Design and optimization of deep coaxial borehole heat exchangers for cold sedimentary basins

Gascuel, Violaine; Raymond, Jasmin; Rivard, Christine; Marcil, Jean-Sebastien; Comeau, Félix-Antoine

doi:10.1016/j.geothermics.2022.102504

Cited by 24 publications

(4 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The developed models have been used to understand (i) the influence of different engineering and geological parameters (Dijkshoorn et al 2013;Liu et al 2019;Renaud et al 2020;Brown et al 2021;Brown and Howell 2023;; (ii) the varying modes of operation, i.e. constant base load versus intermittent (Cai et al 2019;Jiao et al 2021;Huang et al 2022;Perser and Frigaard 2022); (iii) system optimisation (Pan et al 2020;Gascuel et al 2022), and (iv) the potential to scale the technology using arrays (Cai et al 2021Zhang et al 2022aZhang et al , 2022b. Many studies have arrived at similar conclusions regarding the sensitivity of DBHE performance to these parameters, as described in the following sections.…”

Section: Heat Extractionmentioning

confidence: 99%

“…highlighted that increasing flow rates leads to an increase in thermal power extraction, but also an increase in pressure drop. Increased energy expenditure in the circulation pump results in lower net energy production and lower coefficients of performance (Brown et al 2021;Gascuel et al 2022;. A trade-off exists for mass flow rate between pressure drop and maximum thermal power output.…”

Section: Impact Of Engineering Parametersmentioning

confidence: 99%

“…Similarly, optimal parametric studies can also help to identify key parameters that influence thermal and hydraulic performance (e.g. Brown et al (2021); Gascuel et al (2022); Jia et al (2022)).…”

Section: Impact Of Engineering Parametersmentioning

confidence: 99%

See 2 more Smart Citations

A comprehensive review of deep borehole heat exchangers (DBHEs): subsurface modelling studies and applications

Kolo,

Brown,

Nibbs

et al. 2024

Geotherm Energy

View full text Add to dashboard Cite

Deep borehole heat exchangers (DBHEs) with depths exceeding 500 m have been researched comprehensively in the literature, focusing on both applications and subsurface modelling. This review focuses on conventional (vertical) DBHEs and provides a critical literature survey to analyse (i) methodologies for modelling; (ii) results from heat extraction modelling; (iii) results from modelling deep borehole thermal energy storage; (iv) results from heating and cooling models; and (v) real case studies. Numerical models generally compare well to analytical models whilst maintaining more flexibility, but often with increased computational resources. Whilst in-situ geological parameters cannot be readily modified without resorting to well stimulation techniques (e.g. hydraulic or chemical stimulation), engineering system parameters (such as mass flow rate of the heat transfer fluid) can be optimised to increase thermal yield and overall system performance, and minimise pressure drops. In this active research area, gaps remain, such as limited detailed studies into the effects of geological heterogeneity on heat extraction. Other less studied areas include: DBHE arrays, boundary conditions and modes of operation. A small number of studies have been conducted to investigate the potential for deep borehole thermal energy storage (BTES) and an overview of storage efficiency metrics is provided herein to bring consistency to the reporting of thermal energy storage performance of such systems. The modifications required to accommodate cooling loads are also presented. Finally, the active field of DBHE research is generating a growing number of case studies, particularly in areas with low-cost drilling supply chains or abandoned hydrocarbon or geothermal wells suitable for repurposing. Existing and planned projects are thus presented for conventional (vertical) DBHEs. Despite growing interest in this area of research, further work is needed to explore DBHE systems for cooling and thermal energy storage.

show abstract

Section: Heat Extractionmentioning

confidence: 99%

Section: Impact Of Engineering Parametersmentioning

confidence: 99%

See 1 more Smart Citation

A comprehensive review of deep borehole heat exchangers (DBHEs): subsurface modelling studies and applications

Kolo,

Brown,

Nibbs

et al. 2024

Geotherm Energy

View full text Add to dashboard Cite

show abstract

“…Gascuel et al analyzed the effect of depth, inner tube material, and well diameter on heat transfer performance using numerical simulations. They concluded that optimal performance was obtained from the deepest and largest diameter wells by selecting HDPE for the inner tube material [15]. Linrui Jia et al developed an improved varied heat flux model for the CBHE using the superposition method, taking the vertical inhomogeneity of the specific heat flux into account.…”

Section: Introductionmentioning

confidence: 99%

Research on the Heat Extraction Performance Optimization of Spiral Fin Coaxial Borehole Heat Exchanger Based on GA–BPNN–QLMPA

Fu,

Guo,

Yan

et al. 2023

Processes

View full text Add to dashboard Cite

Geothermal energy, a renewable energy source with enormous reserves independent of the external environment, is essential for reducing carbon emissions. Spiral fin coaxial borehole heat exchanger (SFCBHE) is vital for geothermal energy extraction. Its heat extraction performance requires further improvements for efficient performance that consider the structural sizes and installation positions of the SFCBHE and the nonlinear coupling with respect to several factors. The heat extraction performance of SFCBHE is optimized using a combination of genetic algorithm–back-propagation neural network (GA–BPNN) and the Q-learning-based marine predator algorithm (QLMPA). This study analyzes and compares the effects of geothermal energy extraction of smooth pipe TY-1, structure before optimization TY-2, and optimized structure TY-3. Following optimization with GA–BPNN–QLMPA, the heat extraction performance of TY-3 is enhanced by 30.8% and 23.6%, respectively. The temperature of maximum extraction is improved by 26.8 K and 24.0 K, respectively. The power of maximum heat extraction is increased by 148.2% and 109.5%, respectively. The optimization method can quickly and accurately determine the heat extraction performance for different structural sizes and installation positions of the SFCBHE. These findings are crucial for developing high-performance SFCBHE and efficiently using geothermal energy.

show abstract

Performance enhancement, economic analysis, and futuristic insight of single-well medium-deep and deep geothermal systems

Li,

Anand,

Huang

et al. 2024

Front. Energy

View full text Add to dashboard Cite

Design and optimization of deep coaxial borehole heat exchangers for cold sedimentary basins

Cited by 24 publications

References 55 publications

A comprehensive review of deep borehole heat exchangers (DBHEs): subsurface modelling studies and applications

A comprehensive review of deep borehole heat exchangers (DBHEs): subsurface modelling studies and applications

Research on the Heat Extraction Performance Optimization of Spiral Fin Coaxial Borehole Heat Exchanger Based on GA–BPNN–QLMPA

Performance enhancement, economic analysis, and futuristic insight of single-well medium-deep and deep geothermal systems

Contact Info

Product

Resources

About