modelWetCoil

Calculates wet coil condition
Diagram of WetCoilOpen the diagram
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Extends from Buildings.Fluid.DXSystems.Cooling.BaseClasses.PartialCoilCondition (Partial block for dry and wet coil conditions).

Information

This block calculates the rate of cooling and the coil surface condition under the assumption that the coil is wet.

The dry coil conditions are computed in Buildings.Fluid.DXSystems.BaseClasses.DryCoil. See Buildings.Fluid.DXSystems.Cooling.UsersGuide for an explanation of the model.

Parameters

TypeNameDefaultDescription
Buildings.Fluid.DXSystems.Cooling.AirSource.Data.Generic.DXCoildatCoi (from EssentialParameters)Performance data
Booleanuse_mCon_flow (from PartialCoilInterface)Set to true to enable connector for the condenser mass flow rate
BooleanvariableSpeedCoil (from PartialCoilCondition)Flag, set to true for coil with variable speed

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.IntegerInputstage (from PartialCoilInterface)Stage of coil, or 0/1 for variable-speed coil
Modelica.Blocks.Interfaces.RealInputspeRat (from PartialCoilInterface)Speed ratio
Modelica.Blocks.Interfaces.RealInputm_flow (from PartialCoilInterface)Air mass flow rate
Modelica.Blocks.Interfaces.RealInputTEvaIn (from PartialCoilInterface)Temperature of air entering the cooling coil
Modelica.Blocks.Interfaces.RealInputTConIn (from PartialCoilInterface)Outside air dry bulb temperature for an air cooled condenser or wetbulb temperature for an evaporative cooled condenser
Modelica.Blocks.Interfaces.RealOutputEIR (from PartialCoilInterface)Energy Input Ratio
Modelica.Blocks.Interfaces.RealOutputQ_flow (from PartialCoilInterface)Total cooling capacity
Modelica.Blocks.Interfaces.RealInputmCon_flow (from PartialCoilInterface)Water mass flow rate at condensers for water source DX units
Modelica.Blocks.Interfaces.RealOutputTADPDry bulb temperature of air at ADP
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
Modelica.Blocks.Interfaces.RealOutputXADPHumidity mass fraction of air at apparatus dew point
Modelica.Blocks.Interfaces.RealInputXEvaInInlet air mass fraction
Modelica.Blocks.Interfaces.RealInputpPressure at inlet of coil
Modelica.Blocks.Interfaces.RealInputhEvaInSpecific enthalpy of air entering the coil

Components

TypeNameDefaultDescription
Buildings.Fluid.DXSystems.BaseClasses.CapacityAirSourcecoiCap (from PartialCoilCondition)
Buildings.Utilities.Psychrometrics.TWetBul_TDryBulXiwetBulCalculates wet-bulb temperature
Buildings.Fluid.DXSystems.Cooling.BaseClasses.ApparatusDewPointappDewPtCalculates air properties at apparatus dew point (ADP) at existing air-flow conditions
Buildings.Fluid.DXSystems.Cooling.BaseClasses.SensibleHeatRatioshrCalculates sensible heat ratio
Buildings.Fluid.DXSystems.Cooling.BaseClasses.CondensationconRatCalculates rate of condensation

Contents

NameDescription
MediumMedium model

Revisions

  • April 5, 2023, by Xing Lu:
    Connect statements with references to cooCap changed to coiCap.
  • April 12, 2012 by Kaustubh Phalak:
    First implementation.