modelCoolingTower

Cooling tower

Information

## Copyright © EDF 2002 - 2026  


## ThermoSysPro Version 4.2

Parameters

Type	Name	Default	Description
Integer	fluid	1	<html>Fluid number: <br>1 - Water/Steam <br>7 - WaterSteamSimple </html>
Units.SI.AbsolutePressure	Patm	101325	Pressure above the fluid level
Units.SI.MassFlowRate	Qesp	0.001
Units.SI.Area	A	13114	Tower cross-sectional aera
Real	a1	1/z1	Water/air interfacial area for the packing (m2/m3)
Units.SI.Height	z1	1.6	Height of the packing heat exchange zone
Real	lambda	1.227	Beta packing exchange parameter
Real	Y	0.51	Beta packing exchange parameter
Real	p_Beta1	0	If > 0, fixed transfert coefficient for the evporating mass (otherwise, this coef. is computed)
Real	Xo2as		O2 mass fraction in dry air
Boolean	steady_state	true	true: start from steady state
Integer	mode	0	IF97 region. 1:liquid - 2:steam - 4:saturation line - 0:automatic
Boolean	packing_zone_activated	true	true: activation of the packing zone
Boolean	rain_zone_activated	true	Activation of the rain zone
Units.SI.Area	A2	A	Flow cross-sectional area in the tower
Units.SI.Height	z2	z1	Height of the exchange zone in the rain zone
Units.SI.Diameter	Dg	0.005	Droplets diameter
Real	p_Beta2	0	If > 0, the mass transfer coef. is fixed, otherwise it is computed

Connectors

Type	Name	Description
Connectors.FluidInlet	Cws1	Cooling water inlet
Connectors.FluidOutlet	Cws2	Cooling water outlet
ThermoSysPro.FlueGases.Connectors.FlueGasesInlet	Cair1	Air inlet
ThermoSysPro.FlueGases.Connectors.FlueGasesOutlet	Cair2	Air outlet

Components

Type	Name	Description
Real	Beta1	Coefficient de tranfert de masse d'évaporation calculé avec nn et lambda (packing)
Units.SI.Volume	dV	Volume of the packing exchange zone
Real	xeH2o	Air humidity at the inlet (kg/kg)
Units.SI.MassFlowRate	QsAir2	Ambiant air mass flow at the inlet of the packing zone
Units.SI.SpecificEnthalpy	HmAir2	Ambiant air specific enthalpy at the inlet of the packing zone
Units.SI.AbsolutePressure	PeAir2	Ambiant air pressure at the inlet of the packing zone
Units.SI.Temperature	Teair1	Ambiant air temperature at the inlet of the packing zone
Real	xeH2o1	Ambiant air humidity at the inlet of the packing zone (kg/kg)
Units.SI.MassFlowRate	QsAir1	Hot air mass flow at the outlet of the packing zone
Units.SI.SpecificEnthalpy	HmAir1	Hot air specific enthalpy at the outlet of the packing zone
Units.SI.Temperature	Tsair1	Hot air temperature at the outlet of the packing zone
Real	xsH2o1	Hot air humidity at the outlet of the packing zone (kg/kg)
Real	xsO2	Hot air O2 mass fraction at the outlet of the packing zone
Units.SI.AbsolutePressure	PeEau1	Hot water pressure at the inlet of the packing zone
Units.SI.MassFlowRate	QeEau1	Hot water mass flow rate at the inlet of the packing zone
Units.SI.SpecificEnthalpy	HeEau1	Hot water specific enthalpy at the inlet of the packing zone
Units.SI.Temperature	Teeau1	Hot water temperature at the inlet of the packing zone
Units.SI.MassFlowRate	QsEau1	Cold water pressure at the outlet of the packing zone
Units.SI.Temperature	Tseau1	Cold water tempretaure at the outlet of the packing zone
Units.SI.SpecificEnthalpy	HmEau1	Cold water specific enthalpy at the outlet of the packing zone
Units.SI.Power	dw1	Cooling power given by water convection and evaporation in the packing zone
Units.SI.SpecificEnthalpy	Hs1	Air specific enthalpy in the packing zone
Units.SI.SpecificEnthalpy	Hse1	Air specific enthalpy saturated at Teau in the packing zone
Units.SI.MassFlowRate	Qevap1	Evaporation mass flow in the packing zone
Units.SI.Volume	Vair1	Air volume in the packing zone
Units.SI.Volume	Veau1	Water volume in the packing zone
Units.SI.Density	rhoEair1	Air density at the inlet
Units.SI.DynamicViscosity	muEair1	Air viscosity at the inlet
Units.SI.SpecificHeatCapacity	CpEair1	Air specific heat capacity at the inlet
Units.SI.ThermalConductivity	lambdaEair1	Air thermal conductivity at the inlet
Units.SI.Density	rhoSair1	Air density at the outlet
Units.SI.DynamicViscosity	muSair1	Air viscosity at the outlet
Units.SI.SpecificHeatCapacity	CpSair1	Air specific heat capacity at the outlet
Units.SI.ThermalConductivity	lambdaSair1	Air thermal conductivity at the outlet
Units.SI.Density	rho1	Water density
Real	Beta2	Transfer coefficient for the rain
Units.SI.Velocity	Ug	Droplets velocity
Units.SI.Velocity	Ua	Air velocity
Real	a2	Interfacial area water/air (m2/m3) (rain zone)
Units.SI.PrandtlNumber	Pr	Droplets Prandtl number
Units.SI.NusseltNumber	Nu	Droplets Nusselt number
Units.SI.ReynoldsNumber	Re	Droplets Reynols number
Units.SI.Volume	dV2	Volume of the rain exchange zone
Units.SI.MassFlowRate	QeAir2	Air mass flow rate at the inlet of the rain zone
Units.SI.SpecificEnthalpy	HeAir2	Air specific enthalpy at the inlet of the rain zone
Units.SI.Temperature	Teair2	Air temperature at the inlet of the rain zone
Units.SI.Temperature	Tsair2	Air temperature at the outlet of the rain zone
Units.SI.Temperature	Teeau2	Hot water temperature at the inlet of the rain zone
Units.SI.Temperature	Tseau2	Cold water temperature at the outlet of the rain zone
Units.SI.MassFlowRate	QsEau2	Cold water mass flow rate at the outlet of the rain zone
Units.SI.MassFlowRate	Qevap2	Evaporation mass flow rate in the rain zone
Real	xsH2o2	Air humidity at the outlet of the rain zone (kg/kg)
Units.SI.Power	dw2	Thermal power exchanged between the air and the droplets by convection and evaporation in the rain zone
Units.SI.SpecificEnthalpy	Hs2	Air specific enthalpy at temprature Tair in the rain zone
Units.SI.SpecificEnthalpy	Hse2	Air specific enthalpy saturated at temperature Teau in the rain zone
Real	ng	Number of droplets
Units.SI.Volume	Vair2	Air volume in the rain exchange zone
Units.SI.Volume	Veau2	Water volume in the rain exchange zone
Units.SI.SpecificEnthalpy	HmEau2	Average specific enthalpy in the rain zone
Units.SI.Area	SEAU	Contact area air/water
Units.SI.Density	rhoEair2	Air density at the inlet
Units.SI.DynamicViscosity	muEair2	Air viscosity at the inlet
Units.SI.SpecificHeatCapacity	CpEair2	Air specific heat capacity at the inlet
Units.SI.ThermalConductivity	lambdaEair2	Air thermal conductivity at the inlet
Units.SI.Density	rhoSair2	Air density at the outlet
Units.SI.DynamicViscosity	muSair2	Air viscosity at the outlet
Units.SI.SpecificHeatCapacity	CpSair2	Air specific heat capacity at the outlet
Units.SI.ThermalConductivity	lambdaSair2	Air thermal conductivity at the outlet
Units.SI.Density	rho2	Water density
Real	ddairhp1	dérivé de la masse volumique de l'air par rapport à H paching
Real	ddairhp2	dérivé de la masse volumique de l'air par rapport à H pluie
Real	Xh2oTeau1	Fraction massique en H2o de l'air a Teeau zone 1
Real	Xh2oTeau2	Fraction massique en H2o de l'air a Teeau zone 1
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	pro_input1	Packing zone water/steam properties
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	pro_output1	Packing zone water/steam properties
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	pro_input2	Rain zone water/steam properties
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	pro_output2	Rain zone water/steam properties

Revisions

Author  

Baligh El Hefni