modelInternalHEXTwoUTube
Comparison of the effective borehole thermal resistance from the thermal network of Bauer et al. with the resistance calculated by doubleUTubeResistances (ref)
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This example simulates the interior thermal behavior of a double U-tube borehole segment.Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | nSeg | 10 | Number of segments to use in vertical discretization of the boreholes |
| Modelica.Units.SI.Length | hSeg | borFieDat.conDat.hBor/nSeg | Length of the internal heat exchanger |
| BuildingSystems.Fluid.Geothermal.Borefields.Data.Borefield.Example | borFieDat | Borefield data |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| BuildingSystems.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.InternalHEXTwoUTube | intHex | ||
| Modelica.Thermal.HeatTransfer.Sources.FixedTemperature | fixedTemperature | ||
| BuildingSystems.Fluid.Sources.MassFlowSource_T | boundary | ||
| BuildingSystems.Fluid.Sources.MassFlowSource_T | boundary1 | ||
| BuildingSystems.Fluid.Sources.Boundary_pT | bou | ||
| Real | Rb_sim | ((senTem.T + senTem1.T + senTem2.T + senTem3.T)/4 - intHex.port_wall.T)/max(-intHex.port_wall.Q_flow/hSeg, 1) | |
| BuildingSystems.Fluid.Sensors.TemperatureTwoPort | senTem | ||
| BuildingSystems.Fluid.Sensors.TemperatureTwoPort | senTem1 | ||
| Modelica.Blocks.Sources.RealExpression | realExpression | ||
| Modelica.Blocks.Sources.Constant | Rb_ref | ||
| Modelica.Blocks.Math.Add | error | ||
| BuildingSystems.Fluid.Sensors.TemperatureTwoPort | senTem2 | ||
| BuildingSystems.Fluid.Sensors.TemperatureTwoPort | senTem3 |
Contents
| Name | Description |
|---|---|
 Medium |
Revisions
-
May 15, 2019, by Jianjun Hu:
Replaced fluid source FixedBoundary with Boundary_pT. This is for #1072. -
June 2018, by Damien Picard:
First implementation.