IEA EBC Annex 60 EBC logo

Annex60.Fluid.Sources.Examples

Collection of models that illustrate model use and test models

Information

This package contains examples for the use of models that can be found in Annex60.Fluid.Sources.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name Description
Annex60.Fluid.Sources.Examples.Outside Outside Test model for source and sink with outside weather data
Annex60.Fluid.Sources.Examples.Outside_CpLowRise Outside_CpLowRise Test model for source and sink with outside weather data and wind pressure
Annex60.Fluid.Sources.Examples.TraceSubstancesFlowSource TraceSubstancesFlowSource  

Annex60.Fluid.Sources.Examples.Outside Annex60.Fluid.Sources.Examples.Outside

Test model for source and sink with outside weather data

Annex60.Fluid.Sources.Examples.Outside

Information

This model demonstrates how to connect fluid flow component to a boundary condition that has environmental conditions as obtained from a weather file. The model draws a constant mass flow rate of outside air through its components.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Modelica definition

model Outside "Test model for source and sink with outside weather data" extends Modelica.Icons.Example; package Medium = Annex60.Media.Air "Medium model for air"; Annex60.Fluid.Sources.Outside bou( redeclare package Medium = Medium, nPorts=1) "Model with outside conditions"; Annex60.BoundaryConditions.WeatherData.ReaderTMY3 weaDat(filNam= "modelica://Annex60/Resources/weatherdata/USA_IL_Chicago-OHare.Intl.AP.725300_TMY3.mos"); Annex60.Fluid.Sources.MassFlowSource_T sin( redeclare package Medium = Medium, m_flow=-1, nPorts=1) "Sink"; Annex60.Fluid.Sensors.TemperatureTwoPort senTem( redeclare package Medium = Medium, m_flow_nominal=1) "Temperature sensor"; Annex60.Fluid.Sensors.RelativeHumidityTwoPort senRelHum( redeclare package Medium = Medium, m_flow_nominal=1) "Sensor for relative humidity"; Annex60.Fluid.Sensors.MassFractionTwoPort senMasFra( redeclare package Medium = Medium, m_flow_nominal=1) "Sensor for mass fraction of water"; equation connect(weaDat.weaBus, bou.weaBus); connect(senTem.port_b, sin.ports[1]); connect(senRelHum.port_a, bou.ports[1]); connect(senRelHum.port_b, senMasFra.port_a); connect(senMasFra.port_b, senTem.port_a); end Outside;

Annex60.Fluid.Sources.Examples.Outside_CpLowRise Annex60.Fluid.Sources.Examples.Outside_CpLowRise

Test model for source and sink with outside weather data and wind pressure

Annex60.Fluid.Sources.Examples.Outside_CpLowRise

Information

This model demonstrates the use of a source for ambient conditions that computes the wind pressure on a facade of a low-rise building. Weather data are used for San Francisco, for a period of a week where the wind blows primarily from North-West. The plot shows that the wind pressure on the north- and west-facing facade is positive, whereas it is negative for the south- and east-facing facades.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Modelica definition

model Outside_CpLowRise "Test model for source and sink with outside weather data and wind pressure" extends Modelica.Icons.Example; package Medium = Annex60.Media.Air "Medium model for air"; Annex60.Fluid.Sources.Outside_CpLowRise west( redeclare package Medium = Medium, s=5, azi=Annex60.Types.Azimuth.W, Cp0=0.6) "Model with outside conditions"; Annex60.BoundaryConditions.WeatherData.ReaderTMY3 weaDat( filNam="modelica://Annex60/Resources/weatherdata/USA_CA_San.Francisco.Intl.AP.724940_TMY3.mos"); Annex60.Fluid.Sources.Outside_CpLowRise north( redeclare package Medium = Medium, s=1/5, azi=Annex60.Types.Azimuth.N, Cp0=0.6) "Model with outside conditions"; Annex60.Fluid.Sources.Outside_CpLowRise south( redeclare package Medium = Medium, s=1/5, azi=Annex60.Types.Azimuth.S, Cp0=0.6) "Model with outside conditions"; Annex60.Fluid.Sources.Outside_CpLowRise east( redeclare package Medium = Medium, s=5, azi=Annex60.Types.Azimuth.E, Cp0=0.6) "Model with outside conditions"; equation connect(weaDat.weaBus, west.weaBus); connect(weaDat.weaBus, north.weaBus); connect(weaDat.weaBus, south.weaBus); connect(weaDat.weaBus, east.weaBus); end Outside_CpLowRise;

Annex60.Fluid.Sources.Examples.TraceSubstancesFlowSource Annex60.Fluid.Sources.Examples.TraceSubstancesFlowSource


Annex60.Fluid.Sources.Examples.TraceSubstancesFlowSource

Information

This model demonstrates the use of trace substances that are added to a volume of air. The source is a step function of 2 kg/s CO2 from t=0 second to t=0.5 second. The sensors C and C1 measure the same concentration that initially increases and then remains constant as there is no flow through the volumes vol and vol1. The sensors C2 and C3 first meaure an increase in concentration, which then decays to zero as there is a mass flow rate with zero CO2 from the source bou to the sink sin.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Modelica definition

model TraceSubstancesFlowSource extends Modelica.Icons.Example; package Medium = Annex60.Media.Air(extraPropertiesNames={"CO2"}); MixingVolumes.MixingVolume vol( redeclare package Medium = Medium, V=100, m_flow_nominal=1, nPorts=3, energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial) "Mixing volume"; Sources.TraceSubstancesFlowSource sou(redeclare package Medium = Medium, use_m_flow_in=true, nPorts=1); Modelica.Blocks.Sources.Step step( startTime=0.5, height=-2, offset=2); FixedResistances.PressureDrop res( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; MixingVolumes.MixingVolume vol1( redeclare package Medium = Medium, V=100, m_flow_nominal=1, nPorts=3, energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial) "Mixing volume"; Sources.TraceSubstancesFlowSource sou1( redeclare package Medium = Medium, use_m_flow_in=true, nPorts=1); Annex60.Utilities.Diagnostics.AssertEquality assEqu(threShold=1E-4) "Assert that both volumes have the same concentration"; MixingVolumes.MixingVolume vol2( redeclare package Medium = Medium, p_start=Medium.p_default, V=100, m_flow_nominal=1, nPorts=3, energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial) "Mixing volume"; MixingVolumes.MixingVolume vol3( redeclare package Medium = Medium, p_start=Medium.p_default, V=100, m_flow_nominal=1, nPorts=3, energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial) "Mixing volume"; Annex60.Utilities.Diagnostics.AssertEquality assEqu1( threShold=1E-4) "Assert that both volumes have the same concentration"; MixingVolumes.MixingVolume vol4( redeclare package Medium = Medium, nPorts=4, p_start=Medium.p_default, V=100, m_flow_nominal=1, energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial) "Mixing volume"; Sources.TraceSubstancesFlowSource sou2( redeclare package Medium = Medium, use_m_flow_in=true, nPorts=1); Annex60.Fluid.Sources.Boundary_pT bou( redeclare package Medium = Medium, p=101325, nPorts=1, T=293.15); Annex60.Fluid.Sources.Boundary_pT sin( redeclare package Medium = Medium, nPorts=2, p=101320, T=293.15) "Sink boundary conditions"; FixedResistances.PressureDrop res1( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; FixedResistances.PressureDrop res2( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; FixedResistances.PressureDrop res3( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; Sensors.TraceSubstances C(redeclare package Medium = Medium) "Trace substance sensor"; Sensors.TraceSubstances C1(redeclare package Medium = Medium) "Trace substance sensor"; Sensors.TraceSubstances C2(redeclare package Medium = Medium) "Trace substance sensor"; Sensors.TraceSubstances C3(redeclare package Medium = Medium) "Trace substance sensor"; FixedResistances.PressureDrop res4( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; FixedResistances.PressureDrop res6( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; FixedResistances.PressureDrop res5( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; FixedResistances.PressureDrop res7( redeclare package Medium = Medium, m_flow_nominal=1, dp_nominal=1) "Resistance, used to check if species are transported between ports"; Annex60.Fluid.Sources.Boundary_pT sin1( redeclare package Medium = Medium, nPorts=2, p=101320, T=293.15) "Sink boundary conditions"; equation connect(res3.port_b, vol4.ports[2]); connect(res1.port_b, sin.ports[1]); connect(res2.port_b, sin.ports[2]); connect(bou.ports[1], res3.port_a); connect(sou1.ports[1], res.port_a); connect(sou2.ports[1], vol4.ports[1]); connect(step.y, sou.m_flow_in); connect(step.y, sou1.m_flow_in); connect(step.y, sou2.m_flow_in); connect(assEqu.u1, C.C); connect(C1.C, assEqu.u2); connect(assEqu1.u1, C2.C); connect(C3.C, assEqu1.u2); connect(sou.ports[1], vol.ports[1]); connect(vol.ports[2], C.port); connect(res.port_b, vol1.ports[1]); connect(vol1.ports[2], C1.port); connect(vol2.ports[1], res1.port_a); connect(vol3.ports[1], res2.port_a); connect(C2.port, vol2.ports[2]); connect(C3.port, vol3.ports[2]); connect(vol4.ports[3], res4.port_a); connect(vol4.ports[4], res6.port_a); connect(res6.port_b, vol3.ports[3]); connect(res4.port_b, vol2.ports[3]); connect(vol.ports[3], res5.port_a); connect(res5.port_b, sin1.ports[1]); connect(vol1.ports[3], res7.port_a); connect(res7.port_b, sin1.ports[2]); end TraceSubstancesFlowSource;
http://iea-annex60.org