modelSpeedControlled_y

Fan or pump with ideally controlled normalized speed y as input signal

Extends from BuildingSystems.Fluid.Movers.BaseClasses.PartialFlowMachine.

Information

This model describes a fan or pump with prescribed normalized speed. The input connector provides the normalized rotational speed (between 0 and 1). The head is computed based on the performance curve that take as an argument the actual volume flow rate divided by the maximum flow rate and the relative speed of the fan.

See the User's Guide for more information.

Parameters

TypeNameDefaultDescription
Dynamics › Filtered speed
Realy_start0Initial value of speed

Components

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealInputyConstant normalized rotational speed

Revisions

  • March 29, 2023, by Hongxiang Fu:
    Removed the modification that normalised the speed input because it is no longer needed. This is for IBPSA, #1704.
  • March 1, 2023, by Hongxiang Fu:
    Removed the modification of m_flow_nominal.
    This is for #1705.
  • March 8, 2022, by Hongxiang Fu:
    Refactored the model by replacing not use_powerCharacteristic with the enumeration BuildingSystems.Fluid.Movers.BaseClasses.Types.HydraulicEfficiencyMethod. This is for #2668. March 7, 2022, by Michael Wetter:
    Set final massDynamics=energyDynamics.
    This is for #1542.
  • June 17, 2021, by Michael Wetter:
    Changed implementation of the filter.
    This is for #1498.
  • February 21, 2020, by Michael Wetter:
    Changed icon to display its operating stage.
    This is for #1294.
  • March 24, 2017, by Michael Wetter:
    Renamed filteredSpeed to use_inputFilter.
    This is for #665.
  • 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 2, 2016, by Filip Jorissen:
    Refactored model such that it directly extends PartialFlowMachine. This is for #417.
  • February 17, 2016, by Michael Wetter:
    Updated parameter names for #396.
  • 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.
  • November 22, 2014, by Michael Wetter:
    Revised implementation that uses the new performance data as a record.
  • 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 BuildingSystems library. Changed control signal from rpm to normalized value between 0 and 1
  • October 31, 2005 by Francesco Casella:
    Model added to the Fluid library