modelZoneLwDistribution
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This model is a verification test for model IDEAS.Buildings.Components.BaseClasses.RadiativeHeatTransfer.ZoneLwDistribution.
Three different approaches are used to model
a black cube with face surface areas of 4 m2.
The emissivity of each surface is one.
The first surface has a time-varying temperature,
whereas the five others have a fixed temperature.
In intHeaRad the five other surfaces are lumped into one surface.
In zonLwDist
an equivalent radiant star point is used.
In zonLwVieFac
view factors are computed.
All three approaches should give exactly the same result for the given
geometry and emissivities.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Length | l | 2 | |
| Modelica.Units.SI.Length | b | 2 | |
| Modelica.Units.SI.Length | h | 2 |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| IDEAS.Buildings.Components.BaseClasses.RadiativeHeatTransfer.ZoneLwDistribution | zonLwDist | Longwave distribution model using radiant star node | |
| Modelica.Blocks.Sources.Ramp | ramp | Input signal | |
| Modelica.Thermal.HeatTransfer.Sources.PrescribedTemperature | preTem | Prescribed temperature block | |
| Modelica.Thermal.HeatTransfer.Sources.FixedTemperature | fixTem | Fixed temperature boundary condition corresponding to zone temperature | |
| Modelica.Blocks.Sources.Constant | epsLw | Longwave emissivity | |
| Modelica.Blocks.Sources.Constant[6] | A | Heat exchange surface area | |
| HeatRadiation | intHeaRad | Interior longwave heat radiation model | |
| ZoneLwDistributionViewFactor | zonLwVieFac | Longwave distribution model using view factors | |
| Modelica.Blocks.Sources.Constant[6] | inc | Inclinations | |
| Modelica.Blocks.Sources.Constant[6] | azi | Azimuth angles |
Revisions
-
January 20, 2017 by Filip Jorissen:
Changed implementation to support more generic dimensions. -
January 19, 2017 by Filip Jorissen:
First implementation