Modelica.Media.Water.IF97_Utilities.BaseIF97.ByRegion

Information

Package description

Package ByRegion provides fast forward calls for dynamic property calculation records for all one phase regions of IAPWS/IF97

Package contents

• Function waterR1_pT computes dynamic properties for region 1 using (p,T) as inputs
• Function waterR2_pT computes dynamic properties for region 2 using (p,T) as inputs
• Function waterR3_dT computes dynamic properties for region 3 using (d,T) as inputs
• Function waterR5_pT computes dynamic properties for region 5 using (p,T) as inputs

Version Info and Revision history

• First implemented: July, 2000 by Hubertus Tummescheit

• Initial version: July 2000
• Documented and re-organized: January 2003

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

Name	Description
waterR1_pT	standard properties for region 1, (p,T) as inputs
waterR2_pT	standard properties for region 2, (p,T) as inputs
waterR3_dT	standard properties for region 3, (d,T) as inputs
waterR5_pT	standard properties for region 5, (p,T) as inputs

Modelica.Media.Water.IF97_Utilities.BaseIF97.ByRegion.waterR1_pT

Information

Inputs

Type	Name	Default	Description
Pressure	p		pressure [Pa]
Temperature	T		temperature (K) [K]

Outputs

Type	Name	Description
ThermoProperties_pT	pro	thermodynamic property collection

Modelica definition

function waterR1_pT 
  "standard properties for region 1, (p,T) as inputs"

  extends Modelica.Icons.Function;
  input SI.Pressure p "pressure";
  input SI.Temperature T "temperature (K)";
  output Modelica.Media.Common.ThermoFluidSpecial.ThermoProperties_pT pro 
    "thermodynamic property collection";

protected 
  Modelica.Media.Common.GibbsDerivs g 
    "dimensionless Gibbs funcion and dervatives w.r.t. pi and tau";
algorithm 
  g := Basic.g1(p, T);
  pro := Modelica.Media.Common.ThermoFluidSpecial.gibbsToProps_pT(g);
end waterR1_pT;

Modelica.Media.Water.IF97_Utilities.BaseIF97.ByRegion.waterR2_pT

Information

Inputs

Type	Name	Default	Description
Pressure	p		pressure [Pa]
Temperature	T		temperature (K) [K]

Outputs

Type	Name	Description
ThermoProperties_pT	pro	thermodynamic property collection

Modelica definition

function waterR2_pT 
  "standard properties for region 2, (p,T) as inputs"
  extends Modelica.Icons.Function;
  input SI.Pressure p "pressure";
  input SI.Temperature T "temperature (K)";
  output Modelica.Media.Common.ThermoFluidSpecial.ThermoProperties_pT pro 
    "thermodynamic property collection";
protected 
  Modelica.Media.Common.GibbsDerivs g 
    "dimensionless Gibbs funcion and dervatives w.r.t. pi and tau";
algorithm 
  g := Basic.g2(p, T);
  pro := Modelica.Media.Common.ThermoFluidSpecial.gibbsToProps_pT(g);
end waterR2_pT;

Modelica.Media.Water.IF97_Utilities.BaseIF97.ByRegion.waterR3_dT

Information

Inputs

Type	Name	Default	Description
Density	d		density [kg/m3]
Temperature	T		temperature (K) [K]

Outputs

Type	Name	Description
ThermoProperties_dT	pro	thermodynamic property collection

Modelica definition

function waterR3_dT 
  "standard properties for region 3, (d,T) as inputs"
  extends Modelica.Icons.Function;
  input SI.Density d "density";
  input SI.Temperature T "temperature (K)";
  output Common.ThermoFluidSpecial.ThermoProperties_dT pro 
    "thermodynamic property collection";
protected 
  Common.HelmholtzDerivs f 
    "dimensionless Helmholtz function and dervatives w.r.t. delta and tau";
algorithm 
  f := Basic.f3(d, T);
  pro := Modelica.Media.Common.ThermoFluidSpecial.helmholtzToProps_dT(f);
  assert(pro.p <= 100.0e6,
    "IF97 medium function waterR3_dT: the input pressure (= " + String(pro.p) +
    " Pa) is higher than 100 Mpa");
end waterR3_dT;

Modelica.Media.Water.IF97_Utilities.BaseIF97.ByRegion.waterR5_pT

Information

Inputs

Type	Name	Default	Description
Pressure	p		pressure [Pa]
Temperature	T		temperature (K) [K]

Outputs

Type	Name	Description
ThermoProperties_pT	pro	thermodynamic property collection

Modelica definition

function waterR5_pT 
  "standard properties for region 5, (p,T) as inputs"
  extends Modelica.Icons.Function;
  input SI.Pressure p "pressure";
  input SI.Temperature T "temperature (K)";
  output Modelica.Media.Common.ThermoFluidSpecial.ThermoProperties_pT pro 
    "thermodynamic property collection";
protected 
  Modelica.Media.Common.GibbsDerivs g 
    "dimensionless Gibbs funcion and dervatives w.r.t. pi and tau";
algorithm 
  g := Basic.g5(p, T);
  pro := Modelica.Media.Common.ThermoFluidSpecial.gibbsToProps_pT(g);
end waterR5_pT;