QmReqd Calc The mass flow required in the pipe. Minimum of CapControl.MassFlowReqd and Pull.MassFlowReqd.
MassFlow / Qm Calc The actual mass flow in the pipe.
VolFlow / Qv Calc The actual volumetric flow in the pipe.

Results tab page

Tag (Long/Short) Input / Calc Description/Calculated Variables / Options
Results Summary (Pond Contents)
Temperature / T Calc The current temperature of the contents of the pond.
Density / Rho Calc The current density of the contents of the pond.
TotalVol / Vt Calc The current volume of the contents of the pond.
Level / Lvl Calc The current level of the contents of the pond.
SolidFrac / Sf Calc The current fraction of solids in the contents of the pond.
TotalMass / Mt Calc The current mass of the contents of the pond.
InitTtlMass / InitMt Calc The mass of the contents of the pond at the start of the solver run.
DeltaTtlMass / DeltaMt Calc The total change in mass of the contents of the pond since the start of the solver run (TotalMass - InitTtlMass).
MassRateOfChange / QmAcc Calc The rate of accumulation of mass in the content of the pond.
MtAcc Calc The total change of mass over the time step.
Content.HeatFlow Calc
Results Summary (Bed Layer) (This section is only visible if BedLayer.Partition has been enabled.)
BedLayer.TotalMass / Mt Calc The current mass of the contents of the bed layer.
BedLayer.TotalVol / Vt Calc The current volume of the contents of the bed layer.
BedLayer.Level / Lvl Calc The current level of the bed layer.
BedLayer.SolidFrac / Sf Calc The current fraction of solids in the bed layer.
BedLayer.ContentFrac Calc The fraction by volume of the bed layer compared to the total volume of the contents of the pond (BedLayer.TotalVol / TotalVol).
BedLayer.HeatFlow Calc The current level of the bed layer.
Results Summary (CL) (This section is only visible if BedLayer.Partition has been enabled.)
CL.TotalMass / Mt Calc The current mass of the contents of the clarified liquor layer.
CL.TotalVol / Vt Calc The current volume of the contents of the clarified liquor layer.
CL.SolidFrac / Sf Calc The current fraction of solids in the clarified liquor layer.
CL.ContentFrac Calc The fraction by volume of the clarified liquor layer compared to the total volume of the contents of the pond (CL.TotalVol / TotalVol).
Results Summary (Evaporation)
Evap.MassFlow / Qm Calc The mass flow of water evaporated.
Evap.VolumeFlow / Qv Calc The volume flow of water evaporated.
Evap.Rate Calc The evaporation rate.
Evap.HeatFlow Calc The energy (heat) required for evaporation of water.
Results Summary (CRB) (This section is only visible if Rxns.Options = CRB.)
Rxns.Mt Calc
Rxns.HeatFlow Calc
Bypass.Mt Calc
Bypass.HeatFlow Calc
Results Summary (Streams)
Feed.MassFlow / Qm Calc The feed mass flow to the pond.
MassRateOfChange / QmAcc Calc The rate of accumulation of mass in the content of the pond.
CL.MassFlow / Qm Calc Visible if CL_Out stream is connected. The mass flow of the Clarified Liquor (CL_Out) stream.
Seepage.MassFlow / Qm Calc Visible if Seepage stream is connected. The mass flow of the Seepage stream.
Bed.MassFlow / Qm Calc Visible if Bed_Out stream is connected. The mass flow of the Bed outlet (Bed_Out) stream.
Overflow.MassFlow / Qm Calc The mass flow of the overflow stream.
Vent.MassFlow / Qm Calc The mass flow of the vent stream.
HeatFlows
Content.HeatFlow Calc
BedLayer.HeatFlow Calc Only visible if BedLayer.Partition has been enabled.
Evap.HeatFlow Calc The energy (heat) required for evaporation of water.
Bypass.HeatFlow Calc
Rxns.HeatFlow Calc Only visible if Rxns.Options = CRB.
HeatFlow Calc The sum of all heat flows.

Preset tab page

The Preset page contains a Copy to Clipboard button which copies the current temperature, pressure and composition of the Preset to the clipboard for pasting into external programs such as Excel.

This page is used to set the required composition of the Pond when it is Preset. This is identical in functionality to the DSp page used in Feeders.

Adding this Model to a Project

Add to Configuration File

Sort either by DLL or Group:

  DLL:
MatHand3.dll
Units/Links Material Handling: Pond
or Group:
EnergyTransfer
Units/Links Material Handling: Pond

See Model Selection for more information on adding models to the configuration file.


Insert into Project Flowsheet

  Insert Unit Material Handling Pond

See Insert Unit for general information on inserting units.