.BuildingSystems.Fluid.Actuators.Valves.ThreeWayEqualPercentageLinear

Information

Three way valve with equal percentage characteristics between port_1 and port_2 and linear opening characteristic between port_3 and port_2. Such opening characteristics were typical for valves from Landis & Gyr (now Siemens).

This model is based on the partial valve models BuildingSystems.Fluid.Actuators.BaseClasses.PartialThreeWayValve and BuildingSystems.Fluid.Actuators.BaseClasses.PartialTwoWayValve. See BuildingSystems.Fluid.Actuators.BaseClasses.PartialThreeWayValve for the implementation of the three way valve and see BuildingSystems.Fluid.Actuators.BaseClasses.PartialTwoWayValve for the implementation of the regularization near the origin.

Revisions

• March 7, 2022, by Michael Wetter:
  Set final massDynamics=energyDynamics.
  This is for #1542.
• June 10, 2021, by Michael Wetter:
  Changed implementation of the filter and changed the parameter order to a constant as most users need not change this value.
  This is for #1498.
• February 21, 2020, by Michael Wetter:
  Changed icon to display its operating stage.
  This is for #1294.
• November 5, 2019, by Michael Wetter:
  Moved assignment of leakage from BuildingSystems.Fluid.Actuators.BaseClasses.PartialThreeWayValve to the parent classes.
  This is for #1227.
• February 20, 2012 by Michael Wetter:
  Renamed parameter dp_nominal to dpValve_nominal, and added new parameter dpFixed_nominal. See BuildingSystems.Fluid.Actuators.UsersGuide.
• February 14, 2012 by Michael Wetter:
  Added filter to approximate the travel time of the actuator.
• March 25, 2011, by Michael Wetter:
  Added homotopy method.
• June 16, 2008 by Michael Wetter:
  First implementation.