Gas
Gas materials specify the properties of the gas that will be placed between detailed glass panes. Argon, Krypton and Xenon are available as options. There is also a “custom” option that allows you to specify the gas properties.
Gas properties
Gas type
This is the type of gas. The choices are Air, Argon, Krypton, or Xenon. If Gas Type = Custom, you can use the fields below for coefficients A and B to specify the properties of a different type of gas. In the following expression, the A and B coefficients give a property value as a function of temperature in degrees K:
Property = Coefficient A + Coefficient B ∗ Temperature K
Thickness
This is the thickness of the gas layer.
|
Default value:
|
6 mm; 0.25 in
|
|
Min & Max:
|
0 < x < = 100,000
|
|
Typical Range:
|
3 to 30 mm; 0.01 to 1.5 in
|
|
Units:
|
mm or in
|
Conductivity coefficient A
The conductivity for coefficient A.
|
Default value:
|
blank
|
|
Min & Max:
|
0 < x <= 100,000
|
|
Typical Range:
|
N/A
|
|
Units:
|
W/mK; W/m°C; Btu/hr•ft•°F
|
Conductivity coefficient B
The conductivity for coefficient B given in W/mK2; W/m°C2; Btu/hr•ft•°F2.
|
Default value:
|
blank
|
|
Min & Max:
|
0 < x <= 100,000
|
|
Typical Range:
|
N/A
|
|
Units:
|
W/mK2; W/m°C2; Btu/hr°F2
|
Viscosity coefficient A
The viscosity for coefficients A.
|
Default value:
|
blank
|
|
Min & Max:
|
0 < x <= 100,000
|
|
Typical Range:
|
N/A
|
|
Units:
|
kg/m•s; lb/ft•s
|
Viscosity coefficient B
The viscosity for coefficient B
|
Default value:
|
blank
|
|
Min & Max:
|
0 < x <= 100,000
|
|
Typical Range:
|
N/A
|
|
Units:
|
kg/m•s•K; lb/ft•s•°F
|
Specific heat coefficient A
The specific heat for coefficient A.
|
Default value:
|
blank
|
|
Min & Max:
|
0 < x <= 100,000
|
|
Typical Range:
|
N/A
|
|
Units:
|
J/Kg•K; J/Kg•°C; Btu/lb•°F
|
Specific heat coefficient B
The specific heat for coefficient B.
|
Default value:
|
blank
|
|
Min & Max:
|
0 < x <= 100,000
|
|
Typical Range:
|
N/A
|
|
Units:
|
J/Kg•K2; J/Kg•°C2; Btu/lb•°F2
|
Molecular weight
The molecular weight is the mass of 1 mol of the gas substance. This has a numerical value which is the average molecular mass of the molecules in the substance multiplied by Avogadro’s constant.
|
Default value:
|
blank
|
|
Min & Max:
|
20 <= x <= 200
|
|
Typical Range:
|
N/A
|
|
Units:
|
g/mol; lb/mol
|