modelSingleZoneFloorHeater
A model with an ideal heater, a fan, a PI controller and an integrator
Extends from Buildings.Fluid.Interfaces.PartialTwoPortInterface (Partial model with two ports and declaration of quantities that are used by many models).
Information
This model includes an ideal heater, a fan, a PI controller and an integrator for the heating energy. It is used in the validation model Buildings.ThermalZones.Detailed.Validation.SingleZoneFloorWithHeating.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Volume | VRoo | Room air volume | |
| Assumptions | |||
| Boolean | allowFlowReversal (from PartialTwoPort) | true | = false to simplify equations, assuming, but not enforcing, no flow reversal |
| Nominal condition | |||
| Modelica.Units.SI.MassFlowRate | m_flow_nominal (from PartialTwoPortInterface) | Nominal mass flow rate | |
| Advanced | |||
| Modelica.Units.SI.MassFlowRate | m_flow_small (from PartialTwoPortInterface) | 1E-4*abs(m_flow_nominal) | Small mass flow rate for regularization of zero flow |
| Advanced › Diagnostics | |||
| Boolean | show_T (from PartialTwoPortInterface) | false | = true, if actual temperature at port is computed |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Interfaces.FluidPort_a | port_a (from PartialTwoPort) | Fluid connector a (positive design flow direction is from port_a to port_b) | |
| Modelica.Fluid.Interfaces.FluidPort_b | port_b (from PartialTwoPort) | Fluid connector b (positive design flow direction is from port_a to port_b) | |
| Buildings.Controls.OBC.CDL.Interfaces.RealInput | TSetRoo | Room setpoint temperature | |
| Buildings.Controls.OBC.CDL.Interfaces.RealOutput | yEHea | Heating energy | |
| Buildings.Controls.OBC.CDL.Interfaces.RealInput | TRooMea | Measured room temperature |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.MassFlowRate | m_flow (from PartialTwoPortInterface) | port_a.m_flow | Mass flow rate from port_a to port_b (m_flow > 0 is design flow direction) |
| Modelica.Units.SI.PressureDifference | dp (from PartialTwoPortInterface) | port_a.p - port_b.p | Pressure difference between port_a and port_b |
| Medium.ThermodynamicState | sta_a (from PartialTwoPortInterface) | if allowFlowReversal then Medium.setState_phX(port_a.p, noEvent(actualStream(port_a.h_outflow)), noEvent(actualStream(port_a.Xi_outflow))) else Medium.setState_phX(port_a.p, noEvent(inStream(port_a.h_outflow)), noEvent(inStream(port_a.Xi_outflow))) | Medium properties in port_a |
| Medium.ThermodynamicState | sta_b (from PartialTwoPortInterface) | if allowFlowReversal then Medium.setState_phX(port_b.p, noEvent(actualStream(port_b.h_outflow)), noEvent(actualStream(port_b.Xi_outflow))) else Medium.setState_phX(port_b.p, noEvent(port_b.h_outflow), noEvent(port_b.Xi_outflow)) | Medium properties in port_b |
| Buildings.Controls.OBC.CDL.Reals.PID | conPID | Controller for heater | |
| Buildings.Controls.OBC.CDL.Reals.MultiplyByParameter | gai | Gain factor | |
| Buildings.Controls.OBC.CDL.Reals.AddParameter | addPar | Compute the leaving water setpoint temperature | |
| Fluid.HeatExchangers.Heater_T | hea | Ideal heater | |
| Fluid.Movers.FlowControlled_m_flow | fan | Fan | |
| Modelica.Blocks.Continuous.Integrator | EHea | Heating energy |
Contents
| Name | Description |
|---|---|
 Medium | Medium model for air |
Revisions
- March 28, 2020, by Kun Zhang:
First implementation.