modelFlowControlled_m_flow
Fan or pump with ideally controlled mass flow rate as input signal
Extends from IBPSA.Fluid.Movers.BaseClasses.PartialFlowMachine.
Information
This model describes a fan or pump with prescribed mass flow rate.
The efficiency of the device is computed based
on the efficiency and pressure curves that are defined
in record per, which is of type
IBPSA.Fluid.Movers.SpeedControlled_Nrpm.
See the User's Guide for more information.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.SIunits.MassFlowRate | constantMassFlowRate | m_flow_nominal | Constant pump mass flow rate, used when inputType=Constant |
| Modelica.SIunits.MassFlowRate | massFlowRates | m_flow_nominal*{per.speeds[i]/per.speeds[end] for i in 1:size(per.speeds, 1)} | Vector of mass flow rate set points, used when inputType=Stage |
| Nominal condition | |||
| Modelica.SIunits.PressureDifference | dp_nominal | if rho_default < 500 then 500 else 10000 | Nominal pressure raise, used for default pressure curve if not specified in record per |
| Dynamics › Filtered speed | |||
| Modelica.SIunits.MassFlowRate | m_flow_start | 0 | Initial value of mass flow rate |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | m_flow_in | Prescribed mass flow rate | |
| Modelica.Blocks.Interfaces.RealOutput | m_flow_actual | Actual mass flow rate |
Revisions
-
March 24, 2017, by Michael Wetter:
RenamedfilteredSpeedtouse_inputFilter.
This is for #665. -
November 10, 2016, by Michael Wetter:
Changed default values formassFlowRates.
This is for #583. -
March 2, 2016, by Filip Jorissen:
Refactored model such that it directly extendsPartialFlowMachine. This is for #417. -
April 2, 2015, by Filip Jorissen:
Added code for supporting stage input and constant input. -
January 6, 2015, by Michael Wetter:
Revised model for OpenModelica. -
February 14, 2012, by Michael Wetter:
Added filter for start-up and shut-down transient. -
May 25, 2011, by Michael Wetter:
Revised implementation of energy balance to avoid having to use conditionally removed models. -
July 27, 2010, by Michael Wetter:
Redesigned model to fix bug in medium balance. - March 24, 2010, by Michael Wetter:
Revised implementation to allow zero flow rate. - October 1, 2009
by Michael Wetter:
Model added to the IBPSA library.