modelPowerInterface

Partial model to compute power draw and heat dissipation of fans and pumps

Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).

Information

Block that implements the functions to compute the heat dissipation of fans and pumps. It is used by the model Buildings.Fluid.Movers.BaseClasses.PartialFlowMachine.

Type	Name	Default	Description
Boolean	homotopyInitialization	true	= true, use homotopy method
Boolean	motorCooledByFluid		Flag, true if the motor is cooled by the fluid stream
Modelica.Units.SI.VolumeFlowRate	delta_V_flow		Factor used for setting heat input into medium to zero at very small flows

Type	Name	Description
Modelica.Blocks.Interfaces.RealInput	V_flow	Volume flow rate
Modelica.Blocks.Interfaces.RealInput	WFlo	Flow work
Modelica.Blocks.Interfaces.RealInput	WHyd	Hydraulic work (converted to flow work and heat)
Modelica.Blocks.Interfaces.RealInput	PEle	Electrical power consumed
Modelica.Blocks.Interfaces.RealOutput	Q_flow	Heat input from fan or pump to medium

March 8, 2022, by Hongxiang Fu:
This model no longer computes WHyd. It now takes WHyd instead of etaHyd as an input from Buildings.Fluid.Movers.BaseClasses.FlowMachineInterface.
This is for #2668.
April 14, 2020, by Michael Wetter:
Changed homotopyInitialization to a constant.
This is for IBPSA, #1341.
December 2, 2016, by Michael Wetter:
Removed min attribute as otherwise numerical noise can cause the assertion on the limit to fail.
This is for #606.
March 15, 2016, by Michael Wetter:
Replaced spliceFunction with regStep. This is for issue 300.
February 19, 2016, by Michael Wetter:
First implementation during refactoring of mover models to make implementation clearer. This is for #417.