IdealPump

Model of an ideal pump

Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Simple fan resp. pump where characteristic is dependent on shaft's speed,
torque * speed = pressure increase * volume flow (without losses)
Pressure increase versus volume flow is defined by a linear function, from dp0(V_flow=0) to V_flow0(dp=0).
The axis intersections vary with speed as follows:

dp prop. speed^2
V_flow prop. speed

Coolant's temperature and enthalpy flow are not affected.
Setting parameter m (mass of medium within fan/pump) to zero leads to neglection of temperature transient cv*m*der(T).
Thermodynamic equations are defined by Partials.TwoPort.

Parameters (8)

medium	Value: Modelica.Thermal.FluidHeatFlow.Media.Medium() Type: Medium Description: Medium in the component
m	Value: Type: Mass (kg) Description: Mass of medium
T0	Value: Type: Temperature (K) Description: Initial temperature of medium
T0fixed	Value: false Type: Boolean Description: Initial temperature guess value or fixed
tapT	Value: 1 Type: Real Description: Defines temperature of heatPort between inlet and outlet temperature
wNominal	Value: Type: AngularVelocity (rad/s) Description: Nominal speed
dp0	Value: Type: Pressure (Pa) Description: Max. pressure increase @ V_flow=0
V_flow0	Value: Type: VolumeFlowRate (m³/s) Description: Max. volume flow rate @ dp=0

Outputs (4)

T	Type: Temperature (K) Description: Outlet temperature of medium
T_a	Type: Temperature (K) Description: Temperature at flowPort_a
T_b	Type: Temperature (K) Description: Temperature at flowPort_b
dT	Type: TemperatureDifference (K) Description: Temperature increase of coolant in flow direction