BuildingSystems.Fluid.Geothermal.Borefields.TwoUTubes

# .BuildingSystems.Fluid.Geothermal.Borefields.TwoUTubes

Borefield model containing double U-tube boreholes

## Information

This model simulates a borefield containing one or many double U-tube boreholes using the parameters in the `borFieDat` record.

Heat transfer to the soil is modeled using only one borehole heat exchanger. The fluid mass flow rate into the borehole is divided to reflect the per-borehole fluid mass flow rate. The borehole model calculates the dynamics within the borehole itself using an axial discretization and a resistance-capacitance network for the internal thermal resistances between the individual pipes and between each pipe and the borehole wall.

## Revisions

- July 2018, by Alex Laferrière:
  Extended partial model and changed documentation to reflect the new approach used by the borefield models.
- July 2014, by Damien Picard:
  First implementation.

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