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Buildings.Fluid.Sensors.Conversions

Package with conversions for sensor models

Information

This package contains models to convert sensor output.

Extends from Modelica.Icons.Package (Icon for standard packages).

Package Content

NameDescription
Buildings.Fluid.Sensors.Conversions.To_VolumeFraction To_VolumeFraction Model to convert between mass fraction and volume fraction
Buildings.Fluid.Sensors.Conversions.Examples Examples Collection of models that illustrate model use and test models


Buildings.Fluid.Sensors.Conversions.To_VolumeFraction Buildings.Fluid.Sensors.Conversions.To_VolumeFraction

Model to convert between mass fraction and volume fraction

Buildings.Fluid.Sensors.Conversions.To_VolumeFraction

Information

This component converts mass fraction to volume fraction for an ideal gas. The default value for the parameter MMBul assumes that the bulk medium is air. The model assumes that the concentration of the measured substance is small enough to be neglected in the molar mass of the mixture.

Extends from Buildings.BaseClasses.BaseIcon (Base icon).

Parameters

TypeNameDefaultDescription
MolarMassMMMea Molar mass of measured substance [kg/mol]
MolarMassMMBulModelica.Media.IdealGases.Co...Molar mass of bulk medium [kg/mol]

Connectors

TypeNameDescription
input RealInputmMass fraction
output RealOutputVVolume fraction

Modelica definition

model To_VolumeFraction 
  "Model to convert between mass fraction and volume fraction"
  extends Buildings.BaseClasses.BaseIcon;

  Modelica.Blocks.Interfaces.RealInput m "Mass fraction";
  Modelica.Blocks.Interfaces.RealOutput V "Volume fraction";

 parameter Modelica.SIunits.MolarMass MMMea "Molar mass of measured substance";
 parameter Modelica.SIunits.MolarMass MMBul=Modelica.Media.IdealGases.Common.SingleGasesData.Air.MM 
    "Molar mass of bulk medium";
protected 
 parameter Real con = MMBul/MMMea 
    "Conversion coefficient from mass to volume fraction";
equation 
  V = con * m;
end To_VolumeFraction;

Automatically generated Tue Jan 8 08:30:38 2013.