IdealPump
Model of an ideal pump
Library
Modelica/Thermal/FluidHeatFlow/Sources
Description
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 zeroleads to neglection of temperature transient cv*m*der(T).
Thermodynamic equations are defined by Partials.TwoPort.
Parameters
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo_medium | medium | Medium in the component | FromModelica('Modelica.Thermal.FluidHeatFlow.Media.Medium') | |
mo_m | m | Mass of medium | Scalar | |
mo_T0 | T0 | Initial temperature of medium | Scalar | |
mo_T0fixed | T0fixed | Initial temperature guess value or fixed | Scalar | true |
mo_tapT | tapT | Defines temperature of heatPort between inlet and outlet temperature | Scalar | |
mo_V_flow | V_flow | V_flow | Structure | |
mo_V_flow/fixed | fixed | Cell of scalars | true | |
mo_V_flow/start | start | Cell of scalars | ||
mo_T | T | T | Structure | |
mo_T/fixed | fixed | Cell of scalars | true | |
mo_T/start | start | Cell of scalars | ||
mo_T_a | T_a | T_a | Structure | |
mo_T_a/fixed | fixed | Cell of scalars | true | |
mo_T_a/start | start | Cell of scalars | ||
mo_T_b | T_b | T_b | Structure | |
mo_T_b/fixed | fixed | Cell of scalars | true | |
mo_T_b/start | start | Cell of scalars | ||
mo_T_q | T_q | T_q | Structure | |
mo_T_q/fixed | fixed | Cell of scalars | true | |
mo_T_q/start | start | Cell of scalars | ||
mo_h | h | h | Structure | |
mo_h/fixed | fixed | Cell of scalars | true | |
mo_h/start | start | Cell of scalars | ||
mo_wNominal | wNominal | Nominal speed | Scalar | |
mo_dp0 | dp0 | Max. pressure increase @ V_flow=0 | Scalar | |
mo_V_flow0 | V_flow0 | Max. volume flow rate @ dp=0 | Scalar |
| Name | Label | Description | Data Type | Valid Values |
|---|---|---|---|---|
mo__nmodifiers | Number of Modifiers | Specifies the number of modifiers | Number | |
mo__modifiers | Modifiers | Add new modifier | Structure | |
mo__modifiers/varname | Variable name | Cell of strings | 'dp' | |
mo__modifiers/attribute | Attribute | Cell of strings | 'start' | |
mo__modifiers/value | Value |
Ports
| Name | Type | Description | IO Type | Number |
|---|---|---|---|---|
flowPort_a | implicit | output | 1 | |
flowPort_b | implicit | output | 2 | |
flange_a | implicit | input | 1 |