modelFlameRoom_L2_Dynamic
Model for a flame room section inside a combustion chamber
Extends from ClaRa_Obsolete.Components.Furnace.BaseClasses.CombustionChamberBase, ClaRa.Basics.Icons.FlameRoom, ClaRa_Obsolete.Basics.Icons.Obsolete_v1_3 (This model will be not longer supported than Version 1.5!).
Information
Model description: A stationary flame room model for fuel fired furnaces
Contact: Lasse Nielsen, TLK-Thermo GmbH
FEATURES
- This model uses TILMedia
- Stationary mass and energy balances are used
- The formation enthalpy of the used fuel is calculated with the given Lower heating value and and ideal combustion with the given elemental composition of the fuel
- Lower heating can be regarded with a fixed value or calculated according to the "Verbandsformel"
- Different heat transfer correlations can be chosen
- Capable to burn unburnt fuel from lower burner sections
- Amount of burnable fuel mass is calculated with particle diffusity which depends on models used to determine the mean migration speed according to the volume flow rates of the flue gas
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | T_0 (from CombustionChamberBase) | 298.15 | Reference temperature |
| Media Definitions | |||
| ClaRa.Basics.Media.Fuel.PartialFuel | fuelType (from CombustionChamberBase) | simCenter.fuelModel1 | Fuel elemental composition used for combustion |
| ClaRa.Basics.Media.Slag.PartialSlag | slagType (from CombustionChamberBase) | simCenter.slagModel | Slag properties |
| TILMedia.Gas.Types.BaseGas | flueGas (from CombustionChamberBase) | simCenter.flueGasModel | Flue gas model used in component |
| Slag temperature definitions | |||
| Integer | slagTemperature_calculationType (from CombustionChamberBase) | 1 | Calculation type of outflowing slag temperature |
| ClaRa.Basics.Units.Temperature | T_slag (from CombustionChamberBase) | 900 | Constant slag outlet temperature |
| Heat Transfer | |||
| Modelica.Units.SI.Time | Tau_rad (from CombustionChamberBase) | 0.1 | Radiation time constant |
| Nominal Values | |||
| Modelica.Units.SI.MassFlowRate | m_flow_nom (from CombustionChamberBase) | 10 | Nominal mass flow rates at inlet |
| Initialisation | |||
| ClaRa.Basics.Units.Pressure | p_start_flueGas_out (from CombustionChamberBase) | 1e5 | Start pressure at outlet |
| ClaRa.Basics.Units.Temperature | T_start_flueGas_out (from CombustionChamberBase) | 700 | Start temperature at outlet |
| Modelica.Units.SI.Temperature | T_top_initial (from CombustionChamberBase) | T_start_flueGas_out | Initial temperature of top volume |
| ClaRa.Basics.Units.MassFraction[flueGas.nc - 1] | xi_start_flueGas_out (from CombustionChamberBase) | {0.01, 0, 0.1, 0, 0.74, 0.13, 0, 0.02, 0} | Start composition of flue gas |
| ClaRa.Basics.Units.VolumeFlowRate | V_flow_flueGas_out_start (from CombustionChamberBase) | -15 | Start volume flow at outlet |
| Modelica.Units.SI.SpecificEnthalpy | h_start (from CombustionChamberBase) | TILMedia.Gas.Functions.specificEnthalpy_pTxi(flueGas, p_start_flueGas_out, T_start_flueGas_out, xi_start_flueGas_out) | Start flue gas enthalpy |
| Boolean | useHomotopy | simCenter.useHomotopy | True, if homotopy method is used during initialisation |
| Expert Settings | |||
| ClaRa.Basics.Units.Time | Tau (from CombustionChamberBase) | 0.001 | Time constant for heat transfer temperature delay |
| Summary and Visualisation | |||
| Boolean | showData (from CombustionChamberBase) | false | True, if characteristic data shall be visualised in model icon |