3D transient heat transfer numerical analysis of multiple energy piles
This paper presents a three-dimensional (3D) transient heat transfer numerical model for multiple energy piles based on the finite volume method (FVM). The initial and boundary conditions are established and the effects of “thermal short-circulating” between two pipes of a U-tube in energy pile are...
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| Format: | Article |
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Elsevier
2017
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| Online Access: | https://eprints.nottingham.ac.uk/37876/ |
| _version_ | 1848795553162330112 |
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| author | Cui, Yuanlong Zhu, Jie |
| author_facet | Cui, Yuanlong Zhu, Jie |
| author_sort | Cui, Yuanlong |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | This paper presents a three-dimensional (3D) transient heat transfer numerical model for multiple energy piles based on the finite volume method (FVM). The initial and boundary conditions are established and the effects of “thermal short-circulating” between two pipes of a U-tube in energy pile are investigated. Thermal partial differential equations are discretized at the spatial nodal points and solved by linear approximation method. Temperature variations of working fluid, energy pile and its surrounding soil from simulation program are compared with experimental data to validate the developed model. In addition, the influences of fluid flow rate and U-tube shank spacing are analysed. It is established that the shank spacing should be set in a range of 0.06m to 0.10m to reduce heat transfer between the two pipes and meet the structural requirement. Meanwhile, the flow rate should be controlled in a range of 0.5m3/h to 0.7m3/h to avoid the low outlet fluid temperature and decrease the influence of “thermal short-circuiting”. |
| first_indexed | 2025-11-14T19:33:55Z |
| format | Article |
| id | nottingham-37876 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:33:55Z |
| publishDate | 2017 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-378762020-05-04T18:22:55Z https://eprints.nottingham.ac.uk/37876/ 3D transient heat transfer numerical analysis of multiple energy piles Cui, Yuanlong Zhu, Jie This paper presents a three-dimensional (3D) transient heat transfer numerical model for multiple energy piles based on the finite volume method (FVM). The initial and boundary conditions are established and the effects of “thermal short-circulating” between two pipes of a U-tube in energy pile are investigated. Thermal partial differential equations are discretized at the spatial nodal points and solved by linear approximation method. Temperature variations of working fluid, energy pile and its surrounding soil from simulation program are compared with experimental data to validate the developed model. In addition, the influences of fluid flow rate and U-tube shank spacing are analysed. It is established that the shank spacing should be set in a range of 0.06m to 0.10m to reduce heat transfer between the two pipes and meet the structural requirement. Meanwhile, the flow rate should be controlled in a range of 0.5m3/h to 0.7m3/h to avoid the low outlet fluid temperature and decrease the influence of “thermal short-circuiting”. Elsevier 2017-01-01 Article PeerReviewed Cui, Yuanlong and Zhu, Jie (2017) 3D transient heat transfer numerical analysis of multiple energy piles. Energy and Buildings, 134 . pp. 129-142. ISSN 1872-6178 Energy pile 3D numerical model FVM Thermal short-circulating Shank spacing http://www.sciencedirect.com/science/article/pii/S0378778816312683 doi:10.1016/j.enbuild.2016.10.032 doi:10.1016/j.enbuild.2016.10.032 |
| spellingShingle | Energy pile 3D numerical model FVM Thermal short-circulating Shank spacing Cui, Yuanlong Zhu, Jie 3D transient heat transfer numerical analysis of multiple energy piles |
| title | 3D transient heat transfer numerical analysis of multiple energy piles |
| title_full | 3D transient heat transfer numerical analysis of multiple energy piles |
| title_fullStr | 3D transient heat transfer numerical analysis of multiple energy piles |
| title_full_unstemmed | 3D transient heat transfer numerical analysis of multiple energy piles |
| title_short | 3D transient heat transfer numerical analysis of multiple energy piles |
| title_sort | 3d transient heat transfer numerical analysis of multiple energy piles |
| topic | Energy pile 3D numerical model FVM Thermal short-circulating Shank spacing |
| url | https://eprints.nottingham.ac.uk/37876/ https://eprints.nottingham.ac.uk/37876/ https://eprints.nottingham.ac.uk/37876/ |