| ClaRa.Basics.Units.HeatFlowRate | Q_flow | m_flow_vle_wall_in*(h_vle_wall_out - h_vle_wall_in) | |
| Integer | N_cv_wall | size(Delta_x_wall, 1) | Number of finite volumes in wall |
| ClaRa.Basics.Units.TemperatureDifference | Delta_T_U | ClaRa.Basics.Functions.maxAbs(T_fg_mix_in - T_vle_wall_out, T_fg_out - T_vle_wall_in, 0.1) | Rprt: Upper temperatre difference |
| ClaRa.Basics.Units.TemperatureDifference | Delta_T_L | ClaRa.Basics.Functions.minAbs(T_fg_mix_in - T_vle_wall_out, T_fg_out - T_vle_wall_in, 0.1) | Rprt: Lowert temperature difference |
| ClaRa.Basics.Units.TemperatureDifference | Delta_T_mean | SM(0.1, eps, abs(Delta_T_L))*SM(0.01, eps, Delta_T_U*Delta_T_L)*SZT((Delta_T_U - Delta_T_L)/log(abs(Delta_T_U)/(abs(Delta_T_L) + 1e-9)), Delta_T_L, (abs(Delta_T_U) - abs(Delta_T_L)) - 0.01, 0.001) | Rprt: Logarithmic temperature difference |
| Real | kA | Q_flow/(1e-5 + Delta_T_mean) | Rprt: Heat Flow Resistance |
| ClaRa.Basics.Units.Pressure[N_cv_wall] | p_wall | ClaRa.Basics.Functions.pressureInterpolation(p_vle_wall_in, p_vle_wall_out, Delta_x_wall, frictionAtInlet_wall, frictionAtOutlet_wall) | Rprt: Discretisised pressure at tube bundle |
| ClaRa.Basics.Units.Temperature | T_vle_wall_in | TILMedia.VLEFluid.Functions.temperature_phxi(vleMedium, p_vle_wall_in, h_vle_wall_in) | Rprt: VLE medium's inlet temperature |
| ClaRa.Basics.Units.Temperature | T_vle_wall_out | TILMedia.VLEFluid.Functions.temperature_phxi(vleMedium, p_vle_wall_out, h_vle_wall_out) | VLE medium's outlet temperature |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_bub | TILMedia.VLEFluid.Functions.bubbleSpecificEnthalpy_pxi(vleMedium, p_vle_wall_out) | Rprt: Bubble enthalpy at vle outlet |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_dew | TILMedia.VLEFluid.Functions.dewSpecificEnthalpy_pxi(vleMedium, p_vle_wall_out) | Rprt: Dew enthalpy at vle outlet |
| ClaRa.Basics.Units.MassFlowRate | m_flow_diff | m_flow_vle_wall_in - m_flow_vle_wall_out | Rprt: Mass flow difference |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_wall_in | | Inlet specific enthalpy heated fluid |
| ClaRa.Basics.Units.MassFlowRate | m_flow_vle_wall_in | | Inlet mass flow heated fluid |
| ClaRa.Basics.Units.MassFlowRate | m_flow_vle_wall_out | | Heated fluid outlet mass flow |
| ClaRa.Basics.Units.Pressure | p_vle_wall_out | | Heated fluid outlet pressure |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_wall_out | | Outlet specific enthalpy |
| ClaRa.Basics.Units.MassFlowRate | m_flow_fg_out | | Mass flow rate flue gas |
| ClaRa.Basics.Units.Temperature | T_fg_out | | Outlet temperature flue gas |
| ClaRa.Basics.Units.Pressure | p_fg_out | | Outlet pressure flue gas |
| ClaRa.Basics.Units.Temperature | T_fg_in | | Temperature of primary air |
| ClaRa.Basics.Units.MassFlowRate | m_flow_fg_in | | Mass flow rate primary air |
| ClaRa.Basics.Units.MassFraction[flueGas.nc - 1] | xi_fg_in | | Inlet composition flue gas |
| ClaRa.Basics.Units.MassFlowRate | m_flow_fuel | | Mass flow rate fuel |
| ClaRa.Basics.Units.EnthalpyMassSpecific | LHV | | Lower heating value of fuel |
| ClaRa.Basics.Units.MassFraction[fuelType.nc - 1] | xi_fuel | | Elemental composition of fuel |
| ClaRa.Basics.Units.Temperature | T_pa_in | | Temperature of primary air |
| ClaRa.Basics.Units.MassFraction[flueGas.nc - 1] | xi_pa_in | | Inlet composition primary air |
| Real | n_flow_C_primary | xi_fuel[1]*m_flow_fuel/ClaRa.Basics.Constants.M_C | Inlet molar flow rate fuel C |
| Real | n_flow_H_primary | xi_fuel[2]*m_flow_fuel/ClaRa.Basics.Constants.M_H | Inlet molar flow rate fuel H |
| Real | n_flow_O_primary | xi_fuel[3]*m_flow_fuel/ClaRa.Basics.Constants.M_O | Inlet molar flow rate fuel O |
| Real | n_flow_S_primary | xi_fuel[5]*m_flow_fuel/ClaRa.Basics.Constants.M_S | Inlet molar flow rate fuel S |
| Real | m_flow_oxygen_req_primary | (n_flow_C_primary + n_flow_H_primary/4.0 + n_flow_S_primary - n_flow_O_primary/2)*ClaRa.Basics.Constants.M_O*2.0 | Required oxygen for stoichiometric combustion |
| Real | lambda | m_flow_pa_in/m_flow_oxygen_req_primary*max(1e-32, xi_pa_in[6]) | Stoichiometric air ratio |
| ClaRa.Basics.Units.Pressure | Delta_p_vle | | Pressure drop heated fluid |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_fg_mix_in | (h_fg_in*m_flow_fg_in + h_pa_in*m_flow_pa_in)/(m_flow_fg_in + m_flow_pa_in) | Inlet mixed enthalpy flue gas |
| ClaRa.Basics.Units.MassFraction[flueGas.nc - 1] | xi_fg_mix_in | (xi_fg_in*m_flow_fg_in + xi_pa_in*m_flow_pa_in)/(m_flow_fg_in + m_flow_pa_in) | Inlet mixed composition flue gas |
| ClaRa.Basics.Units.Temperature | T_fg_mix_in | TILMedia.Gas.Functions.temperature_phxi(flueGas, p_fg_out, h_fg_mix_in, xi_fg_mix_in) | Inlet mixed temperature flue gas |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_fg_out | TILMedia.Gas.Functions.specificEnthalpy_pTxi(flueGas, p_fg_out, T_fg_out, xi_fg_in) | Outlet specific enthalpy flue gas |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_fg_in | TILMedia.Gas.Functions.specificEnthalpy_pTxi(flueGas, p_fg_out, T_fg_in, xi_fg_in) | Inlet specific enthalpy flue gas |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_pa_in | TILMedia.Gas.Functions.specificEnthalpy_pTxi(flueGas, p_fg_out, T_pa_in, xi_pa_in) | Inlet specific enthalpy primary air |
| ClaRa.Basics.Units.MassFraction | xi | zeros(vleMedium.nc - 1) | VLE composition in component, pure fluids supported only! |
| ClaRa.Basics.Units.Pressure | Delta_p_geo | TILMedia.VLEFluid.Functions.density_phxi(vleMedium, p_vle_wall_out, h_vle_wall_out, xi)*Modelica.Constants.g_n*(z_wall_out - z_wall_in) | Geostatic pressure difference |
| ClaRa.Basics.Units.Pressure | p_vle_wall_in | p_vle_wall_out + Delta_p_vle + Delta_p_geo | Inlet pressure |
| ClaRa.Basics.Units.MassFlowRate | m_flow_pa_in | (m_flow_fg_out - m_flow_fuel - m_flow_fg_in) | Inlet mass flow primary air |
| ClaRa.Basics.Units.MassFraction[flueGas.nc - 1] | xi_fg_out | ClaRa.Basics.Functions.InitialiseCombustionGas(xi_fuel, m_flow_fuel, ((m_flow_fg_in*xi_fg_in) + (m_flow_pa_in*xi_pa_in))/(m_flow_pa_in + m_flow_fg_in), (m_flow_pa_in + m_flow_fg_in), false) | Outlet composition flue gas |
| Fundamental Definitions |
| TILMedia.VLEFluid.Types.BaseVLEFluid | vleMedium | simCenter.fluid1 | Medium in the component |
| TILMedia.Gas.Types.BaseGas | flueGas | simCenter.flueGasModel | Flue gas model used in component |
| ClaRa.Basics.Media.Fuel.PartialFuel | fuelType | simCenter.fuelModel1 | Coal elemental composition used for combustion |
| ClaRa.Basics.Units.Length | z_wall_in | 0.0 | Geodetic height at inlet |
| ClaRa.Basics.Units.Length | z_wall_out | 0.0 | Geodetic height at outlet |
| Nominal Operation Point |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_wall_out_nom | | Outlet specific enthalpy of fluid at nominal load |
| ClaRa.Basics.Units.Pressure | Delta_p_vle_wall_nom | | Heated fluid pressure loss at nominal load |
| Discretisation (for reporting only) |
| ClaRa.Basics.Units.Length[:] | Delta_x_wall | ClaRa.Basics.Functions.GenerateGrid({0}, 10, 3) | Discretisation scheme - tube bundle side |
| Boolean | frictionAtInlet_wall | false | True if pressure loss between first cell and inlet shall be considered - tube bundle side |
| Boolean | frictionAtOutlet_wall | false | True if pressure loss between last cell and outlet shall be considered - tube bundle side |
| Part Load Definition |
| Real | P_target_ | | Target power in p.u. |
| Real[:,:] | CharLine_Delta_p_P_target_ | [0, 0; 0.1, 0.01; 0.3, 0.09; 0.5, 0.25; 0.7, 0.49; 1, 1] | Characteristic line of pressure drop as function of P_target_ |
| Real[:,2] | CharLine_h_P_target_ | [0, 1; 1, 1] | Characteristic line of h_vle_wall_out as function of P_target_ |
Summary