Calculation Tool for Effective Borehole Thermal Resistance

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

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.

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Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Engineering and Technology
  • Energy Systems
  • Energy Engineering

Keywords

  • ground source heat pumps, ground heat exchangers, borehole thermal resistance, ground heat exchangers, borehole thermal resistance
Original languageEnglish
Title of host publicationProceedings of the 12th REHVA World Congress (Clima 2016)
Number of pages10
Publication statusPublished - 2016
Publication categoryResearch
Peer-reviewedYes
Event12th REHVA World Congress (Clima 2016) - Aalborg, Denmark
Duration: 2016 May 222016 May 25

Conference

Conference12th REHVA World Congress (Clima 2016)
CountryDenmark
CityAalborg
Period2016/05/222016/05/25

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