FixedResistancesParallel.mo

within Buildings.Fluid.FixedResistances.Examples;
model FixedResistancesParallel
  extends Modelica.Icons.Example;

 package Medium = Buildings.Media.Water;
    Modelica.Blocks.Sources.Constant PAtm(k=101325)
      annotation (Placement(transformation(extent={{66,76},{86,96}})));
    Modelica.Blocks.Sources.Ramp P(
      duration=1,
    height=20,
    offset=101315)
                 annotation (Placement(transformation(extent={{-100,70},{-80,90}})));
    Buildings.Fluid.FixedResistances.FixedResistanceDpM res1(
    redeclare package Medium = Medium,
    m_flow_nominal=5,
    dp_nominal=10,
    deltaM=0.3,
    linearized=false,
    from_dp=false)
             annotation (Placement(transformation(extent={{-28,30},{-8,50}})));
  Buildings.Fluid.Sources.Boundary_pT sou1(          redeclare package Medium
      = Medium,
    T=293.15,
    nPorts=2,
    use_p_in=true)        annotation (Placement(transformation(extent={{-70,28},
            {-50,48}})));
  Buildings.Fluid.Sources.Boundary_pT sin1(          redeclare package Medium
      = Medium,
    T=283.15,
    nPorts=2,
    use_p_in=true)        annotation (Placement(transformation(extent={{80,28},
            {60,48}})));
    Buildings.Fluid.FixedResistances.FixedResistanceDpM res2(
    redeclare package Medium = Medium,
    m_flow_nominal=5,
    dp_nominal=10,
    deltaM=0.3,
    linearized=false,
    from_dp=false)
             annotation (Placement(transformation(extent={{-28,-10},{-8,10}})));
  Buildings.Fluid.Sensors.MassFlowRate masFlo2(redeclare package Medium = Medium)
    "Mass flow rate sensor" annotation (Placement(transformation(extent={{0,-10},
            {20,10}})));
  Buildings.Utilities.Diagnostics.AssertEquality assEqu(threShold=1E-4, message=
        "Inputs differ, check that lossless pipe is correctly implemented.")
    "Assert equality of the two mass flow rates"
    annotation (Placement(transformation(extent={{40,60},{60,80}})));
  Buildings.Fluid.Sensors.MassFlowRate masFlo1(redeclare package Medium = Medium)
    "Mass flow rate sensor" annotation (Placement(transformation(extent={{20,30},
            {40,50}})));

equation
  connect(PAtm.y, sin1.p_in)
                            annotation (Line(points={{87,86},{94,86},{94,46},{
          82,46}}, color={0,0,127}));
  connect(P.y, sou1.p_in) annotation (Line(points={{-79,80},{-74,80},{-74,46},{
          -72,46}}, color={0,0,127}));
  connect(res2.port_b, masFlo2.port_a) annotation (Line(points={{-8,6.10623e-16},
          {-4,-3.36456e-22},{-4,6.10623e-16},{-5.55112e-16,6.10623e-16}},
                          color={0,127,255}));
  connect(res1.port_b, masFlo1.port_a)
    annotation (Line(points={{-8,40},{20,40}},color={0,127,255}));
  connect(sou1.ports[1], res1.port_a) annotation (Line(
      points={{-50,40},{-28,40}},
      color={0,127,255},
      smooth=Smooth.None));
  connect(sou1.ports[2], res2.port_a) annotation (Line(
      points={{-50,36},{-38,36},{-38,6.10623e-16},{-28,6.10623e-16}},
      color={0,127,255},
      smooth=Smooth.None));
  connect(sin1.ports[1], masFlo1.port_b) annotation (Line(
      points={{60,40},{40,40}},
      color={0,127,255},
      smooth=Smooth.None));
  connect(sin1.ports[2], masFlo2.port_b) annotation (Line(
      points={{60,36},{52,36},{52,6.10623e-16},{20,6.10623e-16}},
      color={0,127,255},
      smooth=Smooth.None));
  connect(masFlo2.m_flow, assEqu.u1) annotation (Line(
      points={{10,11},{10,76},{38,76}},
      color={0,0,127},
      smooth=Smooth.None));
  connect(masFlo1.m_flow, assEqu.u2) annotation (Line(
      points={{30,51},{30,64},{38,64}},
      color={0,0,127},
      smooth=Smooth.None));
    annotation (experiment(StopTime=1.0),
__Dymola_Commands(file="modelica://Buildings/Resources/Scripts/Dymola/Fluid/FixedResistances/Examples/FixedResistancesParallel.mos" "Simulate and plot"));
end FixedResistancesParallel;