AixLib.Fluid.Actuators.Dampers.VAVBoxExponential

# .AixLib.Fluid.Actuators.Dampers.VAVBoxExponential

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

## 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.

- 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.

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