modelControlledFlowMachine

Fans with different control signals as input

Extends from Modelica.Icons.Example (Icon for runnable examples), Buildings.Fluid.Movers.Validation.BaseClasses.ControlledFlowMachine.

Information

This example demonstrates the use of the flow model with four different configurations. At steady-state, all flow models have the same mass flow rate and pressure difference. Note that addPowerToMedium=false since otherwise, Dymola computes the enthalpy change of the component as a fraction (k*m_flow+P_internal)/m_flow which leads to an error because of 0/0 at zero flow rate.

Components

Type	Name	Description
Modelica.Blocks.Sources.Pulse	y (from ControlledFlowMachine)
Buildings.Fluid.Sources.Boundary_pT	sou (from ControlledFlowMachine)
Buildings.Fluid.Sensors.MassFlowRate	masFloRat1 (from ControlledFlowMachine)
Buildings.Fluid.Sensors.RelativePressure	relPre (from ControlledFlowMachine)
Buildings.Fluid.Movers.SpeedControlled_y	fan1 (from ControlledFlowMachine)
Buildings.Fluid.FixedResistances.PressureDrop	dp1 (from ControlledFlowMachine)	Pressure drop
Buildings.Fluid.FixedResistances.PressureDrop	dp2 (from ControlledFlowMachine)	Pressure drop
Buildings.Fluid.Sensors.MassFlowRate	masFloRat2 (from ControlledFlowMachine)
Buildings.Fluid.FixedResistances.PressureDrop	dp3 (from ControlledFlowMachine)	Pressure drop
Buildings.Fluid.Sensors.MassFlowRate	masFloRat3 (from ControlledFlowMachine)
Buildings.Fluid.Movers.FlowControlled_dp	fan3 (from ControlledFlowMachine)
Buildings.Fluid.Movers.FlowControlled_m_flow	fan2 (from ControlledFlowMachine)
Buildings.Fluid.FixedResistances.PressureDrop	dp5 (from ControlledFlowMachine)	Pressure drop
Buildings.Fluid.FixedResistances.PressureDrop	dp6 (from ControlledFlowMachine)	Pressure drop
Buildings.Fluid.FixedResistances.PressureDrop	dp7 (from ControlledFlowMachine)	Pressure drop
Buildings.Fluid.Sources.Boundary_pT	sin (from ControlledFlowMachine)

Revisions

March 21, 2023, by Hongxiang Fu:
Deleted the mover with Nrpm signal. This is for IBPSA, #1704.