modelHEXvle2gas_L3_2ph_BU_simple
VLE 2 gas | L3 | 1 phase on each side | Block shape | U-type |
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:
DYNCAP/DYNSTART development team, Copyright © 2011-2024.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 |
|---|---|---|---|
| ClaRa.Basics.Units.MassFraction[medium1.nc - 1] | xi_shell_start | medium1.xi_default | |Shell Side|Initialisation|Start value of shell mass fraction |
| Real[2] | yps_nom | {yps_liq_nom, 1 - yps_liq_nom} | Relative volume of liquid phase [1] and vapour phase [2] at nominal point |
| Shell Side › Fundamental Definitions | |||
| TILMedia.Gas.Types.BaseGas | medium1 | simCenter.flueGasModel | Medium to be used for gas flow |
| Fundamental Definitions | |||
| Boolean | useHomotopy | simCenter.useHomotopy | True, if homotopy method is used during initialisation |
| Shell Side › Geometry | |||
| ClaRa.Basics.Units.Length | length | 10 | Length of the HEX |
| ClaRa.Basics.Units.Length | height | 3 | Height of HEX |
| ClaRa.Basics.Units.Length | width | 3 | Width of HEX |
| ClaRa.Basics.Units.Length | z_in_shell | height | Inlet position from bottom |
| ClaRa.Basics.Units.Length | z_out_shell | 0.1 | Outlet position from bottom |
| Basics.Choices.GeometryOrientation | flowOrientation | ClaRa.Basics.Choices.GeometryOrientation.vertical | Orientation of shell side flow |
| ClaRa.Basics.Units.Mass | mass_struc | 0 | Mass of inner structure elements, additional to the tubes itself |
| Shell Side › Nominal Values | |||
| ClaRa.Basics.Units.MassFlowRate | m_nom1 | 10 | Nominal mass flow on shell side |
| ClaRa.Basics.Units.Pressure | p_nom1 | 10 | Nominal pressure on shell side |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_nom1 | 10 | Nominal specific enthalpy on shell side |
| Shell Side › Initialisation | |||
| ClaRa.Basics.Units.Temperature | T_start_shell | 273.15 + 100 | Start value of system Temperature |
| ClaRa.Basics.Units.Pressure | p_start_shell | 1e5 | Start value of sytsem pressure |
| Integer | initOptionShell | 0 | Type of shell initialisation |
| Tubes › Fundamental Definitions | |||
| TILMedia.VLEFluid.Types.BaseVLEFluid | medium2 | simCenter.fluid1 | Medium to be used for water/steam flow |
| 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 |
| Integer | N_tubes | 1000 | Number of horizontal tubes |
| Integer | N_passes | 1 | Number of passes of the internal tubes |
| Boolean | parallelTubes | false | True, if tubes are parallel to shell flow orientation |
| 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 |
| Basics.Units.Length | height_hotwell | 1 | Height of the hotwell |
| Basics.Units.Length | width_hotwell | 1 | Width of the hotwell |
| Basics.Units.Length | length_hotwell | 1 | Length of the hotwell |
| Boolean | staggeredAlignment | true | True, if the tubes are aligned staggeredly |
| Basics.Units.Length | Delta_z_par | 1.5*diameter_o | Distance between tubes parallel to flow direction |
| Basics.Units.Length | Delta_z_ort | 1.5*diameter_o | Distance between tubes orthogonal to flow direction |
| Integer | N_rows | integer(ceil(sqrt(N_tubes))*N_passes) | Number of pipe rows in shell flow direction (minimum = N_passes) |
| Real | CF_geo | 1 | Correction coefficient of heat transfer area |
| Tubes › Nominal Values | |||
| ClaRa.Basics.Units.MassFlowRate | m_nom2 | 10 | Nominal mass flow on side 2 |
| ClaRa.Basics.Units.Pressure | p_nom2 | 10 | Nominal pressure on side 2 |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_nom2 | 10 | Nominal specific enthalpy on side 2 |
| ClaRa.Basics.Units.HeatFlowRate | Q_flow_nom | 1e6 | Nominal heat flow rate |
| Real | yps_liq_nom | level_rel_start | Relative volume of liquid phase at nominal point |
| Tubes › Initialisation | |||
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_liq_start | -10 + TILMedia.VLEFluid.MixtureCompatible.Functions.bubbleSpecificEnthalpy_pxi(medium2, p_start_tubes) | Start value of liquid specific enthalpy |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vap_start | +10 + TILMedia.VLEFluid.MixtureCompatible.Functions.dewSpecificEnthalpy_pxi(medium2, p_start_tubes) | Start value of vapour specific enthalpy |
| ClaRa.Basics.Units.Pressure | p_start_tubes | 1e5 | Start value of sytsem pressure |
| Real | level_rel_start | 0.5 | Start value for relative filling Level |
| Integer | initOptionTubes | 0 | Type of initialisation |
| Tube Wall › Initialisation | |||
| Integer | initOptionWall | 213 | Init Option of Wall |
| Basics.Units.Temperature | T_w_i_start | 293.15 | Initial wall temperature at inner phase |
| Basics.Units.Temperature | T_w_a_start | 293.15 | Initial wall temperature at outer phase |
| Expert Settings › Zone Interaction at Shell Side | |||
| Basics.Units.Time | Tau_cond | 0.3 | Time constant of condensation |
| Basics.Units.Time | Tau_evap | 0.03 | Time constant of evaporation |
| Basics.Units.CoefficientOfHeatTransfer | alpha_ph | 50000 | HTC of the phase border |
| 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 |
| 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 | Description |
|---|---|---|---|
| ClaRa.Basics.Interfaces.FluidPortIn | In2 | ||
| ClaRa.Basics.Interfaces.FluidPortOut | Out2 | ||
| ClaRa.Basics.Interfaces.GasPortIn | In1 | ||
| ClaRa.Basics.Interfaces.GasPortOut | Out1 | Outlet port | |
| Basics.Interfaces.EyeOut | eye | ||
| Modelica.Blocks.Interfaces.RealOutput | level_abs_ | tubes.summary.outline.level_abs | |
| Modelica.Blocks.Interfaces.RealOutput | level_rel_ | tubes.phaseBorder.level_rel | |
| Modelica.Blocks.Interfaces.RealOutput | level |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| String | complexity (from ComplexityLevel) | "??" | |
| ClaRa.SimCenter | simCenter | ||
| Basics.ControlVolumes.FluidVolumes.VolumeVLE_L3_TwoZones | tubes | ||
| Basics.ControlVolumes.GasVolumes.VolumeGas_L2 | shell | ||
| Summary | summary | ||
| Basics.ControlVolumes.SolidVolumes.CylindricalThickWall_L4 | wall |
Contents
| Name | Description |
|---|---|
 Outline | |
 Summary | |
 HeatTransfer_Shell | |
 PressureLossShell | |
| HeatTransferTubes | |
| PressureLossTubes | |
 WallMaterial |
Revisions
For revisions please consult the html-documentation shipped with ClaRa.