Buildings.Fluid.Storage.Ice.BaseClasses.Examples
Examples that test models in the base classes
Information
This package contains examples that test the models in Buildings.Fluid.Storage.Ice.BaseClasses.
Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).
Package Content
| Name | Description |
|---|---|
 LMTDStar
|
Example that tests the LMTDStar model |
| NormalizedHeatFlowRate
|
Example to calculate qStar |
| QStar
|
Example to calculate QStar |
| StateOfCharge
|
Example that tests the ice mass calculation |
Buildings.Fluid.Storage.Ice.BaseClasses.Examples.LMTDStar
Example that tests the LMTDStar model
Information
This example is to validate the LMTDStar.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Modelica definition
model LMTDStar "Example that tests the LMTDStar model"
extends Modelica.Icons.Example;
Buildings.Fluid.Storage.Ice.BaseClasses.LMTDStar lmtdSta "LMTD star";
Modelica.Blocks.Sources.Cosine TIn(
amplitude=4,
f=1/3600,
offset=273.15 + 2) "Inlet temperature";
Modelica.Blocks.Sources.Cosine TOut(
amplitude=4,
f=1/3600,
offset=273.15 + 2,
phase=3.1415926535898) "Outlet temperature";
equation
connect(TIn.y, lmtdSta.TIn);
connect(TOut.y, lmtdSta.TOut);
end LMTDStar;
Buildings.Fluid.Storage.Ice.BaseClasses.Examples.NormalizedHeatFlowRate
Example to calculate qStar
Information
This example is to validate the Buildings.Fluid.Storage.Ice.BaseClasses.NormalizedHeatFlowRate.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | coeCha[6] | {0,0.09,-0.15,0.612,-0.324,-... | Coefficient for charging curve |
| Real | coeDisCha[6] | {0,0.09,-0.15,0.612,-0.324,-... | Coefficient for discharging curve |
| Real | dt | 3600 | Time step used in the samples for curve fitting |
Modelica definition
model NormalizedHeatFlowRate "Example to calculate qStar"
extends Modelica.Icons.Example;
parameter Real coeCha[6] = {0, 0.09, -0.15, 0.612, -0.324, -0.216} "Coefficient for charging curve";
parameter Real coeDisCha[6] = {0, 0.09, -0.15, 0.612, -0.324, -0.216} "Coefficient for discharging curve";
parameter Real dt = 3600 "Time step used in the samples for curve fitting";
Modelica.Blocks.Sources.Cosine fra(
amplitude=0.5,
offset=0.5,
f=1/7200) "Fraction of charge";
Buildings.Fluid.Storage.Ice.BaseClasses.NormalizedHeatFlowRate norQSta(
coeCha=coeCha,
dtCha=dt,
coeDisCha=coeDisCha,
dtDisCha=dt) "Storage heat transfer rate";
Modelica.Blocks.Sources.Step lmtd(
startTime=3600,
offset=1,
height=-0.5)
"lmtd start";
Controls.OBC.CDL.Reals.GreaterThreshold greThr(t=0.75)
"Switch the change between charging and discharging mode";
Controls.OBC.CDL.Logical.Not not1;
equation
connect(fra.y, norQSta.SOC);
connect(lmtd.y, norQSta.lmtdSta);
connect(lmtd.y, greThr.u);
connect(norQSta.canMelt, greThr.y);
connect(greThr.y, not1.u);
connect(not1.y, norQSta.canFreeze);
end NormalizedHeatFlowRate;
Buildings.Fluid.Storage.Ice.BaseClasses.Examples.QStar
Example to calculate QStar
Information
This example is to validate the Buildings.Fluid.Storage.Ice.BaseClasses.QStar.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | coeCha[6] | {0,0.09,-0.15,0.612,-0.324,-... | Coefficient for charging curve |
| Real | dt | 3600 | Time step used in the samples for curve fitting |
Modelica definition
model QStar "Example to calculate QStar"
extends Modelica.Icons.Example;
parameter Real coeCha[6] = {0, 0.09, -0.15, 0.612, -0.324, -0.216} "Coefficient for charging curve";
parameter Real dt = 3600 "Time step used in the samples for curve fitting";
Modelica.Blocks.Sources.Cosine fra(
amplitude=0.5,
f=1/86400,
offset=0.5) "Fraction of charge";
Modelica.Blocks.Sources.Constant lmtd(k=1) "Log mean temperature difference";
Buildings.Fluid.Storage.Ice.BaseClasses.QStar qSta(coeff=coeCha, dt=dt);
Controls.OBC.CDL.Logical.Sources.Constant active(k=true)
"Outputs true to activate the component";
equation
connect(fra.y, qSta.x);
connect(lmtd.y, qSta.lmtdSta);
connect(active.y, qSta.active);
end QStar;
Buildings.Fluid.Storage.Ice.BaseClasses.Examples.StateOfCharge
Example that tests the ice mass calculation
Information
This example is to validate the model that calculates the ice mass.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Modelica definition
model StateOfCharge "Example that tests the ice mass calculation"
extends Modelica.Icons.Example;
Buildings.Fluid.Storage.Ice.BaseClasses.StateOfCharge soc(E_nominal=2846.35*
333550, SOC_start=1/2) "State of charge";
Modelica.Blocks.Sources.Cosine q(
f=1/3600,
amplitude=1,
offset=0)
"Heat transfer rate: postive for charging, negative for discharging";
Modelica.Blocks.Math.Gain hf(k=333550) "Fusion of heat of ice";
equation
connect(q.y, hf.u);
connect(hf.y, soc.Q_flow);
end StateOfCharge;