SDB - Vapours

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Navigation: User Guide ➔ Species Properties ($SDB) ➔ Vapours Tab

FS SDB Tab H2O Tab Thermo1 Tab Thermo2 Tab Vapours Tab Liquids Tab Solids Tab Definition Tab Properties Tab Other Tab Elements Tab Components Tab

Vapours Tab

This tab page displays the following properties of the Vapour species in the project:

  • Density, if SysCAD is using the Ideal Gas density to calculate the density for this species, the word IdealGas will appear on the far right.
  • Vapour Pressure for the user specified T.
  • Vapour Temperature for the user specified P.
  • IdealK (K) if vapour pressure data has been provided. IdealK=VapourP(UserSpecifiedT)/UserSpecifiedP. Low K value indicates tendency to vapour phase, high K value to liquid phase. (Available from Build 139.)
  • Critical Temperature (Tc).
  • Enthalpy(Hz) at saturation pressure.
  • Condensable Species (CondensableSp): corresponding liquid species that can be condensed from this vapour species. Only shown if vapour pressure data has been provided. (Available from Build 139.)
  • Viscosity
  • Thermal Conductivity
  • Cp/Cv, usually (not steam) equal to Cp/(Cp-R), based on ideal gas relationship Cp = Cv + R, where R = gas constant. User can also specify value of Cp/Cv in species database.

Species Properties Vapours139.png

  • The Species Property Data shown here is given for a temperature of 25°C and a pressure of 101.325 kPa.
  • The temperature (T) and pressure (P) can be changed to obtain species properties at different conditions.
  • Users can choose to display the data in either mass or mole basis. This is done via the Mass Basis check box, it toggles between the two options.
  • SpeciesShortButton.png and SpeciesLongButton.png: The SpeciesTag buttons toggles between the short and long species names.
  • SpeciesConfbutton.png: Pressing the CopytoClipboard button will add selected Properties Data onto the clipboard.
  • SpeciesPropertiesbutton.png: The Reports button allows the user to copy selected data onto the clipboard.
  • Button - Filter On.png and Button - Filter Off.png: These buttons allow the user to filter the species to display only species that meet certain criteria. See Species Filter for details on how the species filter is used.