modelRen2014ACBedroom
A model to predict occupants' AC behavior in bedroom with indoor temperature
Extends from Modelica.Blocks.Icons.DiscreteBlock (Graphical layout of discrete block component icon).
Information
Model predicting the state of the AC with the indoor temperature and occupancy.
Dynamics
When the space is unoccupied, the AC is always off. When the space is occupied, the lower the indoor temperature is, the lower the chance to turn on the AC and higher the chance to turn off the AC.
References
The model is documented in the paper "Ren, X., Yan, D. and Wang, C., 2014. Air-conditioning usage conditional probability model for residential buildings. Building and Environment, 81, pp.172-182."
The model parameters are regressed from the field study in China in 2014.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Temperature | u1 | 304.40 | Threshold for turning off the AC of the Weibull Distribution |
| Modelica.Units.SI.Temperature | u2 | 301.90 | Threshold for turning on the AC of the Weibull Distribution |
| Modelica.Units.SI.TemperatureDifference | L1 | 13.34 | Normalization factor for turning off the AC of the Weibull Distribution |
| Modelica.Units.SI.TemperatureDifference | L2 | 42.86 | Normalization factor for turning on the AC of the Weibull Distribution |
| Real | k1 | 1.73 | Shape factor for turning off the AC of the Weibull Distribution |
| Real | k2 | 1.80 | Shape factor for turning on the AC of the Weibull Distribution |
| Modelica.Units.SI.Time | samplePeriod | 120 | Sample period |
| Integer | localSeed | 4000 | 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 |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | TIn | Indoor air temperature | |
| Modelica.Blocks.Interfaces.BooleanInput | occ | Indoor occupancy, true for occupied | |
| Modelica.Blocks.Interfaces.BooleanOutput | on | State of AC |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | pOn | Probability of turning on the AC | |
| Real | pOff | Probability of turning off the AC |
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.