Energy Conversion and Management最新文献

Environmental comparison of dry and hybrid condensing systems in concentrating solar power tower plants 聚光太阳能塔式电站干式与混合式冷凝系统的环境比较

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-30 DOI: 10.1016/j.enconman.2025.119978

M.A. Palmero-González, E. Batuecas, M. Fernández-Torrijos, C. Marugán-Cruz

{"title":"Environmental comparison of dry and hybrid condensing systems in concentrating solar power tower plants","authors":"M.A. Palmero-González, E. Batuecas, M. Fernández-Torrijos, C. Marugán-Cruz","doi":"10.1016/j.enconman.2025.119978","DOIUrl":"10.1016/j.enconman.2025.119978","url":null,"abstract":"<div><div>This study presents a comprehensive environmental assessment of hybrid and dry condensing systems in central tower Concentrated Solar Power (CSP) plants. Using Life Cycle Assessment (LCA) methodology, the research analyses two optimized configurations based on the recently constructed Redstone CSP plant in South Africa. The study evaluates their environmental impacts, focusing on climate change and water use categories, while also optimizing operational parameters. The LCA results indicate that the dry system configuration significantly reduces water consumption, with 5.1 l/kWh compared to 49 l/kWh for the hybrid system. Although the hybrid configuration generates slightly more energy (582 GWh/year) than the dry configuration (574 GWh/year), the dry system performs better in terms of climate change impact, emitting 6.22 g CO<sub>2</sub>/kWh compared to 7.96 g CO<sub>2</sub>/kWh for the hybrid system. These findings suggest that the dry condensing system is a more environmentally sustainable option, particularly in water-scarce regions, despite a marginal reduction in energy output. The study underscores the importance of optimizing CSP plant configurations to achieve a balance between energy production and environmental sustainability.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119978"},"PeriodicalIF":9.9,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167078","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

Evaluation of the heat transfer and energy efficiency of a solar phase change heat storage system with a novel heat transfer structure 一种新型传热结构的太阳能相变蓄热系统的传热与能效评价

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-29 DOI: 10.1016/j.enconman.2025.120000

Yan Yan , Zepeng Liu , Liping Zeng , Wenjing Li , Hao Yang , Hongwei Gao

{"title":"Evaluation of the heat transfer and energy efficiency of a solar phase change heat storage system with a novel heat transfer structure","authors":"Yan Yan , Zepeng Liu , Liping Zeng , Wenjing Li , Hao Yang , Hongwei Gao","doi":"10.1016/j.enconman.2025.120000","DOIUrl":"10.1016/j.enconman.2025.120000","url":null,"abstract":"<div><div>To address the intermittent and unstable characteristics of solar energy, the combination of a solar energy system and a phase change latent heat storage unit is a promising solution. In this study, a new sandwich spiral structure is designed for a solar phase change heat storage system for residential applications. First, the influence of this structure on the internal temperature field of the latent heat storage unit is studied. Second, the effects of different radiation areas and different weather factors on the solar phase change heat storage system are compared. Finally, thermodynamic analysis of the system is carried out. The experimental findings show that the melting rate of the sandwich spiral structure is 45% of that of the double spiral structure of the same size and that the melting rate is uniform without obvious melting slow phase transition region. The solar radiation area is larger, the heat storage in the constant-temperature water tank is greater, and the temperature rise is faster. Among the influences of weather factors (solar irradiance, temperature and relative humidity) on the system, when the solar radiation intensity and temperature are stable, the relative humidity influences the solar phase change heat storage system. The overall performance of the system is evaluated. The energy efficiency of the system is 38.5%, and the exergy efficiency is 8.3%. The evaluation of the thermal performance of solar phase change heat storage systems is valuable and can provide theoretical guidance and a design basis for solar water heaters in residential applications.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 120000"},"PeriodicalIF":9.9,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167072","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

Optimizing building energy systems for grid-interactivity, comfort and resilience 优化建筑能源系统的电网互动性，舒适性和弹性

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-29 DOI: 10.1016/j.enconman.2025.119927

Wanfu Zheng , Ziqi Hu , Dan Wang , Zhe Wang

{"title":"Optimizing building energy systems for grid-interactivity, comfort and resilience","authors":"Wanfu Zheng , Ziqi Hu , Dan Wang , Zhe Wang","doi":"10.1016/j.enconman.2025.119927","DOIUrl":"10.1016/j.enconman.2025.119927","url":null,"abstract":"<div><div>With the proliferation of renewable energy sources such as solar photovoltaics, managing the complexity of building energy systems while ensuring grid stability, occupant comfort, and resilience to power outages has become increasingly challenging. To address this challenge, this study proposes a hierarchical control framework that optimally coordinates battery energy storage, heat pumps, and domestic hot water (DHW) systems across multiple residential buildings. Forecasting models for disturbances are developed using linear regression, k-nearest neighbors regression, and LightGBM. At the building level, a data-driven model predictive control (MPC) strategy optimally regulates heat pump operations to ensure occupant comfort, complemented by a rule-based controller for DHW storage scheduling. At the microgrid level, a physics-based MPC dispatches battery energy to achieve grid-level objectives such as peak shaving and emission reduction. Coordination between the two levels is achieved through a bottom-up structure: building-level controllers estimate their future electricity demand, which is passed as a disturbance input to the upper-level battery dispatch optimization. The framework performed effectively in the 2023 NeurIPS CityLearn Challenge, securing second place overall and achieving the best performance in public buildings across comfort, emissions, grid efficiency, and resilience metrics. This work provides an effective solution for community-scale energy management, emphasizing the importance of multi-level coordination between building systems and microgrids to support sustainable and resilient energy operations. Source code are available at: <span><span>https://github.com/wfzheng/2nd-place-solution-neurips-citylearn2023-control</span><svg><path></path></svg></span></div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119927"},"PeriodicalIF":9.9,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167077","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

Revealing localized compression induced degradation mechanisms in polymer electrolyte membrane water electrolyzers 揭示局部压缩诱导降解机制在聚合物电解质膜水电解槽

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-29 DOI: 10.1016/j.enconman.2025.119947

Lijun Zhu, Alexandre Tugirumubano, Aimy Bazylak

{"title":"Revealing localized compression induced degradation mechanisms in polymer electrolyte membrane water electrolyzers","authors":"Lijun Zhu, Alexandre Tugirumubano, Aimy Bazylak","doi":"10.1016/j.enconman.2025.119947","DOIUrl":"10.1016/j.enconman.2025.119947","url":null,"abstract":"<div><div>We present the first multi-physics model for the polymer electrolyte membrane water electrolyzer (PEMWE), coupling mechanical compression with electrochemical reactions to predict the effect of mechanical compression on cell performance. Under compression, the catalyst layer (CL) and membrane deform more significantly than the porous transport layer (PTL). Quite alarmingly, the membrane experiences thinning, most significantly under the lands, making the land regions of the membrane particularly susceptible to fuel crossover. Compression also results in higher mass transport resistance and lower liquid water saturation in the CL due to reduced single and two-phase permeabilities of the CL (liquid water saturation decreases by 43.6 % when increasing the compression ratio (CR) from 5 % to 30 %). Despite the drawbacks of compression, for CR < 20 % cell performance is greatly improved, and we attribute this improvement to the substantial decrease in the PTL/CL interfacial contact resistance (which outweighs the trade-off with mass transport resistances). However, there are negligible benefits to increasing the CR above this 20 % threshold, beyond which local mass transport resistances in the CL dominate electrochemical performance (mass transport resistances increase 59 % at a CR of 30 %; whereas ohmic resistances decrease by only 8 %). While the bulk electrochemical performance does not change significantly with CR > 20 %, the local current density under the land decreases, which we attribute to increases in local mass transport resistances in the CL.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119947"},"PeriodicalIF":9.9,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167076","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

Sustainable urban energy dynamics: Integrating renewable energy and electric vehicles in a European context 可持续城市能源动态：在欧洲背景下整合可再生能源和电动汽车

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-29 DOI: 10.1016/j.enconman.2025.119972

Abdullah Dik , Hao Sun , John Kaiser Calautit , Cagri Kutlu , Rabah Boukhanouf , Siddig Omer

{"title":"Sustainable urban energy dynamics: Integrating renewable energy and electric vehicles in a European context","authors":"Abdullah Dik , Hao Sun , John Kaiser Calautit , Cagri Kutlu , Rabah Boukhanouf , Siddig Omer","doi":"10.1016/j.enconman.2025.119972","DOIUrl":"10.1016/j.enconman.2025.119972","url":null,"abstract":"<div><div>The rapid adoption of electric vehicles (EVs) presents significant challenges to urban energy networks due to increased demand and potential overloading risks. Integrating renewable energy sources (RES) offers a sustainable solution, reducing carbon emissions while meeting future energy needs. Using Nottingham, UK, as a representative case within a broader European urban energy context, this study investigates the interactions between EVs, RES, and urban energy systems, focusing on supply–demand dynamics under constrained renewable output conditions. A stochastic modelling approach, guided by the Future Energy Scenarios (FES) developed by the National Energy System Operator (NESO), is employed to analyse EV-RES integration under four distinct scenarios — Consumer Transformation, System Transformation, Leading the Way, and Falling Short — projected for 2035 and 2050.</div><div>Key focus areas include balancing energy supply and demand, managing peak loads, and utilising Vehicle-to-Grid (V2G) technology to address grid stability issues. Results demonstrate the heightened challenges of integrating EVs on days with suboptimal renewable energy generation, where energy shortfalls exacerbate system strain. By 2050, low renewable energy generation days aggravate energy shortfalls, emphasising the importance of V2G. In the most constrained scenario, up to 97 % of EVs remain uncharged or partly charged, demonstrating the risk of severe energy deficits. Conversely, in an ambitious renewable energy scenario, significant renewable utilisation is achieved but is accompanied by challenges such as overgeneration and energy management complexities.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119972"},"PeriodicalIF":9.9,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167075","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

Optimisation of pin-fin heat sink design for CPV systems using machine learning-driven multi-objective approaches 利用机器学习驱动的多目标方法优化CPV系统的鳍片散热器设计

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-28 DOI: 10.1016/j.enconman.2025.119973

Javad Mohammadpour , Danah Ruth Cahanap , Danish Ansari , Christophe Duwig , Fatemeh Salehi

{"title":"Optimisation of pin-fin heat sink design for CPV systems using machine learning-driven multi-objective approaches","authors":"Javad Mohammadpour , Danah Ruth Cahanap , Danish Ansari , Christophe Duwig , Fatemeh Salehi","doi":"10.1016/j.enconman.2025.119973","DOIUrl":"10.1016/j.enconman.2025.119973","url":null,"abstract":"<div><div>Concentrated photovoltaic (CPV) systems, with their high efficiency and compact design, support green hydrogen production and contribute to United NationsSustainable Development Goal 7 (Affordable and Clean Energy). However, their performance and longevity can be significantly compromised by inadequate thermal management. To address this challenge, this study proposes a data-driven framework that enhances CPV thermal optimisation while reducing reliance on computationally intensive simulations. A novel variable pin–fin height heat sink is evaluated with the aim of minimising maximum temperature rise, temperature non-uniformity, and pressure drop. Five tree-based machine learning (ML) models, including Decision Tree, Random Forest, Gradient Boosting, XGBoost, and CatBoost, are assessed, with CatBoost demonstrating the highest predictive accuracy. This model is used as a surrogate for high-fidelity simulations, enabling efficient multi-objective optimisation using the Non-dominated Sorting Genetic Algorithm III (NSGA-III). To identify the most balanced configuration among the Pareto-optimal solutions, six multi-criteria decision-making (MCDM) models are applied. Results indicate that PROBID and PROMETHEE II, among the six MCDM models, effectively balance the competing objectives, producing a configuration that reduces temperature non-uniformity by 70.48 % and pressure drop by 41.84 % compared to a conventional uniform design. Validation against high-fidelity simulations confirms the accuracy of ML predictions, with an error margin between 0 and 0.063 %. This integrated surrogate-based approach offers a cost- and time-efficient solution for optimising CPV systems and other high-density thermal applications.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119973"},"PeriodicalIF":9.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146964","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

A novel solids-based electro-thermal energy storage system utilizing electromagnetic induction: Conceptual design and theoretical analysis 一种利用电磁感应的新型固体电热储能系统：概念设计与理论分析

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-28 DOI: 10.1016/j.enconman.2025.119974

Weiqin Lu , Xueyu Tang , Yang Zhang , Weiliang Wang , Tuo Zhou , Hai Zhang , Junfu Lyu , Xiwei Ke

{"title":"A novel solids-based electro-thermal energy storage system utilizing electromagnetic induction: Conceptual design and theoretical analysis","authors":"Weiqin Lu , Xueyu Tang , Yang Zhang , Weiliang Wang , Tuo Zhou , Hai Zhang , Junfu Lyu , Xiwei Ke","doi":"10.1016/j.enconman.2025.119974","DOIUrl":"10.1016/j.enconman.2025.119974","url":null,"abstract":"<div><div>Electro-thermal energy storage (ETES) technology has presented its great potential to efficiently consume renewable energy and increase the flexibility of power grid. This paper presents an innovative ETES system that integrates electromagnetic induction heat storage (EIHS) with moving bed heat release (MBHR). A numerical simulation method based on CFD-DEM was developed to access the system’s performance and evaluate its technical feasibility. In a studied case, the EI heater unit achieves uniform radial temperature distribution, adjustable temperature rise rate, and high particle heat storage density, while the tubular MBHE unit shows high heat transfer intensity (678.2–784.6 W/m<sup>2</sup>/K). The system’s power-to-power conversion efficiency is approximately 30.78 %, excluding minor power consumption. The developed system offers three operation modes and two business models for peak electricity supply. The preliminary economic evaluation indicates that model 1, using valley power, has a 5-year payback period and a 21.56 % internal rate of return (<span><math><mrow><mi>IRR</mi></mrow></math></span>), while model 2, using abandoned photovoltaic/wind power, shows a 10-year payback period and an 11.26 % <span><math><mrow><mi>IRR</mi></mrow></math></span>. Further sensitivity analysis suggests model 1 is more cost-effective while model 2 offers slightly better risk resistance. This work has offered some valuable insights into the advanced enhancement and development of the ETES system, as well as its future engineering applications.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119974"},"PeriodicalIF":9.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146966","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 on multi-objective optimization of thermal–hydraulic performance for enhanced heat transfer in jet impingement cooling 射流冲击冷却强化传热热工性能多目标优化研究

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-28 DOI: 10.1016/j.enconman.2025.119999

Ningbo Wang , Zuyuan Wei , Bo Tian , Zijun Dong , Shuangquan Shao

{"title":"Investigation on multi-objective optimization of thermal–hydraulic performance for enhanced heat transfer in jet impingement cooling","authors":"Ningbo Wang , Zuyuan Wei , Bo Tian , Zijun Dong , Shuangquan Shao","doi":"10.1016/j.enconman.2025.119999","DOIUrl":"10.1016/j.enconman.2025.119999","url":null,"abstract":"<div><div>Exploring efficient, clean and energy-saving cooling solutions is one of the most important ways to decarbonize data centers (DCs). This study investigates a variable spacing multi-jet direct chip cooling device to increase the heat transfer coefficient and improve the temperature uniformity. Attaching the pin fins directly to the chip significantly reduces the thermal resistance. The study of different jet schemes shows that the variable spacing multi-jet cooling solution has better heat dissipation performance. Coolant flow rate, inlet temperature, pin fin design parameters, and jet hole spacings all have different effects on thermal resistance, pressure drop, temperature standard deviation, and Nusselt number. The dataset for surrogate model construction is obtained based on computational fluid dynamics and Latin hypercube sampling experimental designs. An artificial neural network model with structural and thermal parameters as inputs and thermal resistance, pressure drop and temperature uniformity as outputs is developed. The algorithm named constrained multi-objective optimization based on even search (CMOES) is used to implement the solution of the optimization model. The optimization results show that the optimal design reduces thermal resistance to 0.048 K/W, decreases pressure drop by 20.26 kPa, and lowers temperature standard deviation by 3.22 K compared to the initial single-hole jet design. The optimal design outperforms the initial design and the performance specifications of the existing studies in terms of both thermal and hydraulic performance, and has good prospects for engineering applications. Herein, the exploration of optimization for variable spacing multi-jet direct chip cooling will help chip to operate at higher performance.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119999"},"PeriodicalIF":9.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146954","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

Realizing hybrid electrical and thermal energy storage by integrating an iron-air redox battery into the CSP-CaL system 通过将铁-空气氧化还原电池集成到CSP-CaL系统中实现混合电能和热能存储

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-28 DOI: 10.1016/j.enconman.2025.119997

Zhihui Wang , Binjian Nie , Nan He , Qicheng Chen , Yingjin Zhang , Liang Yao

{"title":"Realizing hybrid electrical and thermal energy storage by integrating an iron-air redox battery into the CSP-CaL system","authors":"Zhihui Wang , Binjian Nie , Nan He , Qicheng Chen , Yingjin Zhang , Liang Yao","doi":"10.1016/j.enconman.2025.119997","DOIUrl":"10.1016/j.enconman.2025.119997","url":null,"abstract":"<div><div>The development of renewable energy through energy storage technologies has addressed the issue of energy fluctuations. However, the insufficient absorption capacity of the grid leads to significant power curtailment. In this work, a solid oxide iron-air redox battery (SOIARB) is integrated into the concentrated solar power (CSP) with calcium looping (CaL) system to achieve hybrid electrical and thermal energy storage. Among three integration scenarios, scenario-1 (CaCO<sub>3</sub> stream heats Fe stream) exhibits the highest round-trip efficiency (RTE). As the current density escalates from 100 A/m<sup>2</sup> to 2000 A/m<sup>2</sup>, the energy efficiency of the battery decreases from 91.99 % to 53.60 %. Energy analysis shows that the CSP-CaL-SOIARB system performs best when the iron flow is 15.01 kg/s and the cross-sectional area is 74554.44 m<sup>2</sup>. RTE of the overall system and SOIARB subsystem reach 48.77 % and 61.01 %, respectively. The integration of iron-air batteries has improved the power supply capacity of the overall system by 31.37 MW, an increase of 72.55 %. Exergy analysis shows that the exergy efficiency of the overall system reaches 50.04 %, which exhibits considerable potential in hybrid electrical and thermal energy storage.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119997"},"PeriodicalIF":9.9,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144146965","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

Exploration of co-gasification mechanism of sewage sludge and bituminous coal based on reactive force field molecular dynamics simulation 基于反作用力场分子动力学模拟的污泥与烟煤共气化机理探讨

IF 9.9 1区工程技术

Energy Conversion and Management Pub Date : 2025-05-27 DOI: 10.1016/j.enconman.2025.119989

Jian Gao , Weiwei Xuan , Erzhou Zhang , Yaqiong Wang , Jiansheng Zhang , Qi Wang

{"title":"Exploration of co-gasification mechanism of sewage sludge and bituminous coal based on reactive force field molecular dynamics simulation","authors":"Jian Gao , Weiwei Xuan , Erzhou Zhang , Yaqiong Wang , Jiansheng Zhang , Qi Wang","doi":"10.1016/j.enconman.2025.119989","DOIUrl":"10.1016/j.enconman.2025.119989","url":null,"abstract":"<div><div>The co-gasification of sewage sludge and coal not only facilitates industrial decarbonization but also provides a promising approach for sludge treatment. In this study, the mechanisms of sewage sludge and bituminous coal were explored by the molecular dynamic simulation and the reactive force field. Synergy analysis revealed that the co-gasification process enhanced the production of H<sub>2</sub> and CO by 2.1 % and 1.75 % respectively. The visualization results demonstrate that glyceryl triacetate, leucine, β-D-glucose and coal molecules decompose sequentially to produce fragments during the pyrolysis stage. In the initial gasification stage, a large number of OH radicals participate in the reactions, attacking the fragments into small-molecule highly reactive groups. While H radical is more readily react with the small reactive groups to generate gaseous products. Additionally, molecular cleavage is induced by high temperature and the interaction between OH radicals and molecular fragments is accelerated. More OH and H radicals are generated by using steam, further modulating the H<sub>2</sub>/CO ratio. This study offers valuable molecular insights for optimizing the co-gasification process of sludge and coal and decarbonization goals.</div></div>","PeriodicalId":11664,"journal":{"name":"Energy Conversion and Management","volume":"340 ","pages":"Article 119989"},"PeriodicalIF":9.9,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139805","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