modelFlatTubeFinnedHEXvle2gas_L4

VLE 2 Gas | L4 | FlatTubeFinnedHEX
Diagram of FlatTubeFinnedHEXvle2gas_L4

Extends from ClaRa.Basics.Icons.HEX01FlatTubeFinnedDiscretized.

Information

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

 


Authorship and Copyright Statement for original (initial) Contribution

Author:

ClaRa development team, Copyright © 2017 - 2022.

References:

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

Remarks:

This component was developed for ClaRa library.

Acknowledgements:

CLA:

Parameters

TypeNameDefaultDescription
BooleanshowExpertSummarysimCenter.showExpertSummary|Summary and Visualisation||True, if expert summary should be applied
BooleanshowDatatrue|Summary and Visualisation||True, if a data port containing p,T,h,s,m_flow shall be shown, else false
General › Fundamental Definitions
TILMedia.VLEFluid.Types.BaseVLEFluidmedium_asimCenter.fluid1Medium to be used for flow 1
TILMedia.Gas.Types.BaseGasmedium_bsimCenter.flueGasModelMedium to be used for flow 2
IntegerHeatExchangerType0Type of Heat Exchanger
General › Geometry
BooleanequalNumberOfPassestrueTrue, if number of pasees for both flows are equal
IntegerN_passes1Number of passes of tubes (N_passes_a). If equalNumberOfPasses=true then N_passes_b = N_passes else N_passes_b=1.
IntegerN_passes_aN_passesNumber of passes for flow_a
IntegerN_passes_bif equalNumberOfPasses then N_passes else 1Number of passes for flow_b
IntegerN_cv_a3Number of cells for flow_a
IntegerN_cv_b3Number of cells for flow_b
IntegerN_tubes1Number of tubes in parallel (one pass)
ClaRa.Basics.Units.Lengthwidth1Width of HX (length of flat tube)
ClaRa.Basics.Units.Lengthlength1Length of HX (width of flat tube)
ClaRa.Basics.Units.Lengthheigth1Heigth of HX
ClaRa.Basics.Units.Lengthz_in_aheigth/2Inlet position from bottom for flow_a
ClaRa.Basics.Units.Lengthz_out_aheigth/2Outlet position from bottom for flow_a
ClaRa.Basics.Units.Lengthz_in_bheigth/2Inlet position from bottom for flow_b
ClaRa.Basics.Units.Lengthz_out_bheigth/2Outlet position from bottom for flow_b
Real[2]CF_geoones(2)Correction factor for heat transfer area dedicated to surfuca of: 1|flow_a 2|flow_b
General › Tube and Fin Side Geometry
ClaRa.Basics.Units.Lengththickness_tubeWall0.01Wall thickness of the plate
ClaRa.Basics.Units.Lengthdiameter_t0.01Outer diameter of the flat tube
ClaRa.Basics.Units.Lengthh_f0.01Fin heigth
ClaRa.Basics.Units.Lengths_f0.002Fin thickness
ClaRa.Basics.Units.Lengtht_f0.001Fin spacing
ClaRa.Basics.Units.Lengthl_l0.8*h_fLength of one louver
ClaRa.Basics.Units.Lengtht_l0.001Louver spacing
RealPhi25Louver angle
IntegerflowOrientationif HeatExchangerType == 2 then 0 else 1Flow orientation of flow_b
Flow_a › Fundamental Definitions
BooleanfrictionAtInlet_afalseTrue if pressure loss between first cell and inlet shall be considered
BooleanfrictionAtOutlet_afalseTrue if pressure loss between last cell and outlet shall be considered
Flow_a › Nominal Values Flow_a
SI.MassFlowRatem_nom_a1Nominal mass flow on A side
SI.Pressure[N_cv_a]p_nom_a1e5*ones(N_cv_a)Nominal pressure on A side
SI.EnthalpyMassSpecific[N_cv_a]h_nom_a85e3*ones(N_cv_a)Nominal specific enthalpy on A side
SI.PressureDelta_p_nom_a1000Nominal pressure loss on A side
Flow_b › Nominal Values Flow_b
SI.MassFlowRatem_nom_b1Nominal mass flow on tube side
SI.Pressure[N_cv_b]p_nom_b1e5*ones(N_cv_b)Nominal pressure on tube side
SI.Temperature[N_cv_b]T_nom_b293.15*ones(N_cv_b)Nominal specific enthalpy on tube side
SI.MassFraction[medium_b.nc - 1]xi_nom_bmedium_b.xi_default
SI.PressureDelta_p_nom_b1000Nominal pressure loss on tube side
Flow_b › Fundamental Definitions
BooleanfrictionAtInlet_bfalseTrue if pressure loss between first cell and inlet shall be considered
BooleanfrictionAtOutlet_bfalseTrue if pressure loss between last cell and outlet shall be considered
Wall › Tube wall
SI.Massmass_struc_tubeWall0Additional mass to tubeWall calculated by density*flow_b.geo.length_plate*flow_b.geo.h_f*flow_b.geo.N_f*s_f*N_passes
Wall › Fin wall
SI.Massmass_struc_finWall0Additional mass to finWall calculated by density*length*width*thickness_tubeWall*N_passes
Initialisation
BooleanuseHomotopysimCenter.useHomotopytrue, if homotopy method is used during initialisation
Initialisation › Flow_a
IntegerinitOption_a0Type of initialisation
SI.EnthalpyMassSpecific[N_cv_a]h_start_a85e3*ones(N_cv_a)Start value of sytsem specific enthalpy
SI.Pressure[N_cv_a]p_start_a1e5*ones(N_cv_a)Start value of sytsem pressure
SI.MassFraction[medium_a.nc - 1]xi_start_azeros(medium_a.nc - 1)Initial composition for flow_a
Initialisation › Flow_b
IntegerinitOption_b0Type of initialisation
SI.Temperature[N_cv_b]T_start_b293.15*ones(N_cv_b)Start value of system temperature
SI.Pressure[N_cv_b]p_start_b1e5*ones(N_cv_b)Start value of sytsem pressure
SI.MassFraction[medium_b.nc - 1]xi_start_bmedium_b.xi_defaultInitial composition for flow_b
Initialisation › Wall
IntegerinitOptionTubeWall0|Initialisation option for tube wall
IntegerinitOptionFinWall0|Initialisation option for finned wall
SI.Temperature[N_cv_a]T_w_tube_start293.15*ones(N_cv_a)Initial tube wall temperature
SI.Temperature[N_cv_b]T_w_fin_start293.15*ones(N_cv_b)Initial tube wall temperature

Connectors

TypeNameDefaultDescription
ClaRa.Basics.Interfaces.GasPortInIn_b
ClaRa.Basics.Interfaces.GasPortOutOut_b
ClaRa.Basics.Interfaces.FluidPortOutOut_a
ClaRa.Basics.Interfaces.FluidPortInIn_a
ClaRa.Basics.Interfaces.EyeOutGaseye2
ClaRa.Basics.Interfaces.EyeOuteye1

Components

TypeNameDefaultDescription
ClaRa.SimCentersimCenter
ClaRa.Basics.ControlVolumes.FluidVolumes.VolumeVLE_L4flow_a
ClaRa.Basics.ControlVolumes.GasVolumes.VolumeGas_L4flow_b
ClaRa.Basics.ControlVolumes.SolidVolumes.ThinPlateWall_L4tubeWall
ClaRa.Basics.ControlVolumes.SolidVolumes.ThinPlateWall_L4finWall
Summarysummary

Contents

NameDescription
Outline
Summary
HeatTransferInner_a
PressureLoss_a
HeatTransferInner_b
PressureLoss_b
TubeWallMaterial
FinWallMaterial

Revisions

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