modelInternalResistancesTwoUTube
Extends from IBPSA.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.PartialInternalResistances.
Information
This model simulates the internal thermal resistance network of a borehole segment in the case of a double U-tube borehole using the method of Bauer et al. (2011) and computing explicitely the fluid-to-ground thermal resistance Rb and the grout-to-grout resistance Ra as defined by Claesson and Hellstrom (2011) using the multipole method.
References
J. Claesson and G. Hellstrom. Multipole method to calculate borehole thermal resistances in a borehole heat exchanger. HVAC&R Research, 17(6): 895-911, 2011.
D. Bauer, W. Heidemann, H. Müller-Steinhagen, and H.-J. G. Diersch. Thermal resistance and capacity models for borehole heat exchangers . International Journal Of Energy Research, 35:312-320, 2011.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.SIunits.ThermalResistance | Rgg1_val | Thermal resistance between two neightbouring grout capacities, as defined by Bauer et al (2010) | |
| Modelica.SIunits.ThermalResistance | Rgg2_val | Thermal resistance between two grout capacities opposite to each other, as defined by Bauer et al (2010) | |
| Modelica.SIunits.HeatCapacity | Co_fil | borFieDat.filDat.dFil*borFieDat.filDat.cFil*hSeg*Modelica.Constants.pi*(borFieDat.conDat.rBor^2 - 4*borFieDat.conDat.rTub^2) | Heat capacity of the whole filling material |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_3 | Thermal connection for borehole wall | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_4 | Thermal connection for borehole wall | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rpg1 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgb1 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgg14 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgg21 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgg11 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rpg2 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgg12 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgb2 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgb3 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgb4 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rpg4 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgg13 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rpg3 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.ThermalResistor | Rgg22 | Grout thermal resistance | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | capFil1 | Heat capacity of the filling material | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | capFil2 | Heat capacity of the filling material | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | capFil3 | Heat capacity of the filling material | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | capFil4 | Heat capacity of the filling material |
Revisions
-
July 5, 2018, by Alex Laferrière:
Extended the model from a partial class. -
June, 2018, by Damien Picard:
First implementation.