University of Oulu

Hietaharju, Petri & Boström, Tobias (2018) Simulation Model for Borehole Heat Exchangers. In: Øi, Lars Erik et al. (eds.) Proceedings of The 59th Conference on Simulation and Modelling (SIMS 59), 26-28 September 2018, Oslo Metropolitan University, Norway, Linköping Electronic Conference Proceedings 153, 39, 277-283.

Simulation model for borehole heat exchangers

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Author: Hietaharju, Petri1; Boström, Tobias2
Organizations: 1Control Engineering , Faculty of Technology, University of Oulu, Finland
2Department of Physics and Technology , UiT, T he Arctic University of Norway, Norway
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.3 MB)
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Language: English
Published: Linköping University Electronic Press, 2018
Publish Date: 2018-12-14


Seasonal thermal energy storage (STES) offers a solution to address the mismatch between production and consumption by storing the produced excess heat for later use. Borehole heat exchangers (BHEs) are one of the sensible STES technologies. In this paper, a long-term simulation model for BHEs was developed. A finite line-source model for the heat transfer outside the borehole and a quasi-3D model for the heat transfer inside the borehole were applied in two region simulation approach. Fast Fourier transformation technique together with a cubic spline interpolation method were used for faster simulation time with time varying loads and longer simulation periods. The simulation method was validated using experimental data. Results showed that the simulation model is able to accurately model ground and fluid temperature evolution.

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Series: Linköping electronic conference proceedings
ISSN: 1650-3686
ISSN-E: 1650-3740
ISSN-L: 1650-3686
ISBN: 978-91-7685-494-5
Volume: 153
Pages: 277 - 283
Article number: 39
DOI: 10.3384/ecp18153277
Host publication: Proceedings of The 59th Conference on Simulation and Modelling (SIMS 59), 26-28 September 2018, Oslo Metropolitan University, Norway
Host publication editor: Øi, Lars Erik
Komulainen, Tiina
Bye, Robin T.
Nord, Lars O.
Conference: Conference on Simulation and Modelling
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Copyright information: © 2018 The Authors and Linköping University Electronic Press. Creative Commons license BY-NC.