Optimization of the depressurization rate and stepwise strategy for hydrate exploitation using a genetic algorithm-based depressurization method

Ge, Kunpeng; Zhang, Xinyu; Wang, Jiaqi; Cheng, Chuangxiao; He, Jiale

doi:10.1016/j.ces.2022.118218

Cited by 14 publications

(5 citation statements)

References 19 publications

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“…It is noteworthy that the hydrogen peroxide reduction reaction is closely related to the pH value of the electrolyte. In an alkaline solution, hydrogen peroxide reacts with hydroxide and exists as HO 2 À (eqn (7)):…”

Section: Cathode Reaction Kineticsmentioning

confidence: 99%

“…Furthermore, they are accompanied by the production of pollutants, which are inherently inefficient and environmentally harmful. [4][5][6][7][8][9] In contrast, fuel cells are advantageous since they can instantly provide energy on demand and exhibit a long operating life, thus exhibiting an energy conversion efficiency of 50-70% in practical applications. 10 They combine the benefits of batteries [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] and fuel engines, while eliminate significant disadvantages.…”

Section: Introductionmentioning

confidence: 99%

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Research progress on direct borohydride fuel cells

Liu,

Zhang,

Zhao

et al. 2024

Chem. Commun.

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Section: Cathode Reaction Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research progress on direct borohydride fuel cells

Liu,

Zhang,

Zhao

et al. 2024

Chem. Commun.

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“…Ou et al [22] constructed a physical energy consumption model for battery electric vehicles based on travel surveys, which was associated with a statistical model. Their findings suggested that the cost-effectiveness of lightweighting for extending pure electric vehicle mileage varied with factors such as income-related daily mileage constraints, driving modes, and lightweight technology costs.Ge et al [23] amalgamated the hydrate dissociation model with GA for the first time, offering guidance for optimising the production efficiency of decompression hydrate mining. Li et al [24] compared the heat transfer characteristics of single-phase convection, subcooled boiling, and saturated boiling under rolling and vertical conditions.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Vehicle Lightweight Design Process with Genetic Algorithm-Optimized BP Neural Network and Topology Optimization: A Comprehensive Study

Liao,

Zhong,

2024

Preprint

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Amid the swift progression of the global automobile industry, the aspiration for lightweight vehicle design has surfaced as a crucial approach to boost fuel efficiency and curtail environmental impact. The objective of this study revolves around achieving holistic optimization of vehicle structure via detailed scrutiny of vehicle process characteristics, amalgamated with a Back Propagation neural network (BPNN) optimized by a genetic algorithm (GA) and a topology optimization (TO) method.The process initiates with an examination of the vehicle's technical characteristics, succeeded by an optimization protocol that couples GA with BPNN. This exhaustive optimization procedure derives the best-fit values of design parameters and identifies the globally optimal lightweight design approach. Subsequently, a comprehensive structural optimization is actualized by modifying the topological distribution of the structure.A simulation experiment of the conceptual car body beam skeleton is conducted as a conclusive step, and the anti-collision capacity of the car body beam skeleton is assessed by measuring deformation intrusion. The findings reveal that in the vehicle topology optimization, a comparative analysis of pre and post-optimization results indicates an improved topological density across diverse sections. The topological density of the vehicle's frontal structure escalates from 0.75 to 0.8. Following optimization, the stiffness assessment records a marginal increase (within the range of 0.02–0.05), implying that the lightweight design does not compromise the general rigidity of the structure.The optimized body structure manifests superior crashworthiness in the crash test: the deformation intrusion diminishes by 27% in front-end collisions. In side impacts, the deformation and intrusion at critical points are reduced by 13.15% to 10% respectively. The comprehensive method proposed herein proves to be an efficient strategy to actualize the lightweight design of vehicles.

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“…However, the test indicates that current hydrate development technology is still unable to commercialize hydrates. To realize commercial production, a series of laboratory-scale studies on improving the efficiency of natural gas hydrate production have been carried out. − …”

Section: Introductionmentioning

confidence: 99%

Research on Natural Gas Production Behavior Using Stepwise Depressurization with a Horizontal Well

Wang,

Zhang,

et al. 2023

Energy Fuels

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The commercial development of natural gas hydrates (NGH) is important for addressing the future energy requirements due to the depletion of conventional sources. Analyzing and understanding the effectiveness of different production methods under various well configurations are essential for the exploitation of NGH. According to the typical physical properties of hydrate reservoirs in the South China Sea, a simulation model was established. The natural gas production behavior was compared and analyzed via one-time rapid depressurization and stepwise depressurization using a horizontal well. The results showed that the heat and mass transfer capacities in a horizontal well configuration are enhanced due to gravity, and the water yield is decreased. For a horizontal well, stepwise depressurization is more advantageous than the one-time rapid depressurization method. Stepwise depressurization can significantly reduce water production and increase external energy input, which heats up the reservoir quickly. In addition, the horizontal well configuration with stepwise depressurization has a wider application range and can be used in various hydrate reservoirs with different physical properties. Although the average gas production rate during stepwise depressurization with a horizontal well configuration is lower, the gas−water ratio, thermal efficiency, and comprehensive exploitation economy are higher.

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Optimization of the depressurization rate and stepwise strategy for hydrate exploitation using a genetic algorithm-based depressurization method

Cited by 14 publications

References 19 publications

Research progress on direct borohydride fuel cells

Research progress on direct borohydride fuel cells

Enhancing Vehicle Lightweight Design Process with Genetic Algorithm-Optimized BP Neural Network and Topology Optimization: A Comprehensive Study

Research on Natural Gas Production Behavior Using Stepwise Depressurization with a Horizontal Well

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