Calculation Tool for Effective Borehole Thermal Resistance
Paper i proceeding, 2016

This paper presents a tool for computing thermal resistance of single U-tube ground heat exchangers placed in vertical boreholes. The tool is complete in the sense that it can compute both local and effective thermal resistances for either grouted or groundwater-filled boreholes. For grouted boreholes, it utilizes the highly accurate multipole method. For groundwater-filled boreholes, it utilizes recently-published convection correlations. Thermal property routines for water and water-antifreeze mixtures allow calculation of the interior convective thermal resistance for a wide range of cases.

Ground heat exchangers

Borehole thermal resistance

Ground source heat pumps

Författare

Jeffrey Spitler

Saqib Javed

Chalmers, Bygg- och miljöteknik, Installationsteknik

Rachel Grundmann

Proceedings of the 12th REHVA World Congress (Clima 2016), May 22-25, Aalborg, Denmark

Drivkrafter

Hållbar utveckling

Styrkeområden

Building Futures

Energi

Ämneskategorier

Energiteknik

Energisystem

Husbyggnad