modelVAVBoxExponential

VAV box with a fixed resistance plus a damper model withe exponential characteristics

Extends from IBPSA.Fluid.Actuators.BaseClasses.PartialDamperExponential.

Information

Model of two resistances in series. One resistance has a fixed flow coefficient, the other resistance is an air damper whose flow coefficient is an exponential function of the opening angle.

If dp_nominalIncludesDamper=true, then the parameter dp_nominal is equal to the pressure drop of the damper plus the fixed flow resistance at the nominal flow rate. If dp_nominalIncludesDamper=false, then dp_nominal does not include the flow resistance of the air damper.

Parameters

TypeNameDefaultDescription
Nominal condition
Booleandp_nominalIncludesDampertrueset to true if dp_nominal includes the pressure loss of the open damper

Revisions

  • January 22, 2016, by Michael Wetter:
    Corrected type declaration of pressure difference. This is for #404.
  • December 14, 2012 by Michael Wetter:
    Renamed protected parameters for consistency with the naming conventions.
  • April 13, 2010 by Michael Wetter:
    Added noEvent to guard evaluation of the square root for negative numbers during the solver iterations.
  • June 10, 2008 by Michael Wetter:
    Introduced new partial base class, PartialDamperExponential.
  • September 11, 2007 by Michael Wetter:
    Redefined kRes, now the pressure drop of the fully open damper is subtracted from the fixed resistance.
  • February 24, 2010 by Michael Wetter:
    Added parameter dp_nominalIncludesDamper.
  • July 27, 2007 by Michael Wetter:
    First implementation.