modelHeater
Base class for example model for the heater and cooler
Information
This partial model is used to construct the models Buildings.Fluid.HeatExchangers.Examples.AirHeater_T and Buildings.Fluid.HeatExchangers.Examples.AirHeater_u and the similar models Buildings.Fluid.HeatExchangers.Examples.WaterHeater_T and Buildings.Fluid.HeatExchangers.Examples.WaterHeater_u. It consists of a volume with heat loss to the ambient, a fan, a set point for the temperature of the volume and a PI controller.
The instance bou is required to set a reference pressure
for system models in which the fluid is modelled as an incompressible fluid,
and it also is required to account for a variation of density of the fluid.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Volume | V | 6*6*2.7 | Volume |
| Modelica.Units.SI.MassFlowRate | m_flow_nominal | V*1.2*6/3600 | Nominal mass flow rate |
| Modelica.Units.SI.HeatFlowRate | Q_flow_nominal | 30*6*6 | Nominal heat loss of the room |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.MixingVolumes.MixingVolume | vol | ||
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | theCon | Thermal conductance to the outside | |
| Buildings.HeatTransfer.Sources.PrescribedTemperature | TBou | Fixed temperature boundary condition | |
| Modelica.Thermal.HeatTransfer.Sensors.TemperatureSensor | TVol | Sensor for volume temperature | |
| Buildings.Fluid.Movers.FlowControlled_m_flow | mov | Fan or pump | |
| Modelica.Blocks.Sources.RealExpression | TOut | Outdoor temperature | |
| Modelica.Blocks.Sources.Pulse | TSet | Setpoint for room temperature | |
| Controls.Continuous.LimPID | conPI | Controller | |
| Modelica.Blocks.Sources.Constant | mFan_flow | Mass flow rate of the fan | |
| Buildings.Fluid.Sources.Boundary_pT | bou | Fixed pressure boundary condition, required to set a reference pressure | |
| Sensors.TemperatureTwoPort | THeaOut | Outlet temperature of the heater | |
| FixedResistances.PressureDrop | res | Flow resistance to decouple pressure state from boundary |
Contents
| Name | Description |
|---|---|
 Medium | Medium model |
Revisions
-
May 15, 2019, by Jianjun Hu:
Replaced fluid source. This is for #1072. -
May 8, 2017, by Michael Wetter:
Updated model for new heater model.
This is for Buildings, #763. - February 20, 2016, by Ruben Baetens:
Removal ofdynamicBalanceas parameter formassDynamicsandenergyDynamics. -
January 6, 2015, by Michael Wetter:
Revised implementation. -
November 12, 2014, by Michael Wetter:
First implementation.