blockX_pW
Humidity ratio for given water vapor pressure
Extends from Buildings.Utilities.Psychrometrics.BaseClasses.HumidityRatioVaporPressure.
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.
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealOutput | X_w | Species concentration at dry bulb temperature | |
| Modelica.Blocks.Interfaces.RealInput | p_w | Water vapor pressure | |
| Modelica.Units.SI.MassFraction | x_w | Water mass fraction per mass of dry air |
Revisions
-
September 16, 2013 by Michael Wetter:
Added attributes to variablep_w. -
February 17, 2010 by Michael Wetter:
Renamed block fromHumidityRatio_pWattoX_pW. -
April 14, 2009 by Michael Wetter:
Converted model to block becauseRealInputare obsolete in Modelica 3.0. -
August 7, 2008 by Michael Wetter:
First implementation.