modelHEXvle2vle_L3_2ph_CU_simple

Extends from ClaRa.Basics.Icons.HEX04, ClaRa.Basics.Icons.ComplexityLevel (Displays the complexity level inside model icon ).

Information

For detailed model documentation please consult the html-documentation shipped with ClaRa.

Authorship and Copyright Statement for original (initial) Contribution

Author:

References:

For references please consult the html-documentation shipped with ClaRa.

Remarks:

This component was developed by ClaRa development team under the 3-clause BSD License.

Acknowledgements:

ClaRa originated from the collaborative research projects DYNCAP and DYNSTART. Both research projects were supported by the German Federal Ministry for Economic Affairs and Energy (FKZ 03ET2009 and FKZ 03ET7060).

CLA:

The author(s) have agreed to ClaRa CLA, version 1.0. See https://claralib.com/pdf/CLA.pdf

By agreeing to ClaRa CLA, version 1.0 the author has granted the ClaRa development team a permanent right to use and modify his initial contribution as well as to publish it or its modified versions under the 3-clause BSD License.

The ClaRa development team consists of the following partners:

TLK-Thermo GmbH (Braunschweig, Germany)

XRG Simulation GmbH (Hamburg, Germany).

Parameters

Type	Name	Default	Description
Boolean	parallelTubes	if orientation == flowOrientation and N_baffle == 0 then true elseif orientation <> flowOrientation and N_baffle == 0 then true else false	True if tues are parallel to shell flow orientation
Real[2]	yps_nom	{yps_liq_nom, 1 - yps_liq_nom}	Relative volume of liquid phase [1] and vapour phase [2] at nominal point
Fundamental Definitions
Boolean	useHomotopy	simCenter.useHomotopy	True, if homotopy method is used during initialisation
Shell Side › Fundamental Definitions
TILMedia.VLEFluid.Types.BaseVLEFluid	medium_shell	simCenter.fluid1	Medium to be used for shell side
Shell Side › Geometry
Basics.Units.Length	length	10	Length of the HEX
Basics.Units.Length	diameter	3	Diameter of HEX
Basics.Choices.GeometryOrientation	orientation	ClaRa.Basics.Choices.GeometryOrientation.vertical	Orientation of the component
Basics.Choices.GeometryOrientation	flowOrientation	ClaRa.Basics.Choices.GeometryOrientation.vertical	Flow orientation at shell side
Basics.Units.Length	z_in_shell	length/2	Inlet position from bottom
Basics.Units.Length	z_in_aux1	length/2	Inlet position of auxilliary1 from bottom
Basics.Units.Length	z_in_aux2	length/2	Inlet position of auxilliary2 from bottom
Basics.Units.Length	z_out_shell	length/2	Outlet position from bottom
Basics.Units.Length	radius_flange	0.05	Flange radius
Integer	N_baffle	0	Number of baffles at shell side
Basics.Units.Mass	mass_struc	0	Mass of inner structure elements, additional to the tubes itself
Shell Side › Nominal Values
Basics.Units.MassFlowRate	m_flow_nom_shell	10	Nominal mass flow at shell side
Basics.Units.Pressure	p_nom_shell	10	Nominal pressure at shell side
Basics.Units.EnthalpyMassSpecific	h_nom_shell	100e3	Nominal specific enthalpy at shell side
Real	yps_liq_nom	0.5	Relative volume of liquid phase at nominal point
Shell Side › Initialisation
Basics.Units.EnthalpyMassSpecific	h_liq_start	-10 + TILMedia.VLEFluid.MixtureCompatible.Functions.bubbleSpecificEnthalpy_pxi(medium_shell, p_start_shell)	Start value of liquid specific enthalpy
Basics.Units.EnthalpyMassSpecific	h_vap_start	+10 + TILMedia.VLEFluid.MixtureCompatible.Functions.dewSpecificEnthalpy_pxi(medium_shell, p_start_shell)	Start value of vapour specific enthalpy
Basics.Units.Pressure	p_start_shell	1e5	Start value of shell fluid pressure
Real	level_rel_start	0.5	Start value for relative filling Level
Integer	initOptionShell	211	Type of initialisation
Tubes › Fundamental Definitions
TILMedia.VLEFluid.Types.BaseVLEFluid	medium_tubes	simCenter.fluid1	Medium to be used for tubes
Tubes › Geometry
ClaRa.Basics.Units.Length	diameter_i	0.048	Inner diameter of horizontal tubes
ClaRa.Basics.Units.Length	diameter_o	0.05	Outer diameter of horizontal tubes
ClaRa.Basics.Units.Length	length_tubes	10	Length of the tubes (one pass)
Integer	N_tubes	1000	Number of horizontal tubes
Integer	N_passes	1	Number of passes of the internal tubes
ClaRa.Basics.Units.Length	z_in_tubes	length/2	Inlet position from bottom
ClaRa.Basics.Units.Length	z_out_tubes	length/2	Outlet position from bottom
Boolean	staggeredAlignment	true	True, if the tubes are aligned staggeredly
ClaRa.Basics.Units.Length	Delta_z_par	2*diameter_o	Distance between tubes parallel to flow direction (center to center)
ClaRa.Basics.Units.Length	Delta_z_ort	2*diameter_o	Distance between tubes orthogonal to flow direction (center to center)
Integer	N_rows	integer(ceil(sqrt(N_tubes))*N_passes)	Number of pipe rows in shell flow direction
Real	CF_geo	1	Correction coefficient due to fins etc.
Tubes › Nominal Values
ClaRa.Basics.Units.MassFlowRate	m_flow_nom_tubes	10	Nominal mass flow on tube side
ClaRa.Basics.Units.Pressure	p_nom_tubes	10	Nominal pressure on tube side
ClaRa.Basics.Units.EnthalpyMassSpecific	h_nom_tubes	10	Nominal specific enthalpy on tube side
ClaRa.Basics.Units.HeatFlowRate	Q_flow_nom	1e6	Nominal heat flow rate
Tubes › Initialisation
ClaRa.Basics.Units.EnthalpyMassSpecific	h_start_tubes	1e5	Start value of tube fluid specific enthalpy
ClaRa.Basics.Units.Pressure	p_start_tubes	1e5	Start value of tube fluid pressure
Integer	initOptionTubes	0	Type of initialisation at tube side
Tube Wall › Initialisation
ClaRa.Basics.Units.Temperature[3]	T_w_start	ones(3)*293.15	Initial temperature at outer phase
Integer	initOptionWall	213	Init Option of Wall
Expert Settings › Zone Interaction at Shell Side
ClaRa.Basics.Units.Time	Tau_cond	0.3	Time constant of condensation
ClaRa.Basics.Units.Time	Tau_evap	0.03	Time constant of evaporation
ClaRa.Basics.Units.CoefficientOfHeatTransfer	alpha_ph	50000	HTC of the phase border
ClaRa.Basics.Units.Area	A_phaseBorder	shell.geo.A_hor*100	Heat transfer area at phase border
Real	expHT_phases	0	Exponent for volume dependency on inter phase HT
Real	absorbInflow	1	Absorption of incoming mass flow to the zones 1: perfect in the allocated zone, 0: perfect according to steam quality
Boolean	equalPressures	true	True if pressure in liquid and vapour phase is equal
Expert Settings › Mass Accumulation at Shell Side
Modelica.Blocks.Types.Smoothness	smoothness	Modelica.Blocks.Types.Smoothness.LinearSegments	Smoothness of level calculation (table based)
Summary and Visualisation
Boolean	showExpertSummary	simCenter.showExpertSummary	True, if expert summary should be applied
Boolean	showData	true	True, if a data port containing p,T,h,s,m_flow shall be shown, else false
Boolean	levelOutput	false	True, if Real level connector shall be addded
Boolean	outputAbs	false	True, if absolute level is at output

Connectors

Type	Name	Default
ClaRa.Basics.Interfaces.FluidPortIn	In2
ClaRa.Basics.Interfaces.FluidPortOut	Out2
ClaRa.Basics.Interfaces.FluidPortOut	Out1
ClaRa.Basics.Interfaces.FluidPortIn	In1
ClaRa.Basics.Interfaces.FluidPortIn	aux1
ClaRa.Basics.Interfaces.FluidPortIn	aux2
ClaRa.Basics.Interfaces.EyeOut	eye2
ClaRa.Basics.Interfaces.EyeOut	eye1
Modelica.Blocks.Interfaces.RealOutput	level	if outputAbs then shell.summary.outline.level_abs else shell.summary.outline.level_rel

Components

Type	Name	Default	Description
String	complexity (from ComplexityLevel)	"??"
ClaRa.SimCenter	simCenter
ClaRa.Components.Adapters.Scalar2VectorHeatPort	reallocateHeatFlows
ClaRa.Basics.ControlVolumes.FluidVolumes.VolumeVLE_L2	tubes
ClaRa.Basics.ControlVolumes.FluidVolumes.VolumeVLE_L3_TwoZonesNPort	shell
ClaRa.Basics.ControlVolumes.SolidVolumes.CylindricalThickWall_L4	wall		{shell.heattransfer.alpha[2],shell.heattransfer.alpha[2],shell.heattransfer.alpha[1]}
Summary	summary

Name	Description
Outline
Summary
HeatTransfer_Shell
PressureLossShell
HeatTransferTubes
PressureLossTubes
WallMaterial

Revisions

For revisions please consult the html-documentation shipped with ClaRa.