Buildings.HeatTransfer.Data.Resistances
Package with thermal resistances
Information
Package with records that implement thermal properties of heat resistances.Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).
Package Content
| Name | Description |
|---|---|
 Generic
|
Thermal properties of heat resistances |
| Carpet
|
Carpet |
Buildings.HeatTransfer.Data.Resistances.Generic
Thermal properties of heat resistances
Information
Generic record for thermal properties of heat resistances.Extends from Buildings.HeatTransfer.Data.BaseClasses.Material (Thermal properties of materials w/o storage).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Length | x | 0 | Material thickness [m] |
| ThermalConductivity | k | 0 | Thermal conductivity [W/(m.K)] |
| SpecificHeatCapacity | c | 0 | Specific heat capacity [J/(kg.K)] |
| Density | d | 0 | Mass density [kg/m3] |
| Real | R | Thermal resistance of a unit area of material [m2.K/W] | |
| Integer | nStaRef | 0 | Number of state variables in a reference material of 0.2 m concrete |
| Boolean | steadyState | true | Flag, if true, then material is computed using steady-state heat conduction |
| Properties for phase change material | |||
| Temperature | TSol | 293.15 | Solidus temperature, used only for PCM. [K] |
| Temperature | TLiq | 293.15 | Liquidus temperature, used only for PCM [K] |
| SpecificInternalEnergy | LHea | 0 | Latent heat of phase change [J/kg] |
| Advanced | |||
| Integer | nSta | 1 | Actual number of state variables in material |
| Real | piRef | 331.4 | Ratio x/sqrt(alpha) for reference material of 0.2 m concrete |
| Real | piMat | if steadyState then piRef el... | Ratio x/sqrt(alpha) |
| Real | nStaReal | nStaRef*piMat/piRef | Number of states as a real number |
Modelica definition
record Generic "Thermal properties of heat resistances"
extends Buildings.HeatTransfer.Data.BaseClasses.Material(
final c=0,
final d=0,
final k=0,
final x=0,
final nStaRef=0,
final nSta=1,
final steadyState=true,
final TSol=293.15,
final TLiq=293.15,
final LHea=0,
final phasechange=false);
end Generic;
Buildings.HeatTransfer.Data.Resistances.Carpet
Carpet
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | R | 0.2165 | Thermal resistance of a unit area of material [m2.K/W] |
| Advanced | |||
| Real | piRef | 331.4 | Ratio x/sqrt(alpha) for reference material of 0.2 m concrete |
| Real | piMat | if steadyState then piRef el... | Ratio x/sqrt(alpha) |
| Real | nStaReal | nStaRef*piMat/piRef | Number of states as a real number |