Buildings.HeatTransfer.Data.SolidsPCM
Package with solid material, characterized by thermal conductance, density and specific heat capacity
Information
Package with records for solid materials with embedded phase change material. The material is characterized by its thermal conductivity, mass density and specific heat capacity, as well as the solidus and liquidus temperatures, and the latent heat.
For a description of the parameter nStaRef, which is
used to generate the spatial grid, see the documentation of the package
Buildings.HeatTransfer.Data.Solids.
Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).
Package Content
| Name | Description |
|---|---|
 Generic
|
Thermal properties of solids with heat storage |
| PCM020
|
Wallboard with 20% of microencapsulated paraffin |
| PCM030
|
Wallboard with 30% of microencapsulated paraffin |
| MicronalSmartBoard23
|
Micronal PCM SmartBoard 23 |
| MicronalSmartBoard26
|
Micronal PCM SmartBoard 26 |
Buildings.HeatTransfer.Data.SolidsPCM.Generic
Thermal properties of solids with heat storage
Information
Generic record for phase change materials. The record extends from Buildings.HeatTransfer.Data.BaseClasses.Material and declares parameters and constants for phase change materials.
Extends from Buildings.HeatTransfer.Data.BaseClasses.Material (Thermal properties of materials w/o storage).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Length | x | Material thickness [m] | |
| ThermalConductivity | k | Thermal conductivity [W/(m.K)] | |
| SpecificHeatCapacity | c | Specific heat capacity [J/(kg.K)] | |
| Density | d | Mass density [kg/m3] | |
| Real | R | x/k | Thermal resistance of a unit area of material [m2.K/W] |
| Integer | nStaRef | 3 | Number of state variables in a reference material of 0.2 m concrete |
| Boolean | steadyState | (c < Modelica.Constants.eps ... | Flag, if true, then material is computed using steady-state heat conduction |
| Properties for phase change material | |||
| Temperature | TSol | Solidus temperature, used only for PCM. [K] | |
| Temperature | TLiq | Liquidus temperature, used only for PCM [K] | |
| SpecificInternalEnergy | LHea | Latent heat of phase change [J/kg] | |
| Advanced | |||
| Integer | nSta | max(1, integer(ceil(nStaReal... | 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
Buildings.HeatTransfer.Data.SolidsPCM.PCM020
Wallboard with 20% of microencapsulated paraffin
Information
This material record is for PCM treated wallboard. The data source is Feustel (1995).
References
Feustel, Helmut E. Simplified numerical description of latent storage characteristics for phase change wallboard. LBNL-Technical Report 36933. 1995. DOI: 10.2172/70723.
Extends from Buildings.HeatTransfer.Data.SolidsPCM.Generic (Thermal properties of solids with heat storage).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Length | x | Material thickness [m] | |
| ThermalConductivity | k | 0.204 | Thermal conductivity [W/(m.K)] |
| SpecificHeatCapacity | c | 1341 | Specific heat capacity [J/(kg.K)] |
| Density | d | 800 | Mass density [kg/m3] |
| Integer | nStaRef | 3 | Number of state variables in a reference material of 0.2 m concrete |
| Boolean | steadyState | (c < Modelica.Constants.eps ... | Flag, if true, then material is computed using steady-state heat conduction |
| Properties for phase change material | |||
| Temperature | TSol | 273.15 + 23 | Solidus temperature, used only for PCM. [K] |
| Temperature | TLiq | 273.15 + 27 | Liquidus temperature, used only for PCM [K] |
| SpecificInternalEnergy | LHea | 38900 | Latent heat of phase change [J/kg] |
| Advanced | |||
| Integer | nSta | max(1, integer(ceil(nStaReal... | 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
Buildings.HeatTransfer.Data.SolidsPCM.PCM030
Wallboard with 30% of microencapsulated paraffin
Information
This material record is for PCM treated wallboard. The data source is Feustel (1995).
References
Feustel, Helmut E. Simplified numerical description of latent storage characteristics for phase change wallboard. LBNL-Technical Report 36933. 1995. DOI: 10.2172/70723.
Extends from Buildings.HeatTransfer.Data.SolidsPCM.Generic (Thermal properties of solids with heat storage).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Length | x | Material thickness [m] | |
| ThermalConductivity | k | 0.232 | Thermal conductivity [W/(m.K)] |
| SpecificHeatCapacity | c | 1467 | Specific heat capacity [J/(kg.K)] |
| Density | d | 998 | Mass density [kg/m3] |
| Integer | nStaRef | 3 | Number of state variables in a reference material of 0.2 m concrete |
| Boolean | steadyState | (c < Modelica.Constants.eps ... | Flag, if true, then material is computed using steady-state heat conduction |
| Properties for phase change material | |||
| Temperature | TSol | 273.15 + 24 | Solidus temperature, used only for PCM. [K] |
| Temperature | TLiq | 273.15 + 26 | Liquidus temperature, used only for PCM [K] |
| SpecificInternalEnergy | LHea | 58300 | Latent heat of phase change [J/kg] |
| Advanced | |||
| Integer | nSta | max(1, integer(ceil(nStaReal... | 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
Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard23
Micronal PCM SmartBoard 23
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Length | x | Material thickness [m] | |
| ThermalConductivity | k | 0.18 | Thermal conductivity [W/(m.K)] |
| SpecificHeatCapacity | c | 1200 | Specific heat capacity [J/(kg.K)] |
| Density | d | 767 | Mass density [kg/m3] |
| Integer | nStaRef | 3 | Number of state variables in a reference material of 0.2 m concrete |
| Boolean | steadyState | (c < Modelica.Constants.eps ... | Flag, if true, then material is computed using steady-state heat conduction |
| Properties for phase change material | |||
| Temperature | TSol | 273.15 + 22.99 | Solidus temperature, used only for PCM. [K] |
| Temperature | TLiq | 273.15 + 23.01 | Liquidus temperature, used only for PCM [K] |
| SpecificInternalEnergy | LHea | 28696 | Latent heat of phase change [J/kg] |
| Advanced | |||
| Integer | nSta | max(1, integer(ceil(nStaReal... | 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
Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard26
Micronal PCM SmartBoard 26
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Length | x | Material thickness [m] | |
| ThermalConductivity | k | 0.18 | Thermal conductivity [W/(m.K)] |
| SpecificHeatCapacity | c | 1200 | Specific heat capacity [J/(kg.K)] |
| Density | d | 767 | Mass density [kg/m3] |
| Integer | nStaRef | 3 | Number of state variables in a reference material of 0.2 m concrete |
| Boolean | steadyState | (c < Modelica.Constants.eps ... | Flag, if true, then material is computed using steady-state heat conduction |
| Properties for phase change material | |||
| Temperature | TSol | 273.15 + 25.99 | Solidus temperature, used only for PCM. [K] |
| Temperature | TLiq | 273.15 + 26.01 | Liquidus temperature, used only for PCM [K] |
| SpecificInternalEnergy | LHea | 28696 | Latent heat of phase change [J/kg] |
| Advanced | |||
| Integer | nSta | max(1, integer(ceil(nStaReal... | 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 |