modelMediumColumnReversible
Vertical shaft with no friction and no storage of heat and mass, reversible because it can handle negative column heights
Extends from IDEAS.Airflow.Multizone.MediumColumn (Vertical shaft with no friction and no storage of heat and mass).
Information
This model describes the pressure difference of a vertical medium column. It can be used to model the pressure difference caused by stack effect. It is a variation on IDEAS.Airflow.Multizone.MediumColumn.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Length | h (from MediumColumn) | 3 | Height of shaft |
| IDEAS.Airflow.Multizone.Types.densitySelection | densitySelection (from MediumColumn) | Select how to pick density |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Interfaces.FluidPort_a | port_a (from MediumColumn) | Fluid connector a (positive design flow direction is from port_a to port_b) | |
| Modelica.Fluid.Interfaces.FluidPort_b | port_b (from MediumColumn) | Fluid connector b (positive design flow direction is from port_a to port_b) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.VolumeFlowRate | V_flow (from MediumColumn) | Volume flow rate at inflowing port (positive when flow from port_a to port_b) | |
| Modelica.Units.SI.MassFlowRate | m_flow (from MediumColumn) | Mass flow rate from port_a to port_b (m_flow > 0 is design flow direction) | |
| Modelica.Units.SI.PressureDifference | dp (from MediumColumn) | Pressure difference between port_a and port_b | |
| Modelica.Units.SI.Density | rho (from MediumColumn) | Density in medium column |
Revisions
-
January 19, 2022, by Klaas De Jonge:
Adapted IDEAS.Airflow.Multizone.MediumColumn to obtain the current model where input of h can be negative and cleaned out the model as the density should always be set by port_b. This makes port_a not nececarilly always the top port.