Buildings.HeatTransfer.Data.OpaqueConstructions
Package with opaque constructions for floors, walls, etc.
Information
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).
Package Content
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 |
Buildings.HeatTransfer.Data.OpaqueConstructions.Generic
Thermal properties of opaque constructions
Information
Generic record 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).
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.
Parameters
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | Number of layers | |
Material | 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 |
Modelica definition
Buildings.HeatTransfer.Data.OpaqueConstructions.Insulation100Concrete200
Construction with 100 mm insulation and 200 mm concrete
Parameters
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | 2 | Number of layers |
Material | 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 |
Modelica definition
Buildings.HeatTransfer.Data.OpaqueConstructions.Brick120
Construction with 120mm brick
Parameters
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | 1 | Number of layers |
Material | 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 |
Modelica definition
Buildings.HeatTransfer.Data.OpaqueConstructions.Concrete200
Construction with 200mm concrete
Parameters
Type | Name | Default | Description |
---|---|---|---|
Integer | nLay | 1 | Number of layers |
Material | 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 |