modelIllumination
Determining the activation and deactivation times of the illumination
Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).
Information
This model calculates the activation and deactivation times of the illumination and gives it back as the Boolean "Illumination". It is based on VDI 6007 part 3.The total solar energy entering the room, which can be calculated by Window or ShadedWindow, is compared to a limit value based on the parameters.
References
VDI. German Association of Engineers Guideline VDI 6007-3 June 2015. Calculation of transient thermal response of rooms and buildings - Modelling of solar radiation.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | D | Daylight quotient | |
| Modelica.Units.SI.LuminousEfficacy | k_mDifCov | 115 | Radiation equivalent for uniformly overcast skies |
| Modelica.Units.SI.ReflectionCoefficient | rho | 0.2 | Degree of ground reflection |
| window | |||
| Integer | n | 1 | Number of windows |
| Modelica.Units.SI.Angle[n] | til | Surface tilt. til=90 degree for walls; til=0 for ceilings; til=180 for roof | |
| Real[n] | r | Frame share | |
| Modelica.Units.SI.Area[n] | A | Window area | |
| Modelica.Units.SI.TransmissionCoefficient[n] | tau_vis | Degree of light transmission | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.BooleanOutput | Illumination | If Illumination=true: activation of Illumination | |
| Modelica.Blocks.Interfaces.RealInput[n] | HVis | Solar energy entering the room in the visible area | |
| Modelica.Blocks.Interfaces.RealInput[n] | corTaue_DifCov | Correction value for translucence for diffuse irradiation during covered sky | |
| Modelica.Blocks.Interfaces.RealInput[n] | corTaue_Gro | Correction value for translucence for ground reflection radiation | |
| Modelica.Blocks.Interfaces.RealInput | e_ILim | Internal illumance in reference point |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real[n] | r_DifCov | Conversion factor | |
| Modelica.Units.SI.EnergyFlowRate[n] | HLimVisi | Thresholds within the room | |
| Modelica.Units.SI.EnergyFlowRate | HLimVis | Sum of H_LimInsi | |
| Modelica.Units.SI.EnergyFlowRate[n] | HVisi | Solar energy entering the room in the visible area | |
| Modelica.Units.SI.EnergyFlowRate | HVisSum | Sum of HVisi |
Revisions
- May 23, 2016, by Stanley Risch:
Implemented.