Package with material definitions for constructions
with one or more layers of material.
By convention, layer[1]
is facing the outside, and the last
layer is facing the room-side.
This is the same convention as is used in EnergyPlus and in Window 6.
The parameters absIR_a
and absIR_b
are used to compute infrared heat radiation (in the infrared spectrum).
The parameters absSol_a
and absSol_b
are used to compute solar heat radiation (in the solar spectrum).
Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).
Name | Description |
---|---|
Generic | Thermal properties of opaque constructions |
Insulation100Concrete200 | Construction with 100 mm insulation and 200 mm concrete |
Brick120 | Construction with 120mm brick |
Concrete200 | Construction with 200mm concrete |
layer[1]
is facing the outside, and the last
layer is facing the room-side.
This is the same convention as is used in EnergyPlus and in Window 6.
The parameters absIR_a
and absIR_b
are used to compute infrared heat radiation (in the infrared spectrum).
The parameters absSol_a
and absSol_b
are used to compute solar heat radiation (in the solar spectrum).
The parameter roughness_a
is used if the convective heat transfer
coefficient of the exterior surface is computed based on the wind-speed, wind-direction
and temperature difference. See
Buildings.HeatTransfer.Convection.Exterior.
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | Number of layers | |
Generic | material[nLay] | Layer by layer declaration of material, starting from outside to room-side | |
Emissivity | absIR_a | 0.9 | Infrared absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absIR_b | 0.9 | Infrared absorptivity of surface b (usually room-facing surface) [1] |
Emissivity | absSol_a | 0.5 | Solar absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absSol_b | 0.5 | Solar absorptivity of surface b (usually room-facing surface) [1] |
SurfaceRoughness | roughness_a | Buildings.HeatTransfer.Types... | Exterior surface roughness |
record Generic "Thermal properties of opaque constructions" parameter Integer nLay(min=1, fixed=true) "Number of layers";parameter Solids.Generic material[nLay] "Layer by layer declaration of material, starting from outside to room-side"; final parameter Real R(unit="m2.K/W")=sum(material[:].R) "Thermal resistance per unit area"; parameter Modelica.SIunits.Emissivity absIR_a=0.9 "Infrared absorptivity of surface a (usually outside-facing surface)"; parameter Modelica.SIunits.Emissivity absIR_b=0.9 "Infrared absorptivity of surface b (usually room-facing surface)"; parameter Modelica.SIunits.Emissivity absSol_a=0.5 "Solar absorptivity of surface a (usually outside-facing surface)"; parameter Modelica.SIunits.Emissivity absSol_b=0.5 "Solar absorptivity of surface b (usually room-facing surface)"; parameter Buildings.HeatTransfer.Types.SurfaceRoughness roughness_a= Buildings.HeatTransfer.Types.SurfaceRoughness.Medium "Exterior surface roughness";end Generic;
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | 2 | Number of layers |
Generic | material[nLay] | {Solids.InsulationBoard(x=0.... | Layer by layer declaration of material, starting from outside to room-side |
Emissivity | absIR_a | 0.9 | Infrared absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absIR_b | 0.9 | Infrared absorptivity of surface b (usually room-facing surface) [1] |
Emissivity | absSol_a | 0.5 | Solar absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absSol_b | 0.5 | Solar absorptivity of surface b (usually room-facing surface) [1] |
SurfaceRoughness | roughness_a | Buildings.HeatTransfer.Types... | Exterior surface roughness |
record Insulation100Concrete200 = Buildings.HeatTransfer.Data.OpaqueConstructions.Generic (material={ Solids.InsulationBoard(x=0.1),Solids.Concrete(x=0.2)}, final nLay=2) "Construction with 100 mm insulation and 200 mm concrete";
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | 1 | Number of layers |
Generic | material[nLay] | {Solids.Brick(x=0.12)} | Layer by layer declaration of material, starting from outside to room-side |
Emissivity | absIR_a | 0.9 | Infrared absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absIR_b | 0.9 | Infrared absorptivity of surface b (usually room-facing surface) [1] |
Emissivity | absSol_a | 0.5 | Solar absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absSol_b | 0.5 | Solar absorptivity of surface b (usually room-facing surface) [1] |
SurfaceRoughness | roughness_a | Buildings.HeatTransfer.Types... | Exterior surface roughness |
record Brick120 = Buildings.HeatTransfer.Data.OpaqueConstructions.Generic (material={ Solids.Brick(x=0.12)}, final nLay=1) "Construction with 120mm brick";
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | 1 | Number of layers |
Generic | material[nLay] | {Solids.Concrete(x=0.2)} | Layer by layer declaration of material, starting from outside to room-side |
Emissivity | absIR_a | 0.9 | Infrared absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absIR_b | 0.9 | Infrared absorptivity of surface b (usually room-facing surface) [1] |
Emissivity | absSol_a | 0.5 | Solar absorptivity of surface a (usually outside-facing surface) [1] |
Emissivity | absSol_b | 0.5 | Solar absorptivity of surface b (usually room-facing surface) [1] |
SurfaceRoughness | roughness_a | Buildings.HeatTransfer.Types... | Exterior surface roughness |
record Concrete200 = Buildings.HeatTransfer.Data.OpaqueConstructions.Generic (material={ Solids.Concrete(x=0.2)}, final nLay=1) "Construction with 200mm concrete";