modelPartialComponent
BaseClass for components in air handling units with one air flow
Information
This partial model provides a idealized heat exchanger. The model considers the convective heat transfer from the heat transfer surface in the air stream. Moreover the heat capacity of the heating surface and the housing of the heat exchanger is considered.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Advanced | |||
| Modelica.Units.SI.SpecificHeatCapacity | cpAir | 1006 | specific heat capacity of dry air |
| Modelica.Units.SI.SpecificHeatCapacity | cpSteam | 1860 | specific heat capacity of steam |
| Modelica.Units.SI.Density | rhoAir | 1.2 | Density of air |
| Nominal conditions | |||
| Modelica.Units.SI.MassFlowRate | m_flow_nominal | nominal mass flow rate | |
| Modelica.Units.SI.PressureDifference | dp_nominal | pressure drop at nominal mass flow rate | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | mAirIn_flow | mass flow rate of incoming air | |
| Modelica.Blocks.Interfaces.RealInput | TAirIn | Temperature of incoming air | |
| Modelica.Blocks.Interfaces.RealInput | XAirIn | absolute humidity of incoming air | |
| Modelica.Blocks.Interfaces.RealOutput | mAirOut_flow | mass flow rate of outgoing air | |
| Modelica.Blocks.Interfaces.RealOutput | TAirOut | temperature of outgoing air | |
| Modelica.Blocks.Interfaces.RealOutput | XAirOut | absolute humidity of outgoing air | |
| Modelica.Blocks.Interfaces.RealOutput | dp | pressure difference |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.SpecificEnthalpy | hAirIn | specific enthalpy of incoming air | |
| Modelica.Units.SI.SpecificEnthalpy | hAirOut | specific enthalpy of outgoing air |
Revisions
- April, 2019, by Martin Kremer:
First implementation. - August, 2019, by Martin Kremer:
Added possibility to use set temperature. - December, 2019, by Martin Kremer:
Removed internal PID. Output temperature is now directly set to set temperature.