modelHopper_L2

Model for a hopper section of a combustion chamber
Diagram of Hopper_L2

Extends from ClaRa.Basics.Icons.Hopper, ClaRa.Components.Furnace.BaseClasses.HopperBase.

Information

Model description: A nonstationary model for the hopper furnace section

FEATURES

  • This model uses TILMedia
  • Nonstationary mass and energy balances are used
  • Different heat transfer correlations can be chosen

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

TypeNameDefaultDescription
RealT_0 (from HopperBase)298.15Reference temperature
Media Definitions
ClaRa.Basics.Media.FuelTypes.BaseFuelfuelModel (from HopperBase)simCenter.fuelModel1Fuel elemental composition used for combustion
ClaRa.Basics.Media.Slag.PartialSlagslagType (from HopperBase)simCenter.slagModelSlag properties
TILMedia.Gas.Types.BaseGasflueGas (from HopperBase)simCenter.flueGasModelFlue gas model used in component
Combustion Settings › Slag temperature definitions
IntegerslagTemperature_calculationType (from HopperBase)1Calculation type of outflowing slag temperature
ClaRa.Basics.Units.TemperatureT_slag (from HopperBase)900Constant slag outlet temperature
Nominal Values
ClaRa.Basics.Units.MassFlowRatem_flow_nom (from HopperBase)10Nominal mass flow rates at inlet
Initialisation
ClaRa.Basics.Units.Pressurep_start_flueGas_out (from HopperBase)1e5Start pressure at outlet
ClaRa.Basics.Units.TemperatureT_start_flueGas_out (from HopperBase)700Start temperature at outlet
ClaRa.Basics.Units.TemperatureT_top_initial (from HopperBase)T_start_flueGas_outInitial temperature of top volume
ClaRa.Basics.Units.MassFraction[flueGas.nc - 1]xi_start_flueGas_out (from HopperBase){0.01, 0, 0.1, 0, 0.74, 0.13, 0, 0.02, 0}Start composition of flue gas
ClaRa.Basics.Units.EnthalpyMassSpecifich_start (from HopperBase)TILMedia.Gas.Functions.specificEnthalpy_pTxi(flueGas, p_start_flueGas_out, T_start_flueGas_out, xi_start_flueGas_out)Start flue gas enthalpy
BooleanuseHomotopysimCenter.useHomotopyTrue, if homotopy method is used during initialisation
Expert Settings
ClaRa.Basics.Units.TimeTau (from HopperBase)0.01Time constant for heat transfer temperature delay
Summary and Visualisation
BooleanshowData (from HopperBase)falseTrue, if characteristic data shall be visualised in model icon

Connectors

TypeNameDefaultDescription
ClaRa.Basics.Interfaces.FuelSlagFlueGas_inletinlet (from HopperBase)
ClaRa.Basics.Interfaces.FuelSlagFlueGas_outletoutlet (from HopperBase)
ClaRa.Basics.Interfaces.HeatPort_aheat_wall (from HopperBase)
ClaRa.Basics.Interfaces.HeatPort_aheat_top (from HopperBase)
ClaRa.Basics.Interfaces.HeatPort_aheat_bottom (from HopperBase)
Basics.Interfaces.EyeOutGaseyeOut (from HopperBase)

Components

TypeNameDefaultDescription
ClaRa.SimCentersimCenter (from HopperBase)
ClaRa.Basics.Units.MassFraction[flueGas.nc - 1]xi_flueGas (from HopperBase)Flue gas composition
ClaRa.Basics.Units.AreaA_cross (from HopperBase)geo.A_frontCross section
ClaRa.Basics.Units.VolumeFlowRateV_flow_flueGas_in (from HopperBase)Inlet volume flow
ClaRa.Basics.Units.VolumeFlowRateV_flow_flueGas_out (from HopperBase)Outlet volume flow
ClaRa.Basics.Units.Massmass (from HopperBase)Gas mass
ClaRa.Basics.Units.HeatFlowRateQ_flow_top (from HopperBase)Heat flow from top section
ClaRa.Basics.Units.HeatFlowRateQ_flow_bottom (from HopperBase)Heat flow from bottom section
ClaRa.Basics.Units.HeatFlowRateQ_flow_wall (from HopperBase)Heat flow from walls
ClaRa.Basics.Units.EnthalpyMassSpecifich_flueGas_out (from HopperBase)Gas outlet specific enthalpy
ClaRa.Basics.Units.EnthalpyMassSpecifich_flueGas_out_del (from HopperBase)Gas outlet specific enthalpy - delayed
Geometrygeo (from HopperBase)
HeatTransfer_Wallheattransfer_wall (from HopperBase)
HeatTransfer_Topheattransfer_top (from HopperBase)
RadiationTimeConstantradiationTimeConstant (from HopperBase)
Realsum_xiSum of inlet components
RealdrhodtDensity derivative
ClaRa.Basics.Units.MassFraction[flueGas.nc - 1]xi_flueGas_in_delFlue gas mixture composition
ClaRa.Basics.Units.MassFlowRatem_flow_in_delPseudo state for inlet mass flow
ClaRa.Basics.Units.MassFlowRatem_flow_out_delPseudo state for outlet mass flow
ClaRa.Basics.Units.TemperatureT_bulk_delPseudo state for bulk temperature
ClaRa.Basics.Units.DensityMassSpecificrho_bulk_delPseudo state for bulk density
Summarysummary
TILMedia.Gas.Gas_phbulk

Contents

NameDescription
Outline
Fuel
Slag
Flow
Summary

Revisions

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