Please use this identifier to cite or link to this item: http://dx.doi.org/10.25673/118542
Title: Towards sustainable shallow geothermal systems : combined simulation-optimization of borehole heat exchanger fields under uncertainty
Author(s): Soltan Mohammadi, HesamLook up in the Integrated Authority File of the German National Library
Referee(s): Bayer, PeterLook up in the Integrated Authority File of the German National Library
Menberg, KathrinLook up in the Integrated Authority File of the German National Library
Granting Institution: Martin-Luther-Universität Halle-Wittenberg
Issue Date: 2025
Extent: 1 Online-Ressource (xxiv, 113 Seiten)
Type: HochschulschriftLook up in the Integrated Authority File of the German National Library
Type: PhDThesis
Exam Date: 2025-02-27
Language: English
URN: urn:nbn:de:gbv:3:4-1981185920-1205002
Abstract: The unbalanced performance of borehole heat exchangers (BHEs) causes subsurface thermal anomalies, reducing geothermal system efficiency and posing environmental risks. To address this, a sequential simulation-optimization framework is proposed to dynamically adjust energy demand distribution among BHEs over long-term operation. Optimized operation plans are refined by integrating monitoring data with model-based simulations. In the following, an embedded model calibration strategy utilizes parameter estimation to improve BHE field optimization. The effectiveness of this approach is demonstrated using a synthetic BHE case with various transient groundwater velocity fluctuation patterns. Finally, a Bayesian inference-based stochastic framework is developed to characterize multiple correlated unknown parameters in a BHE field with heterogeneous subsurface settings and groundwater flow, enhancing the reliability of temperature simulations.
URI: https://opendata.uni-halle.de//handle/1981185920/120500
http://dx.doi.org/10.25673/118542
Open Access: Open access publication
License: (CC BY-NC-ND 4.0) Creative Commons Attribution NonCommercial NoDerivatives 4.0(CC BY-NC-ND 4.0) Creative Commons Attribution NonCommercial NoDerivatives 4.0
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