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

Model

This 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)