Buildings.Fluid.HeatExchangers.ActiveBeams.Validation
Collection of validation models
Information
This package contains validation models for the classes in Buildings.Fluid.HeatExchangers.ActiveBeams.
Note that most validation models contain simple input data which may not be realistic, but for which the correct output can be obtained through an analytic solution. The examples plot various outputs, which have been verified against these solutions. These model outputs are stored as reference data and used for continuous validation whenever models in the library change.
Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).
Package Content
| Name | Description |
|---|---|
 NumberOfBeams
|
|
| NumberOfBeamsDynamics
|
Validation model for the dynamic response for one and multiple beams |
Buildings.Fluid.HeatExchangers.ActiveBeams.Validation.NumberOfBeams
Information
This model validates the scaling of the heat tranfer and pressure drop for
nBeams > 1.
It uses two instances of
Buildings.Fluid.HeatExchangers.ActiveBeams.CoolingAndHeating,
one with
nBeams = 1 and one with
nBeams = 10.
Extends from Modelica.Icons.Example (Icon for runnable examples).
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nBeams | 10 | Number of beams |
Modelica definition
model NumberOfBeams
extends Modelica.Icons.Example;
package MediumA = Buildings.Media.Air "Medium model for air";
package MediumW = Buildings.Media.Water "Medium model for water";
parameter Integer nBeams(min=1) = 10 "Number of beams";
Buildings.Fluid.Sources.FixedBoundary sin_1(
redeclare package Medium = MediumW,
nPorts=2) "Sink for chilled water";
Buildings.Fluid.Sources.MassFlowSource_T souAir(
redeclare package Medium = MediumA,
use_m_flow_in=false,
nPorts=1,
m_flow=0.0792,
T=285.85) "Source for air";
Buildings.Fluid.Sources.FixedBoundary sin_3(
redeclare package Medium = MediumA,
nPorts=2);
Buildings.Fluid.Sources.FixedBoundary sou_1(
redeclare package Medium = MediumW,
nPorts=2,
T=288.15) "Source for chilled water";
Buildings.Fluid.Movers.FlowControlled_m_flow pumHotWat(
redeclare package Medium = MediumW,
m_flow_nominal=0.094,
addPowerToMedium=false,
energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState,
use_inputFilter=false,
nominalValuesDefineDefaultPressureCurve=true) "Pump for hot water";
Buildings.Fluid.Sources.FixedBoundary sou_2(
redeclare package Medium = MediumW,
nPorts=2,
T=320.95) "Source for hot water";
Buildings.Fluid.Sources.FixedBoundary sin_2(
redeclare package Medium = MediumW,
nPorts=2) "Sink for hot water";
Buildings.Fluid.Movers.FlowControlled_m_flow pumChiWat(
redeclare package Medium = MediumW,
m_flow_nominal=0.094,
addPowerToMedium=false,
energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState,
use_inputFilter=false,
nominalValuesDefineDefaultPressureCurve=true) "Pump for chilled water";
Buildings.Fluid.HeatExchangers.ActiveBeams.CoolingAndHeating beaCooHea(
redeclare package MediumWat = MediumW,
redeclare package MediumAir = MediumA,
redeclare Buildings.Fluid.HeatExchangers.ActiveBeams.Data.Trox.DID632A_nozzleH_length6ft_cooling
perCoo,
redeclare Buildings.Fluid.HeatExchangers.ActiveBeams.Data.Trox.DID632A_nozzleH_length6ft_heating
perHea,
nBeams=1,
energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState)
"Active beam";
Buildings.HeatTransfer.Sources.PrescribedTemperature
prescribedTemperature "Room temperature";
Buildings.Fluid.Sources.MassFlowSource_T souAir10(
redeclare package Medium = MediumA,
use_m_flow_in=false,
nPorts=1,
m_flow=0.0792*nBeams,
T=285.85) "Source for air";
Buildings.Fluid.Movers.FlowControlled_m_flow pumHotWat10(
redeclare package Medium = MediumW,
addPowerToMedium=false,
m_flow_nominal=0.094*nBeams,
energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState,
use_inputFilter=false,
nominalValuesDefineDefaultPressureCurve=true) "Pump for hot water";
Buildings.Fluid.Movers.FlowControlled_m_flow pumChiWat10(
redeclare package Medium = MediumW,
addPowerToMedium=false,
m_flow_nominal=0.094*nBeams,
energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState,
use_inputFilter=false,
nominalValuesDefineDefaultPressureCurve=true) "Pump for chilled water";
Buildings.Fluid.HeatExchangers.ActiveBeams.CoolingAndHeating beaCooHea10(
redeclare package MediumWat = MediumW,
redeclare package MediumAir = MediumA,
redeclare Buildings.Fluid.HeatExchangers.ActiveBeams.Data.Trox.DID632A_nozzleH_length6ft_cooling
perCoo,
redeclare Buildings.Fluid.HeatExchangers.ActiveBeams.Data.Trox.DID632A_nozzleH_length6ft_heating
perHea,
nBeams=nBeams,
energyDynamics=Modelica.Fluid.Types.Dynamics.SteadyState)
"Active beam";
Modelica.Blocks.Sources.Step step(
height=-0.094,
offset=0.094,
startTime=2000) "Chilled water mass flow rate";
Modelica.Blocks.Sources.Step step1(
height=0.094,
startTime=3000)
"Hot water mass flow rate";
Modelica.Blocks.Sources.Step step2(
height=0.094*nBeams,
startTime=3000) "Hot water mass flow rate";
Modelica.Blocks.Sources.Step step3(
height=-0.094*nBeams,
offset=0.094*nBeams,
startTime=2000) "Chilled water mass flow rate";
Modelica.Blocks.Sources.Step step4(
offset=273.15 + 25,
height=-5,
startTime=2500) "Room air temperature variation";
equation
connect(sou_2.ports[1], pumHotWat.port_a);
connect(pumChiWat.port_a, sou_1.ports[1]);
connect(pumChiWat.port_b, beaCooHea.watCoo_a);
connect(beaCooHea.watCoo_b, sin_1.ports[1]);
connect(sin_2.ports[1], beaCooHea.watHea_b);
connect(beaCooHea.watHea_a, pumHotWat.port_b);
connect(souAir.ports[1], beaCooHea.air_a);
connect(sin_3.ports[1], beaCooHea.air_b);
connect(pumChiWat10.port_b, beaCooHea10.watCoo_a);
connect(beaCooHea10.watHea_a, pumHotWat10.port_b);
connect(souAir10.ports[1], beaCooHea10.air_a);
connect(pumChiWat10.port_a, sou_1.ports[2]);
connect(pumHotWat10.port_a, sou_2.ports[2]);
connect(beaCooHea10.air_b, sin_3.ports[2]);
connect(beaCooHea10.watCoo_b, sin_1.ports[2]);
connect(beaCooHea10.watHea_b, sin_2.ports[2]);
connect(step.y, pumChiWat.m_flow_in);
connect(step1.y, pumHotWat.m_flow_in);
connect(step3.y, pumChiWat10.m_flow_in);
connect(step2.y, pumHotWat10.m_flow_in);
connect(step4.y, prescribedTemperature.T);
connect(prescribedTemperature.port, beaCooHea10.heaPor);
connect(beaCooHea.heaPor, prescribedTemperature.port);
end NumberOfBeams;
Buildings.Fluid.HeatExchangers.ActiveBeams.Validation.NumberOfBeamsDynamics
Validation model for the dynamic response for one and multiple beams
Information
This model validates whether the transient response is indeed independent of the number of beams. The model is similar to Buildings.Fluid.HeatExchangers.ActiveBeams.Validation.NumberOfBeams, except that it is configured with a dynamic balance and non-default initial conditions.
Extends from NumberOfBeams.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nBeams | 2 | Number of beams |
Modelica definition
model NumberOfBeamsDynamics
"Validation model for the dynamic response for one and multiple beams"
extends NumberOfBeams(
nBeams = 2,
beaCooHea(
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
show_T=true,
tau=120,
TWatCoo_start=278.15,
TWatHea_start=303.15),
beaCooHea10(
energyDynamics=Modelica.Fluid.Types.Dynamics.FixedInitial,
show_T=true,
tau=120,
TWatCoo_start=278.15,
TWatHea_start=303.15),
step(startTime=200),
step1(startTime=300),
step3(startTime=200),
step2(startTime=300));
end NumberOfBeamsDynamics;