A pure python library for computing thermal resistance within single-u, double-u, and coaxial grouted borehole heat exchangers. For single and double u-tube configurations, the methods use the 1st-order closed-form multipole approximations, which typically produces results with less than 1% error when compared to the 10th-order multipole method. Coaxial borehole methods apply a simple 1D resistance network method.
This is intended to be a lightweight library that can be easily imported into any other Python tool, with no bulky dependencies.
Documentation for BHResist can be found at https://bhresist.readthedocs.io.
Mitchell, Matt, Adams, Sonja, Lee, Edwin, and Swindler, Alexander. BHResist [SWR-25-57]. Computer Software. https://github.com/NREL/BHResist. USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Office. 04 Apr. 2025. Web. doi:10.11578/dc.20250421.3.
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