modelRijal2007WindowsTInTOutTComf
Extends from Modelica.Blocks.Icons.DiscreteBlock (Graphical layout of discrete block component icon).
Information
Model predicting the state of the window with the indoor, outdoor and comfort temperature and occupancy.
Dynamics
When the space is unoccupied, the window is always closed. When the space is occupied, the window state is determined by the indoor, outdoor and comfort temperature.
When the indoor temperature is within the comfort temperature plus and minus 2 degC, the window state will not be changed.
When the indoor temperature is above the comfort temperature plus 2 degC, if the window is open, it would be kept open; if the window is closed, it might be opened, the probability to open the window is determined by the indoor and outdoor temperature.
When the indoor temperature is below the comfort temperature minus 2 degC, if the window is closed, it would be kept closed; if the window is open, it might be closed, the probability to close the window is determined by the indoor and outdoor temperature.
References
The model is documented in the paper "Rijal, H.B., Tuohy, P., Humphreys, M.A., Nicol, J.F., Samuel, A. and Clarke, J., 2007. Using results from field surveys to predict the effect of open windows on thermal comfort and energy use in buildings. Energy and buildings, 39(7), pp.823-836."
The model parameters are regressed from the field study conducted in 15 office buildings in UK between March 1996 and September 1997. Nine of the buildings were in the Oxford area in the central south of England (seven naturally ventilated (NV) and two air conditioned (AC)). Six of the buildings were in Aberdeen on the north-east coast of Scotland (three NV and three AC).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | AIn | 0.171 | Slope of the indoor temperature in the logistic relation |
| Real | AOut | 0.166 | Slope of the outdoor temperature in the logistic relation |
| Real | B | -6.4 | Intercept of the logistic relation |
| Integer | localSeed | 3007 | 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 |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | TIn | Indoor air temperature | |
| Modelica.Blocks.Interfaces.RealInput | TOut | Outdoor air temperature | |
| Modelica.Blocks.Interfaces.RealInput | TComf | Comfort temperature | |
| Modelica.Blocks.Interfaces.BooleanInput | occ | Indoor occupancy, true for occupied | |
| Modelica.Blocks.Interfaces.BooleanOutput | on | State of window, true for open |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | p | Probability of window opened |
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 25, 2018, by Zhe Wang:
First implementation.