modelPartialPumpSingle
Interface class for single pump
Extends from Buildings.Templates.Components.Interfaces.PartialPump (Base class for all pump models), Buildings.Fluid.Interfaces.PartialTwoPortInterface (Partial model with two ports and declaration of quantities that are used by many models).
Information
This partial class provides a standard interface for single pump models.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Boolean | addPowerToMedium (from PartialPump) | false | Set to false to avoid any power (=heat and flow work) being added to medium (may give simpler equations) |
| Buildings.Templates.Components.Data.PumpSingle | dat | Design and operating parameters | |
| Configuration | |||
| Buildings.Templates.Components.Types.Pump | typ (from PartialPump) | Equipment type | |
| Boolean | have_var (from PartialPump) | true | Set to true for variable speed pump, false for constant speed pump |
| Boolean | have_varCom (from PartialPump) | true | Set to true for single common speed signal, false for dedicated signals |
| Boolean | have_valChe (from PartialPump) | true | Set to true to include a check valve in pump line |
| Dynamics › Nominal condition | |||
| Modelica.Units.SI.Time | tau (from PartialPump) | 1 | Time constant of fluid volume for nominal flow, used if energy or mass balance is dynamic |
| Dynamics › Conservation equations | |||
| Modelica.Fluid.Types.Dynamics | energyDynamics (from PartialPump) | Modelica.Fluid.Types.Dynamics.DynamicFreeInitial | Type of energy balance: dynamic (3 initialization options) or steady state |
| Assumptions | |||
| Boolean | allowFlowReversal (from PartialPump) | true | = false to simplify equations, assuming, but not enforcing, no flow reversal |
| Graphics | |||
| Integer | text_rotation (from PartialPump) | 0 | Text rotation angle in icon layer |
| Boolean | text_flip (from PartialPump) | false | True to flip text horizontally in icon layer |
| Nominal condition | |||
| Modelica.Units.SI.MassFlowRate | m_flow_nominal (from PartialTwoPortInterface) | Nominal mass flow rate | |
| Modelica.Units.SI.PressureDifference | dp_nominal | dat.dp_nominal | Pump head at design conditions |
| Modelica.Units.SI.PressureDifference | dpValChe_nominal | Buildings.Templates.Data.Defaults.dpValChe | Check valve pressure drop at design conditions |
| 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 |
|---|---|---|---|
| Buildings.Templates.Components.Interfaces.Bus | bus (from PartialPump) | Control bus | |
| 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) |
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 |
Revisions
-
April 28, 2023, by Antoine Gautier:
First implementation.