modelNTUWaterHeater

NTU water heater

Extends from ThermoSysPro.Fluid.Interfaces.PropertyInterfaces.WaterSteamFluidTypeParameterInterface (Interface to display the water/steam fluid type after parametrization), ThermoSysPro.Fluid.Interfaces.IconColors (Colors of the static, singular and dynamic model icons).

Information

## Copyright © EDF 2002 - 2026   
## ThermoSysPro Version 4.2   
This component model is documented in Sect. 9.5.5 of the ThermoSysPro book.

Parameters

Type	Name	Default	Description
Real	lambdaE	0	Pressure loss coefficient on the water side
Units.SI.Area	SCondDes	3000	Exchange surface for the condensation and deheating
Units.SI.CoefficientOfHeatTransfer	KCond	1	Heat transfer coefficient for the condensation
Units.SI.Area	SPurge	0	Drain surface - if > 0: with drain cooling
Units.SI.CoefficientOfHeatTransfer	KPurge	1	Heat transfer coefficient for the drain cooling
Units.SI.MassFlowRate	gamma_diff_e	1e-4	Diffusion conductance for the water side (active if diffusion=true in neighbouring volumes)
Boolean	continuous_flow_reversal	false	true: continuous flow reversal - false: discontinuous flow reversal
Boolean	diffusion	false	true: energy balance equation with diffusion - false: energy balance equation without diffusion
Fluid › Fluid properties
WaterSteamFluidType	wsftype (from WaterSteamFluidTypeParameterInterface)	WaterSteamFluidType.WaterSteam	Water/steam fluid type
IF97Region	region_eeF	IF97Region.All_regions	IF97 region at the inlet of the water side (active for IF97 water/steam only)
IF97Region	region_seF	IF97Region.All_regions	IF97 region at the outlet of the water side (active for IF97 water/steam only)
IF97Region	region_evC	IF97Region.All_regions	IF97 region at the inlet of the vapor side (active for IF97 water/steam only)
IF97Region	region_mF	IF97Region.All_regions	IF97 region in the drain (active for IF97 water/steam only)
IF97Region	region_epC	IF97Region.All_regions	IF97 region at the inlet of the drain (active for IF97 water/steam only)
IF97Region	region_spC	IF97Region.All_regions	IF97 region at the outlet of the drain (active for IF97 water/steam only)
IF97Region	region_flash	IF97Region.All_regions	IF97 region in the flash zone of the drain (active for IF97 water/steam only)

Connectors

Type	Name	Description
Interfaces.Connectors.FluidInlet	Ee	Water inlet
Interfaces.Connectors.FluidOutlet	Se	Water outlet
Interfaces.Connectors.FluidInlet	Ep	Drain inlet
Interfaces.Connectors.FluidOutlet	Sp	Drain outlet
Interfaces.Connectors.FluidInlet	Ev	Vapor inlet

Components

Type	Name	Default	Description
Units.SI.AbsolutePressure	P		Fluid pressure
Units.SI.SpecificEnthalpy	h		Fluid specific enthalpy
Units.SI.SpecificEnthalpy	HsateC		Saturation specific enthalpy of the water at the pressure of the vapor inlet
Units.SI.SpecificEnthalpy	HsatvC		Saturation specific enthalpy of the vapor at the pressure of the vapor inlet
Units.SI.Area	SDes		Heat exchange surface for deheating
Units.SI.SpecificEnthalpy	HeiF		Fluid specific enthalpy after drain cooling
Units.SI.SpecificEnthalpy	HDesF		Fluid specific enthalpy after deheating
Units.SI.Temperature	TeiF		Fluid temperature after drain cooling
Units.SI.Temperature	TsatC		Saturation temperature
Units.SI.Power	W		Total heat power transfered to the cooling water
Units.SI.Power	Wdes		Energy transfer during deheating
Units.SI.Power	Wcond		Energy transfer during condensation
Units.SI.Power	Wflash		Energy transfer during partial vaporisation in the drain
Units.SI.Power	Wpurge		Energy transfer during drain cooling
Units.SI.SpecificEnthalpy	Hep		Mixing specific enthalpy of the drain and the condensate
Units.SI.Density	rho		Average water density
FluidType[4]	fluids		Fluids mixing in volume
FluidType	ftype_e		Fluid type for the water side
Integer	fluid_e	Integer(ftype_e)	Fluid number for the water side
ThermoSysPro.Units.SI.MassFraction	Xco2		CO2 mass fraction
ThermoSysPro.Units.SI.MassFraction	Xh2o		H20 mass fraction
ThermoSysPro.Units.SI.MassFraction	Xo2		O2 mass fraction
ThermoSysPro.Units.SI.MassFraction	Xso2		SO2 mass fraction
Units.SI.Power	Jep		Thermal power diffusion from the inlet of the drain
Units.SI.Power	Jev		Thermal power diffusion from the inlet of the vapor side
Units.SI.Power	Jsp		Thermal power diffusion from the outlet of the drain
Units.SI.Power	J		Total thermal power diffusion
Units.SI.MassFlowRate	gamma_ep		Diffusion conductance for the inlet of the drain
Units.SI.MassFlowRate	gamma_ev		Diffusion conductance for the inlet of the vapor side
Units.SI.MassFlowRate	gamma_sp		Diffusion conductance for the outlet of the drain
Real	rep		Value of r(Q/gamma) for the inlet of the drain
Real	rev		Value of r(Q/gamma) for inlet for the inlet of the vapor side
Real	rsp		Value of r(Q/gamma) for the outlet of the drain
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	proeeF		Water inlet fluid properties (4F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	proseF		Water outlet fluid properties (1F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prospC		Drain outlet fluid properties (4C)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	proevC		Vapor inlet fluid properties (1C)
ThermoSysPro.Properties.WaterSteam.Common.PropThermoSat	lsatC		Saturation conditions for the liquid phase
ThermoSysPro.Properties.WaterSteam.Common.PropThermoSat	vsatC		Saturation conditions for the vapor phase
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	promeF		Average water fluid properties (between 4F and 3F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prodesmC		Deheating average fluid properties (between 1C and 2C)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	promcF		Average deheating fluid properties (between 3F and 2F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prodesF		Deheating inlet fluid properties (2F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prodesmF		Average deheating fluid properties (between 2F and 1F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prosp		Drain outlet fluid properties before cooling (near 3C)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prompC		Average fluid properties in the drain (between 3C and 4C)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	prompF		Average water fluid properties (between 4F and 3F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	proecF		Water fluid properties (3F)
ThermoSysPro.Properties.WaterSteam.Common.ThermoProperties_ph	flashepC		Flash fluid properties (near 4C)

Revisions

Author  

Baligh El Hefni