Modelica.Thermal.FluidHeatFlow.Media

Information

Main Authors:

Anton Haumer
Technical Consulting & Electrical Engineering
A-3423 St.Andrae-Woerdern, Austria
email: a.haumer@haumer.at

Dr. Christian Kral
Austrian Institute of Technology, AIT
Giefinggasse 2
A-1210 Vienna, Austria

Copyright © 1998-2010, Modelica Association, Anton Haumer and Austrian Institute of Technology, AIT.

This Modelica package is free software and the use is completely at your own risk; it can be redistributed and/or modified under the terms of the Modelica License 2. For license conditions (including the disclaimer of warranty) see Modelica.UsersGuide.ModelicaLicense2 or visit http://www.modelica.org/licenses/ModelicaLicense2.

Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).

Package Content

Name	Description
Medium	Record containing media properties
Air_30degC	Medium: properties of air at 30 degC
Air_70degC	Medium: properties of air at 70 degC
Water	Medium: properties of water

Modelica.Thermal.FluidHeatFlow.Media.Medium

Information

Extends from Modelica.Icons.Record (Icon for records).

Parameters

Type	Name	Default	Description
Density	rho	1	Density [kg/m3]
SpecificHeatCapacity	cp	1	Specific heat capacity at constant pressure [J/(kg.K)]
SpecificHeatCapacity	cv	1	Specific heat capacity at constant volume [J/(kg.K)]
ThermalConductivity	lamda	1	Thermal conductivity [W/(m.K)]
KinematicViscosity	nue	1	Kinematic viscosity [m2/s]

Modelica definition

record Medium "Record containing media properties"
  extends Modelica.Icons.Record;
  parameter Modelica.SIunits.Density rho = 1 "Density";
  parameter Modelica.SIunits.SpecificHeatCapacity cp = 1 
    "Specific heat capacity at constant pressure";
  parameter Modelica.SIunits.SpecificHeatCapacity cv = 1 
    "Specific heat capacity at constant volume";
  parameter Modelica.SIunits.ThermalConductivity lamda = 1 
    "Thermal conductivity";
  parameter Modelica.SIunits.KinematicViscosity nue = 1 "Kinematic viscosity";
end Medium;

Modelica.Thermal.FluidHeatFlow.Media.Air_30degC

Information

Extends from Medium (Record containing media properties).

Parameters

Type	Name	Default	Description
Density	rho	1.149	Density [kg/m3]
SpecificHeatCapacity	cp	1007	Specific heat capacity at constant pressure [J/(kg.K)]
SpecificHeatCapacity	cv	720	Specific heat capacity at constant volume [J/(kg.K)]
ThermalConductivity	lamda	0.0264	Thermal conductivity [W/(m.K)]
KinematicViscosity	nue	16.3E-6	Kinematic viscosity [m2/s]

Modelica definition

record Air_30degC "Medium: properties of air at 30 degC"
extends Medium(
  rho=1.149,
  cp=1007,
  cv= 720,
  lamda=0.0264,
  nue=16.3E-6);
end Air_30degC;

Modelica.Thermal.FluidHeatFlow.Media.Air_70degC

Information

Extends from Medium (Record containing media properties).

Parameters

Type	Name	Default	Description
Density	rho	1.015	Density [kg/m3]
SpecificHeatCapacity	cp	1010	Specific heat capacity at constant pressure [J/(kg.K)]
SpecificHeatCapacity	cv	723	Specific heat capacity at constant volume [J/(kg.K)]
ThermalConductivity	lamda	0.0293	Thermal conductivity [W/(m.K)]
KinematicViscosity	nue	20.3E-6	Kinematic viscosity [m2/s]

Modelica definition

record Air_70degC "Medium: properties of air at 70 degC"
extends Medium(
  rho=1.015,
  cp=1010,
  cv= 723,
  lamda=0.0293,
  nue=20.3E-6);
end Air_70degC;

Modelica.Thermal.FluidHeatFlow.Media.Water

Information

Extends from Medium (Record containing media properties).

Parameters

Type	Name	Default	Description
Density	rho	995.6	Density [kg/m3]
SpecificHeatCapacity	cp	4177	Specific heat capacity at constant pressure [J/(kg.K)]
SpecificHeatCapacity	cv	4177	Specific heat capacity at constant volume [J/(kg.K)]
ThermalConductivity	lamda	0.615	Thermal conductivity [W/(m.K)]
KinematicViscosity	nue	0.8E-6	Kinematic viscosity [m2/s]

Modelica definition

record Water "Medium: properties of water"
extends Medium(
  rho=995.6,
  cp=4177,
  cv=4177,
  lamda=0.615,
  nue=0.8E-6);
end Water;