modelPartialInternalHEX
Partial model to implement the internal heat exchanger of a borehole segment
Information
Partial model to implement models simulating the thermal and fluid behaviour of a borehole segment.
The thermodynamic properties of the fluid circulating in the borehole are calculated
as protected parameters in this partial model: cp (cpMed),
k (kMed) and μ (muMed). Additionally, the
following parameters are already declared as protected parameters and thus do not
need to be declared in models which extend this partial model:
-
Rgb_val(Thermal resistance between grout zone and borehole wall) -
RCondGro_val(Thermal resistance between pipe wall and capacity in grout) -
x(Grout capacity location)
Note that the model is same as Buildings.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.PartialInternalHEX, except that different borefield data record is used.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.Fluid.Geothermal.Borefields.TOUGH.Data.Borefield.Template | borFieDat | Borefield parameters | |
| Real | mSenFac | 1 | Factor for scaling the sensible thermal mass of the volume |
| Modelica.Units.SI.Length | hSeg | Length of the internal heat exchanger | |
| Modelica.Units.SI.Volume | VTubSeg | hSeg*Modelica.Constants.pi*(borFieDat.conDat.rTub - borFieDat.conDat.eTub)^2 | Fluid volume in each tube |
| Initialization | |||
| Modelica.Units.SI.Temperature | TFlu_start | Start value of fluid temperature | |
| Modelica.Units.SI.Temperature | TGro_start | Start value of grout temperature | |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_wall | Thermal connection for borehole wall |
Contents
| Name | Description |
|---|---|
 Medium | Medium |
Revisions
-
June 22, 2026, by Jianjun Hu:
First implementation.