modelCondenseroldnew

Extends from TRANSFORM.Fluid.Volumes.BaseClasses.PartialVolume_wlevel (Base class for volume models).

Information

As the liquid level goes to zero, the drain enthalpy will approach the mixed volume enthalpy. This will most often result in too low pressure, and is protected with an assert(p>1000 Pa).
The drum liquid level should not be too large, an assert is triggered when the condenser gets full.

Parameters

Type	Name	Default	Description
SI.Area	surfaceArea_inner	N_tubespitubelength*d_inner	Inner heat transfer area (total)
SI.Area	surfaceArea_outer	N_tubespitubelength*d_outer	Inner heat transfer area (total)
SI.Area	Afreeflow	tubelength(diameter - d_outersqrt(N_tubes))	Outer free flow area
SI.Length	level_max	if DrumOrientation == 0 then diameter else length	Maximum possible level (relative to the condenser bottom outlet)
SI.Length	level_min	min(-V_hotwell/A_hotwell, -1e-5)	Minimum possible Level (relative to the condenser bottom outlet)
SI.Area	Aunit	1.0	Unit area to match units of levels and volumes
SI.CoefficientOfHeatTransfer	alpha	1	Convection heat transfer coefficient
Advanced › Dynamics
Dynamics	energyDynamics (from PartialVolume_wlevel)	Dynamics.DynamicFreeInitial	Formulation of energy balances
Dynamics	massDynamics (from PartialVolume_wlevel)	energyDynamics	Formulation of mass balances
Dynamics	substanceDynamics (from PartialVolume_wlevel)	massDynamics	Formulation of substance balances
Dynamics	traceDynamics (from PartialVolume_wlevel)	massDynamics	Formulation of trace substance balances
Initialization
SI.Height	level_start (from PartialVolume_wlevel)	0.1
SI.Temperature	Twall_start	300	Tube wall temperature start value
Initialization › Start Value: Absolute Pressure
Medium.AbsolutePressure	p_start (from PartialVolume_wlevel)	Medium.p_default	Pressure
Initialization › Start Value: Temperature
Boolean	use_T_start (from PartialVolume_wlevel)	true	Use T_start if true, otherwise h_start
Medium.Temperature	T_start (from PartialVolume_wlevel)	Medium.T_default	Temperature
Initialization › Start Value: Specific Enthalpy
Medium.SpecificEnthalpy	h_start (from PartialVolume_wlevel)	Medium.specificEnthalpy_pTX(p_start, T_start, X_start)	Specific enthalpy
Initialization › Start Value: Species Mass Fraction
SI.MassFraction[Medium.nX]	X_start (from PartialVolume_wlevel)	Medium.X_default	Mass fraction
Initialization › Start Value: Trace Substances
SIadd.ExtraProperty[Medium.nC]	C_start (from PartialVolume_wlevel)	fill(0, Medium.nC)	Mass-Specific value
Initialization › Dynamics
Dynamics	energyDynamicsWall	Dynamics.FixedInitial	Formulation of energy balances
General › Geometry
Integer	DrumOrientation	0	0: Horizontal; 1: Vertical
SI.Length	diameter	1	Shell cylinder diameter
SI.Length	length	5	Shell cylinder length (along tubes)
SI.Volume	V_hotwell	1.0	Hotwell liquid volume
SI.Area	A_hotwell	1.0	Hotwell surface area
General › Geometry - cooling tubes
Integer	N_tubes	1000	Total number of parallel tubes
SI.Length	tubelength	length	Effective tubelength (single tube)
SI.Length	d_inner	0.016	Inner diameter (single tube)
SI.Length	d_outer	0.020	Outer diameter (single tube)

Connectors

Type	Name	Description
Interfaces.FluidPort_State	feed	portSteam_a
Interfaces.FluidPort_Flow	drain_cool	portCoolant_b
Interfaces.FluidPort_Flow	feed_cool	portCoolant_a
Interfaces.FluidPort_State	drain	portSteam_b

Components

Type	Name	Default	Description
Geometry	geometry
SI.Volume	V (from PartialVolume_wlevel)		Volume
Medium.BaseProperties	medium (from PartialVolume_wlevel)
SI.Height	level (from PartialVolume_wlevel)		Liquid level
SI.Mass	m (from PartialVolume_wlevel)		Mass
SI.InternalEnergy	U (from PartialVolume_wlevel)		Internal energy
SI.Mass[Medium.nXi]	mXi (from PartialVolume_wlevel)		Species mass
SIadd.ExtraPropertyExtrinsic[Medium.nC]	mC (from PartialVolume_wlevel)		Trace substance extrinsic value
SIadd.ExtraPropertyExtrinsic	mC_scaled (from PartialVolume_wlevel)		Scaled trace substance for improved numerical stability
SIadd.ExtraProperty[Medium.nC]	C (from PartialVolume_wlevel)		Trace substance mass-specific value
SI.MassFlowRate	mb (from PartialVolume_wlevel)		Mass flow rate source/sinks within volumes
SI.HeatFlowRate	Ub (from PartialVolume_wlevel)		Energy source/sinks within volumes (e.g., ohmic heating, external convection)
SI.MassFlowRate[Medium.nXi]	mXib (from PartialVolume_wlevel)		Species mass flow rates source/sinks within volumes
SIadd.ExtraPropertyFlowRate[Medium.nC]	mCb (from PartialVolume_wlevel)		Trace flow rate source/sinks within volumes (e.g., chemical reactions, external convection)
SI.Acceleration	g_n	Modelica.Constants.g_n	Gravitational acceleration
CoolMedium.ThermodynamicState	state_coolingwater
SI.Volume	V_liquid		Liquid volume
SI.Power	Q_cool		Total power to cooling water
SI.MassFlowRate	m_flow		Total mass flowrate
SI.Temperature	Tcool_in		Cooling water inlet temperature
SI.Temperature	Tcool_out		Cooling water outlet temperature
Modelica.Units.NonSI.Temperature_degC	dT_lm		Log mean temperature difference, water side
TRANSFORM.HeatAndMassTransfer.Volumes.SimpleWall	tubeWall
HeatAndMassTransfer.BoundaryConditions.Heat.Temperature	T_cool
Modelica.Blocks.Sources.RealExpression	T_coolant
HeatAndMassTransfer.Resistances.Heat.Convection	heatRes_outer
HeatAndMassTransfer.BoundaryConditions.Heat.Temperature	T_shell
Modelica.Blocks.Sources.RealExpression	T_condenser
HeatAndMassTransfer.Resistances.Heat.ConvectionMedia	heatRes_inner
Media.BaseProperties2Phase	mediaProps

Name	Description
Geometry
CoolMedium
MaterialWall

modelCondenseroldnew

Information

Parameters

Connectors

Components

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