Package Modelica.Media.Water.IF97_Utilities
Low level and utility computation for high accuracy water properties according to the IAPWS/IF97 standard

Information

Package description:

This package provides high accuracy physical properties for water according to the IAPWS/IF97 standard. It has been part of the ThermoFluid Modelica library and been extended, reorganized and documented to become part of the Modelica Standard library.

An important feature that distinguishes this implementation of the IF97 steam property standard is that this implementation has been explicitly designed to work well in dynamic simulations. Computational performance has been of high importance. This means that there often exist several ways to get the same result from different functions if one of the functions is called often but can be optimized for that purpose.

The original documentation of the IAPWS/IF97 steam properties can freely be distributed with computer implementations, so for curious minds the complete standard documentation is provided with the Modelica properties library. The following documents are included (in directory Modelica/Resources/Documentation/Media/Water/IF97documentation):

IF97.pdf The standards document for the main part of the IF97.
Back3.pdf The backwards equations for region 3.
crits.pdf The critical point data.
meltsub.pdf The melting- and sublimation line formulation (in IF97_Utilities.BaseIF97.IceBoundaries)
surf.pdf The surface tension standard definition
thcond.pdf The thermal conductivity standard definition
visc.pdf The viscosity standard definition

Package contents

Package BaseIF97 contains the implementation of the IAPWS-IF97 as described in IF97.pdf. The explicit backwards equations for region 3 from Back3.pdf are implemented as initial values for an inverse iteration of the exact function in IF97 for the input pairs (p,h) and (p,s). The low-level functions in BaseIF97 are not needed for standard simulation usage, but can be useful for experts and some special purposes.
Function water_ph returns all properties needed for a dynamic control volume model and properties of general interest using pressure p and specific entropy enthalpy h as dynamic states in the record ThermoProperties_ph.
Function water_ps returns all properties needed for a dynamic control volume model and properties of general interest using pressure p and specific entropy s as dynamic states in the record ThermoProperties_ps.
Function water_dT returns all properties needed for a dynamic control volume model and properties of general interest using density d and temperature T as dynamic states in the record ThermoProperties_dT.
Function water_pT returns all properties needed for a dynamic control volume model and properties of general interest using pressure p and temperature T as dynamic states in the record ThermoProperties_pT. Due to the coupling of pressure and temperature in the two-phase region, this model can obviously only be used for one-phase models or models treating both phases independently.
Function hl_p computes the liquid specific enthalpy as a function of pressure. For overcritical pressures, the critical specific enthalpy is returned
Function hv_p computes the vapour specific enthalpy as a function of pressure. For overcritical pressures, the critical specific enthalpy is returned
Function sl_p computes the liquid specific entropy as a function of pressure. For overcritical pressures, the critical specific entropy is returned
Function sv_p computes the vapour specific entropy as a function of pressure. For overcritical pressures, the critical specific entropy is returned
Function rhol_T computes the liquid density as a function of temperature. For overcritical temperatures, the critical density is returned
Function rhol_T computes the vapour density as a function of temperature. For overcritical temperatures, the critical density is returned
Function dynamicViscosity computes the dynamic viscosity as a function of density and temperature.
Function thermalConductivity computes the thermal conductivity as a function of density, temperature and pressure. Important note: Obviously only two of the three inputs are really needed, but using three inputs speeds up the computation and the three variables are known in most models anyways. The inputs d,T and p have to be consistent.
Function surfaceTension computes the surface tension between vapour and liquid water as a function of temperature.
Function isentropicEnthalpy computes the specific enthalpy h(p,s,phase) in all regions. The phase input is needed due to discontinuous derivatives at the phase boundary.
Function dynamicIsentropicEnthalpy computes the specific enthalpy h(p,s,,dguess,Tguess,phase) in all regions. The phase input is needed due to discontinuous derivatives at the phase boundary. Tguess and dguess are initial guess values for the density and temperature consistent with p and s. This function should be preferred in dynamic simulations where good guesses are often available.

Version Info and Revision history

First implemented: July, 2000 by Hubertus Tummescheit for the ThermoFluid Library with help from Jonas Eborn and Falko Jens Wagner
Code reorganization, enhanced documentation, additional functions: December, 2002 by Hubertus Tummescheit and moved to Modelica properties library.

Author: Hubertus Tummescheit,
Modelon AB
Ideon Science Park
SE-22370 Lund, Sweden
email: hubertus@modelon.se

Extends from Modelica.Icons.UtilitiesPackage (Icon for utility packages).

Package Contents

Name	Description
`BaseIF97` …	Modelica Physical Property Model: the new industrial formulation IAPWS-IF97
`beta_dT`	Isobaric expansion coefficient as function of density and temperature
`beta_ph`	Isobaric expansion coefficient as function of pressure and specific enthalpy
`beta_props_dT`	Isobaric expansion coefficient as function of density and temperature
`beta_props_ph`	Isobaric expansion coefficient as function of pressure and specific enthalpy
`beta_props_pT`	Isobaric expansion coefficient as function of pressure and temperature
`beta_pT`	Isobaric expansion coefficient as function of pressure and temperature
`cp_dT`	Specific heat capacity at constant pressure as function of density and temperature
`cp_ph`	Specific heat capacity at constant pressure as function of pressure and specific enthalpy
`cp_props_dT`	Specific heat capacity at constant pressure as function of density and temperature
`cp_props_ph`	Specific heat capacity at constant pressure as function of pressure and specific enthalpy
`cp_props_pT`	Specific heat capacity at constant pressure as function of pressure and temperature
`cp_pT`	Specific heat capacity at constant pressure as function of pressure and temperature
`cv_dT`	Specific heat capacity at constant volume as function of density and temperature
`cv_ph`	Specific heat capacity at constant volume as function of pressure and specific enthalpy
`cv_props_dT`	Specific heat capacity at constant volume as function of density and temperature
`cv_props_ph`	Specific heat capacity at constant volume as function of pressure and specific enthalpy
`cv_props_pT`	Specific heat capacity at constant volume as function of pressure and temperature
`cv_pT`	Specific heat capacity at constant volume as function of pressure and temperature
`ddhp`	Density derivative by specific enthalpy
`ddhp_props`	Density derivative by specific enthalpy
`ddph`	Density derivative by pressure
`ddph_props`	Density derivative by pressure
`dynamicIsentropicEnthalpy`	Isentropic specific enthalpy from p,s and good guesses of d and T
`dynamicViscosity`	Compute eta(d,T) in the one-phase region
`h_dT`	Specific enthalpy as function of density and temperature
`h_dT_der`	Derivative function of h_dT
`h_props_dT`	Specific enthalpy as function of density and temperature
`h_props_ps`	Specific enthalpy as function or pressure and temperature
`h_props_pT`	Specific enthalpy as function or pressure and temperature
`h_ps`	Specific enthalpy as function or pressure and temperature
`h_pT`	Specific enthalpy as function or pressure and temperature
`h_pT_der`	Derivative function of h_pT
`hl_p`	Compute the saturated liquid specific h(p)
`hv_p`	Compute the saturated vapour specific h(p)
`isentropicEnthalpy`	Isentropic specific enthalpy from p,s (preferably use dynamicIsentropicEnthalpy in dynamic simulation!)
`isentropicEnthalpy_der`	Derivative of isentropic specific enthalpy from p,s
`isentropicEnthalpy_props`
`isentropicExponent_dT`	Isentropic exponent as function of density and temperature
`isentropicExponent_ph`	Isentropic exponent as function of pressure and specific enthalpy
`isentropicExponent_props_dT`	Isentropic exponent as function of density and temperature
`isentropicExponent_props_ph`	Isentropic exponent as function of pressure and specific enthalpy
`isentropicExponent_props_pT`	Isentropic exponent as function of pressure and temperature
`isentropicExponent_pT`	Isentropic exponent as function of pressure and temperature
`iter`
`kappa_dT`	Isothermal compressibility factor as function of density and temperature
`kappa_ph`	Isothermal compressibility factor as function of pressure and specific enthalpy
`kappa_props_dT`	Isothermal compressibility factor as function of density and temperature
`kappa_props_ph`	Isothermal compressibility factor as function of pressure and specific enthalpy
`kappa_props_pT`	Isothermal compressibility factor as function of pressure and temperature
`kappa_pT`	Isothermal compressibility factor as function of pressure and temperature
`p_dT`	Pressure as function of density and temperature
`p_dT_der`	Derivative function of p_dT
`p_props_dT`	Pressure as function of density and temperature
`phase_dT`	Phase as a function of pressure and temperature
`phase_ph`	Phase as a function of pressure and specific enthalpy
`phase_ps`	Phase as a function of pressure and specific entropy
`regionAssertReal`	Assert function for inlining
`rho_ph`	Density as function of pressure and specific enthalpy
`rho_ph_der`	Derivative function of rho_ph
`rho_props_ph`	Density as function of pressure and specific enthalpy
`rho_props_ps`	Density as function of pressure and specific entropy
`rho_props_pT`	Density as function or pressure and temperature
`rho_ps`	Density as function of pressure and specific entropy
`rho_pT`	Density as function or pressure and temperature
`rho_pT_der`	Derivative function of rho_pT
`rhol_p`	Compute the saturated liquid d(p)
`rhol_T`	Compute the saturated liquid d(T)
`rhov_p`	Compute the saturated vapour d(p)
`rhov_T`	Compute the saturated vapour d(T)
`s_dT`	Temperature as function of density and temperature
`s_ph`	Specific entropy as function of pressure and specific enthalpy
`s_ph_der`	Specific entropy as function of pressure and specific enthalpy
`s_props_dT`	Specific entropy as function of density and temperature
`s_props_ph`	Specific entropy as function of pressure and specific enthalpy
`s_props_pT`	Specific entropy as function of pressure and temperature
`s_pT`	Temperature as function of pressure and temperature
`sl_p`	Compute the saturated liquid specific s(p)
`surfaceTension`	Compute sigma(T) at saturation T
`sv_p`	Compute the saturated vapour specific s(p)
`T_ph`	Temperature as function of pressure and specific enthalpy
`T_ph_der`	Derivative function of T_ph
`T_props_ph`	Temperature as function of pressure and specific enthalpy
`T_props_ps`	Temperature as function of pressure and specific entropy
`T_ps`	Temperature as function of pressure and specific entropy
`thermalConductivity`	Compute lambda(d,T,p) in the one-phase region
`ThermoFluidSpecial` …
`velocityOfSound_dT`	Speed of sound as function of density and temperature
`velocityOfSound_ph`
`velocityOfSound_props_dT`	Speed of sound as function of density and temperature
`velocityOfSound_props_ph`	Speed of sound as function of pressure and specific enthalpy
`velocityOfSound_props_pT`	Speed of sound as function of pressure and temperature
`velocityOfSound_pT`	Speed of sound as function of pressure and temperature
`waterBaseProp_dT`	Intermediate property record for water (d and T preferred states)
`waterBaseProp_ph`	Intermediate property record for water
`waterBaseProp_ps`	Intermediate property record for water
`waterBaseProp_pT`	Intermediate property record for water (p and T preferred states)

Record Modelica.Media.Water.IF97_Utilities.iter
Constants for iterations internal to some functions

Information

This icon is indicates a record.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.IterationData (Constants for iterations internal to some functions).

Fields

Type	Name	Description
constant `Integer`	`IMAX`	Maximum number of iterations for inverse functions
constant `Real`	`DELP`	Maximum iteration error in pressure, Pa
constant `Real`	`DELS`	Maximum iteration error in specific entropy, J/{kg.K}
constant `Real`	`DELH`	Maximum iteration error in specific enthalpy, J/kg
constant `Real`	`DELD`	Maximum iteration error in density, kg/m^3

Function Modelica.Media.Water.IF97_Utilities.waterBaseProp_ph
Intermediate property record for water

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	Phase: 2 for two-phase, 1 for one phase, 0 if unknown
`Integer`	`region`	If 0, do region computation, otherwise assume the region is this input

Outputs

Type	Name	Description
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Function Modelica.Media.Water.IF97_Utilities.waterBaseProp_ps
Intermediate property record for water

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`Integer`	`phase`	Phase: 2 for two-phase, 1 for one phase, 0 if unknown
`Integer`	`region`	If 0, do region computation, otherwise assume the region is this input

Outputs

Type	Name	Description
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Function Modelica.Media.Water.IF97_Utilities.rho_props_ps
Density as function of pressure and specific entropy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`IF97BaseTwoPhase`	`properties`	Auxiliary record

Outputs

Type	Name	Description
`Density`	`rho`	Density

Function Modelica.Media.Water.IF97_Utilities.rho_ps
Density as function of pressure and specific entropy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Density`	`rho`	Density

Function Modelica.Media.Water.IF97_Utilities.T_props_ps
Temperature as function of pressure and specific entropy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`IF97BaseTwoPhase`	`properties`	Auxiliary record

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.T_ps
Temperature as function of pressure and specific entropy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.h_props_ps
Specific enthalpy as function or pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.h_ps
Specific enthalpy as function or pressure and temperature

Information

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Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.phase_ps
Phase as a function of pressure and specific entropy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy

Outputs

Type	Name	Description
`Integer`	`phase`	True if in liquid or gas or supercritical region

Function Modelica.Media.Water.IF97_Utilities.phase_ph
Phase as a function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy

Outputs

Type	Name	Description
`Integer`	`phase`	True if in liquid or gas or supercritical region

Function Modelica.Media.Water.IF97_Utilities.phase_dT
Phase as a function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`rho`	Density
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`Integer`	`phase`	True if in liquid or gas or supercritical region

Function Modelica.Media.Water.IF97_Utilities.rho_props_ph
Density as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`properties`	Auxiliary record

Outputs

Type	Name	Description
`Density`	`rho`	Density

Function Modelica.Media.Water.IF97_Utilities.rho_ph
Density as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Density`	`rho`	Density

Function Modelica.Media.Water.IF97_Utilities.rho_ph_der
Derivative function of rho_ph

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`properties`	Auxiliary record
`Real`	`p_der`	Derivative of pressure
`Real`	`h_der`	Derivative of specific enthalpy

Outputs

Type	Name	Description
`Real`	`rho_der`	Derivative of density

Function Modelica.Media.Water.IF97_Utilities.T_props_ph
Temperature as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`properties`	Auxiliary record

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.T_ph
Temperature as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Temperature`	`T`	Temperature

Function Modelica.Media.Water.IF97_Utilities.T_ph_der
Derivative function of T_ph

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`properties`	Auxiliary record
`Real`	`p_der`	Derivative of pressure
`Real`	`h_der`	Derivative of specific enthalpy

Outputs

Type	Name	Description
`Real`	`T_der`	Derivative of temperature

Function Modelica.Media.Water.IF97_Utilities.s_props_ph
Specific entropy as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`properties`	Auxiliary record

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.s_ph
Specific entropy as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.s_ph_der
Specific entropy as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`properties`	Auxiliary record
`Real`	`p_der`	Derivative of pressure
`Real`	`h_der`	Derivative of specific enthalpy

Outputs

Type	Name	Description
`Real`	`s_der`	Derivative of entropy

Function Modelica.Media.Water.IF97_Utilities.cv_props_ph
Specific heat capacity at constant volume as function of pressure and specific enthalpy

Information

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Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cv_ph
Specific heat capacity at constant volume as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.regionAssertReal
Assert function for inlining

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Boolean`	`check`	Condition to check

Outputs

Type	Name	Description
`Real`	`dummy`	Dummy output

Function Modelica.Media.Water.IF97_Utilities.cp_props_ph
Specific heat capacity at constant pressure as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cp_ph
Specific heat capacity at constant pressure as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.beta_props_ph
Isobaric expansion coefficient as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`RelativePressureCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Water.IF97_Utilities.beta_ph
Isobaric expansion coefficient as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`RelativePressureCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Water.IF97_Utilities.kappa_props_ph
Isothermal compressibility factor as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility factor

Function Modelica.Media.Water.IF97_Utilities.kappa_ph
Isothermal compressibility factor as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility factor

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_props_ph
Speed of sound as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Velocity`	`v_sound`	Speed of sound

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_ph
Icon for functions

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Velocity`	`v_sound`	Speed of sound

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_props_ph
Isentropic exponent as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Real`	`gamma`	Isentropic exponent

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_ph
Isentropic exponent as function of pressure and specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Real`	`gamma`	Isentropic exponent

Function Modelica.Media.Water.IF97_Utilities.ddph_props
Density derivative by pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`DerDensityByPressure`	`ddph`	Density derivative by pressure

Function Modelica.Media.Water.IF97_Utilities.ddph
Density derivative by pressure

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`DerDensityByPressure`	`ddph`	Density derivative by pressure

Function Modelica.Media.Water.IF97_Utilities.ddhp_props
Density derivative by specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`DerDensityByEnthalpy`	`ddhp`	Density derivative by specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.ddhp
Density derivative by specific enthalpy

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEnthalpy`	`h`	Specific enthalpy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`DerDensityByEnthalpy`	`ddhp`	Density derivative by specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.waterBaseProp_pT
Intermediate property record for water (p and T preferred states)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, do region computation, otherwise assume the region is this input

Outputs

Type	Name	Description
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Function Modelica.Media.Water.IF97_Utilities.rho_props_pT
Density as function or pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Density`	`rho`	Density

Function Modelica.Media.Water.IF97_Utilities.rho_pT
Density as function or pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Density`	`rho`	Density

Function Modelica.Media.Water.IF97_Utilities.h_props_pT
Specific enthalpy as function or pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.h_pT
Specific enthalpy as function or pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.h_pT_der
Derivative function of h_pT

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record
`Real`	`p_der`	Derivative of pressure
`Real`	`T_der`	Derivative of temperature

Outputs

Type	Name	Description
`Real`	`h_der`	Derivative of specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.rho_pT_der
Derivative function of rho_pT

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record
`Real`	`p_der`	Derivative of pressure
`Real`	`T_der`	Derivative of temperature

Outputs

Type	Name	Description
`Real`	`rho_der`	Derivative of density

Function Modelica.Media.Water.IF97_Utilities.s_props_pT
Specific entropy as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.s_pT
Temperature as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.cv_props_pT
Specific heat capacity at constant volume as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cv_pT
Specific heat capacity at constant volume as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cp_props_pT
Specific heat capacity at constant pressure as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cp_pT
Specific heat capacity at constant pressure as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.beta_props_pT
Isobaric expansion coefficient as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`RelativePressureCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Water.IF97_Utilities.beta_pT
Isobaric expansion coefficient as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`RelativePressureCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Water.IF97_Utilities.kappa_props_pT
Isothermal compressibility factor as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility factor

Function Modelica.Media.Water.IF97_Utilities.kappa_pT
Isothermal compressibility factor as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility factor

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_props_pT
Speed of sound as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Velocity`	`v_sound`	Speed of sound

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_pT
Speed of sound as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Velocity`	`v_sound`	Speed of sound

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_props_pT
Isentropic exponent as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Real`	`gamma`	Isentropic exponent

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_pT
Isentropic exponent as function of pressure and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`Temperature`	`T`	Temperature
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Real`	`gamma`	Isentropic exponent

Function Modelica.Media.Water.IF97_Utilities.waterBaseProp_dT
Intermediate property record for water (d and T preferred states)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`rho`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	Phase: 2 for two-phase, 1 for one phase, 0 if unknown
`Integer`	`region`	If 0, do region computation, otherwise assume the region is this input

Outputs

Type	Name	Description
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Function Modelica.Media.Water.IF97_Utilities.h_props_dT
Specific enthalpy as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.h_dT
Specific enthalpy as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.h_dT_der
Derivative function of h_dT

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record
`Real`	`d_der`	Derivative of density
`Real`	`T_der`	Derivative of temperature

Outputs

Type	Name	Description
`Real`	`h_der`	Derivative of specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.p_props_dT
Pressure as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Pressure`	`p`	Pressure

Function Modelica.Media.Water.IF97_Utilities.p_dT
Pressure as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Pressure`	`p`	Pressure

Function Modelica.Media.Water.IF97_Utilities.p_dT_der
Derivative function of p_dT

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record
`Real`	`d_der`	Derivative of density
`Real`	`T_der`	Derivative of temperature

Outputs

Type	Name	Description
`Real`	`p_der`	Derivative of pressure

Function Modelica.Media.Water.IF97_Utilities.s_props_dT
Specific entropy as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.s_dT
Temperature as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.cv_props_dT
Specific heat capacity at constant volume as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cv_dT
Specific heat capacity at constant volume as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cv`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cp_props_dT
Specific heat capacity at constant pressure as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.cp_dT
Specific heat capacity at constant pressure as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificHeatCapacity`	`cp`	Specific heat capacity

Function Modelica.Media.Water.IF97_Utilities.beta_props_dT
Isobaric expansion coefficient as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`RelativePressureCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Water.IF97_Utilities.beta_dT
Isobaric expansion coefficient as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`RelativePressureCoefficient`	`beta`	Isobaric expansion coefficient

Function Modelica.Media.Water.IF97_Utilities.kappa_props_dT
Isothermal compressibility factor as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility factor

Function Modelica.Media.Water.IF97_Utilities.kappa_dT
Isothermal compressibility factor as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`IsothermalCompressibility`	`kappa`	Isothermal compressibility factor

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_props_dT
Speed of sound as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Velocity`	`v_sound`	Speed of sound

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_dT
Speed of sound as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Velocity`	`v_sound`	Speed of sound

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_props_dT
Isentropic exponent as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`Real`	`gamma`	Isentropic exponent

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_dT
Isentropic exponent as function of density and temperature

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`Real`	`gamma`	Isentropic exponent

Function Modelica.Media.Water.IF97_Utilities.hl_p
Compute the saturated liquid specific h(p)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.hl_p (Liquid specific enthalpy on the boundary between regions 4 and 3 or 1).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.hv_p
Compute the saturated vapour specific h(p)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.hv_p (Vapour specific enthalpy on the boundary between regions 4 and 3 or 2).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.sl_p
Compute the saturated liquid specific s(p)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.sl_p (Liquid specific entropy on the boundary between regions 4 and 3 or 1).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.sv_p
Compute the saturated vapour specific s(p)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.sv_p (Vapour specific entropy on the boundary between regions 4 and 3 or 2).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure

Outputs

Type	Name	Description
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.rhol_T
Compute the saturated liquid d(T)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.rhol_T (Density of saturated water).

Inputs

Type	Name	Description
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`Density`	`d`	Density of water at the boiling point

Function Modelica.Media.Water.IF97_Utilities.rhov_T
Compute the saturated vapour d(T)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.rhov_T (Density of saturated vapour).

Inputs

Type	Name	Description
`Temperature`	`T`	Temperature

Outputs

Type	Name	Description
`Density`	`d`	Density of steam at the condensation point

Function Modelica.Media.Water.IF97_Utilities.rhol_p
Compute the saturated liquid d(p)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.rhol_p (Density of saturated water).

Inputs

Type	Name	Description
`Pressure`	`p`	Saturation pressure

Outputs

Type	Name	Description
`Density`	`rho`	Density of steam at the condensation point

Function Modelica.Media.Water.IF97_Utilities.rhov_p
Compute the saturated vapour d(p)

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Regions.rhov_p (Density of saturated vapour).

Inputs

Type	Name	Description
`Pressure`	`p`	Saturation pressure

Outputs

Type	Name	Description
`Density`	`rho`	Density of steam at the condensation point

Function Modelica.Media.Water.IF97_Utilities.dynamicViscosity
Compute eta(d,T) in the one-phase region

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.visc_dTp (Dynamic viscosity eta(d,T,p), industrial formulation).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature (K)
`Pressure`	`p`	Pressure (only needed for region of validity)
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known

Outputs

Type	Name	Description
`DynamicViscosity`	`eta`	Dynamic viscosity

Function Modelica.Media.Water.IF97_Utilities.thermalConductivity
Compute lambda(d,T,p) in the one-phase region

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.cond_dTp (Thermal conductivity lam(d,T,p) (industrial use version) only in one-phase region).

Inputs

Type	Name	Description
`Density`	`d`	Density
`Temperature`	`T`	Temperature (K)
`Pressure`	`p`	Pressure
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Boolean`	`industrialMethod`	If true, the industrial method is used, otherwise the scientific one

Outputs

Type	Name	Description
`ThermalConductivity`	`lambda`	Thermal conductivity

Function Modelica.Media.Water.IF97_Utilities.surfaceTension
Compute sigma(T) at saturation T

Information

This icon indicates Modelica functions.

Extends from Modelica.Media.Water.IF97_Utilities.BaseIF97.Transport.surfaceTension (Surface tension in region 4 between steam and water).

Inputs

Type	Name	Description
`Temperature`	`T`	Temperature (K)

Outputs

Type	Name	Description
`SurfaceTension`	`sigma`	Surface tension in SI units

Function Modelica.Media.Water.IF97_Utilities.isentropicEnthalpy
Isentropic specific enthalpy from p,s (preferably use dynamicIsentropicEnthalpy in dynamic simulation!)

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known
`Integer`	`region`	If 0, region is unknown, otherwise known and this input

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.isentropicEnthalpy_props
Icon for functions

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`IF97BaseTwoPhase`	`aux`	Auxiliary record

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Isentropic enthalpy

Function Modelica.Media.Water.IF97_Utilities.isentropicEnthalpy_der
Derivative of isentropic specific enthalpy from p,s

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`IF97BaseTwoPhase`	`aux`	Auxiliary record
`Real`	`p_der`	Pressure derivative
`Real`	`s_der`	Entropy derivative

Outputs

Type	Name	Description
`Real`	`h_der`	Specific enthalpy derivative

Function Modelica.Media.Water.IF97_Utilities.dynamicIsentropicEnthalpy
Isentropic specific enthalpy from p,s and good guesses of d and T

Information

This icon indicates Modelica functions.

Extends from Modelica.Icons.Function (Icon for functions).

Inputs

Type	Name	Description
`Pressure`	`p`	Pressure
`SpecificEntropy`	`s`	Specific entropy
`Density`	`dguess`	Good guess density, e.g., from adjacent volume
`Temperature`	`Tguess`	Good guess temperature, e.g., from adjacent volume
`Integer`	`phase`	2 for two-phase, 1 for one-phase, 0 if not known

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Package Modelica.​Media.​Water.​IF97_UtilitiesLow level and utility computation for high accuracy water properties according to the IAPWS/IF97 standard

Information

Package description:

Package contents

Version Info and Revision history

Package Contents

Record Modelica.​Media.​Water.​IF97_Utilities.​iterConstants for iterations internal to some functions

Information

Fields

Function Modelica.​Media.​Water.​IF97_Utilities.​waterBaseProp_phIntermediate property record for water

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​waterBaseProp_psIntermediate property record for water

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​rho_props_psDensity as function of pressure and specific entropy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​rho_psDensity as function of pressure and specific entropy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​T_props_psTemperature as function of pressure and specific entropy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​T_psTemperature as function of pressure and specific entropy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​h_props_psSpecific enthalpy as function or pressure and temperature

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​h_psSpecific enthalpy as function or pressure and temperature

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​phase_psPhase as a function of pressure and specific entropy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​phase_phPhase as a function of pressure and specific enthalpy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​phase_dTPhase as a function of pressure and temperature

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​rho_props_phDensity as function of pressure and specific enthalpy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​rho_phDensity as function of pressure and specific enthalpy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​rho_ph_derDerivative function of rho_ph

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​T_props_phTemperature as function of pressure and specific enthalpy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​T_phTemperature as function of pressure and specific enthalpy

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​T_ph_derDerivative function of T_ph

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​s_props_phSpecific entropy as function of pressure and specific enthalpy

Information

Inputs

Package Modelica.Media.Water.IF97_Utilities
Low level and utility computation for high accuracy water properties according to the IAPWS/IF97 standard

Record Modelica.Media.Water.IF97_Utilities.iter
Constants for iterations internal to some functions

Function Modelica.Media.Water.IF97_Utilities.waterBaseProp_ph
Intermediate property record for water

Function Modelica.Media.Water.IF97_Utilities.waterBaseProp_ps
Intermediate property record for water

Function Modelica.Media.Water.IF97_Utilities.rho_props_ps
Density as function of pressure and specific entropy

Function Modelica.Media.Water.IF97_Utilities.rho_ps
Density as function of pressure and specific entropy

Function Modelica.Media.Water.IF97_Utilities.T_props_ps
Temperature as function of pressure and specific entropy

Function Modelica.Media.Water.IF97_Utilities.T_ps
Temperature as function of pressure and specific entropy

Function Modelica.Media.Water.IF97_Utilities.h_props_ps
Specific enthalpy as function or pressure and temperature

Function Modelica.Media.Water.IF97_Utilities.h_ps
Specific enthalpy as function or pressure and temperature

Function Modelica.Media.Water.IF97_Utilities.phase_ps
Phase as a function of pressure and specific entropy

Function Modelica.Media.Water.IF97_Utilities.phase_ph
Phase as a function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.phase_dT
Phase as a function of pressure and temperature

Function Modelica.Media.Water.IF97_Utilities.rho_props_ph
Density as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.rho_ph
Density as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.rho_ph_der
Derivative function of rho_ph

Function Modelica.Media.Water.IF97_Utilities.T_props_ph
Temperature as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.T_ph
Temperature as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.T_ph_der
Derivative function of T_ph

Function Modelica.Media.Water.IF97_Utilities.s_props_ph
Specific entropy as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.s_ph
Specific entropy as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.s_ph_der
Specific entropy as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.cv_props_ph
Specific heat capacity at constant volume as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.cv_ph
Specific heat capacity at constant volume as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.regionAssertReal
Assert function for inlining

Function Modelica.Media.Water.IF97_Utilities.cp_props_ph
Specific heat capacity at constant pressure as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.cp_ph
Specific heat capacity at constant pressure as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.beta_props_ph
Isobaric expansion coefficient as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.beta_ph
Isobaric expansion coefficient as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.kappa_props_ph
Isothermal compressibility factor as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.kappa_ph
Isothermal compressibility factor as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_props_ph
Speed of sound as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.velocityOfSound_ph
Icon for functions

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_props_ph
Isentropic exponent as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.isentropicExponent_ph
Isentropic exponent as function of pressure and specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.ddph_props
Density derivative by pressure

Function Modelica.Media.Water.IF97_Utilities.ddph
Density derivative by pressure

Function Modelica.Media.Water.IF97_Utilities.ddhp_props
Density derivative by specific enthalpy