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Calculation Tool for Effective Borehole Thermal Resistance

Jeffrey Spitler ; Saqib Javed (Institutionen för bygg- och miljöteknik, Installationsteknik ) ; Rachel Grundmann
Proceedings of the 12th REHVA World Congress (Clima 2016), May 22-25, Aalborg, Denmark (2016)
[Konferensbidrag, refereegranskat]

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.

Nyckelord: Ground source heat pumps, Ground heat exchangers, Borehole thermal resistance

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Denna post skapades 2016-05-24. Senast ändrad 2016-05-24.
CPL Pubid: 236850


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