WINDOWMATERIAL:SCREEN

Window screen physical properties. Can only be located on the exterior side of a window construction.

Name

Type: alphanumeric
Enter a unique name for this window screen material.

Reflected Beam Transmittance Accounting Method

Type: choice (DoNotModel, ModelAsDirectBeam or ModelAsDiffuse)
Select the method used to account for the beam solar reflected off the material surface.
Default: ModelAsDiffuse

Diffuse Solar Reflectance

Type: real number
Diffuse reflectance of the screen material over the entire solar radiation spectrum. Assumed to be the same for both sides of the screen.
Unit: dimensionless
Minimum: 0

Diffuse Visible Reflectance

Type: real number
Diffuse visible reflectance of the screen material averaged over the solar spectrum and weighted by the response of the human eye. Assumed to be the same for both sides of the screen.
Unit: dimensionless
Minimum: 0

Thermal Hemispherical Emissivity

Type: real number
Long-wave emissivity of the screen material. Assumed to be the same for both sides of the screen.
Unit: dimensionless
Default: 0.9

Conductivity

Type: real number
Thermal conductivity of the screen material. Default is for aluminum.
Unit: W/m-K
Default: 221.0

Screen Material Spacing

Type: real number
Spacing assumed to be the same in both directions.
Unit: m

Screen Material Diameter

Type: real number
Diameter assumed to be the same in both directions.
Unit: m

Screen to Glass Distance

Type: real number
Distance from the window screen to the adjacent glass surface.
Unit: m
Minimum: 0.001
Maximum: 1.0
Default: 0.025

Top Opening Multiplier

Type: real number
Effective area for air flow at the top of the screen divided by the perpendicular area between the glass and the top of the screen.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Bottom Opening Multiplier

Type: real number
Effective area for air flow at the bottom of the screen divided by the perpendicular area between the glass and the bottom of the screen.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Left Side Opening Multiplier

Type: real number
Effective area for air flow at the left side of the screen divided by the perpendicular area between the glass and the left side of the screen.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Right Side Opening Multiplier

Type: real number
Effective area for air flow at the right side of the screen divided by the perpendicular area between the glass and the right side of the screen.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Angle of Resolution for Screen Transmittance Output Map

Type: choice (0, 1, 2, 3 or 5)
Select the resolution of azimuth and altitude angles for the screen transmittance map. A value of 0 means no transmittance map will be generated. Valid values for this field are 0, 1, 2, 3 and 5.
Unit: deg
Default: 0