modelFlameRoom2
Fixed fluid outlet temperature | blue | green || brown | brown
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 |
|---|---|---|---|
| Integer | N_cv_bundle | size(Delta_x_bundle, 1) | Number of finite volumes in tube bundle |
| Integer | N_cv_wall | size(Delta_x_wall, 1) | Number of finite volumes in wall |
| ClaRa.Basics.Units.HeatFlowRate | Q_flow_bundle | m_flow_vle_bundle*(h_vle_bundle_out - h_vle_bundle_in) | Actual heat flow rate |
| ClaRa.Basics.Units.HeatFlowRate | Q_flow_wall | m_flow_vle_wall_in*(h_vle_wall_out - h_vle_wall_in) | Actual heat flow rate to evaporator |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_bub_bundle | TILMedia.VLEFluid.MixtureCompatible.Functions.bubbleSpecificEnthalpy_pxi(vleMedium, p_vle_bundle_out) | |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_dew_bundle | TILMedia.VLEFluid.MixtureCompatible.Functions.dewSpecificEnthalpy_pxi(vleMedium, p_vle_bundle_out) | |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_bub_wall | TILMedia.VLEFluid.MixtureCompatible.Functions.bubbleSpecificEnthalpy_pxi(vleMedium, p_vle_wall_out) | |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_dew_wall | TILMedia.VLEFluid.MixtureCompatible.Functions.dewSpecificEnthalpy_pxi(vleMedium, p_vle_wall_out) | |
| ClaRa.Basics.Units.MassFlowRate | m_flow_vle_bundle | mass flow rate at tube bundle | |
| ClaRa.Basics.Units.Pressure | Delta_p_vle_bundle | Pressure loss at tube bundle | |
| ClaRa.Basics.Units.Pressure | Delta_p_vle_wall | Pressure loss at wall HEX | |
| ClaRa.Basics.Units.MassFlowRate | m_flow_fg | Mass flow rate flue gas | |
| ClaRa.Basics.Units.TemperatureDifference | Delta_T_U_bundle | ClaRa.Basics.Functions.maxAbs(T_fg_in - T_vle_bundle_out, T_fg_out - T_vle_bundle_in, 0.1) | Rprt: Upper temperatre difference |
| ClaRa.Basics.Units.TemperatureDifference | Delta_T_L_bundle | ClaRa.Basics.Functions.minAbs(T_fg_in - T_vle_bundle_out, T_fg_out - T_vle_bundle_in, 0.1) | Rprt: Lowert temperature difference |
| ClaRa.Basics.Units.TemperatureDifference | Delta_T_mean_bundle | SM(0.1, eps, abs(Delta_T_L_bundle))*SM(0.01, eps, Delta_T_U_bundle*Delta_T_L_bundle)*SZT((Delta_T_U_bundle - Delta_T_L_bundle)/log(abs(Delta_T_U_bundle)/(abs(Delta_T_L_bundle) + 1e-9)), Delta_T_L_bundle, (abs(Delta_T_U_bundle) - abs(Delta_T_L_bundle)) - 0.01, 0.001) | Rprt: Logarithmic temperature difference |
| Real | kA | Q_flow_bundle/(1e-5 + Delta_T_mean_bundle) | Rprt: Heat Flow Resistance of tube bundle |
| ClaRa.Basics.Units.TemperatureDifference | Delta_T_U_wall | ClaRa.Basics.Functions.maxAbs(T_fg_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_wall | ClaRa.Basics.Functions.minAbs(T_fg_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_wall | SM(0.1, eps, abs(Delta_T_L_wall))*SM(0.01, eps, Delta_T_U_wall*Delta_T_L_wall)*SZT((Delta_T_U_wall - Delta_T_L_wall)/log(abs(Delta_T_U_wall)/(abs(Delta_T_L_wall) + 1e-9)), Delta_T_L_wall, (abs(Delta_T_U_wall) - abs(Delta_T_L_wall)) - 0.01, 0.001) | Rprt: Logarithmic temperature difference |
| Real | kA_wall | Q_flow_wall/(1e-5 + Delta_T_mean_wall) | Rprt: Heat Flow Resistance of wall |
| ClaRa.Basics.Units.Pressure[N_cv_bundle] | p_bundle | ClaRa.Basics.Functions.pressureInterpolation(p_vle_bundle_in, p_vle_bundle_out, Delta_x_bundle, frictionAtInlet_bundle, frictionAtOutlet_bundle) | Rprt: Discretisised pressure at tube bundle |
| 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.MassFraction | xi | zeros(vleMedium.nc - 1) | VLE composition in component, pure fluids supported only! |
| ClaRa.Basics.Units.Pressure | Delta_p_geo_wall | TILMedia.VLEFluid.MixtureCompatible.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 | Delta_p_geo_bundle | TILMedia.VLEFluid.MixtureCompatible.Functions.density_phxi(vleMedium, p_vle_bundle_out, h_vle_bundle_out, xi)*Modelica.Constants.g_n*(z_bundle_in - z_bundle_out) | Geostatic pressure difference |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_bundle_in | VLE medium's inlet specific enthalpy | |
| ClaRa.Basics.Units.Temperature | T_vle_bundle_in | TILMedia.VLEFluid.MixtureCompatible.Functions.temperature_phxi(vleMedium, p_vle_bundle_in, h_vle_bundle_in) | Rprt: tube bundle inlet temperature |
| ClaRa.Basics.Units.Pressure | p_vle_bundle_in | p_vle_bundle_out + Delta_p_vle_bundle - Delta_p_geo_bundle | Tube bundle inlet pressure |
| ClaRa.Basics.Units.MassFlowRate | m_flow_vle_bundle_in | m_flow_vle_bundle | Tube bundle inlet mass flow |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_bundle_out | TILMedia.VLEFluid.MixtureCompatible.Functions.specificEnthalpy_pTxi(vleMedium, p_vle_bundle_out, T_vle_bundle_out_nom) | Tube bundle outlet specific enthalpy |
| ClaRa.Basics.Units.Temperature | T_vle_bundle_out | Tube bundle outlet temperature | |
| ClaRa.Basics.Units.Pressure | p_vle_bundle_out | P_target_*p_vle_bundle_out_nom | Tube bundle outlet pressure |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_wall_in | Wall inlet specific enthalpy | |
| ClaRa.Basics.Units.Temperature | T_vle_wall_in | TILMedia.VLEFluid.MixtureCompatible.Functions.temperature_phxi(vleMedium, p_vle_wall_in, h_vle_wall_in) | Rprt: wall inlet temperature |
| ClaRa.Basics.Units.Pressure | p_vle_wall_in | p_vle_wall_out + Delta_p_vle_wall + Delta_p_geo_wall | Wall inlet pressure |
| ClaRa.Basics.Units.MassFlowRate | m_flow_vle_wall_in | Wall inlet mass flow | |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_wall_out | Outlet specific enthalpy | |
| ClaRa.Basics.Units.Temperature | T_vle_wall_out | TILMedia.VLEFluid.MixtureCompatible.Functions.temperature_phxi(vleMedium, p_vle_wall_out, h_vle_wall_out) | Wall outlet temperature |
| ClaRa.Basics.Units.Pressure | p_vle_wall_out | Wall outlet pressure | |
| ClaRa.Basics.Units.MassFlowRate | m_flow_vle_wall_out | m_flow_vle_wall_in | Wall inlet mass flow |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_fg_in | (m_flow_fg*h_fg_out - m_flow_vle_bundle_in*h_vle_bundle_in + m_flow_vle_bundle_in*h_vle_bundle_out - m_flow_vle_wall_in*h_vle_wall_in + m_flow_vle_wall_in*h_vle_wall_out)/m_flow_fg | FG medium's inlet specific enthalpy flue gas |
| ClaRa.Basics.Units.Temperature | T_fg_in | TILMedia.Gas.Functions.temperature_phxi(flueGas, p_fg_in, h_fg_in, xi_fg_in) | FG inlet temperature |
| ClaRa.Basics.Units.MassFraction[inletGas.flueGas.nc - 1] | xi_fg_in | FG medium's inlet composition | |
| ClaRa.Basics.Units.Pressure | p_fg_in | p_fg_out | FG medium's inlet pressure |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_fg_out | TILMedia.Gas.Functions.specificEnthalpy_pTxi(flueGas, p_fg_out, T_fg_out, xi_fg_out) | FG medium's outlet specific enthalpy |
| ClaRa.Basics.Units.Temperature | T_fg_out | FG medium's outlet temperature | |
| ClaRa.Basics.Units.MassFraction[outletGas.flueGas.nc - 1] | xi_fg_out | xi_fg_in | FG medium's outlet composition |
| ClaRa.Basics.Units.Pressure | p_fg_out | FG medium's outlet pressure | |
| ClaRa.Basics.Units.Temperature | T_wall_wall | ((T_fg_out + T_fg_in)/2 + (T_vle_wall_in + T_vle_wall_out)/2)/2 | Wall temperature of wall tubes |
| ClaRa.Basics.Units.Temperature | T_wall_bundle | ((T_fg_out + T_fg_in)/2 + (T_vle_bundle_in + T_vle_bundle_out)/2)/2 | Wall temperature of bundle tubes |
| 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_T_bundle_P_target_ | [0, 1; 1, 1] | Characteristic line of T_vle_bundle_out as function of P_target_ |
| Real[:,2] | CharLine_h_wall_P_target_ | [0, 1; 1, 1] | Characteristic line of h_vle_wall_out as function of P_target_ |
| Fundamental Definitions | |||
| TILMedia.VLEFluid.Types.BaseVLEFluid | vleMedium | simCenter.fluid1 | vleMedium in the component |
| TILMedia.Gas.Types.BaseGas | flueGas | simCenter.flueGasModel | Flue gas model used in component |
| 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 |
| ClaRa.Basics.Units.Length | z_bundle_in | 0.0 | Geodetic height at inlet of tube bundle |
| ClaRa.Basics.Units.Length | z_bundle_out | 0.0 | Geodetic height at outlet of tube bundle |
| Nominal Operation Point | |||
| ClaRa.Basics.Units.Temperature | T_vle_bundle_out_nom | Heated fluid temperature at nominal load | |
| ClaRa.Basics.Units.EnthalpyMassSpecific | h_vle_wall_out_nom | Nominal vle wall outlet spec. enthalpy | |
| ClaRa.Basics.Units.Pressure | Delta_p_vle_bundle_nom | Heated fluid pressure loss at nominal load | |
| ClaRa.Basics.Units.Pressure | Delta_p_vle_wall_nom | Heated fluid pressure loss at nominal load inside casing walls | |
| ClaRa.Basics.Units.Pressure | p_vle_bundle_out_nom | Heated fluid pressure at nominal load | |
| Discretisation (for reporting only) | |||
| ClaRa.Basics.Units.Length[:] | Delta_x_bundle | ClaRa.Basics.Functions.GenerateGrid({0}, 10, 3) | Discretisation scheme - tube bundle side |
| Boolean | frictionAtInlet_bundle | false | True if pressure loss between first cell and inlet shall be considered - tube bundle side |
| Boolean | frictionAtOutlet_bundle | false | True if pressure loss between last cell and outlet shall be considered - tube bundle side |
| 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 |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.StaticCycles.Fundamentals.SteamSignal_blue_a | inletBundle | ||
| ClaRa.StaticCycles.Fundamentals.SteamSignal_green_b | outletBundle | ||
| ClaRa.StaticCycles.Fundamentals.FlueGasSignal_brown_b | outletGas | ||
| ClaRa.StaticCycles.Fundamentals.FlueGasSignal_brown_a | inletGas | ||
| ClaRa.StaticCycles.Fundamentals.SteamSignal_blue_a | inletWall | ||
| ClaRa.StaticCycles.Fundamentals.SteamSignal_blue_b | outletWall |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.SimCenter | simCenter | ||
| Summary | summary |
Contents
| Name | Description |
|---|---|
 Summary |
Revisions
For revisions please consult the html-documentation shipped with ClaRa.