Template:H2OProps Data Section

This section will show water/steam entropy values. These will only be shown if the user has chosen to display the H2OProperties 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.

NOTES:

1. If the project is using IF97 for the properties of steam and water then:
   • The enthalpies will only be slightly different to the IF97 values shown here due to the slightly different reference temperature (0°C vs 0.01°C).
   • The entropies will be different to the IF97 values by a fixed amount due to the different reference temperatures (0 Kelvin vs 0.01°C).
   • The densities will be the same.
   • In region 5 (steam > 1073K), the IF97 values will be calculated using the IF97_2 equations (refer to Water and Steam Properties for more information.

|- |font style="background: #ebebeb" colspan="3" | H2OProps (Water and Steam Properties) ... |- |Water.VapourT@P || font style="background: #ebebeb" |Calc || Water vapour temperature (boiling point/saturation temperature) at the {{{UnitOp}}} pressure. |- |Water.State || font style="background: #ebebeb" |Calc || SysCAD checks the stream properties with the steam tables and displays if under the {{{UnitOp}}} temperature and pressure, would all the H2O be liquid (water). If yes, it will display OK, if not it will display Invalid. |- |Water.Enthalpy / H || font style="background: #ebebeb" |Calc || Water enthalpy (based on reference point of 0°C). |- |Water.IF97.Enthalpy / H || font style="background: #ebebeb" |Calc || Water enthalpy calculated from IF97 (based on reference point of triple point of water (0.01°C)). |- |Water.Entropy / S || font style="background: #ebebeb" |Calc || Water entropy (based on reference point of absolute zero (0K)). |- |Water.IF97.Entropy / S || font style="background: #ebebeb" |Calc || Water entropy calculated from IF97 (based on reference point of triple point of water (0.01°C)). |- |Water.Density / Rho|| font style="background: #ebebeb" |Calc || Water density. |- |Water.IF97.Density / Rho|| font style="background: #ebebeb" |Calc || Water density calculated from IF97. |- |Steam.State || font style="background: #ebebeb" |Calc || SysCAD checks the {{{UnitOp}}} properties with the steam tables and displays:
If under the current {{{UnitOp}}} temperature and pressure, would all the H2O be vapour (steam). If yes, it will display OK, if not it will display Invalid. |- |Steam.Enthalpy / H || font style="background: #ebebeb" |Calc || Steam enthalpy (based on reference point of 0°C). |- |Steam.IF97.Enthalpy / H || font style="background: #ebebeb" |Calc || Steam enthalpy calculated from IF97 (based on reference point of triple point of water (0.01°C)). |- |Steam.Entropy / S || font style="background: #ebebeb" |Calc || Steam entropy (based on reference point of absolute zero (0K)). |- |Steam.IF97.Entropy / S || font style="background: #ebebeb" |Calc || Steam entropy calculated from IF97 (based on reference point of triple point of water (0.01°C)). |- |Steam.Density / Rho|| font style="background: #ebebeb" |Calc || Steam density. |- |Steam.IF97.Density / Rho|| font style="background: #ebebeb" |Calc || Steam density calculated from IF97.