WINDOWMATERIAL:GLAZING:EQUIVALENTLAYER

Glass material properties for Windows or Glass Doors Transmittance/Reflectance input method.

Name

Type: alphanumeric

Optical Data Type

Type: choice (Spectral or SpectralAverage)
Spectral is not currently supported and SpectralAverage is the default.
Default: SpectralAverage

Window Glass Spectral Data Set Name

Type: list of objects ( or MATERIALPROPERTY:GLAZINGSPECTRALDATA)
Spectral data is not currently supported. Used only when Optical Data Type = Spectral

Front Side Beam-Beam Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Back Side Beam-Beam Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Front Side Beam-Beam Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Front Side is side closest to outdoor air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Back Side Beam-Beam Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Back Side is side closest to zone air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Front Side Beam-Beam Visible Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Back Side Beam-Beam Visible Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Front Side Beam-Beam Visible Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Front Side is side closest to outdoor air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Back Side Beam-Beam Visible Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Back Side is side closest to zone air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0

Front Side Beam-Diffuse Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Back Side Beam-Diffuse Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Front Side Beam-Diffuse Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Front Side is side closest to outdoor air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Back Side Beam-Diffuse Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Back Side is side closest to zone air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Front Side Beam-Diffuse Visible Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Back Side Beam-Diffuse Visible Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Front Side Beam-Diffuse Visible Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Front Side is side closest to outdoor air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Back Side Beam-Diffuse Visible Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage Back Side is side closest to zone air
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Diffuse-Diffuse Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage If this field is autocalculate, then the diffuse-diffuse solar transmittance is automatically estimated from other inputs and used in subsequent calculations. If this field is zero or positive, then the value entered here will be used.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: autocalculate

Front Side Diffuse-Diffuse Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage If this field is autocalculate, then the front diffuse-diffuse solar reflectance is automatically estimated from other inputs and used in subsequent calculations. If this field is zero or positive, then the value entered here will be used. Front Side is side closest to outdoor air.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: autocalculate

Back Side Diffuse-Diffuse Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage If this field is autocalculate, then the back diffuse-diffuse solar reflectance is automatically estimated from other inputs and used in subsequent calculations. If this field is zero or positive, then the value entered here will be used. Back side is side closest to indoor air.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: autocalculate

Diffuse-Diffuse Visible Solar Transmittance

Type: real number
Used only when Optical Data Type = SpectralAverage This input field is not used currently.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: autocalculate

Front Side Diffuse-Diffuse Visible Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage This input field is not used currently.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: autocalculate

Back Side Diffuse-Diffuse Visible Solar Reflectance

Type: real number
Used only when Optical Data Type = SpectralAverage This input field is not used currently.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: autocalculate

Infrared Transmittance (applies to front and back)

Type: real number
The long-wave hemispherical transmittance of the glazing. Assumed to be the same for both sides of the glazing.
Unit: dimensionless
Minimum: 0.0
Maximum: 1.0
Default: 0.0

Front Side Infrared Emissivity

Type: real number
The front side long-wave hemispherical emissivity of the glazing.
Unit: dimensionless
Default: 0.84

Back Side Infrared Emissivity

Type: real number
The back side long-wave hemispherical emissivity of the glazing.
Unit: dimensionless
Default: 0.84

Thermal Resistance

Type: real number
This is the R-Value in SI for the glass. The default value is an approximation for a single layer of glass at 1/4" inch thickness. This field is used only for movable insulation defined with this material type.
Unit: m2-K/W
Default: 0.158