.BuildingSystems.Utilities.Psychrometrics.X_pW

Information

Block to compute the humidity ratio for a given water vapor partial pressure.

If use_p_in is false (default option), the p parameter is used as atmospheric pressure, and the p_in input connector is disabled; if use_p_in is true, then the p parameter is ignored, and the value provided by the input connector is used instead.

Revisions

• September 16, 2013 by Michael Wetter:
  Added attributes to variable p_w.
• February 17, 2010 by Michael Wetter:
  Renamed block from HumidityRatio_pWat to X_pW.
• April 14, 2009 by Michael Wetter:
  Converted model to block because RealInput are obsolete in Modelica 3.0.
• August 7, 2008 by Michael Wetter:
  First implementation.