modelVolumeFlow
Enforces constant volume flow
Extends from FluidHeatFlow.BaseClasses.TwoPort (Partial model of two port).
Information
Fan resp. pump with constant volume flow rate. Pressure increase is the response of the whole system.
Coolant's temperature and enthalpy flow are not affected.
Setting parameter m (mass of medium within fan/pump) to zero leads to neglect of temperature transient cv*m*der(T).
Thermodynamic equations are defined by BaseClasses.TwoPort.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| FluidHeatFlow.Media.Medium | medium (from TwoPort) | FluidHeatFlow.Media.Medium() | Medium in the component |
| SI.Mass | m (from TwoPort) | Mass of medium | |
| SI.Temperature | T0 (from TwoPort) | Initial temperature of medium | |
| Boolean | T0fixed (from TwoPort) | false | Initial temperature guess value or fixed |
| Real | tapT (from TwoPort) | 1 | Defines temperature of heatPort between inlet and outlet temperature |
| Boolean | useVolumeFlowInput | false | Enable / disable volume flow input |
| SI.VolumeFlowRate | constantVolumeFlow | Volume flow rate |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| FluidHeatFlow.Interfaces.FlowPort_a | flowPort_a (from TwoPort) | ||
| FluidHeatFlow.Interfaces.FlowPort_b | flowPort_b (from TwoPort) | ||
| Modelica.Blocks.Interfaces.RealInput | volumeFlow | internalVolumeFlow |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Pressure | dp (from TwoPort) | Pressure drop a->b | |
| SI.VolumeFlowRate | V_flow (from TwoPort) | Volume flow a->b | |
| SI.HeatFlowRate | Q_flow (from TwoPort) | Heat exchange with ambient | |
| SI.Temperature | T (from TwoPort) | Outlet temperature of medium | |
| SI.Temperature | T_a (from TwoPort) | Temperature at flowPort_a | |
| SI.Temperature | T_b (from TwoPort) | Temperature at flowPort_b | |
| SI.TemperatureDifference | dT (from TwoPort) | Temperature increase of coolant in flow direction | |
| SI.Temperature | T_q (from TwoPort) | Temperature relevant for heat exchange with ambient |