Cooling tower first model #472
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| within MetroscopeModelingLibrary.Examples.Nuclear.MetroscopiaNPP; | ||
| model MetroscopiaNPP_reverse | ||
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| within MetroscopeModelingLibrary; | ||
| package Examples | ||
| extends Modelica.Icons.ExamplesPackage; | ||
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| within MetroscopeModelingLibrary.MultiFluid.HeatExchangers; | ||||||
| model CoolingTowerMerkel | ||||||
| MetroscopeModelingLibrary.MoistAir.Connectors.Inlet C_cold_in annotation (Placement(transformation(extent={{-10,80},{10,100}}))); | ||||||
| package Water = MetroscopeModelingLibrary.Utilities.Media.WaterSteamMedium; | ||||||
| package MoistAir = MetroscopeModelingLibrary.Utilities.Media.MoistAirMedium; | ||||||
| import MetroscopeModelingLibrary.Utilities.Units; | ||||||
| import MetroscopeModelingLibrary.Utilities.Units.Inputs; | ||||||
| import MetroscopeModelingLibrary.Utilities.Media.WaterSteamMedium; | ||||||
| import MetroscopeModelingLibrary.Utilities.Media.MoistAirMedium.specificEnthalpy; | ||||||
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| Inputs.InputArea Afr; | ||||||
| Inputs.InputReal hd; | ||||||
| Inputs.InputReal Lfi; | ||||||
| Inputs.InputReal afi; | ||||||
| Inputs.InputReal D; | ||||||
| Inputs.InputReal Ratio; | ||||||
| Units.Velocity V_inlet; | ||||||
| Inputs.InputFrictionCoefficient Cf; | ||||||
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| Units.MassFlowRate Q_cold_in; | ||||||
| Units.MassFlowRate Q_cold_out; | ||||||
| Units.MassFlowRate Q_hot_in; | ||||||
| Units.MassFlowRate Q_hot_out; | ||||||
| Units.MassFlowRate Q_evap; | ||||||
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| Units.Temperature T_cold_in(start=T_cold_in_0); | ||||||
| Units.Temperature T_cold_out(start=T_cold_out_0); | ||||||
| Units.Temperature T_hot_in(start=T_hot_in_0); | ||||||
| Units.Temperature T_hot_out(start=T_hot_out_0); | ||||||
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| Units.Temperature T1(start=T1_0); | ||||||
| Units.Temperature T2(start=T2_0); | ||||||
| Units.Temperature T3(start=T3_0); | ||||||
| Units.Temperature T4(start=T4_0); | ||||||
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| Units.Power W; | ||||||
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| Units.SpecificEnthalpy i_initial(start=i_initial_0); | ||||||
| Units.SpecificEnthalpy i_final(start=i_final_0); | ||||||
| Units.SpecificEnthalpy i1(start=i1_0); | ||||||
| Units.SpecificEnthalpy i2(start=i2_0); | ||||||
| Units.SpecificEnthalpy i3(start=i3_0); | ||||||
| Units.SpecificEnthalpy i4(start=i4_0); | ||||||
| Units.SpecificEnthalpy iTot(start=iTot_0); | ||||||
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| Units.Density rho_air_inlet(start=rho_air_inlet_0); | ||||||
| Units.Density rho_air_outlet(start=rho_air_outlet_0); | ||||||
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| Units.HeatCapacity cp; | ||||||
| Units.Pressure P_in; | ||||||
| Units.Pressure P_out; | ||||||
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| constant Real g(unit="m/s2") = Modelica.Constants.g_n; | ||||||
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| // Initialization Parameters | ||||||
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| parameter Units.Temperature T_cold_in_0 = 15 + 273.15; | ||||||
| parameter Units.Temperature T_cold_out_0 = 25 + 273.15; | ||||||
| parameter Units.Temperature T_hot_in_0 = 40 + 273.15; | ||||||
| parameter Units.Temperature T_hot_out_0 = 20 + 273.15; | ||||||
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| parameter Units.Temperature T1_0 = 15 + 273.15; | ||||||
| parameter Units.Temperature T2_0 = 18 + 273.15; | ||||||
| parameter Units.Temperature T3_0 = 22 + 273.15; | ||||||
| parameter Units.Temperature T4_0 = 25 + 273.15; | ||||||
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| parameter Units.SpecificEnthalpy i_initial_0 = 0.5e5; | ||||||
| parameter Units.SpecificEnthalpy i_final_0 = 1.05e5; | ||||||
| parameter Units.SpecificEnthalpy i1_0 = 0.65e5; | ||||||
| parameter Units.SpecificEnthalpy i2_0 = 0.8e5; | ||||||
| parameter Units.SpecificEnthalpy i3_0 = 0.9e5; | ||||||
| parameter Units.SpecificEnthalpy i4_0 = 1e5; | ||||||
| parameter Units.SpecificEnthalpy iTot_0 = (1 / (2e5)); | ||||||
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| parameter Units.Density rho_air_inlet_0 = 1.2754; | ||||||
| parameter Units.Density rho_air_outlet_0 = 1.2460; | ||||||
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| MetroscopeModelingLibrary.WaterSteam.Connectors.Inlet C_hot_in annotation (Placement(transformation(extent={{-100,-10},{-80,10}}), iconTransformation(extent={{-100,-10},{-80,10}}))); | ||||||
| MetroscopeModelingLibrary.WaterSteam.Connectors.Outlet C_hot_out annotation (Placement(transformation(extent={{80,-10},{100,10}}))); | ||||||
| MetroscopeModelingLibrary.MoistAir.Connectors.Outlet C_cold_out annotation (Placement(transformation(extent={{-10,-100},{10,-80}}))); | ||||||
| WaterSteam.BaseClasses.IsoPHFlowModel hot_side_cooling annotation (Placement(transformation(extent={{-70,-10},{-50,10}}))); | ||||||
| MetroscopeModelingLibrary.MoistAir.BoundaryConditions.Sink Air_inlet annotation (Placement(transformation( | ||||||
| extent={{-10,-10},{10,10}}, | ||||||
| rotation=270, | ||||||
| origin={0,18}))); | ||||||
| MetroscopeModelingLibrary.MoistAir.BoundaryConditions.Source Air_outlet annotation (Placement(transformation( | ||||||
| extent={{-10,-10},{10,10}}, | ||||||
| rotation=270, | ||||||
| origin={0,-18}))); | ||||||
| MetroscopeModelingLibrary.MoistAir.BaseClasses.IsoPHFlowModel inputflowmodel annotation (Placement(transformation( | ||||||
| extent={{-10,-10},{10,10}}, | ||||||
| rotation=270, | ||||||
| origin={0,38}))); | ||||||
| MetroscopeModelingLibrary.MoistAir.BaseClasses.IsoPHFlowModel outputflowmodel annotation (Placement(transformation( | ||||||
| extent={{-10,-10},{10,10}}, | ||||||
| rotation=270, | ||||||
| origin={0,-60}))); | ||||||
| MetroscopeModelingLibrary.MoistAir.Pipes.Pipe pipe annotation (Placement(transformation( | ||||||
| extent={{-10,-10},{10,10}}, | ||||||
| rotation=270, | ||||||
| origin={0,62}))); | ||||||
| WaterSteam.BoundaryConditions.Sink Water_inlet annotation (Placement(transformation(extent={{-32,-10},{-12,10}}))); | ||||||
| WaterSteam.BoundaryConditions.Source Water_outlet annotation (Placement(transformation(extent={{10,-10},{30,10}}))); | ||||||
| equation | ||||||
| // Definition | ||||||
| Q_cold_in = Air_inlet.Q_in; | ||||||
| Q_cold_out = Air_outlet.Q_out; | ||||||
| Q_hot_in = Water_inlet.Q_in; | ||||||
| Q_hot_out = Water_outlet.Q_out; | ||||||
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| T_hot_in = Water_inlet.T_in; | ||||||
| T_hot_out = Water_outlet.T_out; | ||||||
| P_in = Air_inlet.P_in; | ||||||
| P_out = Air_outlet.P_out; | ||||||
| T_cold_in = Air_inlet.T_in; | ||||||
| T_cold_out = Air_outlet.T_out; | ||||||
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| cp = WaterSteamMedium.specificHeatCapacityCp(hot_side_cooling.state_in); | ||||||
| W = Q_hot_in * cp * (T_hot_in - T_hot_out); | ||||||
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| Q_evap = - (Q_cold_out + Q_cold_in); | ||||||
| Ratio = Q_evap / W; | ||||||
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| // Energy Balance - Supplementary Equation | ||||||
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| // Energy Balance - Supplementary Equation | |
| // Energy Balance |
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