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Issue2770 air cooled chiller (7.0.x) (#2776)
* Apply changes to maintenance 70x branch * Update release notes * Removed white-space * Changed diagram size * Applied changes from issue2770_airCooledChiller Co-authored-by: Michael Wetter <[email protected]>
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101 changes: 101 additions & 0 deletions
101
Buildings/Fluid/Chillers/Examples/BaseClasses/PartialElectric_AirCooled.mo
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| within Buildings.Fluid.Chillers.Examples.BaseClasses; | ||
| partial model PartialElectric_AirCooled | ||
| "Base class for test model of chiller electric EIR with air-cooled condenser" | ||
| package Medium1 = Buildings.Media.Air "Medium model"; | ||
| package Medium2 = Buildings.Media.Water "Medium model"; | ||
|
|
||
| parameter Modelica.SIunits.Power P_nominal | ||
| "Nominal compressor power (at y=1)"; | ||
| parameter Modelica.SIunits.TemperatureDifference dTEva_nominal=10 | ||
| "Temperature difference evaporator inlet-outlet"; | ||
| parameter Modelica.SIunits.TemperatureDifference dTCon_nominal=10 | ||
| "Temperature difference condenser outlet-inlet"; | ||
| parameter Real COPc_nominal = 3 "Chiller COP"; | ||
| parameter Modelica.SIunits.MassFlowRate mEva_flow_nominal | ||
| "Nominal mass flow rate at evaporator"; | ||
| parameter Modelica.SIunits.MassFlowRate mCon_flow_nominal | ||
| "Nominal mass flow rate at condenser"; | ||
|
|
||
| Sources.MassFlowSource_WeatherData sou1( | ||
| redeclare package Medium = Medium1, | ||
| m_flow=mCon_flow_nominal) | ||
| "Weather data" | ||
| annotation (Placement(transformation(extent={{-60,6},{-40,26}}))); | ||
| Buildings.Fluid.Sources.MassFlowSource_T sou2( | ||
| redeclare package Medium = Medium2, | ||
| use_T_in=true, | ||
| m_flow=mEva_flow_nominal, | ||
| T=291.15) "Mass flow source" | ||
| annotation (Placement(transformation(extent={{60,-6},{40,14}}))); | ||
| Buildings.Fluid.Sources.Boundary_pT sin1( | ||
| redeclare package Medium = Medium1, | ||
| nPorts=1) "Pressure source" | ||
| annotation (Placement( | ||
| transformation( | ||
| extent={{10,-10},{-10,10}}, | ||
| origin={70,40}))); | ||
| Buildings.Fluid.Sources.Boundary_pT sin2( | ||
| redeclare package Medium = Medium2, | ||
| nPorts=1) "Pressure source" | ||
| annotation (Placement( | ||
| transformation( | ||
| extent={{-10,-10},{10,10}}, | ||
| origin={-70,-20}))); | ||
| Modelica.Blocks.Sources.Ramp TSet( | ||
| duration=3600*6, | ||
| startTime=197.25*24*3600, | ||
| offset=273.15 + 5, | ||
| height=5) "Set point for leaving chilled water temperature" | ||
| annotation (Placement(transformation(extent={{-80,50},{-60,70}}))); | ||
| Modelica.Blocks.Sources.Ramp TEva_in( | ||
| offset=273.15 + 10, | ||
| height=6, | ||
| startTime=197*24*3600, | ||
| duration=12*3600) | ||
| "Evaporator inlet temperature" | ||
| annotation (Placement(transformation(extent={{50,-40},{70,-20}}))); | ||
| Modelica.Blocks.Sources.Pulse pulse(period=3600/2) | ||
| "Pulse signal" | ||
| annotation (Placement(transformation(extent={{-80,80},{-60,100}}))); | ||
| Modelica.Blocks.Logical.GreaterThreshold greaterThreshold(threshold=0.5) | ||
| "Greater threshold" | ||
| annotation (Placement(transformation(extent={{-40,80},{-20,100}}))); | ||
| Buildings.Fluid.FixedResistances.PressureDrop res1( | ||
| redeclare package Medium = Medium1, | ||
| m_flow_nominal=mCon_flow_nominal, | ||
| dp_nominal=6000) "Flow resistance" | ||
| annotation (Placement(transformation(extent={{32,30},{52,50}}))); | ||
| Buildings.Fluid.FixedResistances.PressureDrop res2( | ||
| dp_nominal=6000, | ||
| redeclare package Medium = Medium2, | ||
| m_flow_nominal=mEva_flow_nominal) "Flow resistance" | ||
| annotation (Placement(transformation(extent={{-20,-30},{-40,-10}}))); | ||
| BoundaryConditions.WeatherData.ReaderTMY3 weaDat(filNam= | ||
| Modelica.Utilities.Files.loadResource( | ||
| "modelica://Buildings/Resources/weatherdata/USA_IL_Chicago-OHare.Intl.AP.725300_TMY3.mos")) | ||
| annotation (Placement(transformation(extent={{-100,20},{-80,40}}))); | ||
| equation | ||
| connect(TEva_in.y, sou2.T_in) annotation (Line( | ||
| points={{71,-30},{80,-30},{80,8},{62,8}}, | ||
| color={0,0,127}, | ||
| smooth=Smooth.None)); | ||
|
|
||
| connect(greaterThreshold.u, pulse.y) annotation (Line( | ||
| points={{-42,90},{-59,90}}, | ||
| color={0,0,127}, | ||
| smooth=Smooth.None)); | ||
| connect(res1.port_b, sin1.ports[1]) annotation (Line( | ||
| points={{52,40},{60,40}}, | ||
| color={0,127,255}, | ||
| smooth=Smooth.None)); | ||
| connect(res2.port_b, sin2.ports[1]) annotation (Line( | ||
| points={{-40,-20},{-60,-20}}, | ||
| color={0,127,255}, | ||
| smooth=Smooth.None)); | ||
| connect(weaDat.weaBus, sou1.weaBus) annotation (Line( | ||
| points={{-80,30},{-70,30},{-70,16.2},{-60,16.2}}, | ||
| color={255,204,51}, | ||
| thickness=0.5)); | ||
| annotation (Diagram(coordinateSystem(extent={{-120,-100},{100,120}})), Icon( | ||
| coordinateSystem(extent={{-120,-100},{100,120}}))); | ||
| end PartialElectric_AirCooled; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1,2 @@ | ||
| PartialElectric | ||
| PartialElectric_AirCooled |
74 changes: 74 additions & 0 deletions
74
Buildings/Fluid/Chillers/Examples/ElectricEIR_AirCooled.mo
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| within Buildings.Fluid.Chillers.Examples; | ||
| model ElectricEIR_AirCooled | ||
| "Test model for chiller electric EIR with air-cooled condenser" | ||
| extends Modelica.Icons.Example; | ||
| extends Buildings.Fluid.Chillers.Examples.BaseClasses.PartialElectric_AirCooled( | ||
| P_nominal=-per.QEva_flow_nominal/per.COP_nominal, | ||
| mEva_flow_nominal=per.mEva_flow_nominal, | ||
| mCon_flow_nominal=per.mCon_flow_nominal, | ||
| sou1(nPorts=1), | ||
| sou2(nPorts=1)); | ||
|
|
||
| parameter Data.ElectricEIR.ElectricEIRChiller_York_YCAL0033EE_101kW_3_1COP_AirCooled | ||
| per "Chiller performance data" | ||
| annotation (Placement(transformation(extent={{60,80},{80,100}}))); | ||
|
|
||
| Buildings.Fluid.Chillers.ElectricEIR chi( | ||
| redeclare package Medium1 = Medium1, | ||
| redeclare package Medium2 = Medium2, | ||
| per=per, | ||
| energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial, | ||
| dp1_nominal=6000, | ||
| dp2_nominal=6000) "Chiller model" | ||
| annotation (Placement(transformation(extent={{0,0},{20,20}}))); | ||
|
|
||
| equation | ||
| connect(sou1.ports[1], chi.port_a1) annotation (Line( | ||
| points={{-40,16},{0,16}}, | ||
| color={0,127,255}, | ||
| smooth=Smooth.None)); | ||
| connect(chi.port_b1, res1.port_a) annotation (Line( | ||
| points={{20,16},{26,16},{26,40},{32,40}}, | ||
| color={0,127,255}, | ||
| smooth=Smooth.None)); | ||
| connect(sou2.ports[1], chi.port_a2) annotation (Line( | ||
| points={{40,4},{20,4}}, | ||
| color={0,127,255}, | ||
| smooth=Smooth.None)); | ||
| connect(chi.port_b2, res2.port_a) annotation (Line( | ||
| points={{0,4},{-10,4},{-10,-20},{-20,-20}}, | ||
| color={0,127,255}, | ||
| smooth=Smooth.None)); | ||
| connect(chi.on, greaterThreshold.y) annotation (Line( | ||
| points={{-2,13},{-10,13},{-10,90},{-19,90}}, | ||
| color={255,0,255}, | ||
| smooth=Smooth.None)); | ||
| connect(chi.TSet, TSet.y) annotation (Line( | ||
| points={{-2,7},{-30,7},{-30,60},{-59,60}}, | ||
| color={0,0,127}, | ||
| smooth=Smooth.None)); | ||
| annotation ( | ||
| experiment( | ||
| StartTime=17020800, | ||
| StopTime=17064000, | ||
| Tolerance=1e-06), | ||
| __Dymola_Commands(file="modelica://Buildings/Resources/Scripts/Dymola/Fluid/Chillers/Examples/ElectricEIR_AirCooled.mos" | ||
| "Simulate and plot"), | ||
| Documentation(info="<html> | ||
| <p> | ||
| Example that simulates a chiller whose efficiency is computed based on the | ||
| condenser entering and evaporator leaving fluid temperature. | ||
| A bicubic polynomial is used to compute the chiller part load performance. | ||
| This example is for an air-cooled chiller. | ||
| </p> | ||
| </html>", revisions="<html> | ||
| <ul> | ||
| <li> | ||
| November 19, 2021 by David Blum:<br/> | ||
| First implementation. | ||
| </li> | ||
| </ul> | ||
| </html>"), | ||
| Diagram(coordinateSystem(extent={{-120,-100},{100,120}})), | ||
| Icon(coordinateSystem(extent={{-100,-100},{100,100}}))); | ||
| end ElectricEIR_AirCooled; |
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