IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-06 DOI: 10.1016/j.energy.2026.140367

Se Hyeon Ham , Dong Soo Jang , Soonbum Kwon , Jun Yeob Chung , Yongchan Kim

{"title":"Comparative energy performance evaluation of high-density data centers using air- and immersion-cooling systems with various economizers","authors":"Se Hyeon Ham , Dong Soo Jang , Soonbum Kwon , Jun Yeob Chung , Yongchan Kim","doi":"10.1016/j.energy.2026.140367","DOIUrl":"10.1016/j.energy.2026.140367","url":null,"abstract":"<div><div>With increasing demand for high-density data centers, immersion-cooling systems and economizers have emerged as energy-efficient alternatives to conventional air-cooling systems. A comprehensive analysis of the combined adoption of immersion-cooling and economizer systems is essential for reducing energy consumption in data centers. This study analyzed the annual energy performance of a data center using immersion-cooling systems with economizers in various climatic regions. Specifically, the energy performance of the immersion-cooling system with economizers was compared with that of a conventional air-cooling system. Using economizers in the air-cooling system decreased annual power consumption by up to 40%, with the lowest monthly power usage effectiveness (PUE) values of 1.257, 1.195, and 1.146 with a non-economizer (NE), water-side economizer (WSE), and air-side economizer (ASE), respectively. The annual PUEs of the immersion-cooling systems with an NE and a WSE were 0.052 and 0.078, respectively, lower than that of the air-cooling system with an NE. Moreover, the influence of climatic conditions on the energy performance of air- and immersion-cooling systems with economizers was analyzed. The immersion-cooling system with a WSE exhibited a lower PUE than that with an ASE under most climatic conditions. In addition, a comparative life-cycle cost (LCC) analysis showed that the immersion-cooling system was economically superior to the air-cooling system specifically in climate zones at MATs above 14.4 °C.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140367"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187471","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 multiscale analysis of spillover effects and price forecasting in China's carbon market 中国碳市场溢出效应的多尺度分析与价格预测

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-03 DOI: 10.1016/j.energy.2026.140304

Shuangyue Qian, Zhuoming He, Ruxing Wan, Ling Tang

{"title":"A multiscale analysis of spillover effects and price forecasting in China's carbon market","authors":"Shuangyue Qian, Zhuoming He, Ruxing Wan, Ling Tang","doi":"10.1016/j.energy.2026.140304","DOIUrl":"10.1016/j.energy.2026.140304","url":null,"abstract":"<div><div>As China transitions from regional carbon trading pilots to a unified national Emission Trading Scheme (ETS), understanding spillover effects between China's national and pilot ETSs and accurately predicting national carbon price becomes vital. However, existing studies often overlook multi-scale spillover effects, and rarely embed causal information into prediction models. To address these gaps, this study proposes a causality-guided multi-scale forecasting framework that integrates pilot markets' data, applies Multivariate Empirical Mode Decomposition (MEMD), and incorporates machine learning models to analyze spillover dynamics and predict national carbon price. The results show that: (1) at the raw data level, no Granger causality relationship is observed between national and pilot ETSs; (2) markets appear uncorrelated at short time scales (2–4 days), exhibit strong bidirectional spillover effects at intermediate scales (approximately one week to one year) likely driven by major events and policy changes, and demonstrate a clear linear trend relationship at long-term scales; (3) incorporating pilot market information significantly improves prediction accuracy, reducing Mean Absolute Percentage Error (MAPE) by approximately 0.10%–37.98%. Overall, pilot ETSs offer valuable signals, and the causality-guided multi-scale forecasting framework helps manage the complexity of carbon price prediction. The findings offer insights into the development and improvement of China's national ETS and enhance the effectiveness of carbon price forecasting.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140304"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187245","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

Research on hierarchical eco-driving strategy for fuel cell hybrid electric vehicles based on traffic flow 基于交通流的燃料电池混合动力汽车分层生态驾驶策略研究

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-13 DOI: 10.1016/j.energy.2026.140418

Wei Tan , Guo-Dong Ma , Su-Lei Wang , Shuai Gao , Ke Ma

{"title":"Research on hierarchical eco-driving strategy for fuel cell hybrid electric vehicles based on traffic flow","authors":"Wei Tan , Guo-Dong Ma , Su-Lei Wang , Shuai Gao , Ke Ma","doi":"10.1016/j.energy.2026.140418","DOIUrl":"10.1016/j.energy.2026.140418","url":null,"abstract":"<div><div>With the rapid advancement of intelligent transportation technologies, fuel cell hybrid electric vehicles(FCHEVs) have emerged as a pivotal technology for advancing sustainable transportation systems, owing to their exceptional energy conversion efficiency and zero-emission properties. However, optimizing energy management for FCHEVs in complex urban traffic environments remains a critical unresolved challenge. To address the above-mentioned problem, this study proposes a hierarchical eco-driving strategy leveraging traffic flow information to holistically optimize traffic efficiency and energy consumption. At the upper layer, a spatiotemporal dynamic programming (DP) framework is developed to optimize fleet-level speed trajectories by incorporating traffic signal phase and timing (SPaT) data along with dynamic inter-vehicle interactions, thereby enhancing driving safety while significantly improving energy efficiency. Considering real-time computational efficiency, the lower layer introduces an Alternating Direction Method of Multipliers (ADMM) algorithm to provide a computational foundation. On this basis, a cyclic iterative strategy is further employed to regulate the fuel cell system's power variation rate, thereby extending its lifespan and enhancing overall system efficiency. The efficacy of this strategy was validated through comparative analysis with a modified Gipps model. Simulation results demonstrate that the dynamic programming-based speed planning strategy exhibits significant advantages in reducing fuel consumption and improving driving comfort. Simultaneously, the ADMM algorithm significantly reduces computational complexity, achieving a computational efficiency one order of magnitude higher than the DP method, while still maintaining comparable fuel economy performance.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140418"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187288","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

Acceleration mechanism of the thermal runaway propagation in an enclosed LIB cluster and the fire disadvantage of liquid immersion 封闭LIB簇热失控传播的加速机理及液体浸没的火灾缺陷

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-07 DOI: 10.1016/j.energy.2026.140289

Binbin Mao , Cheng Chi , Jiahao Lu , Ying Zhang

{"title":"Acceleration mechanism of the thermal runaway propagation in an enclosed LIB cluster and the fire disadvantage of liquid immersion","authors":"Binbin Mao , Cheng Chi , Jiahao Lu , Ying Zhang","doi":"10.1016/j.energy.2026.140289","DOIUrl":"10.1016/j.energy.2026.140289","url":null,"abstract":"<div><div>Thermal runaway propagation (TRP) in lithium-ion battery (LIB) modules presents a major safety concern, particularly in confined environment where heat and ejecta cannot dissipate effectively. This study systematically investigates the heat transfer mechanisms driving TRP under different conditions: open <em>vs.</em> confined spaces, inert <em>vs.</em> oxidative atmospheres, and full-immersion cooling scenarios. TRP in open space often terminates due to rapid heat dissipation, while confinement accelerates propagation significantly through sustained thermal feedback from scorching gases. The propagation rate of the rear rows is up to 9–11 times faster than that of front rows. Decoupling analysis revealed that heat transferred from the surrounding gases contributes more than 90% of the total heat received by a cell before TR, far outweighing radiative effects. Solid ejecta enhanced localized heating but played a secondary role compared to hot gases. Full-immersion with #5 Industrial White Oil has critical dual effects: the oil delays the TR of the triggered cell by about 1600 s, but once ignited it can lead to a much more catastrophic fire with peak HRR increasing from 16.76 kW to 366.62 kW. This study underscores the crucial role of gas-phase heat transfer, and the heat transfer pathways are quantified, which provide valuable advice to mitigate the TRP of an enclosed LIB cluster.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140289"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187343","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

Hierarchical model predictive control of greenhouse energy systems considering energy-water-carbon-food nexus 考虑能源-水-碳-食物关系的温室能源系统层次模型预测控制

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-11 DOI: 10.1016/j.energy.2026.140421

Dong Lin , Minjie Hu , Zhiling Ren , Yun Dong , Xianming Ye , Yuling Fan , Lijun Zhang

{"title":"Hierarchical model predictive control of greenhouse energy systems considering energy-water-carbon-food nexus","authors":"Dong Lin , Minjie Hu , Zhiling Ren , Yun Dong , Xianming Ye , Yuling Fan , Lijun Zhang","doi":"10.1016/j.energy.2026.140421","DOIUrl":"10.1016/j.energy.2026.140421","url":null,"abstract":"<div><div>Greenhouse cultivation plays a vital role in ensuring food security but is often associated with high energy consumption, water usage, and carbon emissions. Integrating renewable energy systems for power supply and utilizing rainwater harvesting for irrigation can help address these challenges. However, balancing these interconnected factors requires advanced control strategies. In this study, we propose a hierarchical model predictive control (MPC) framework to optimize the management of grid-connected photovoltaic-battery systems in greenhouses, accounting for the interactions among energy use, water consumption, carbon emissions, and food production (EWCF nexus). The hierarchical MPC is structured in three layers: the first optimizes greenhouse operations to minimize total costs (MTC); the second manages the scheduling of the hybrid energy system to minimize operational cost (MOC); and the third designs an MPC controller to handle photovoltaic generation and load demand disturbances. Results show that the proposed MTC strategy reduces the total cost by 81.01% compared with the minimizing energy consumption strategy. Moreover, the MOC strategy reduces operational costs by 20.68% compared to the maximizing self-consumption strategy. In addition, the proposed MPC achieves superior performance in tracking the reference trajectory under varying disturbance levels compared to commonly used open loop controllers. This study provides practical guidance for greenhouse management by addressing key resource and environmental challenges, contributing to the sustainable development of controlled-environment agriculture.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140421"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187465","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

Oxy-blown bubbling fluidized bed gasification of high-ash Indian coal: A pilot – Scale demonstration 高灰分印度煤的鼓泡流化床气化：中试示范

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-12 DOI: 10.1016/j.energy.2026.140437

Rupesh Kumar Singh , Nilesh D. Dhaigude , Arti Sahu , Gajanan Sahu , Vishal Chauhan , Sujan Saha , Shiva Kumar Saw , Prakash D. Chavan

{"title":"Oxy-blown bubbling fluidized bed gasification of high-ash Indian coal: A pilot – Scale demonstration","authors":"Rupesh Kumar Singh , Nilesh D. Dhaigude , Arti Sahu , Gajanan Sahu , Vishal Chauhan , Sujan Saha , Shiva Kumar Saw , Prakash D. Chavan","doi":"10.1016/j.energy.2026.140437","DOIUrl":"10.1016/j.energy.2026.140437","url":null,"abstract":"<div><div>India's vast coal reserves offer a strategic pathway for clean energy via gasification; however, the high-ash content of indigenous coal renders most global gasifier designs techno-economically unviable. To address this gap, the CSIR-Central Institute of Mining and Fuel Research (CSIR-CIMFR) developed an indigenous Oxy-blown Bubbling Fluidized Bed Gasification (BFBG) pilot plant (TRL-6). The present findings evaluate the gasification performance of high-ash Indian coal at a thermal capacity of 107–150 kW<sub>th</sub>, utilizing a steam-oxygen mixture at atmospheric pressure and temperatures between ∼936 and 987 °C. The research systematically investigates the effects of the equivalence ratio (ER) and steam-to-coal (S/C) ratio on key gasification performance indicators, including Syngas composition and yield, H<sub>2</sub>/CO ratio, Carbon Conversion Efficiency (CCE), Cold Gas Efficiency (CGE), and Lower Heating Value (LHV) of the syngas. Under optimized conditions (ER: 0.40; S/C: 0.82), the process achieved a syngas composition of H<sub>2</sub>:CO:CH<sub>4</sub>:CO<sub>2</sub> in the ratio of 38.45%:23.99%:7.34%:30.22%, yielding an H<sub>2</sub>/CO ratio of 1.60. Performance indicators achieved a CCE of 97.23%, CGE of 87.57%, and LHV of 9.03 MJ/Nm<sup>3</sup> syngas. These results demonstrate the feasibility of producing hydrogen-rich syngas suitable for methanol synthesis, Direct Reduced Iron (DRI) production, and chemical feedstock. The findings provide the foundational data necessary for scaling up to pithead demonstration facilities in India.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140437"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187474","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

Energy saving potential of the Indian chemical Industry: Role of innovation and export 印度化学工业的节能潜力：创新和出口的作用

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-09 DOI: 10.1016/j.energy.2026.140357

Showkat Ahmad Shah , Salman Haider , Rafiq Hussain Ganaie

{"title":"Energy saving potential of the Indian chemical Industry: Role of innovation and export","authors":"Showkat Ahmad Shah , Salman Haider , Rafiq Hussain Ganaie","doi":"10.1016/j.energy.2026.140357","DOIUrl":"10.1016/j.energy.2026.140357","url":null,"abstract":"<div><div>This analysis aims to estimate the savings potential through energy efficiency and explore the effects of innovation and exporting. We consider data from 85 firms in the Indian chemical industry for the period from 2003 to 04 to 2019-20. Widely used stochastic frontier analysis has been used to estimate production function-based Energy Efficiency (EE). Overall, the EE estimate has a median of 78 per cent, showcasing significant potential for energy savings in the industry. Firm-level <em>total factor energy efficiency</em> (<em>TFEE</em>) ranges from 55 to 82 per cent, with considerable variation. Our analysis reveals that firms with greater accumulated innovative capabilities tend to achieve higher energy efficiency. Additionally, factors such as firm age, financial performance and exporting are positively associated with better TFEE. Whereas firms with geographically dispersed production facilities and higher energy prices lead to lower energy efficiency. The results underscore the vital role of exporting, regional disparities, and technological gaps when designing EE strategies at the firm level. Our study offers valuable insights for policymakers.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140357"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187519","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

Potassium fixation and ash fusion behavior in biomass and sewage sludge co-gasification 生物质与污水污泥共气化过程中的固钾和灰融合行为

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-06 DOI: 10.1016/j.energy.2026.140317

Kejie Huang , Jiawei Wu , Xin Yang , Jinfan Li , Xin Han , Xinping Pei , Shunxuan Hu , Fenghao Jiang , Ke Liu , Junguo Li

{"title":"Potassium fixation and ash fusion behavior in biomass and sewage sludge co-gasification","authors":"Kejie Huang , Jiawei Wu , Xin Yang , Jinfan Li , Xin Han , Xinping Pei , Shunxuan Hu , Fenghao Jiang , Ke Liu , Junguo Li","doi":"10.1016/j.energy.2026.140317","DOIUrl":"10.1016/j.energy.2026.140317","url":null,"abstract":"<div><div>Biomass gasification is an efficient method for utilizing biomass energy. However, the widespread adoption of this technology is limited by ash-related issues caused by potassium, which can disrupt the stable operation of gasification systems. This study explored the co-gasification of sewage sludge (SS) and corn cob (CC) to address this challenge. The high SiO<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> content in SS reacted with potassium to form the high-melting-point mineral leucite (KAlSi<sub>2</sub>O<sub>6</sub>), thereby facilitating potassium fixation in the gasification residues. At 1000 °C, the potassium retention in the gasification residues without SS addition was only 65.68%. However, when 15% and 20% SS were added, potassium retention increased significantly to 94.71% and 92.13%, respectively. The deformation temperature (DT) and softening temperature (ST) of the CC ash were 984 °C and 1041 °C, respectively. After adding 5% SS, both DT and ST increased to 1317 °C and 1349 °C, demonstrating a significant improvement in the ash fusion characteristics. Furthermore, FT-IR, XPS, and SEM-EDS analyses revealed that the melting of KCl and potassium silicate was the main cause of ash fusion and slagging. Additionally, the phosphorus in SS was found to exist in the molten phase as (PO<sub>4</sub>)<sup>3-</sup>. These findings confirm that SS can effectively reduce potassium volatilization and mitigate ash-related issues during biomass gasification. This study also offers new insights into the causes of biomass ash fusion and the fate of phosphorus, providing potential strategies for the recycling of gasification residues.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140317"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187635","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

Thermodynamic and economic analysis of a SRCO2–MEOFC–HTSC multi-cycle coupled system for power and steam cogeneration utilizing medium- and high-temperature waste heat 利用中高温余热的SRCO2-MEOFC-HTSC多循环耦合电汽热电联产系统的热力学和经济分析

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-06 DOI: 10.1016/j.energy.2026.140311

Zengli Wang, Yu Zhu, Tao Nie, Hua Shao

{"title":"Thermodynamic and economic analysis of a SRCO2–MEOFC–HTSC multi-cycle coupled system for power and steam cogeneration utilizing medium- and high-temperature waste heat","authors":"Zengli Wang, Yu Zhu, Tao Nie, Hua Shao","doi":"10.1016/j.energy.2026.140311","DOIUrl":"10.1016/j.energy.2026.140311","url":null,"abstract":"<div><div>To enhance the utilization efficiency of medium- and high-temperature flue-gas waste heat, a novel power-steam cogeneration system integrating a supercritical CO<sub>2</sub> recuperative cycle (SRCO<sub>2</sub>), a modified organic flash cycle with a two-phase expander (MEOFC), and a high-temperature steam heat pump cycle (HTSC) is proposed. A thermodynamic model was established and optimized using a particle swarm optimization algorithm with net electric output as the objective to determine operating conditions and working fluids. On this basis, the thermodynamic performance of the proposed SRCO<sub>2</sub>-MEOFC-HTSC system was compared with three existing configurations: SRCO<sub>2</sub>-organic flash cycle-HTSC (SRCO<sub>2</sub>-OFC-HTSC), SRCO<sub>2</sub>-regenerative organic flash cycle-HTSC (SRCO<sub>2</sub>-REOFC-HTSC), and SRCO<sub>2</sub>-organic rankine cycle-HTSC (SRCO<sub>2</sub>-ORC-HTSC). The evaluation was conducted from the perspectives of energy, exergy, economic impact. The results indicate that, using O-xylene as the working fluid for the organic cycle in all four coupled systems, the proposed system yields 3.3%-4.4% higher net power at an expander inlet temperature of 440 °C. After optimization, the optimal working fluid for each coupled system was identified, and under identical heat source conditions, an improvement of 7.0%-13.2% in net power output was achieved. From an economic perspective, the unit cost of energy generation is reduced by 1.8%-5.3% as the heat source temperature increases, while annual primary-energy savings are improved by 3.69%-9.49%. Regarding adaptability to heat source fluctuations, net power output increases by 68.5% to 82.4% over the heat source temperature range of 450-600 °C, demonstrating operational stability. These results confirm that the SRCO<sub>2</sub>-MEOFC-HTSC system exhibits significant advantages in energy efficiency, performance stability, and cost control.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140311"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187590","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

Joint development of tidal current energy in multi-channels surrounding Xiushan Island, China 秀山岛周边多通道潮汐能联合开发

IF 9.4 1区工程技术

Energy Pub Date : 2026-03-15 Epub Date: 2026-02-04 DOI: 10.1016/j.energy.2026.140327

Zhen Huang , Peng Dai , Jisheng Zhang

{"title":"Joint development of tidal current energy in multi-channels surrounding Xiushan Island, China","authors":"Zhen Huang , Peng Dai , Jisheng Zhang","doi":"10.1016/j.energy.2026.140327","DOIUrl":"10.1016/j.energy.2026.140327","url":null,"abstract":"<div><div>Xiushan Island is situated in Zhoushan waters, which harbors abundant tidal current energy resources in China, with complex sub-channels surrounding it. This study employs a high-resolution numerical model of tidal currents in Zhoushan waters to evaluate the tidal energy potential and explore the feasibility of integrated exploration of multi-channels around Xiushan Island. Furthermore, the study investigates the competitive effects of sub-channels and assesses the resulting redistribution of flow rate and velocity. Results show that the theoretical tidal current energy potential in the vicinity of Xiushan Island is approximately 1050 MW. Joint exploration of multiple channels yields an energy increase of 10.11% to 33.92% compared to the independent development of each channel. This phenomenon is induced by the competitive effects of flow dynamics when turbines are installed in the multi - channel zone. Numerical results demonstrate that the flow rate of the parallel channels can be increased by up to 17% during the development of individual channels. This integrated approach enables a more effective and comprehensive extraction of tidal current energy resources within the study area.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"347 ","pages":"Article 140327"},"PeriodicalIF":9.4,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146187624","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

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