functionalphaGap
Empirical equation for convective heat transfer coefficient for a parallel gap
Information
This function computes the convective heat transfer coefficient for a gap between two parallel surfaces with the gap distanced, the gap height h,
the surface temperatures T1 and T2 and the gases air, argon, krypton, xenon and SF6.
References
Empirical alpha equation by Mac Gregor/Emery (7th edition of VDI-Waermeatlas Fc3 formula 15)
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Temperature | T1 | Surface temperature 1 | |
| Modelica.Units.SI.Temperature | T2 | Surface temperature 2 | |
| Modelica.Units.SI.Length | d | Gap distance | |
| Modelica.Units.SI.Length | h | Gap height | |
| Integer | gas | Gas within the gap: 1:air, 2:argon or 3:krypton, 4:xenon, 5:SF6 |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.CoefficientOfHeatTransfer | value |
Revisions
-
Jan 16, 2014 by Christoph Nytsch-Geusen:
First implementation.