Buildings.HeatTransfer.Data.OpaqueSurfaces

Package with thermophysical properties for opaque surfaces

Information

Package with records for opaque surfaces.

Package Content

Name Description

Generic Thermal properties of opaque surfaces

Black Black surface with epsLW=1.0, epsSW=1.0

Gray Gray surface with epsLW=0.5, epsSW=0.5

White White surface with epsLW=0.0, epsSW=0.0

Name	Description
Generic	Thermal properties of opaque surfaces
Black	Black surface with epsLW=1.0, epsSW=1.0
Gray	Gray surface with epsLW=0.5, epsSW=0.5
White	White surface with epsLW=0.0, epsSW=0.0

Buildings.HeatTransfer.Data.OpaqueSurfaces.Generic

Thermal properties of opaque surfaces

Information

This record implements thermophysical properties for opaque surfaces.

Extends from Modelica.Icons.Record (Icon for a record).

Parameters

Type Name Default Description

Area A Area [m2]

Angle til Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]

Emissivity epsLW 0.84 Long wave emissivity [1]

Emissivity epsSW 0.84 Short wave emissivity [1]

Type	Name	Default	Description
Area	A		Area [m2]
Angle	til		Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]
Emissivity	epsLW	0.84	Long wave emissivity [1]
Emissivity	epsSW	0.84	Short wave emissivity [1]

Modelica definition

record Generic "Thermal properties of opaque surfaces"
    extends Modelica.Icons.Record;
 parameter Modelica.SIunits.Area A "Area";
 parameter Modelica.SIunits.Angle til 
    "Surface tilt (0: ceiling, pi/2: wall, pi: floor";
 parameter Modelica.SIunits.Emissivity epsLW=0.84 "Long wave emissivity";
 parameter Modelica.SIunits.Emissivity epsSW=0.84 "Short wave emissivity";
 final parameter Boolean isFloor=til > 2.74889125 and til < 3.53428875 
    "Flag, true if construction is a floor";

end Generic;

Buildings.HeatTransfer.Data.OpaqueSurfaces.Black

Black surface with epsLW=1.0, epsSW=1.0

Parameters

Type Name Default Description

Area A Area [m2]

Angle til Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]

Emissivity epsLW 1.0 Long wave emissivity [1]

Emissivity epsSW 1.0 Short wave emissivity [1]

Type	Name	Default	Description
Area	A		Area [m2]
Angle	til		Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]
Emissivity	epsLW	1.0	Long wave emissivity [1]
Emissivity	epsSW	1.0	Short wave emissivity [1]

Modelica definition

record Black=Buildings.HeatTransfer.Data.OpaqueSurfaces.Generic (epsLW=1.0,
      epsSW=1.0) "Black surface with epsLW=1.0, epsSW=1.0";

Buildings.HeatTransfer.Data.OpaqueSurfaces.Gray

Gray surface with epsLW=0.5, epsSW=0.5

Parameters

Type Name Default Description

Area A Area [m2]

Angle til Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]

Emissivity epsLW 0.5 Long wave emissivity [1]

Emissivity epsSW 0.5 Short wave emissivity [1]

Type	Name	Default	Description
Area	A		Area [m2]
Angle	til		Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]
Emissivity	epsLW	0.5	Long wave emissivity [1]
Emissivity	epsSW	0.5	Short wave emissivity [1]

Modelica definition

record Gray=Buildings.HeatTransfer.Data.OpaqueSurfaces.Generic (epsLW=0.5,
      epsSW=0.5) "Gray surface with epsLW=0.5, epsSW=0.5";

Buildings.HeatTransfer.Data.OpaqueSurfaces.White

White surface with epsLW=0.0, epsSW=0.0

Parameters

Type Name Default Description

Area A Area [m2]

Angle til Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]

Emissivity epsLW 0.0 Long wave emissivity [1]

Emissivity epsSW 0.0 Short wave emissivity [1]

Type	Name	Default	Description
Area	A		Area [m2]
Angle	til		Surface tilt (0: ceiling, pi/2: wall, pi: floor [rad]
Emissivity	epsLW	0.0	Long wave emissivity [1]
Emissivity	epsSW	0.0	Short wave emissivity [1]

Modelica definition

record White=Buildings.HeatTransfer.Data.OpaqueSurfaces.Generic (epsLW=0.0,
      epsSW=0.0) "White surface with epsLW=0.0, epsSW=0.0";

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