modelPump_Mdot
Pump model - Prescribed mass flow rate
Extends from Greenhouses.Icons.Water.Pump.
Information
The Pump model represents the compression of a fluid in a turbo or volumetric machine. It is a constant efficiency model where pump speed is set as an input.
This model is an adapted version of the model Pump_Mdot from ThermoCycle Library. In order to make it compatible with the Greenhouses library, the fluid ports have been replaced by the Modelica Standard Library fluidPort.
The assumptions for this model are:
- No dynamics ( it is considered negligible when compared to the one characterizing the heat exchanger).
- No thermal energy losses to the environment
- Isentropic efficiency based on empirical performance curve
- Mass flow rate based on empirical performance curve
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.MassFlowRate | Mdot_0 | 1 | Mass flow if external signal not connected |
| Real | eta_is | 1 | Overall Isentropic efficiency of the pump |
| Boolean | NeglectDELTAh | true | if true, neglects the enthalpy difference due to the compression |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Interfaces.FluidPort_a | inlet | ||
| Modelica.Fluid.Interfaces.FluidPort_b | outlet | ||
| Modelica.Blocks.Interfaces.RealInput | flow_in |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.MassFlowRate | Mdot | Mass flow rate | |
| Modelica.Units.SI.SpecificEnthalpy | h | Fluid specific enthalpy | |
| Modelica.Units.SI.Pressure | p | Inlet pressure | |
| Modelica.Units.SI.Density | rho | Liquid density | |
| Modelica.Units.SI.Power | Wdot | Power Consumption |
Contents
| Name | Description |
|---|---|
 Medium |