modelReverseBuoyancy
Model with four rooms and buoyancy-driven air circulation that reverses direction
Extends from Modelica.Icons.Example.
Information
This model is similar than BuildingSystems.Airflow.Multizone.Validation.ThreeRoomsContam but it has four instead of three rooms. The outdoor conditions are held constant at 10°C and atmospheric pressure. All four rooms are at different temperatures, with the rooms on the bottom floor being initially at a higher temperature than the rooms on the top floor. As time progresses, the temperatures of the two rooms on the respective floors asymptotically approach each other. The bottom floor eventually cools below the temperature of the top floor, because the bottom floor directly exchanges air with the outside.
Components
| Type | Name | Default | Description |
|---|---|---|---|
| BuildingSystems.Fluid.MixingVolumes.MixingVolume | volBotEas | Volume of bottom floor, east room | |
| BuildingSystems.Airflow.Multizone.Orifice | oriOutBot | Orifice at bottom | |
| BuildingSystems.Airflow.Multizone.MediumColumn | colOutTop | Medium column to compute static pressure of air | |
| BuildingSystems.Airflow.Multizone.Orifice | oriOutTop | Orifice at top | |
| BuildingSystems.Airflow.Multizone.MediumColumn | colEasInTop | Medium column to compute static pressure of air | |
| BuildingSystems.Airflow.Multizone.MediumColumn | colEasInBot | Medium column to compute static pressure of air | |
| BuildingSystems.Airflow.Multizone.MediumColumn | colOutBot | Medium column to compute static pressure of air | |
| MediumColumn | colWesBot | Medium column to compute static pressure of air | |
| BuildingSystems.Airflow.Multizone.Orifice | oriWesTop | Orifice between west rooms | |
| BuildingSystems.Airflow.Multizone.MediumColumn | colWesTop | Medium column to compute static pressure of air | |
| BuildingSystems.Airflow.Multizone.DoorDiscretizedOperable | dooOpeClo | Discretized door | |
| Fluid.Delays.DelayFirstOrder | volBotWes | Volume of bottom floor, west room | |
| Modelica.Blocks.Sources.Constant | ope | Constant signal for door opening | |
| BuildingSystems.Airflow.Multizone.MediumColumn | col1EasBot | Medium column to compute static pressure of air | |
| BuildingSystems.Airflow.Multizone.Orifice | oriEasTop | Orifice between east rooms | |
| BuildingSystems.Airflow.Multizone.MediumColumn | colEasTop | Medium column to compute static pressure of air | |
| BuildingSystems.Fluid.MixingVolumes.MixingVolume | volTopEas | Volume of top floor, east room | |
| BuildingSystems.Fluid.MixingVolumes.MixingVolume | volTopWes | Volume of top floor, west room | |
| BuildingSystems.Airflow.Multizone.DoorDiscretizedOperable | dooOpeCloTop | Discretized door | |
| BuildingSystems.Fluid.Sources.Boundary_pT | volOut | Ambient conditions |
Contents
| Name | Description |
|---|---|
| Medium |
Revisions
-
March 26, 2021 by Michael Wetter:
Updated comments for IBPSA, #515. -
May 15, 2019, by Jianjun Hu:
Replaced fluid source. This is for #1072. -
December 22, 2014 by Michael Wetter:
RemovedModelica.Fluid.Systemto address issue #311. -
November 10, 2011, by Michael Wetter:
Added documentation.