blockDryWetSelector

Selects results from dry or wet coil
Diagram of DryWetSelectorOpen the diagram
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Information

This block smoothly transitions the results from the dry coil and the wet coil computation. The independent variable for the transition is the difference between the water mass fractions at the apparatus dew point, as computed by the wet coil model, and the coil inlet mass fraction.

Parameters

TypeNameDefaultDescription
Modelica.Units.SI.MassFractiondeltaX0.0001Range of x where transition between dry and wet coil occurs

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealInputXEvaInInlet air mass fraction
Modelica.Blocks.Interfaces.RealInputXADPMass fraction at ADP
Modelica.Blocks.Interfaces.RealInputEIRWetEnergy Input Ratio
Modelica.Blocks.Interfaces.RealInputQWet_flowTotal cooling capacity
Modelica.Blocks.Interfaces.RealInputSHRWetSensible Heat Ratio: Ratio of sensible heat load to total heat load
Modelica.Blocks.Interfaces.RealInputmWetWat_flowMass flow rate of water condensed at cooling coil
Modelica.Blocks.Interfaces.RealInputEIRDryEnergy Input Ratio
Modelica.Blocks.Interfaces.RealInputQDry_flowTotal cooling capacity
Modelica.Blocks.Interfaces.RealOutputEIREnergy Input Ratio
Modelica.Blocks.Interfaces.RealOutputQ_flowTotal cooling capacity
Modelica.Blocks.Interfaces.RealOutputSHRSensible Heat Ratio: Ratio of sensible heat load to total heat load
Modelica.Blocks.Interfaces.RealOutputmWat_flowMass flow rate of water condensed at cooling coil

Components

TypeNameDefaultDescription
RealfraDryFraction of results that are taken from the dry coil model
RealfraWetFraction of results that are taken from the wet coil model

Revisions

  • May 7, 2020, by Michael Wetter:
    Corrected limits for dX.
    This is for #1933.
  • April 13, 2017, by Michael Wetter:
    Removed temperature that is no longer needed.
  • September 20, 2012 by Michael Wetter:
    Revised implementation.
  • August 9, 2012 by Kaustubh Phalak:
    First implementation.