Energy Conversion and Management最新文献

筛选
英文 中文
Performance enhancement of PEM fuel cells using novel porous flow field designs 新型多孔流场设计提高PEM燃料电池性能
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-13 DOI: 10.1016/j.enconman.2026.121201
Huseyin Sevinc, Hanbey Hazar
{"title":"Performance enhancement of PEM fuel cells using novel porous flow field designs","authors":"Huseyin Sevinc,&nbsp;Hanbey Hazar","doi":"10.1016/j.enconman.2026.121201","DOIUrl":"10.1016/j.enconman.2026.121201","url":null,"abstract":"<div><div>This study aims to enhance the performance and efficiency of proton exchange membrane fuel cells (PEMFCs) by employing novel bipolar plate designs that integrate porous flow field structures. Five distinct models (P1–P5) featuring open-cell porous domains were developed and compared against a conventional triple-serpentine configuration using three-dimensional CFD simulations. The objective was to assess the effects of porous domain geometry on current density, pressure drop, reactant distribution, and net power output. The results revealed that all porous flow field models exhibited improved electrochemical behavior, especially in the ohmic and mass transport loss regions. Among them, the P1 model achieved the highest current density (1.45 A/cm<sup>2</sup>) and power density (0.58 W/cm<sup>2</sup>) at 0.4  V, outperforming the benchmark by 21.6% and 21.5%, respectively. Despite increased pressure drops due to internal flow resistance in porous domains, net power output improved across all models, with P1 providing a 17.6% increase compared to the serpentine design. Species distribution analysis showed more uniform hydrogen and oxygen transport in porous configurations, resulting in better mass utilization. Experimental validation confirmed strong agreement between simulation and test data for both the P1 and reference designs. The study concludes that properly configured porous flow fields can significantly enhance PEMFC performance by improving mass transfer, current generation, and thermal distribution. However, careful tuning of the porous region’s size, location, and number is essential to balance pressure losses and energy gains. These findings offer valuable insights for the next generation of high-performance and manufacturable PEMFC designs.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121201"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An energy efficient solar integrated vapor compression air conditioning system featuring an ejector subsystem driven by waste heat recovery 一种节能太阳能集成蒸汽压缩空调系统,采用废热回收驱动的弹射子系统
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-12 DOI: 10.1016/j.enconman.2026.121083
Seyedeh Zeinab Sajjadi, Bijan Farhanieh, Hossein Afshin
{"title":"An energy efficient solar integrated vapor compression air conditioning system featuring an ejector subsystem driven by waste heat recovery","authors":"Seyedeh Zeinab Sajjadi,&nbsp;Bijan Farhanieh,&nbsp;Hossein Afshin","doi":"10.1016/j.enconman.2026.121083","DOIUrl":"10.1016/j.enconman.2026.121083","url":null,"abstract":"<div><div>Solar-assisted vapor compression cycles often suffer from high condenser thermal loads due to the solar superheating stage. To address this thermodynamic drawback, this study proposes a novel enhanced ejector-assisted refrigeration cycle that recovers high-temperature waste heat to drive an integrated ejector subsystem without auxiliary power. Using a validated steady-state thermodynamic simulation, comprehensive energy and exergy analyses are conducted to evaluate the proposed system against a baseline reference cycle (Brc). This configuration achieves a dual objective: (1) the ejector generates additional cooling capacity, and (2) the main refrigerant is pre-cooled before the condenser, significantly reducing the thermal load. Results indicate that the enhanced cycle achieves up to a 22.27 % improvement in Coefficient of Performance (COP) and a 10.56 % higher exergy efficiency compared to the Brc, at 1.75 kW solar thermal input. While the solar collector is the main source of exergy destruction, its heat recovery integration proves highly effective, as the ejector subsystem shoulders 16.8 % of the total cooling load. Furthermore, among the evaluated low-Global Warming Potential (GWP) refrigerants, R152a and R600a demonstrated the most favorable performance, positioning them as promising substitutes for R134a in these advanced solar cooling applications.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121083"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transient analysis of solar-driven hydrogen and sulfur production from acid gas with thermal energy storage 太阳能驱动酸气制氢和制硫的瞬态分析
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-12 DOI: 10.1016/j.enconman.2026.121182
Sajjad Mousaei, Meghdad Saffaripour, Mehdi Ashjaee
{"title":"Transient analysis of solar-driven hydrogen and sulfur production from acid gas with thermal energy storage","authors":"Sajjad Mousaei,&nbsp;Meghdad Saffaripour,&nbsp;Mehdi Ashjaee","doi":"10.1016/j.enconman.2026.121182","DOIUrl":"10.1016/j.enconman.2026.121182","url":null,"abstract":"<div><div>Acid gas, a byproduct of natural gas sweetening, mainly contains toxic hydrogen sulfide (H<sub>2</sub>S) and carbon dioxide (CO<sub>2</sub>). Decomposing H<sub>2</sub>S reduces harmful emissions while producing valuable hydrogen and sulfur. This study presents a transient techno-economic analysis of a solar-driven system for co-producing carbon-free hydrogen and sulfur via thermal H<sub>2</sub>S decomposition. The primary novelty of this work lies in the development of a transient framework for solar-powered thermal decomposition of H<sub>2</sub>S, incorporating thermal energy storage to enable continuous, year-round production of hydrogen and sulfur under realistic solar intermittency conditions. The system comprises a heliostat field, a solar tower, a molten-salt thermal energy storage, a palladium–silver membrane for hydrogen separation, and a purification and compression unit. The thermal energy storage, with hot and cold tanks, enables continuous year-round operation. Designed for Bushehr, near major gas refineries with high solar potential, the system decomposes acid gas in a shell-and-tube reactor heated by molten salt at up to 1280 °C. A plug flow reactor model with a four-step kinetic mechanism predicts 30% H<sub>2</sub>S conversion, yielding hydrogen and sulfur production efficiencies of 23% and 10.94%, respectively. Average annual outputs are 39 kg/h of hydrogen and 0.389 kg/s of sulfur, with 2.2 kg/s of superheated steam recovered from waste heat. The overall energy and exergy efficiencies are 69.66% and 25.35%, respectively. The total investment is $19.45 million, with a hydrogen cost of $10.1/kg, a 6.34-year payback, and a 20-year net present value of $17.1 million, confirming the system’s technical and economic viability.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121182"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Underground hydrogen storage capacity in saline aquifer 盐碱层地下储氢能力
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-12 DOI: 10.1016/j.enconman.2026.121195
Chuanjie Ren , Xiaojiang Li , Ziqing Pan , Kaiqiang Zhang
{"title":"Underground hydrogen storage capacity in saline aquifer","authors":"Chuanjie Ren ,&nbsp;Xiaojiang Li ,&nbsp;Ziqing Pan ,&nbsp;Kaiqiang Zhang","doi":"10.1016/j.enconman.2026.121195","DOIUrl":"10.1016/j.enconman.2026.121195","url":null,"abstract":"<div><div>Underground hydrogen storage in saline aquifers is an irreplaceable option for large-scale hydrogen usage amid the transition to net-zero, with the urgent demand for clean energy. However, accurate hydrogen storage capacity evaluation is currently hindered by the lack of accessible analytical tools that simultaneously account for engineering constraints and hydrogen-specific biogeochemical losses. To address these gaps, this study hypothesizes that explicitly coupling engineering constraints with quantitative sink terms for microbial consumption and dissolution and diffusive loss will define a net effective capacity that provides a rigorous, safety-constrained baseline distinct from static volumetric estimates. We developed a novel first-order basin-scale screening tool that integrates transport dynamics, equations of state. This framework serves as a theoretical upper-bound estimator designed to evaluate the maximum hydrogen storage capacity subject to engineering constraints and quantitative losses, distinct from predictive reservoir simulations. Applying of the model to a representative basin-scale aquifer, a set of 10 wells with inter-well distance of 5.2 km was determined to reach 1.5 Gt storage volume. Moreover, a total of eleven factors, regarding the reservoir parameters, fluid properties, engineering strategies, and their effects on the hydrogen storage capacity, were specifically analyzed. Results show that long operational time (i.e., 1000 years) usually results in increased storage volume to reach the maximum storage capacity. We conclude that while saline aquifers offer huge storage potential, their technical feasibility is strictly governed by the coupling of hydraulic injectivity and operational time. Overall, this study provides a powerful tool for accurately and efficiently quantifying hydrogen storage capacity and optimizing strategies in saline aquifer.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121195"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advanced computational fluid dynamic analysis of microclimate effects on solar photovoltaics for the utility-scale solar industry 微气候对公用事业规模太阳能产业太阳能光伏发电影响的先进计算流体动力学分析
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-05 DOI: 10.1016/j.enconman.2026.121153
Sahan Trushad Wickramasooriya Kuruneru, Kenrick Anderson, Andrew Beath
{"title":"Advanced computational fluid dynamic analysis of microclimate effects on solar photovoltaics for the utility-scale solar industry","authors":"Sahan Trushad Wickramasooriya Kuruneru,&nbsp;Kenrick Anderson,&nbsp;Andrew Beath","doi":"10.1016/j.enconman.2026.121153","DOIUrl":"10.1016/j.enconman.2026.121153","url":null,"abstract":"<div><div>An advanced numerical model is developed to unravel novel fluid flow physics and heat transfer mechanisms of three distinct bifacial solar photovoltaic panels (BPVs), namely 25° fixed-tilt, 90° vertical-, and waves-oriented BPVs. To this end, a conjugate heat transfer (CHT) numerical model is developed in the open-source computational fluid dynamics (CFD) software OpenFOAM to unravel novel buoyant convective-radiative fluid flow physics and microclimate of the three distinct BPVs in the region of Newcastle NSW Australia. The CFD results show that the air flow pathways, panel temperature distribution and air temperature around the panels vary considerably with differing geometric panel morphology and climate conditions. Distinct flow patterns are observed in different panels of the solar farm. It is also found that the number of air recirculation zones between successive panels in a solar farm vary due to various factors such as head-on wind velocity magnitudes, wind directions, and panel tilt and panel spacing thereby altering the spatial temperature distribution of all PV panels. This also has profound implications on the local air velocities and heat transfer coefficients of BPVs. The effects of wind directions on BPVs have distinct heat transfer characteristics. Scientists and engineers in the photovoltaic industry can harness this approach to broaden the applicability and generalizability of PV heat transfer models by developing and implementing advanced CFD models to provide various correlations between heat transfer coefficients and head-on wind velocities and wind directions. Furthermore, the numerical model and the results can be harnessed to facilitate and guide the system optimization of BPVs for various industries such as agriculture and mining.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121153"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Techno-economic assessment of hydrogen production from biomass and RDF gasification with integrated carbon Capture: A Brazilian Perspective 结合碳捕获的生物质和RDF气化制氢的技术经济评估:巴西视角
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-12 DOI: 10.1016/j.enconman.2026.121185
Diogo Josué de Souza Santos , Alisson Aparecido Vitoriano Julio , York Castillo Santiago , Osvaldo José Venturini , José Carlos Escobar Palacio
{"title":"Techno-economic assessment of hydrogen production from biomass and RDF gasification with integrated carbon Capture: A Brazilian Perspective","authors":"Diogo Josué de Souza Santos ,&nbsp;Alisson Aparecido Vitoriano Julio ,&nbsp;York Castillo Santiago ,&nbsp;Osvaldo José Venturini ,&nbsp;José Carlos Escobar Palacio","doi":"10.1016/j.enconman.2026.121185","DOIUrl":"10.1016/j.enconman.2026.121185","url":null,"abstract":"<div><div>For this study, sugarcane bagasse and Refuse-Derived Fuel from Municipal Solid Waste gasification were investigated for low-emission hydrogen production. This is done through a unique simulation that integrates Aspen Plus® and Hysys® to present a detailed analysis considering the Brazilian availability of sugarcane bagasse and Refuse-Derived Fuel. A chemical equilibrium model was developed and validated in Aspen Plus® using various gasifying agents. A sensitivity analysis of the equivalence ratio was conducted, revealing a temperature increase from 700 to 900°C when using air as the gasifying agent. The gasification temperature ranged from 550 to 750°C when employing air and steam with a fixed SBR of 1. The highest hydrogen volumetric fraction for Refuse-Derived Fuel was 0.25, while for sugarcane bagasse gasification, it was 0.22. Additionally, the addition of shift reactors favors hydrogen production, increasing the hydrogen mass flow rate by approximately 90% in the gasification plant. The plants achieved an overall efficiency of around 50% for all evaluated scenarios, but the efficiency was reduced to about 40% with the addition of the carbon capture system. Besides, the levelized cost of hydrogen ranged between 4 and 4.5 US$/kgH<sub>2</sub> and 5 and 6 US$/kgH<sub>2</sub> in the gasification system with carbon capture. The results of this study suggest that biomass-hydrogen-based processes are promising options contributing to H<sub>2</sub> production capacity, but improvements are needed to achieve significant volumes and competitive costs.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121185"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146160949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical model fitting of lithium-ion cells considering temperature-dependent transport properties 考虑温度相关输运性质的锂离子电池电化学模型拟合
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-11 DOI: 10.1016/j.enconman.2026.121164
Facundo Rivoir , Álvaro Fogué Robles , Santiago Martinez-Boggio , Erika Teliz , Antonio García
{"title":"Electrochemical model fitting of lithium-ion cells considering temperature-dependent transport properties","authors":"Facundo Rivoir ,&nbsp;Álvaro Fogué Robles ,&nbsp;Santiago Martinez-Boggio ,&nbsp;Erika Teliz ,&nbsp;Antonio García","doi":"10.1016/j.enconman.2026.121164","DOIUrl":"10.1016/j.enconman.2026.121164","url":null,"abstract":"<div><div>Understanding how lithium-ion batteries behave under different thermal conditions is essential for predicting performance in electric mobility and energy storage applications. Low temperatures are known to severely limit usable energy and power capability, motivating the need for models that accurately represent transport limitations at sub-zero environments. This study investigates whether a temperature-sensitive pseudo-two-dimensional electrochemical model can capture lithium-ion cell behavior across a wide thermal range without requiring full parameter re-identification at each condition. The model was calibrated for a commercial cylindrical lithium-ion cell using dynamic current profiles and surface temperature measurements obtained between − 10 °C and 25 °C, and incorporated temperature-dependent corrections to ionic conductivity and mass transport properties. The calibrated model, which includes eighteen fitting parameters, reproduced voltage dynamics with root-mean-square errors below 0.049 V and relative voltage errors below 0.6 % across all temperatures. When implemented in a full electric-vehicle simulation under the Worldwide Harmonized Light-Duty Test Cycle at − 10 °C, 0 °C, 25 °C, and 40 °C, the predicted driving range varied from 266 km at − 10 °C to 290 km at 40 °C, with dissipated energy decreasing from 4.70 kWh at − 10 °C to below 1 kWh at warm conditions. These results demonstrate that the proposed modeling framework captures seasonal performance variations and provides a reliable basis for vehicle-level analysis and thermal-management design.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121164"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application-orientated design of micro thermoelectric coolers using a Machine learning-driven reverse framework 基于机器学习驱动的逆向框架的微型热电冷却器面向应用的设计
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-11 DOI: 10.1016/j.enconman.2026.121203
Shucheng Bao , Wei Zhu , Lixing Liang , Man Zhou , Tian Qiu , Shijie Zhao , Yuan Deng
{"title":"Application-orientated design of micro thermoelectric coolers using a Machine learning-driven reverse framework","authors":"Shucheng Bao ,&nbsp;Wei Zhu ,&nbsp;Lixing Liang ,&nbsp;Man Zhou ,&nbsp;Tian Qiu ,&nbsp;Shijie Zhao ,&nbsp;Yuan Deng","doi":"10.1016/j.enconman.2026.121203","DOIUrl":"10.1016/j.enconman.2026.121203","url":null,"abstract":"<div><div>Micro thermoelectric coolers (μ-TECs) represent promising solution for “hot-spot” local cooling within confined spaces. However, systematically conducting the full-parameter optimization design of μ-TECs tailored to specific applications remains a formidable challenge for researchers, attributed to the intricate influencing parameters and manufacturing processes. Herein, a novel knowledge-data-driven research paradigm is proposed for the multifactorial multi-objective optimization of customized μ-TECs capitalizing the rational combination of the numerical analysis, finite element method (FEM) and deep neural networks (DNNs). Specifically, this approach is applied to the customized design of two distinct μ-TECs that function as heat pumps and coolers design, respectively, providing more comprehensive device-level insights. Regarding the most rational multifactorial multi-objective optimization strategy, an evaluation criterion for parameter priority is presented to guide the materials and interfaces development based on the application-orientated optimization profits. Furthermore, a database-enabled reverse framework is developed for deducing optimal interfacial and geometric design that align with specific materials, scenarios, and requirement. Consequently, the batch-produced 18-pair modules designed through the reverse framework achieve the maximum cooling density and temperature of 29.1 W cm<sup>−2</sup> and 70.3 K, respectively. Notably, our customized devices provide a superior cooling density of 8.4 W cm<sup>−2</sup> in the target applications requiring stable cooling of 50 K, surpassing most advanced general-purpose products. This study offers a high-efficient knowledge-data-driven methodology for the rapid and reverse design of high-performance μ-TECs with tailored application scenarios and requirements.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121203"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Machine learning driven optimization of an innovative microbial fuel cell performance: A holistic approach integrating electrochemical, thermodynamic and biological parameters 机器学习驱动的创新微生物燃料电池性能优化:集成电化学、热力学和生物参数的整体方法
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-13 DOI: 10.1016/j.enconman.2026.121197
Mohammad Hossein Sabouri, Mohammad Hasan Khoshgoftar Manesh, Seyed Alireza Mousavi Rabeti
{"title":"Machine learning driven optimization of an innovative microbial fuel cell performance: A holistic approach integrating electrochemical, thermodynamic and biological parameters","authors":"Mohammad Hossein Sabouri,&nbsp;Mohammad Hasan Khoshgoftar Manesh,&nbsp;Seyed Alireza Mousavi Rabeti","doi":"10.1016/j.enconman.2026.121197","DOIUrl":"10.1016/j.enconman.2026.121197","url":null,"abstract":"<div><div>Effective management of municipal wastewater is critical for resource recovery and sustainable protection of natural ecosystems, yet conventional treatment processes remain highly energy intensive. However, many existing microbial fuel cell systems often suffer from limited power output, high material costs, and reduced efficiency in membrane–less configurations. This study hypothesizes that an air cathode, membrane-less, submersible, and replaceable microbial fuel cell can simultaneously enhance wastewater treatment efficiency and electricity generation under optimized biological and operating conditions. A laboratory-scale system was evaluated over five experimental phases using municipal wastewater amended with activated sludge. Electrochemical and thermodynamic analyses were conducted alongside artificial illumination, Nitrobacter supplementation, and machine learning-based prediction of voltage and biological parameters. The system achieved maximum chemical oxygen demand and biological oxygen demand removal efficiencies of 99% and 98% within three days. A peak power density of 25  mW/m<sup>2</sup> was obtained, with optimal performance observed at 30–35°C and a maximum entropy generation of 0.2 mW/K. The machine learning models demonstrated strong predictive accuracy, with R<sup>2</sup> = 0.9 for voltage and 0.94 for key wastewater parameters. These results indicate that the proposed microbial fuel cell configuration provides a promising and scalable pathway for efficient wastewater treatment and bioenergy recovery, further enhanced through microbial augmentation and optimized operating conditions.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121197"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of methane hydrate dissociation behavior in porous media by the lattice Boltzmann method 用晶格玻尔兹曼方法研究甲烷水合物在多孔介质中的解离行为
IF 10.9 1区 工程技术
Energy Conversion and Management Pub Date : 2026-04-01 Epub Date: 2026-02-13 DOI: 10.1016/j.enconman.2026.121208
Ran Yang, Linsen Zhan, Hailong Lu
{"title":"Investigation of methane hydrate dissociation behavior in porous media by the lattice Boltzmann method","authors":"Ran Yang,&nbsp;Linsen Zhan,&nbsp;Hailong Lu","doi":"10.1016/j.enconman.2026.121208","DOIUrl":"10.1016/j.enconman.2026.121208","url":null,"abstract":"<div><div>Methane hydrate dissociation is a complicated multiple physicochemical processes, and fundamental understanding of hydrate dynamic behavior in porous media is essential for hydrate development. In this study, we develop a coupled lattice Boltzmann model to simulate hydrate dissociation induced by fluid extraction in porous media. The model simultaneously accounts for fluid flow, heat transfer, mass transport, intrinsic kinetic reaction, and the evolution of the solid matrix. Systematic analyses of dissociation behavior and its intrinsic mechanisms are conducted by considering boundary conditions, dimensionless numbers, and pore structures. Hydrate dissociation experiences three distinct stages: (1) rapid response to surrounding condition change, (2) moderate dissociation stage with an approximately linear decay, and (3) quasi-equilibrium stage. The governing mechanisms—hydrate intrinsic kinetics, heat transfer, and mass transfer—vary continuously as hydrate saturation declines. Specifically, when the reaction rate is low and mass transfer is negligible, the process transitions from a joint kinetics-heat transfer control regime (<span><math><mrow><msub><mrow><mi>Da</mi></mrow><mi>T</mi></msub><mo>&gt;</mo><mn>0.1</mn></mrow></math></span>) to a kinetics-dominated regime (<span><math><mrow><msub><mrow><mi>Da</mi></mrow><mi>T</mi></msub><mo>&lt;</mo><mn>0.1</mn></mrow></math></span>). Regarding boundary conditions, a higher concentration gradient accelerates the reaction, whereas higher flow velocities lead to lower reaction rates due to enhanced heat loss. The dissociation rate decreases monotonically with the thermal Péclet number (<span><math><mrow><msub><mrow><mi>Pe</mi></mrow><mi>T</mi></msub></mrow></math></span>) increasing, whereas it first rises and then falls with the mass Péclet number (<span><math><mrow><msub><mrow><mi>Pe</mi></mrow><mi>m</mi></msub></mrow></math></span>) increasing, revealing an optimal range between 0.036 and 0.144. In terms of pore structure, simple-cubic structures exhibit higher dissociation rates than face-centered-cubic structures due to shorter heat transfer paths. The results obtained from this study provide new pore-scale insights into hydrate dissociation dynamics and provide a basis for forecasting hydrate recovery.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"353 ","pages":"Article 121208"},"PeriodicalIF":10.9,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146186741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信
小红书