modelInfraredRadiationGainDistribution
Infrared radiative heat gain distribution between the room facing surfaces
Extends from Buildings.ThermalZones.Detailed.BaseClasses.PartialSurfaceInterfaceRadiative.
Information
This model computes the distribution of the infrared radiant heat gain to the room surfaces. The infrared radiant heat gain Q is an input to this model. It is distributed to the individual surfaces according toQi = Q Ai εi ⁄ ∑k Ak εk.
For opaque surfaces, the heat flow rate Qi is set to be equal to the heat flow rate at the heat port. For the glass of the windows, the heat flow rate Qi is set to the radiosity Ji that will strike the glass or the window shade.Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | haveShade | Set to true if a shade is present |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput[NConExtWin] | uSha | Control signal for the shading device (removed if no shade is present) | |
| Modelica.Blocks.Interfaces.RealInput | Q_flow | Radiative heat input into room (positive if heat gain) | |
| Buildings.HeatTransfer.Interfaces.RadiosityOutflow | JOutConExtWin | Outgoing radiosity that connects to shaded and unshaded part of glass |
Revisions
-
May 21, 2015, by Michael Wetter:
Reformulated to reduce use of the division macro in Dymola. This is for issue 417. -
July 16, 2013, by Michael Wetter:
Added assignment of heat port temperature instead of heat flow rate for the cases where a construction has been conditionally removed. This is required to avoid a singularity. -
June 27, 2013, by Michael Wetter:
Changed model because the outflowing radiosity has been changed to be a non-negative quantity. See track issue #158. -
December 1, 2010, by Michael Wetter:
First implementation.