Description: "Package with thermophysical properties for window glas"

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## Buildings.HeatTransfer.Data.Glasses

Package with thermophysical properties for window glas

### Information

This package implements thermophysical properties for window glas.

Since the infrared transmissivity is part of the Window 5 data and since it depends on the glass thickness, the glass thickness is a parameter that is set for all glass layers. This configuration is different from the records fo gas properties, which do not yet set the value for the thickness of the gas gap.

Extends from Modelica.Icons.MaterialPropertiesPackage (Icon for package containing property classes).

### Package Content

Name | Description
--- | ---
Generic | Thermal properties of window glass
ID100 | Generic Bronze Glass 3.1mm. Manufacturer: Generic.
ID101 | Generic Bronze Glass 5.7mm. Manufacturer: Generic.
ID102 | Generic Clear Glass 3.048mm. Manufacturer: Generic.
ID103 | Generic Clear Glass 5.7mm. Manufacturer: Generic.

## Buildings.HeatTransfer.Data.Glasses.Generic

Thermal properties of window glass

### Information

This record implements thermophysical properties for window glas.

The table below compares the data of this record with the variables used in the WINDOW 6 output file.

Note that

- the surface `a` is usually the outside-facing surface, and the surface `b` is usually the room-facing surface.
- by the term solar, we mean the whole solar spectrum. Data in the solar spectrum are used for computing solar heat gains.
- by the term infrared (or infrared), we mean the infrared spectrum. Data in the infrared spectrum are used for thermal radiation that is emitted by surfaces that are around room or ambient temperature.
- WINDOW 6 uses spectral data in the calculation of optical properties of window systems, whereas the model in this library uses averages over the whole solar or infrared spectrum.

Buildings library variable name | WINDOW 6 variable name
--- | ---
tauSol | Tsol
rhoSol_a | Rsol1
rhoSol_b | Rsol2
tauIR | Tir
absIR_a | Emis1
absIR_b | Emis2

Extends from Modelica.Icons.Record (Icon for records).

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Length | x | 0.003 | Thickness [m]
ThermalConductivity | k | 1 | Thermal conductivity [W/(m.K)]
TransmissionCoefficient | tauSol | 0.6 | Solar transmittance [1]
ReflectionCoefficient | rhoSol_a | 0.075 | Solar reflectance of surface a (usually outside-facing surface) [1]
ReflectionCoefficient | rhoSol_b | 0.075 | Solar reflectance of surface b (usually room-facing surface) [1]
TransmissionCoefficient | tauIR | 0 | Infrared transmissivity of glass [1]
Emissivity | absIR_a | 0.84 | Infrared absorptivity of surface a (usually outside-facing surface) [1]
Emissivity | absIR_b | 0.84 | Infrared absorptivity of surface b (usually room-facing surface) [1]

### Modelica definition

record Generic "Thermal properties of window glass" extends Modelica.Icons.Record; parameter Modelica.SIunits.Length x=0.003 "Thickness"; parameter Modelica.SIunits.ThermalConductivity k=1 "Thermal conductivity"; parameter Modelica.SIunits.TransmissionCoefficient tauSol = 0.6 "Solar transmittance"; parameter Modelica.SIunits.ReflectionCoefficient rhoSol_a = 0.075 "Solar reflectance of surface a (usually outside-facing surface)"; parameter Modelica.SIunits.ReflectionCoefficient rhoSol_b = 0.075 "Solar reflectance of surface b (usually room-facing surface)"; parameter Modelica.SIunits.TransmissionCoefficient tauIR = 0 "Infrared transmissivity of glass"; parameter Modelica.SIunits.Emissivity absIR_a = 0.84 "Infrared absorptivity of surface a (usually outside-facing surface)"; parameter Modelica.SIunits.Emissivity absIR_b = 0.84 "Infrared absorptivity of surface b (usually room-facing surface)"; end Generic;

## Buildings.HeatTransfer.Data.Glasses.ID100

Generic Bronze Glass 3.1mm. Manufacturer: Generic.

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Length | x | 0.0031 | Thickness [m]
ThermalConductivity | k | 1.0 | Thermal conductivity [W/(m.K)]
TransmissionCoefficient | tauSol | 0.646 | Solar transmittance [1]
ReflectionCoefficient | rhoSol_a | 0.062 | Solar reflectance of surface a (usually outside-facing surface) [1]
ReflectionCoefficient | rhoSol_b | 0.063 | Solar reflectance of surface b (usually room-facing surface) [1]
TransmissionCoefficient | tauIR | 0 | Infrared transmissivity of glass [1]
Emissivity | absIR_a | 0.84 | Infrared absorptivity of surface a (usually outside-facing surface) [1]
Emissivity | absIR_b | 0.84 | Infrared absorptivity of surface b (usually room-facing surface) [1]

### Modelica definition

record ID100 = Buildings.HeatTransfer.Data.Glasses.Generic ( x=0.0031, k=1.0, tauSol=0.646, rhoSol_a=0.062, rhoSol_b=0.063, tauIR=0, absIR_a=0.84, absIR_b=0.84) "Generic Bronze Glass 3.1mm. Manufacturer: Generic.";

## Buildings.HeatTransfer.Data.Glasses.ID101

Generic Bronze Glass 5.7mm. Manufacturer: Generic.

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Length | x | 0.0057 | Thickness [m]
ThermalConductivity | k | 1.0 | Thermal conductivity [W/(m.K)]
TransmissionCoefficient | tauSol | 0.486 | Solar transmittance [1]
ReflectionCoefficient | rhoSol_a | 0.053 | Solar reflectance of surface a (usually outside-facing surface) [1]
ReflectionCoefficient | rhoSol_b | 0.053 | Solar reflectance of surface b (usually room-facing surface) [1]
TransmissionCoefficient | tauIR | 0 | Infrared transmissivity of glass [1]
Emissivity | absIR_a | 0.84 | Infrared absorptivity of surface a (usually outside-facing surface) [1]
Emissivity | absIR_b | 0.84 | Infrared absorptivity of surface b (usually room-facing surface) [1]

### Modelica definition

record ID101 = Buildings.HeatTransfer.Data.Glasses.Generic ( x=0.0057, k=1.0, tauSol=0.486, rhoSol_a=0.053, rhoSol_b=0.053, tauIR=0, absIR_a=0.84, absIR_b=0.84) "Generic Bronze Glass 5.7mm. Manufacturer: Generic.";

## Buildings.HeatTransfer.Data.Glasses.ID102

Generic Clear Glass 3.048mm. Manufacturer: Generic.

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Length | x | 0.003 | Thickness [m]
ThermalConductivity | k | 1.0 | Thermal conductivity [W/(m.K)]
TransmissionCoefficient | tauSol | 0.834 | Solar transmittance [1]
ReflectionCoefficient | rhoSol_a | 0.075 | Solar reflectance of surface a (usually outside-facing surface) [1]
ReflectionCoefficient | rhoSol_b | 0.075 | Solar reflectance of surface b (usually room-facing surface) [1]
TransmissionCoefficient | tauIR | 0 | Infrared transmissivity of glass [1]
Emissivity | absIR_a | 0.84 | Infrared absorptivity of surface a (usually outside-facing surface) [1]
Emissivity | absIR_b | 0.84 | Infrared absorptivity of surface b (usually room-facing surface) [1]

### Modelica definition

record ID102 = Buildings.HeatTransfer.Data.Glasses.Generic ( x=0.003, k=1.0, tauSol=0.834, rhoSol_a=0.075, rhoSol_b=0.075, tauIR=0, absIR_a=0.84, absIR_b=0.84) "Generic Clear Glass 3.048mm. Manufacturer: Generic.";

## Buildings.HeatTransfer.Data.Glasses.ID103

Generic Clear Glass 5.7mm. Manufacturer: Generic.

### Parameters

Type | Name | Default | Description
--- | --- | --- | ---
Length | x | 0.0057 | Thickness [m]
ThermalConductivity | k | 1.0 | Thermal conductivity [W/(m.K)]
TransmissionCoefficient | tauSol | 0.771 | Solar transmittance [1]
ReflectionCoefficient | rhoSol_a | 0.070 | Solar reflectance of surface a (usually outside-facing surface) [1]
ReflectionCoefficient | rhoSol_b | 0.070 | Solar reflectance of surface b (usually room-facing surface) [1]
TransmissionCoefficient | tauIR | 0 | Infrared transmissivity of glass [1]
Emissivity | absIR_a | 0.84 | Infrared absorptivity of surface a (usually outside-facing surface) [1]
Emissivity | absIR_b | 0.84 | Infrared absorptivity of surface b (usually room-facing surface) [1]

### Modelica definition

record ID103 = Buildings.HeatTransfer.Data.Glasses.Generic ( x=0.0057, k=1.0, tauSol=0.771, rhoSol_a=0.070, rhoSol_b=0.070, tauIR=0, absIR_a=0.84, absIR_b=0.84) "Generic Clear Glass 5.7mm. Manufacturer: Generic.";