Template:Saturation Data Section

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 [[Material_{{{type}}}_Section#Qo_.28Qxxxx.29_Tab_Page|Include Properties]] dropdown list on the first page of the material {{{type}}} section. |- |font style="background: #ebebeb" colspan="3" | 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 || font style="background: #ebebeb" |Calc || Displays the vapour mass fraction. |- |TotalP || font style="background: #ebebeb" |Calc || Displays the total pressure. |- |PartialP || font style="background: #ebebeb" |Calc || Displays the partial pressure based on the component selected. |- |SatP@T || font style="background: #ebebeb" |Calc || Saturated pressure at the mixture temperature. |- |SatT@PP || font style="background: #ebebeb" |Calc || Saturated temperature at the mixture's partial pressure. Will be NAN (displayed as *) when no partial pressure. |- |SatT@P || font style="background: #ebebeb" |Calc || Saturated temperature at the mixture pressure. |- |WaterSatT@P || font style="background: #ebebeb" |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) |- |valign="top"|BPE || font style="background: #ebebeb" valign="top" |Calc ||

1. 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.
2. 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 || font style="background: #ebebeb" |Calc || Temperature of the {{{UnitOp}}}. |- |SuperHeat@PP || font style="background: #ebebeb" |Calc || Super Heat at the mixture's partial pressure (T-SatT@PP). Will be NAN (displayed as *) when no partial pressure. |- |SuperHeat@P || font style="background: #ebebeb" |Calc || Super Heat at the mixture's pressure (T-SatT@P). |- |Subcooling@P || font style="background: #ebebeb" |Calc || The amount of Subcooling at the mixture's pressure (SatT@P-T). |- |LatHtVap || font style="background: #ebebeb" | 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 || font style="background: #ebebeb" | 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 || font style="background: #ebebeb" |Calc || The relative humidity of the {{{UnitOp}}}. This is only useful if the {{{UnitOp}}} 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.