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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
Buildings.HeatTransfer.Data.SolidsPCM.Generic Generic Thermal properties of solids with heat storage
Buildings.HeatTransfer.Data.SolidsPCM.PCM020 PCM020 Wallboard with 20% of microencapsulated paraffin
Buildings.HeatTransfer.Data.SolidsPCM.PCM030 PCM030 Wallboard with 30% of microencapsulated paraffin
Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard23 MicronalSmartBoard23 Micronal PCM SmartBoard 23
Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard26 MicronalSmartBoard26 Micronal PCM SmartBoard 26

Buildings.HeatTransfer.Data.SolidsPCM.Generic 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

TypeNameDefaultDescription
Lengthx Material thickness [m]
ThermalConductivityk Thermal conductivity [W/(m.K)]
SpecificHeatCapacityc Specific heat capacity [J/(kg.K)]
Densityd Mass density [kg/m3]
RealRx/kThermal resistance of a unit area of material [m2.K/W]
IntegernStaRef3Number of state variables in a reference material of 0.2 m concrete
BooleansteadyState(c < Modelica.Constants.eps ...Flag, if true, then material is computed using steady-state heat conduction
Properties for phase change material
TemperatureTSol Solidus temperature, used only for PCM. [K]
TemperatureTLiq Liquidus temperature, used only for PCM [K]
SpecificInternalEnergyLHea Latent heat of phase change [J/kg]
Advanced
IntegernStamax(1, integer(ceil(nStaReal...Actual number of state variables in material
RealpiRef331.4Ratio x/sqrt(alpha) for reference material of 0.2 m concrete
RealpiMatif steadyState then piRef el...Ratio x/sqrt(alpha)
RealnStaRealnStaRef*piMat/piRefNumber of states as a real number

Modelica definition

record Generic "Thermal properties of solids with heat storage" extends Buildings.HeatTransfer.Data.BaseClasses.Material(final R=x/k, final phasechange=true); end Generic;

Buildings.HeatTransfer.Data.SolidsPCM.PCM020 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

TypeNameDefaultDescription
Lengthx Material thickness [m]
ThermalConductivityk0.204Thermal conductivity [W/(m.K)]
SpecificHeatCapacityc1341Specific heat capacity [J/(kg.K)]
Densityd800Mass density [kg/m3]
IntegernStaRef3Number of state variables in a reference material of 0.2 m concrete
BooleansteadyState(c < Modelica.Constants.eps ...Flag, if true, then material is computed using steady-state heat conduction
Properties for phase change material
TemperatureTSol273.15 + 23Solidus temperature, used only for PCM. [K]
TemperatureTLiq273.15 + 27Liquidus temperature, used only for PCM [K]
SpecificInternalEnergyLHea38900Latent heat of phase change [J/kg]
Advanced
IntegernStamax(1, integer(ceil(nStaReal...Actual number of state variables in material
RealpiRef331.4Ratio x/sqrt(alpha) for reference material of 0.2 m concrete
RealpiMatif steadyState then piRef el...Ratio x/sqrt(alpha)
RealnStaRealnStaRef*piMat/piRefNumber of states as a real number

Modelica definition

record PCM020 =Buildings.HeatTransfer.Data.SolidsPCM.Generic ( k=0.204, d=800, c=1341, TSol=273.15+23, TLiq=273.15+27, LHea=38900) "Wallboard with 20% of microencapsulated paraffin";

Buildings.HeatTransfer.Data.SolidsPCM.PCM030 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

TypeNameDefaultDescription
Lengthx Material thickness [m]
ThermalConductivityk0.232Thermal conductivity [W/(m.K)]
SpecificHeatCapacityc1467Specific heat capacity [J/(kg.K)]
Densityd998Mass density [kg/m3]
IntegernStaRef3Number of state variables in a reference material of 0.2 m concrete
BooleansteadyState(c < Modelica.Constants.eps ...Flag, if true, then material is computed using steady-state heat conduction
Properties for phase change material
TemperatureTSol273.15 + 24Solidus temperature, used only for PCM. [K]
TemperatureTLiq273.15 + 26Liquidus temperature, used only for PCM [K]
SpecificInternalEnergyLHea58300Latent heat of phase change [J/kg]
Advanced
IntegernStamax(1, integer(ceil(nStaReal...Actual number of state variables in material
RealpiRef331.4Ratio x/sqrt(alpha) for reference material of 0.2 m concrete
RealpiMatif steadyState then piRef el...Ratio x/sqrt(alpha)
RealnStaRealnStaRef*piMat/piRefNumber of states as a real number

Modelica definition

record PCM030 =Buildings.HeatTransfer.Data.SolidsPCM.Generic ( k=0.232, d=998, c=1467, TSol=273.15+24, TLiq=273.15+26, LHea=58300) "Wallboard with 30% of microencapsulated paraffin";

Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard23 Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard23

Micronal PCM SmartBoard 23

Parameters

TypeNameDefaultDescription
Lengthx Material thickness [m]
ThermalConductivityk0.18Thermal conductivity [W/(m.K)]
SpecificHeatCapacityc1200Specific heat capacity [J/(kg.K)]
Densityd767Mass density [kg/m3]
IntegernStaRef3Number of state variables in a reference material of 0.2 m concrete
BooleansteadyState(c < Modelica.Constants.eps ...Flag, if true, then material is computed using steady-state heat conduction
Properties for phase change material
TemperatureTSol273.15 + 22.99Solidus temperature, used only for PCM. [K]
TemperatureTLiq273.15 + 23.01Liquidus temperature, used only for PCM [K]
SpecificInternalEnergyLHea28696Latent heat of phase change [J/kg]
Advanced
IntegernStamax(1, integer(ceil(nStaReal...Actual number of state variables in material
RealpiRef331.4Ratio x/sqrt(alpha) for reference material of 0.2 m concrete
RealpiMatif steadyState then piRef el...Ratio x/sqrt(alpha)
RealnStaRealnStaRef*piMat/piRefNumber of states as a real number

Modelica definition

record MicronalSmartBoard23 = Buildings.HeatTransfer.Data.SolidsPCM.Generic ( k=0.18, d=767, c=1200, TSol=273.15+22.99, TLiq=273.15+23.01, LHea=28696) "Micronal PCM SmartBoard 23";

Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard26 Buildings.HeatTransfer.Data.SolidsPCM.MicronalSmartBoard26

Micronal PCM SmartBoard 26

Parameters

TypeNameDefaultDescription
Lengthx Material thickness [m]
ThermalConductivityk0.18Thermal conductivity [W/(m.K)]
SpecificHeatCapacityc1200Specific heat capacity [J/(kg.K)]
Densityd767Mass density [kg/m3]
IntegernStaRef3Number of state variables in a reference material of 0.2 m concrete
BooleansteadyState(c < Modelica.Constants.eps ...Flag, if true, then material is computed using steady-state heat conduction
Properties for phase change material
TemperatureTSol273.15 + 25.99Solidus temperature, used only for PCM. [K]
TemperatureTLiq273.15 + 26.01Liquidus temperature, used only for PCM [K]
SpecificInternalEnergyLHea28696Latent heat of phase change [J/kg]
Advanced
IntegernStamax(1, integer(ceil(nStaReal...Actual number of state variables in material
RealpiRef331.4Ratio x/sqrt(alpha) for reference material of 0.2 m concrete
RealpiMatif steadyState then piRef el...Ratio x/sqrt(alpha)
RealnStaRealnStaRef*piMat/piRefNumber of states as a real number

Modelica definition

record MicronalSmartBoard26 = Buildings.HeatTransfer.Data.SolidsPCM.Generic ( k=0.18, d=767, c=1200, TSol=273.15+25.99, TLiq=273.15+26.01, LHea=28696) "Micronal PCM SmartBoard 26";

http://simulationresearch.lbl.gov/modelica