Common Content Section
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Content Section  DSp Section  QProd Section 

Content Section
This section mainly has read only variables, except for the first 2 options, Model and Qualities.
 Model determines which species model the feeder uses. The species options available to the user will depend on the species model used by the project. Please refer to the species model for a description of this page, if a species model is chosen. The default, 'Standard', will be described here.
 Qualities  such as Size Distribution, Lockup, etc. Some of these options are only available as specified in the model's configuration file.
Symbol / Tag  Input / Calc  Calculated Variables / Options 

ModelThis may be (Reqd) or (Heritage). In general, Model (Reqd) means the species model is set by the user in the current unit operation. Model (Heritage) means the species model follows the previous unit or is determined by SysCAD. To set the species model back to default, select Inherit from the list box. Further options may be shown depending on the whether any other species models are available.  
Model  Standard  All the variables are calculated using the Mass Weighted Mean of the species. 
Inherit  Upstream configuration will be used.  
Species Model  If an alternative species model is available, the user may select it here.  
Qualities(These options are only available as specified in the model's configuration file.)  
Lockup.Action  Input  The user may choose to Create the Lockup quality. The 'Lockup' values are set on the 'DLockup' tab. The field displays the actual state of the Lock Up function: If this has been enabled then this will display 'Lockup.Action(On)', otherwise it will display 'Lockup.Action'. Please see LockUp for more information. Note: Lockup must first be enabled on the Plant Model  Qualities Tab before the user may create it here. 
MatTrack.Action  Input  The user may choose to Create the Material Tracking quality. The 'Tracking' values are set on the 'DTrack' tab. The field displays the actual state of the Material Tracking function: If this has been enabled then this will display 'MatTrack.Action(On)', otherwise it will display 'MatTrack.Action'. Please see Material Tracking for more information. Note: Material Tracking must first be configured on the Plant Model  Qualities Tab before the user may create it here. 
SzDist.Action 
Input 
The user may choose to Create the Size Distribution quality. The 'Size Distribution' values are set on the 'DSz' tab. The field displays the actual state of the Size Distribution function: If this has been enabled then this will display 'SzDist.Action(On)', otherwise it will display 'SzDist.Action'. Please see Size Distribution (PSD) for more information. 
SzSSA.Action 
Input 
The user may choose to Create the Specific Surface Area (SSA) quality. The 'SSA' values are set on the 'SSA' tab. The field displays the actual state of the SSA function: If this has been enabled then this will display 'SzSSA.Action(On)', otherwise it will display 'SzSSA.Action'. Please see Specific Surface Area (SSA) for more information. 
Lockup.InUse 
Display 
Displays the state of the LockUp function: Yes or No. 
MatTrack.InUse 
Display 
Displays the state of the Material Tracking function: Yes or No. 
SzDist.InUse 
Display 
Displays the state of the Size Distribution (PSD) function: Yes or No. 
SzSSA.InUse 
Display 
Displays the state of the Specific Surface Area (SSA) function: Yes or No. 
Content Properties  
Pressure / P  Calc  The pressure of the incoming material. 
Temperature / T  Calc  The temperature of the incoming material. 
Density See the section on Density for further information.  
Density / Rho  Calc  Calculated Density of the material 
SolidDensity / SRho  Calc  Density of the solids phase 
LiquidDensity / LRho  Calc  Density of the liquid phase 
VapourDensity / VRho  Calc  Density of the vapour phase 
SlurryDensity / SLRho  Calc  Density of the Slurry (Liquid and Solid phase) 
SolidConc  Calc  The solids concentration at stream temperature. 
Density Correction  
H2O(l).State  Data  This will be OK if all of the species with density correction functions in the stream conditions are within their mass fraction limits. Any species that has exceeded it's mass fraction limit will be shown in this field.
For example, if the user has a density correction function for NiSO4(aq) that is valid up to a mass fraction of 10% NiSO4 and the stream contains 15% NiSO4(aq), this field will contain: Limit:NiSO4(aq). 
H2O(l).Rho  Calc  The density of pure water at the temperature and pressure of the stream. 
H2O(l).CorrFactor  Calc  The calculated density correction factor using all the correction factors of aqueous species in the stream for which density correction factors have been defined. Please see Density Correction Function. 
H2O(l).AppRho  Calc  The calculated density of a liquor stream with only water and the components that have density correction functions.
Note: This value may be lower or higher than the actual liquid density if there are other liquid components in the stream that do not have density correction functions. 
If the Additional Density Correction option is selected in the Plant Model  Species tab page, then the following fields will also be shown:  
H2O(l).AppRho25  Calc  The calculated density of a liquor stream with only water and the components that have density correction functions, at 25 deg celsius. 
H2O(l).AppQm  Calc  The calculated mass flow of a liquor stream with only water and the components that have density correction functions. 
H2O(l).AppQv  Calc  The calculated volume flow of a liquor stream with only water and the components that have density correction functions. 
H2O(l).Fct.X(y)  Calc  The calculated density correction factor for species X(y). 
Mass Fractions  
SolidFrac / Sf 
Calc 
Solids mass fraction 
LiquidFrac / Lf 
Calc 
Liquid mass fraction 
VapourFrac / Vf 
Calc 
Vapour mass fraction 
MlSolidFrac / MlSf 
Calc 
Solids mole fraction 
MlLiquidFrac / MlLf 
Calc 
Liquid mole fraction 
MlVapourFrac / MlVf 
Calc 
Vapour mole fraction 
MoleWt 
Calc 
The average molecular weight of all the species. 
Specific Heat  See Appendix A for Specific Heat Calculation Example.  
Cp@0 
Calc 
Cp of the total mixture @ 0 °C. 
Cp 
Calc 
Cp of the total mixture @ temperature. 
UsrDefT 
Input 
User defined Temperature, used to calc Cp@U.(Optional) 
UsrDefP(SaturationP) 
Input 
User defined pressure, used to calc Cp@U. (Optional) 
Cp@U 
Calc 
Cp of the total mixture at user defined Temperature. 
SmsCp@T 
Calc 
Solids Cp at the unit temperature 
LmsCp@T 
Calc 
Liquid Cp at the unit temperature 
VmsCp@T 
Calc 
Vapour Cp at the unit temperature 
SLmsCp@T 
Calc 
Slurry Cp at the unit temperature 
Enthalpy  
SmsHs@T 
Calc 
Enthalpy of the solids at the unit temperature 
LmsHs@T 
Calc 
Enthalpy of the liquids at the unit temperature 
VmsHs@T 
Calc 
Enthalpy of the vapour at the unit temperature 
SLmsHs@T 
Calc 
Enthalpy of the slurry at the unit temperature 
Hs@T 
Calc 
Sensible heat / kg at the unit temperature 
Hf@T 
Calc 
Heat of formation / kg at the unit temperature and pressure 
Hf@0 
Calc 
Heat of formation / kg @ 0°C and saturation pressure 
TotHs 
Calc 
Total enthalpy (Sensible heat). 
TotHf@T 
Calc 
Total heat of formation @ unit temperature. 
TotHf@0 
Calc 
Total heat of formation @ 0°C. 
CpCv 
Calc 

SatT@P 
Calc 
Saturated temperature at the unit pressure 
SatP@T 
Calc 
Saturated pressure at the unit temperature 
BPE 
Calc 
Boiling point elevation. Please see Boiling Point Elevation for further information. 
LatHtVap  Calc  The Latent heat of vaporisation of the listed component at the temperature and partial pressure of the vaporizing species at the local conditions. The latent heat is the difference in enthalpy between the vapour phase and the liquid phase of the species. This is calculated as Enthalpy(VapourPhase at local Temperature and Partial Pressure)  Enthalpy(Liquid Phase at T and Total Pressure). This is the enthalpy difference used in energy calculations. NB unless the partial pressure of the vaporizing species is equal to the saturation pressure, the latent heat may not have exactly the same value as for saturation conditions since the vapor phase enthalpy depends on its partial pressure. 
LatHtVap@SatP  Calc  The Latent heat of vaporisation of the listed component at the temperature and saturation pressure of the vaporizing species corresponding to the local temperature. The latent heat is the difference in enthalpy between the vapour phase and the liquid phase of the species. This is calculated as Enthalpy(VapourPhase at Temperature, T and saturation pressure for that T, PSat(T))  Enthalpy(Liquid Phase at T and Total Pressure). This is the latent heat that would be found in saturation tables for a given temperature. 
VViscosity 
Calc 
Viscosity of the vapour phase (defaults to Steam/Water) 
LViscosity 
Calc 
Viscosity of the liquid phase (defaults to Steam/Water) 
VKinematicVisc 
Calc 
Kinetic Viscosity (defaults to Steam/Water) 
LKinematicVisc 
Calc 
Kinetic Viscosity (defaults to Steam/Water) 
VThermalCond 
Calc 
Thermal Conductivity (defaults to Steam/Water) 
LThermalCond 
Calc 
Thermal Conductivity (defaults to Steam/Water) 
VPrandtlNo 
Calc 
Prandtl's number (defaults to Steam/Water) 
LPrandtlNo 
Calc 
Prandtl's number (defaults to Steam/Water) 
LSurfaceTens 
Calc 
Surface Tension of the liquid phase (defaults to water) 