Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic
Functions for calculating the isentropic enthalpy from pressure p and specific entropy s

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Package description

Package contents

Function hofpT1 computes h(p,T) in region 1.
Function handsofpT1 computes (s,h)=f(p,T) in region 1, needed for two-phase properties.
Function hofps1 computes h(p,s) in region 1.
Function hofpT2 computes h(p,T) in region 2.
Function handsofpT2 computes (s,h)=f(p,T) in region 2, needed for two-phase properties.
Function hofps2 computes h(p,s) in region 2.
Function hofdT3 computes h(d,T) in region 3.
Function hofpsdt3 computes h(p,s,dguess,Tguess) in region 3, where dguess and Tguess are initial guess values for the density and temperature consistent with p and s.
Function hofps4 computes h(p,s) in region 4.
Function hofpT5 computes h(p,T) in region 5.
Function water_hisentropic computes h(p,s,phase) in all regions. The phase input is needed due to discontinuous derivatives at the phase boundary.
Function water_hisentropic_dyn computes 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

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

Initial version: July 2000
Documentation added: December 2002

Extends from Modelica.Icons.FunctionsPackage (Icon for packages containing functions).

Package Contents

Name	Description
`handsofpT1`	Special function for specific enthalpy and specific entropy in region 1
`handsofpT2`	Function for isentropic specific enthalpy and specific entropy in region 2
`hofdT3`	Function for isentropic specific enthalpy in region 3
`hofps1`	Function for isentropic specific enthalpy in region 1
`hofps2`	Function for isentropic specific enthalpy in region 2
`hofps3`	Isentropic specific enthalpy in region 3 h(p,s)
`hofps4`	Isentropic specific enthalpy in region 4 h(p,s)
`hofpsdt3`	Isentropic specific enthalpy in region 3 h(p,s) with given good guess in d and T
`hofpT1`	Intermediate function for isentropic specific enthalpy in region 1
`hofpT2`	Intermediate function for isentropic specific enthalpy in region 2
`hofpT5`	Specific enthalpy in region 5 h(p,T)
`water_hisentropic`	Isentropic specific enthalpy from p,s (preferably use water_hisentropic_dyn in dynamic simulation!)
`water_hisentropic_dyn`	Isentropic specific enthalpy from p,s and good guesses of d and T

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpT1
Intermediate function for isentropic specific enthalpy in region 1

Information

This icon indicates Modelica functions.

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

Inputs

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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.handsofpT1
Special function for specific enthalpy and specific entropy in region 1

Information

This icon indicates Modelica functions.

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

Inputs

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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps1
Function for isentropic specific enthalpy in region 1

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
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpT2
Intermediate function for isentropic specific enthalpy in region 2

Information

This icon indicates Modelica functions.

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

Inputs

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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.handsofpT2
Function for isentropic specific enthalpy and specific entropy in region 2

Information

This icon indicates Modelica functions.

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

Inputs

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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy
`SpecificEntropy`	`s`	Specific entropy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps2
Function for isentropic specific enthalpy in region 2

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
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofdT3
Function for isentropic specific enthalpy in region 3

Information

This icon indicates Modelica functions.

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

Inputs

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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps3
Isentropic specific enthalpy in region 3 h(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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpsdt3
Isentropic specific enthalpy in region 3 h(p,s) with given good guess in 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
`Pressure`	`delp`	Relative error in p
`SpecificEntropy`	`dels`	Relative error in s

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps4
Isentropic specific enthalpy in region 4 h(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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpT5
Specific enthalpy in region 5 h(p,T)

Information

This icon indicates Modelica functions.

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

Inputs

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

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.water_hisentropic
Isentropic specific enthalpy from p,s (preferably use water_hisentropic_dyn 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`	Phase: 2 for two-phase, 1 for one phase, 0 if unknown

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.water_hisentropic_dyn
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`	1 for one phase, 2 for two phase

Outputs

Type	Name	Description
`SpecificEnthalpy`	`h`	Specific enthalpy

Package Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​IsentropicFunctions for calculating the isentropic enthalpy from pressure p and specific entropy s

Information

Package description

Package contents

Version Info and Revision history

Package Contents

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofpT1Intermediate function for isentropic specific enthalpy in region 1

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​handsofpT1Special function for specific enthalpy and specific entropy in region 1

Information

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Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofps1Function for isentropic specific enthalpy in region 1

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Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofpT2Intermediate function for isentropic specific enthalpy in region 2

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Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​handsofpT2Function for isentropic specific enthalpy and specific entropy in region 2

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofps2Function for isentropic specific enthalpy in region 2

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Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofdT3Function for isentropic specific enthalpy in region 3

Information

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Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofps3Isentropic specific enthalpy in region 3 h(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofpsdt3Isentropic specific enthalpy in region 3 h(p,s) with given good guess in d and T

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofps4Isentropic specific enthalpy in region 4 h(p,s)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​hofpT5Specific enthalpy in region 5 h(p,T)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​water_hisentropicIsentropic specific enthalpy from p,s (preferably use water_hisentropic_dyn in dynamic simulation!)

Information

Inputs

Outputs

Function Modelica.​Media.​Water.​IF97_Utilities.​BaseIF97.​Isentropic.​water_hisentropic_dynIsentropic specific enthalpy from p,s and good guesses of d and T

Information

Inputs

Outputs

Package Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic
Functions for calculating the isentropic enthalpy from pressure p and specific entropy s

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpT1
Intermediate function for isentropic specific enthalpy in region 1

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.handsofpT1
Special function for specific enthalpy and specific entropy in region 1

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps1
Function for isentropic specific enthalpy in region 1

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpT2
Intermediate function for isentropic specific enthalpy in region 2

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.handsofpT2
Function for isentropic specific enthalpy and specific entropy in region 2

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps2
Function for isentropic specific enthalpy in region 2

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofdT3
Function for isentropic specific enthalpy in region 3

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps3
Isentropic specific enthalpy in region 3 h(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpsdt3
Isentropic specific enthalpy in region 3 h(p,s) with given good guess in d and T

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofps4
Isentropic specific enthalpy in region 4 h(p,s)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.hofpT5
Specific enthalpy in region 5 h(p,T)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.water_hisentropic
Isentropic specific enthalpy from p,s (preferably use water_hisentropic_dyn in dynamic simulation!)

Function Modelica.Media.Water.IF97_Utilities.BaseIF97.Isentropic.water_hisentropic_dyn
Isentropic specific enthalpy from p,s and good guesses of d and T