Buildings.HeatExchangers.CoolingTowers.BaseClasses

Package Content

Name	Description
PartialStaticTwoPortCoolingTower	Cooling tower with variable speed

Buildings.HeatExchangers.CoolingTowers.BaseClasses.PartialStaticTwoPortCoolingTower

Parameters

Type	Name	Default	Description
replaceable package Medium		PartialMedium	Medium in the component
Initialization
MassFlowRate	m_flow		Mass flow rate from port_a to port_b (m_flow > 0 is design flow direction) [kg/s]
Pressure	dp		Pressure difference between port_a and port_b [Pa]
Advanced
Temp	flowDirection	Modelica_Fluid.Types.FlowDir...	Unidirectional (port_a -> port_b) or bidirectional flow component

Connectors

Type	Name	Description
FluidPort_a	port_a	Fluid connector a (positive design flow direction is from port_a to port_b)
FluidPort_b	port_b	Fluid connector b (positive design flow direction is from port_a to port_b)
input RealInput	TAir	Entering air dry or wet bulb temperature

Modelica definition

model PartialStaticTwoPortCoolingTower 
  "Cooling tower with variable speed" 
  extends Fluids.Interfaces.PartialStaticTwoPortHeatMassTransfer;
  extends Buildings.BaseClasses.BaseIcon;
  Modelica.SIunits.CelsiusTemperature TWatIn_degC(start=35) 
    "Water inlet temperature";
  Modelica.SIunits.CelsiusTemperature TWatOut_degC(start=28) 
    "Water outlet temperature";
  Modelica.SIunits.CelsiusTemperature TAirIn_degC(start=25) 
    "Air dry-bulb inlet temperature";
  Modelica.Blocks.Interfaces.RealInput TAir(redeclare type SignalType = 
        Modelica.SIunits.Temperature) 
    "Entering air dry or wet bulb temperature";
equation 
  TWatIn_degC  = medium_a.T_degC;
  TWatOut_degC = medium_b.T_degC;
  TAirIn_degC  = Modelica.SIunits.Conversions.to_degC(TAir);
  
  dp = 0;
  mXi_flow = zeros(Medium.nXi); // no mass added or removed (sensible heat only)
  
end PartialStaticTwoPortCoolingTower;