modelInkarojrit2008BlindsSolarIntensity
A model to predict occupants' blinds behavior with solar intensity (and self-reported brightness sensitivity)
Extends from Modelica.Blocks.Icons.DiscreteBlock (Graphical layout of discrete block component icon).
Information
Model predicting the state of the blinds with the solar intensity at the window and occupancy.
Dynamics
When the space is unoccupied, the blinds are always down. When the space is occupied, the lower the solar intensity, the higher the chance that the blind is up.
References
The model is documented in the paper "Inkarojrit, V., 2008. Monitoring and modelling of manually-controlled Venetian blinds in private offices: a pilot study. Journal of Building Performance Simulation, 1(2), pp.75-89."
The model parameters are regressed from the field study in California in 2008 from 113 naturally ventilated buildings.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | A1 | 3.22 | Slope of solar intensity at window |
| Real | A2 | 1.22 | Slope of Occupants' brightness sensitivity |
| Real | B | -8.94 | Intercept |
| Integer | localSeed | 1002 | Local seed to be used to generate the initial state of the random number generator |
| Integer | globalSeed | 30129 | Global seed to be combined with the local seed |
| Modelica.Units.SI.Time | samplePeriod | 120 | Sample period |
| Advanced | |||
| Real | LSen | 4 | Self-reported sensitivity to brightness, seven-point scale, 1 for least sensitive, 7 for most sensitive |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | H | Solar intensity | |
| Modelica.Blocks.Interfaces.BooleanInput | occ | Indoor occupancy, true for occupied | |
| Modelica.Blocks.Interfaces.RealOutput | blindState | State of blinds, 1 being blinds down |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | p | The probability of keeping the blinds on |
Revisions
-
December 6, 2024, by Michael Wetter:
Refactored implementation of random number calculations, transfering the local state of the random number generator from one call to the next.
This is for #4069. -
July 23, 2018, by Zhe Wang:
First implementation. -
August 31, 2018, by Zhe Wang:
First revision.