Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BaseClasses
Package with base classes for Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples
Information
This package contains base classes that are used to construct the models in Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.
Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).
Package Content
| Name | Description |
|---|---|
 PartialBorehole
|
Partial model for borehole example models |
Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BaseClasses.PartialBorehole
Partial model for borehole example models
Information
This partial model is used for examples using boreholes models which extend Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.Examples.BaseClasses.PartialBorehole.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nSeg | 10 | Number of segments to use in vertical discretization of the boreholes |
| Temperature | T_start | 273.15 + 22 | Initial soil temperature [K] |
| Example | borFieDat | Borefield parameters | |
| PartialBorehole | borHol | redeclare Buildings.Fluid.Ge... | Borehole connected to a discrete ground model |
Modelica definition
partial model PartialBorehole "Partial model for borehole example models"
package Medium = Modelica.Media.Water.ConstantPropertyLiquidWater;
parameter Integer nSeg(min=1) = 10
"Number of segments to use in vertical discretization of the boreholes";
parameter Modelica.SIunits.Temperature T_start = 273.15 + 22
"Initial soil temperature";
parameter Buildings.Fluid.Geothermal.Borefields.Data.Borefield.Example
borFieDat "Borefield parameters";
replaceable Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.PartialBorehole
borHol
constrainedby
Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.PartialBorehole(
redeclare package Medium = Medium,
borFieDat=borFieDat,
m_flow_nominal=borFieDat.conDat.mBor_flow_nominal,
dp_nominal=borFieDat.conDat.dp_nominal,
nSeg=nSeg,
TGro_start={T_start for i in 1:nSeg},
TFlu_start={Medium.T_default for i in 1:nSeg})
"Borehole connected to a discrete ground model";
Buildings.Fluid.Sources.MassFlowSource_T sou(
redeclare package Medium = Medium,
nPorts=1,
use_T_in=false,
m_flow=borFieDat.conDat.mBor_flow_nominal,
T=303.15) "Source";
Buildings.Fluid.Sources.Boundary_pT sin(
redeclare package Medium = Medium,
use_p_in=false,
use_T_in=false,
nPorts=1,
p=101330,
T=283.15) "Sink";
Buildings.Fluid.Sensors.TemperatureTwoPort TBorIn(m_flow_nominal=borFieDat.conDat.mBor_flow_nominal,
redeclare package Medium = Medium,
tau=0) "Inlet borehole temperature";
Buildings.Fluid.Sensors.TemperatureTwoPort TBorOut(m_flow_nominal=borFieDat.conDat.mBor_flow_nominal,
redeclare package Medium = Medium,
tau=0) "Outlet borehole temperature";
Buildings.HeatTransfer.Sources.FixedTemperature preTem[nSeg](each T=T_start)
"Prescribed temperature";
equation
connect(sou.ports[1], TBorIn.port_a);
connect(TBorIn.port_b, borHol.port_a);
connect(borHol.port_b, TBorOut.port_a);
connect(TBorOut.port_b, sin.ports[1]);
connect(borHol.port_wall, preTem.port);
end PartialBorehole;