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.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the 12th REHVA World Congress (Clima 2016) |
| Number of pages | 10 |
| Publication status | Published - 2016 |
| Event | 12th REHVA World Congress (Clima 2016) - Aalborg, Denmark Duration: 2016 May 22 → 2016 May 25 |
Conference
| Conference | 12th REHVA World Congress (Clima 2016) |
|---|---|
| Country/Territory | Denmark |
| City | Aalborg |
| Period | 2016/05/22 → 2016/05/25 |
Subject classification (UKÄ)
- Engineering and Technology
- Energy Systems
- Energy Engineering
Free keywords
- ground source heat pumps, ground heat exchangers, borehole thermal resistance,
- ground heat exchangers,
- borehole thermal resistance