Material Flow Section - PropGroup2

Navigation: Models ➔ Common Sections ➔ Material Flow Section ➔ Density Correction, Solubility, Saturation

Material Flow (Qo)	Qxxxx Tab Include Properties						Species Flow	Optional Tabs
Basic Information	Energy ValuesAtUserTandP	Density Correction Solubility Saturation	Acidity Charge Transport	HeatsOfCombustion Heating Values	Solution Impurity H2O Properties	Water Quality	Sp Tab EC Tab	DLockup LockUp	DTrack Track	DSz Sz MSz	DSSA SSA

Related Links: Common Content Section

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This section is used to display the included properties: Density Correction, Solubility and Saturation.

Data Sections

Tag (Long/Short)	Input / Calc	Description/Calculated Variables / Options
Density Correction
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 its 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 the liquor 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 or from the Include Properties dropdown list on the first page of the material Flow section, then the following fields will also be shown:
H2O(l).AppRho25	Calc	The calculated density of the liquor with only water and the components that have density correction functions, at 25°C.
H2O(l).AppQm	Calc	The calculated mass flow of the liquor with only water and the components that have density correction functions.
H2O(l).AppQv	Calc	The calculated volume flow of the liquor 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).
Solubility Values In this section only the fields that are relevant for the generic form of solubility, i.e. solubility equations entered in the Species Database, will be shown. For fields relating to Potash Solubility, please see Potash Solubility in Units. Visible when Solubility data has been entered for one or more species. If Solubility is switched off, these fields are still shown, the heading changes to "Solubility (Off)".
Solubility
SolubleSpecies1.Saturated / Sat	Calc	This will be the saturation mass fraction of the soluble species. The tag is based on the actual species, for example NaCl.Sat. When .Act equals .Sat the mixture is saturated.
SolubleSpecies1.Actual / Act	Calc	This will be the actual mass fraction of the soluble species. The tag is based on the actual species, for example NaCl.Act.
Saturation Values These properties are related to the saturation temperature and pressure of solution. These fields are only visible if the Additional Properties option for Saturation values is selected in the Plant Model - Views tab page or from the Include Properties dropdown list on the first page of the material Flow section.
Saturation...
Component	List	Any component that has the correct Vp Equations defined in the species database maybe selected here. See VLE sub section for more information.
VapourFrac / Vf	Calc	Displays the vapour mass fraction.
TotalP	Calc	Displays the total pressure.
PartialP	Calc	Displays the partial pressure based on the component selected.
SatP@T	Calc	Saturated pressure at the mixture temperature.
SatT@PP	Calc	Saturated temperature at the mixture's partial pressure. Will be NAN (displayed as *) when no partial pressure.
SatT@P	Calc	Saturated temperature at the mixture pressure.
WaterSatT@P	Calc	Displays the Saturation Temperature at pressure based on pure water. This is used to calculate the Boiling point elevation. (Please see Water and Steam Properties for further information on this calculation)
BPE	Calc	Standard Species Model If the stream is using the Standard Species model then please see Boiling Point Elevation for more information on this calculation. The user may enter values for the van't Hoff constant for each aqueous species in the Species Database. The user may set the method of calculating the BPE in all streams containing the Standard Species model as either None or van't Hoff in the Plant Model - Standard Properties Model Options. Other Species Models, e.g. Bayer Streams containing other species models, such as the Alumina 3 Bayer Species Model, will always use the implemented BPE equation to calculate this value. The boiling point elevation is calculated as StreamSatT@P - ComponentSatT@P. The Solvent used for this calculation is water. Note: User can change the BPE value limits in the Plant Model - species tab.
Temperature / T	Calc	Temperature of the stream.
SuperHeat@PP	Calc	Super Heat at the mixture's partial pressure (T-SatT@PP). Will be NAN (displayed as *) when no partial pressure.
SuperHeat@P	Calc	Super Heat at the mixture's pressure (T-SatT@P).
Subcooling@P	Calc	The amount of Subcooling at the mixture's pressure (SatT@P-T).
LatHtVap	Calc	The Latent heat of vaporisation of the listed component at the temperature and partial pressure of the vaporising 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 vaporising species is equal to the saturation pressure, the latent heat may not have exactly the same value as for saturation conditions since the vapour 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 vaporising 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.
RelHumidity	Calc	The relative humidity of the stream. This is only useful if the stream contains gases, such as O2, N2, Air, etc. Relative Humidity = Partial Pressure of the Saturation Component (usually H2O) / Saturation Pressure of the Saturation Component at Stream Temperature * 100 Please see the YouTube link for a video presentation on setting up a feeder with the required Relative Humidity.