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Design and Optimization of a Robust Wide-Area Damping Controller for Mitigating Inter-Area Oscillations in Wind-Integrated Power Systems 风力发电系统鲁棒广域阻尼控制器的设计与优化
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-06-04 DOI: 10.1002/ese3.70161
Mehrdad Ahmadi Kamarposhti, Hassan Shokouhandeh, Sun-Kyoung Kang, Ilhami Colak, El Manaa Barhoumi
{"title":"Design and Optimization of a Robust Wide-Area Damping Controller for Mitigating Inter-Area Oscillations in Wind-Integrated Power Systems","authors":"Mehrdad Ahmadi Kamarposhti,&nbsp;Hassan Shokouhandeh,&nbsp;Sun-Kyoung Kang,&nbsp;Ilhami Colak,&nbsp;El Manaa Barhoumi","doi":"10.1002/ese3.70161","DOIUrl":"https://doi.org/10.1002/ese3.70161","url":null,"abstract":"<p>In power networks, low-frequency oscillations—particularly inter-area oscillations—pose a serious threat to system stability because of disruptions like short-circuit faults and the increasing use of renewable energy sources like wind farms. To lessen the negative impacts of time delays when sending distant signals, this study presents a novel approach for the creation and optimization of a wide-area damping controller (WADC). To accomplish smooth integration with the power system stabilizer (PSS), the Salp Swarm Algorithm (SSA) is used to precisely alter the WADC's parameters. The study also looks into how time delays, changes in wind speed, and load variations affect the effectiveness of the controller. A typical six-machine test system with 200 MW of wind power is used for simulations under various operating conditions and disruptions. The results show that the suggested controller counteracts the detrimental effects of time delays, considerably lowers inter-area oscillations, and preserves overall system stability. This study emphasizes the significance of wide-area signal usage and robust control frameworks while providing a workable method for enhancing the dynamic performance of power systems with significant penetration of renewable energy.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4143-4158"},"PeriodicalIF":3.4,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70161","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flexoelectric Effects of Nanoscale Electrical Materials Under Dynamic Conditions 动态条件下纳米级电材料的柔性电效应
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-06-04 DOI: 10.1002/ese3.70175
Enaam Abdul khaliq Ali, Nadhim M. Faleh
{"title":"Flexoelectric Effects of Nanoscale Electrical Materials Under Dynamic Conditions","authors":"Enaam Abdul khaliq Ali,&nbsp;Nadhim M. Faleh","doi":"10.1002/ese3.70175","DOIUrl":"https://doi.org/10.1002/ese3.70175","url":null,"abstract":"<p>Material flexoelectricity is due to strain gradients at the material's small dimensions, and nanoelectronics more precisely enhances the heightened sensitivity at this reduced scale. Below, the study presents a sensitivity analysis in active applications, such as sensors and actuators, to these effects, focusing on how flexoelectricity enhances the responsiveness of vibrational frequencies and electromechanical coupling at the nanoscale. The dynamic properties of the flexoelectric nanobeam are modeled using nonlocal elasticity theory and solved numerically using the differential quadrature method (DQM), offering an efficient approach to analyse the governing equations. To date, it integrates the nonlocal elasticity theory, accounting for any scale-dependent behavior. The major equations governing the equilibrium of the beam are derived from Hamilton's principle, thereby offering firm groundwork for beam modeling. The results demonstrate that flexoelectric effects significantly influence the response and vibration frequencies of small-scale electronics; therefore, these effects should be considered in the design and optimization of nanoelectronics devices. Results provide insight into the device's improved performance and reliable functioning in real-world applications.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 9","pages":"4348-4355"},"PeriodicalIF":3.4,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70175","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Gas-Bearing Properties of Shale Reservoirs: A Comprehensive Analysis Based on Field Interpretation and Logging Interpretation 页岩储层含气性分析——基于现场解释和测井解释的综合分析
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-06-03 DOI: 10.1002/ese3.70170
Jin Pang, Tongtong Wu, Xinan Yu, Chunxi Zhou, Pei Yu, Haotian Chen, Jiaao Gao
{"title":"Analysis of Gas-Bearing Properties of Shale Reservoirs: A Comprehensive Analysis Based on Field Interpretation and Logging Interpretation","authors":"Jin Pang,&nbsp;Tongtong Wu,&nbsp;Xinan Yu,&nbsp;Chunxi Zhou,&nbsp;Pei Yu,&nbsp;Haotian Chen,&nbsp;Jiaao Gao","doi":"10.1002/ese3.70170","DOIUrl":"https://doi.org/10.1002/ese3.70170","url":null,"abstract":"<p>Shale gas, as an important component of unconventional natural gas, plays a crucial role in resource development. This paper proposes a comprehensive analytical method that combines field analysis and well logging interpretation to evaluate gas content in shale reservoirs. Core analysis experiments are conducted to obtain microscopic gas content data, and well logging parameters are calibrated and extended to reveal vertical and lateral distribution characteristics of the reservoir. In the analysis of typical wells in the study area, it is found that gas content in shale gas reservoirs is significantly influenced by total organic carbon (TOC) content, mineral composition, and pore characteristics. Micro-pores and meso-pores mainly store adsorbed gas, while macro-pores and micro-fractures are the primary storage space for free gas. The content of clay minerals significantly suppresses the total gas content and free gas volume, while quartz and TOC content enhance the gas storage capacity of the reservoir. The comprehensive analytical method proposed in this paper overcomes the limitations of single methods and establishes a framework for evaluating gas content in shale gas reservoirs from microscopic to macroscopic scales, providing a scientific basis for resource potential assessment and development planning.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4241-4251"},"PeriodicalIF":3.4,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A New Modeling Method for Meteorological Information of Regional Distributed Photovoltaic Power Generation Based on Multi-Source Information Fusion 基于多源信息融合的区域分布式光伏发电气象信息建模新方法
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-06-03 DOI: 10.1002/ese3.70167
Yuhang Wang, Dengxuan Li, Wenwen Ma, Xi Zhang, Honglu Zhu
{"title":"A New Modeling Method for Meteorological Information of Regional Distributed Photovoltaic Power Generation Based on Multi-Source Information Fusion","authors":"Yuhang Wang,&nbsp;Dengxuan Li,&nbsp;Wenwen Ma,&nbsp;Xi Zhang,&nbsp;Honglu Zhu","doi":"10.1002/ese3.70167","DOIUrl":"https://doi.org/10.1002/ese3.70167","url":null,"abstract":"<p>With the increasingly significance of distributed photovoltaic (DPV) generation in modern energy structures, requirements for intelligent operation and accurate power forecasting have grown significantly. Precise meteorological information is the foundation for achieving these functions. However, DPV sites are typically scattered with small installed capacities and generally lack dedicated weather stations. Consequently, developing effective, reliable, and cost-efficient meteorological information computation methods for DPV has become a critical research focus. The Current challenges in DPV meteorological information fusion computation include feature engineering, the reasonable selection of input variables and preliminary establishment of mapping relationships. Additionally, incomplete DPV power data further complicate the situation. To address these challenges, this paper proposes a meteorological information computation method based on multi-source information fusion. Firstly, the paper analyzes the mapping relationships among numerical weather predictions (NWP), DPV site power, and station meteorological information. This analysis demonstrates the possibility of information fusion. Then, a geographic information-based DPV power computation method is proposed to address the low quality of DPV data. Finally, a PV site meteorological information fusion method is developed using Long Short-Term Memory (LSTM) networks, integrating NWP and site power data. Verification using actual data confirms the effectiveness of the proposed methods. The RMSE and MAE for DPV site power calculation are as low as 0.13 and 0.60, respectively. The Pearson correlation coefficient for meteorological information fusion reaches a maximum of 0.99. These metrics outperform those of convolutional neural network (CNN), back propagation (BP), support vector machines (SVM), and theoretical calculation models, demonstrating excellent seasonal adaptability and calculation accuracy.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4211-4229"},"PeriodicalIF":3.4,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70167","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Grouted Steel Pipe Supports Roof Cutting and Gob-Side Entry Retaining Support Technology for Fully-Mechanized Caving Face 综放工作面注浆钢管支护切顶留巷支护技术研究
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-06-03 DOI: 10.1002/ese3.70149
Xiaojun Li, Bangbang Mu, Huaizhen Li, Ruifu Yuan
{"title":"Research on Grouted Steel Pipe Supports Roof Cutting and Gob-Side Entry Retaining Support Technology for Fully-Mechanized Caving Face","authors":"Xiaojun Li,&nbsp;Bangbang Mu,&nbsp;Huaizhen Li,&nbsp;Ruifu Yuan","doi":"10.1002/ese3.70149","DOIUrl":"https://doi.org/10.1002/ese3.70149","url":null,"abstract":"<p>Aiming at the roof control challenges of gob-side entry retaining in fully mechanized top-coal caving faces, traditional concrete-filled steel tube (CFST) support technology exhibits limitations such as slow strength development and complex construction equipment. This study, based on the 1311 fully mechanized caving face in Shanxi Runhong Coal Mine, proposes a gob-side entry retaining technology integrating roof cutting for pressure relief with support by grouted steel tubes. Through physical experiments, numerical simulations, and field tests, the mechanical properties of sulphoaluminate cement-based backfill and grouted steel tube structures were analyzed. The results indicate that the sulphoaluminate cement-based slurry with a water-cement ratio of 0.4 exhibits remarkable early-strength characteristics, achieving compressive strengths of 30.85 and 31.26 MPa at 1 and 28 days, respectively. The support system attains the 28-day bearing capacity of traditional CFST within 24 h, effectively resolving the timeliness inadequacy of gob-side support. Increasing the steel tube wall thickness enhances the bearing capacity more significantly than material strength improvement, with notable stress concentration and bending deformation observed at the middle region during loading. These findings provide a theoretical basis for support parameter optimization. Field applications demonstrate that this technology ensures surrounding rock stability while offering advantages such as simplified construction and reduced labor costs. This study provides theoretical support for the development of gob-side entry retaining technology and offers practical guidance for its application in fully mechanized caving faces.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"3824-3839"},"PeriodicalIF":3.4,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70149","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811137","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distinguishing Rock Fracture and Pore's T2 Signals From NMR Experiments With Assisted X-Ray CT Imaging 利用辅助x射线CT成像技术从核磁共振实验中识别岩石裂缝和孔隙T2信号
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-06-02 DOI: 10.1002/ese3.70163
Ying Yang, Limin Li, Tingjun Wen, Luyi W. Shen, Elton J. Chen, Xu Dong, Jiangen Xu
{"title":"Distinguishing Rock Fracture and Pore's T2 Signals From NMR Experiments With Assisted X-Ray CT Imaging","authors":"Ying Yang,&nbsp;Limin Li,&nbsp;Tingjun Wen,&nbsp;Luyi W. Shen,&nbsp;Elton J. Chen,&nbsp;Xu Dong,&nbsp;Jiangen Xu","doi":"10.1002/ese3.70163","DOIUrl":"https://doi.org/10.1002/ese3.70163","url":null,"abstract":"<p>Nuclear magnetic resonance (NMR) is widely used to characterize fluids in rock pore spaces, but traditional methods have difficulty distinguishing fractures from matrix pores in complex carbonate formations. To address this, we developed a calibration method that integrates X-ray computed tomography (CT) imaging with NMR to identify fracture-related <i>T</i><sub><i>2</i></sub> signals. The method quantitatively calibrates NMR <i>T</i><sub><i>2</i></sub> spectra to fracture aperture sizes, improving the accuracy of fracture characterization. Fully saturated fractured samples were used, and fracture fluids were progressively removed using gas displacement techniques. NMR spectra were recorded before and after fluid removal to isolate fracture-specific signals. Fracture size distributions were estimated from CT images by pixel counting, and porosity was determined by fluid saturation measurements, with corrections for matrix porosity not captured by CT resolution. This workflow extracts fracture distributions from <i>T</i><sub><i>2</i></sub> spectra and establishes a correlation between pore radius (<i>r</i>) and <i>T</i><sub><i>2</i></sub>, enabling subsequent applications in core analysis and NMR logging. The method improves differentiation between fractures and matrix pores, enhances the interpretation of NMR data, and can be adapted to heterogeneous reservoir systems.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4178-4189"},"PeriodicalIF":3.4,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on Energy Evolution Law of Rocks With Different Lithologies and Sizes 不同岩性、不同粒径岩石能量演化规律研究
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-06-02 DOI: 10.1002/ese3.70166
Yanchun Yin, Zitong Gao, Zhigang Zhao, Shudong He, Liyuan Liu, Guoying Li
{"title":"Study on Energy Evolution Law of Rocks With Different Lithologies and Sizes","authors":"Yanchun Yin,&nbsp;Zitong Gao,&nbsp;Zhigang Zhao,&nbsp;Shudong He,&nbsp;Liyuan Liu,&nbsp;Guoying Li","doi":"10.1002/ese3.70166","DOIUrl":"https://doi.org/10.1002/ese3.70166","url":null,"abstract":"<p>Investigating the actual patterns of energy accumulation and release in roof rock, particularly with varying stiffnesses in mining environments, is crucial. By conducting cyclic loading and unloading tests on rock samples of different lithologies, different sizes, and consistent stiffness, how lithology, size, and stiffness affect the evolution and distribution of rock energy were explored. Furthermore, the practical applications of stiffness theory in engineering contexts were discussed. This paper finds that, for samples of the same size but different lithologies, in loading, the rate of elastic energy growth accelerates with load and decreases with stiffness, whereas the peak proportion of elastic energy rises with stiffness. In unloading, lower stiffness leads to higher, prolonged elastic energy release. For samples of the same lithology but varying sizes, energy growth increases as stiffness decreases, with minimal peak proportion of elastic energy variation. In unloading, lower stiffness leads to higher, prolonged elastic energy release. Among samples with identical stiffness but different lithologies and sizes, little difference is seen in loading energy growth or unloading release rates, but elastic energy proportion varies mainly due to lithology. Higher Young's modulus and larger sizes result in greater elastic energy storage. Lab tests show that low-stiffness machines will cause dynamic damage to the coal specimen, whereas hard rocks are more prone to coal bursts due to higher energy storage and release compared to soft rocks. The main reason for the deviation between the two is that the energy storage capacity of hard rock is greater than that of soft rock, and the storage-release elastic energy of hard rock is greater than that of soft rock.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4199-4210"},"PeriodicalIF":3.4,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70166","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Parametric Study on the Performance of Gas Springs in FPSE With Pneumatic Supporting System 气动支撑FPSE中气弹簧性能的参数化研究
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-05-28 DOI: 10.1002/ese3.70155
Lingxuan Kong, Jing Li, Zhibo Wu, Shuze Sun
{"title":"Parametric Study on the Performance of Gas Springs in FPSE With Pneumatic Supporting System","authors":"Lingxuan Kong,&nbsp;Jing Li,&nbsp;Zhibo Wu,&nbsp;Shuze Sun","doi":"10.1002/ese3.70155","DOIUrl":"https://doi.org/10.1002/ese3.70155","url":null,"abstract":"<p>The introduction of a pneumatic supporting system composed of gas springs and hydrostatic bearings in the free-piston Stirling generator (FPSG) can effectively increase the power density of the nuclear space power plant. In this paper, a 1 kW FPSG with pneumatic supporting system was developed, and the working characteristics of dual gas springs were obtained under an external driving condition. A quasi-one-dimensional numerical model is established, the relative error between piston strokes is within 5%, and the maximum phase uncertainty is 5.36° between experimental and numerical results. The generator outputs 1011.3 W with a total thermo-electric efficiency of 14.85% under the rated condition, and the hysteresis loss of gas springs is 535.6 W, which accounts for 7.85% of the total power input, and the global stiffness reaches 96.43 N/mm. A multitude of influencing factors (including operational, constitutive, and sealing parameters) on the performance of gas springs are evaluated. An expression for the correction coefficient of stiffness with respect to five influencing parameters is established through data regression, as well as an empirical formula for the hysteresis loss as a percentage of the total input power. The correlations indicate that the order of weights affecting the performance of gas springs is as follows: compression ratio, configuration factor, gap thickness, gap length, and wall temperature.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4059-4086"},"PeriodicalIF":3.4,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70155","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Environmental and Emission Analysis of Biodiesel/Bioethanol/Nanoparticles Blends With Hydrogen Addition in Diesel Engine 柴油发动机加氢生物柴油/生物乙醇/纳米颗粒混合物的环境与排放分析
IF 3.4 3区 工程技术
Energy Science & Engineering Pub Date : 2025-05-27 DOI: 10.1002/ese3.70151
Ravikumar Jayabal, Rajkumar Sivanraju
{"title":"Environmental and Emission Analysis of Biodiesel/Bioethanol/Nanoparticles Blends With Hydrogen Addition in Diesel Engine","authors":"Ravikumar Jayabal,&nbsp;Rajkumar Sivanraju","doi":"10.1002/ese3.70151","DOIUrl":"https://doi.org/10.1002/ese3.70151","url":null,"abstract":"<p>This study investigates the emission characteristics of a diesel engine fueled by a combination of algae biodiesel (AB), bioethanol (BE), graphene oxide (GO) nanoparticles, and hydrogen (H<sub>2</sub>) fumigation, assessing their potential as sustainable fuel alternatives. A single-cylinder diesel engine was tested under different load conditions using a biodiesel blend (AB + GO 50 ppm + BE 10%) as the primary fuel. At the same time, H<sub>2</sub> was introduced into the intake manifold via a port fuel injector at flow rates of 3 and 6 L/min (LPM). Emissions, including hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NO<sub><i>x</i></sub>), and smoke opacity, were analyzed. Emission data from three independent runs at each load were analyzed with one-way ANOVA followed by Tukey's HSD test (<i>p</i> &lt; 0.05) to verify statistical significance. The findings showed that H<sub>2</sub> fumigation at 3 and 6 LPM reduced HC emissions by 33.33% and 46.66%, CO by 57.75% and 77.58%, and smoke opacity by 15.04% and 31%, respectively, when compared with conventional diesel. While NO<i><sub>x</sub></i> emissions for the biodiesel blend without H<sub>2</sub> were 11.69% lower than diesel, H<sub>2</sub> fumigation increased NO<sub><i>x</i></sub> by 20.71% and 39% at 3 and 6 LPM, respectively. Combining AB, BE, GO, and H<sub>2</sub> effectively reduces HC, CO, and smoke emissions while improving combustion efficiency. However, higher NO<i><sub>x</sub></i> emissions with H<sub>2</sub> fumigation highlight the need for further optimization.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 8","pages":"4024-4031"},"PeriodicalIF":3.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://scijournals.onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70151","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144810987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advanced Ignition and Combustion Analysis of Second-Generation Biodiesels in Turbocharged Diesel Engines 第二代生物柴油在涡轮增压柴油机上的先进点火与燃烧分析
IF 3.5 3区 工程技术
Energy Science & Engineering Pub Date : 2025-05-27 DOI: 10.1002/ese3.70012
Balamurugan Mani, Ratchagaraja Dhairiyasamy, Deepika Gabiriel, C. Ahamed Saleel, Nasim Hasan, Fayaz Hussain
{"title":"Advanced Ignition and Combustion Analysis of Second-Generation Biodiesels in Turbocharged Diesel Engines","authors":"Balamurugan Mani,&nbsp;Ratchagaraja Dhairiyasamy,&nbsp;Deepika Gabiriel,&nbsp;C. Ahamed Saleel,&nbsp;Nasim Hasan,&nbsp;Fayaz Hussain","doi":"10.1002/ese3.70012","DOIUrl":"https://doi.org/10.1002/ese3.70012","url":null,"abstract":"<p>This study investigates the energy release characteristics of second-generation biodiesel blends derived from beef tallow and castor bean in a turbocharged compression ignition engine. The primary objective was to evaluate ignition delay, combustion phasing, and energy release rates at various engine loads using blends of B10 and B20 biodiesel concentrations. A comprehensive experimental setup, including a diesel engine and a detailed thermodynamic model, was employed for this analysis. Dynamometric testing was conducted to assess the performance of the biodiesel blends compared to mineral diesel and soybean biodiesel. Key parameters such as cetane number, viscosity, and fatty acid composition of the biodiesels were correlated with their combustion behavior. Energy release characteristics were measured under low (250 kPa), medium (500 kPa), and high (750 kPa) load conditions. The study revealed that beef tallow biodiesel advanced ignition timing, reducing premixed combustion phases across all loads. At low load, castor bean biodiesel showed significant ignition delays (around 3° crank angle longer than diesel), leading to higher peak energy release rates, notably at high loads where it surpassed mineral diesel. The B20 blend of castor bean biodiesel emitted 320 mg/kg of unburned hydrocarbons at low load, compared to 21 mg/kg for diesel, indicating challenges in achieving complete combustion. Beef tallow biodiesel exhibited favorable ignition characteristics, while castor bean biodiesel faced issues with delayed ignition and higher energy release rates due to its high viscosity and low cetane number. Optimizing the molecular composition of castor bean biodiesel and exploring advanced fuel injection strategies could enhance its combustion efficiency. Further research is recommended to investigate the long-term effects on engine wear and emissions, ensuring these biodiesels' viability as sustainable alternatives to conventional fuels.</p>","PeriodicalId":11673,"journal":{"name":"Energy Science & Engineering","volume":"13 6","pages":"2620-2630"},"PeriodicalIF":3.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ese3.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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