modelOverhang
Roof overhangs
Extends from IDEAS.Buildings.Components.Shading.Interfaces.PartialShadingDevice.
Information
Shading model of an overhang above a window where hWin is the window height, wWin is the window width, gap is the vertical distance between the window upper edge and the overhang, dep is the horizontal distance between the window glazing and the overhang and wLeft and wRight are respectively the horizontal overhang widths.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | controlled (from PartialShading) | true | if true, shading has a control input |
| Modelica.Units.SI.Area | A_glazing (from PartialShading) | Surface area of the glazing | |
| Modelica.Units.SI.Area | A_frame (from PartialShading) | Surface area of the frame | |
| Modelica.Units.SI.Angle | inc (from PartialShading) | Surface inclination | |
| Modelica.Units.SI.Temperature | Tenv_nom (from PartialShading) | 280 | Nominal temperature of environment |
| Modelica.Units.SI.Emissivity | epsSw_frame (from PartialShading) | Short wave solar absorption coefficient of the frame | |
| Modelica.Units.SI.Emissivity | epsLw_frame (from PartialShading) | Long wave solar absorption coefficient of the frame | |
| Modelica.Units.SI.Emissivity | epsLw_glazing (from PartialShading) | Long wave solar absorption coefficient of the glazing | |
| Modelica.Units.SI.Emissivity | epsSw_shading (from PartialShading) | 0.8 | Short wave emissivity of the shading object |
| Real | g_glazing (from PartialShading) | Nominal shading coefficient of the glazing | |
| Boolean | linCon (from PartialShading) | false | Linearise convective heat transfer |
| Boolean | linRad (from PartialShading) | false | Linearise radiative heat transfer |
| Boolean | haveBoundaryPorts (from PartialShading) | true | Include ports for setting boundary conditions |
| Boolean | haveFrame (from PartialShading) | A_frame*epsLw_frame > 0 | Frame enabled |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hSha (from PartialShading) | 12 | Equivalent thermal conductance of the shading device |
| Real | fraSunDifSky | 1 - vieAngOverhang/(0.5*Modelica.Constants.pi) | Fraction of window area exposed to diffuse sun light |
| Window properties | |||
| Modelica.Units.SI.Angle | azi (from PartialShading) | Window azimuth angle | |
| Modelica.Units.SI.Length | hWin | Window height | |
| Modelica.Units.SI.Length | wWin | Window width | |
| Overhang properties | |||
| Modelica.Units.SI.Length | wLeft | Left overhang width measured from the window corner | |
| Modelica.Units.SI.Length | wRight | Right overhang width measured from the window corner | |
| Modelica.Units.SI.Length | dep | Overhang depth perpendicular to the wall plane | |
| Modelica.Units.SI.Length | gap | Distance between window upper edge and overhang lower edge | |