Energy最新文献 - Book学术

Thermodynamic analysis of a novel high-efficiency coal-based sCO2 power cycle combining semi-closed oxy-combustion cycle with sCO2 Brayton cycle 半闭式氧燃循环与sCO2 Brayton循环相结合的新型高效煤基sCO2动力循环热力学分析

IF 9 1区工程技术

Energy Pub Date : 2025-07-22 DOI: 10.1016/j.energy.2025.137659

Zheng Miao , Mengmeng Tian , Chaozheng Wang , Jinliang Xu

{"title":"Thermodynamic analysis of a novel high-efficiency coal-based sCO2 power cycle combining semi-closed oxy-combustion cycle with sCO2 Brayton cycle","authors":"Zheng Miao , Mengmeng Tian , Chaozheng Wang , Jinliang Xu","doi":"10.1016/j.energy.2025.137659","DOIUrl":"10.1016/j.energy.2025.137659","url":null,"abstract":"<div><div>The semi-closed oxy-combustion cycle (SCOCC) is a highly promising low-carbon power generation technology. When it is applied to coal-based fuels, the inefficient recovery of raw syngas heat during coal gasification constrains the cycle performance due to the limitation of the allowable temperature of heat exchangers. This study develops a novel coal-based supercritical CO<sub>2</sub> (sCO<sub>2</sub>) power cycle that thermally integrates the sCO<sub>2</sub> Brayton cycle into the SCOCC to make full use of the raw syngas heat. The thermodynamic analysis reveals that the sCO<sub>2</sub> Brayton cycle recovers 71 % of the raw syngas heat and contributes 12 % to the total net output power. The proposed power cycle achieves a system efficiency of 48.69 %, representing an 8.11 % improvement over the basic cycle. The system exergy efficiency rises from 37.69 % to 45.22 %, with the gasifier and combustor identified as the primary sources of exergy losses. Sensitivity analysis reveals that cold gas efficiency has the greatest impact on system performance, with a 1 % increase leading to a 0.62 % efficiency gain. Turbine isentropic efficiency ranks as the second most significant factor, whereas compressor isentropic efficiency and pinch point temperature difference (PPTD) have comparatively minor influences. After parameter optimization, the coal-based sCO<sub>2</sub> power cycle attains a system efficiency of 51.28 % under conditions of a 5 °C PPTD, 84 % cold gas efficiency, and turbine and compressor isentropic efficiencies of 0.93 and 0.91, respectively.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137659"},"PeriodicalIF":9.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685649","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

Adaptive transfer learning for household return water temperature prediction based on domain discrepancy metric 基于域差异度量的家庭回水温度预测自适应迁移学习

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137692

Chenhao Gao , Jihong Ling , Meng Wang , Zhixian Yang , Xuejing Feng

{"title":"Adaptive transfer learning for household return water temperature prediction based on domain discrepancy metric","authors":"Chenhao Gao , Jihong Ling , Meng Wang , Zhixian Yang , Xuejing Feng","doi":"10.1016/j.energy.2025.137692","DOIUrl":"10.1016/j.energy.2025.137692","url":null,"abstract":"<div><div>Individual household temperature control in district heating systems is crucial for improving energy efficiency and comfort. However, the limited availability of indoor temperature monitoring in Chinese residential buildings constrains the implementation of individualized household control. To address this issue, this study proposes a household return water temperature prediction model based on transfer learning for indoor temperature regulation. By classifying households into groups based on thermal load characteristics, a base model is first trained on households with available indoor temperature data (source domain) within each group, and then transferred via transfer learning to predict for households without indoor temperature data (target domain) in the same group. The base model for return water temperature prediction can achieve an MAE of 0.28–0.66 °C and a MAPE below 2.1 %. In the domain adaptation framework, the ratio of heat consumption (QK) and the difference in heat consumption (ΔQ) between the source and target domains are incorporated as domain discrepancy metrics to enhance the transfer model's robustness. Three households with distinct distribution characteristics are selected as case studies. The proposed model yields an average MAE of 0.47 °C and an average MAPE of 1.44 %. Compared to the traditional station-level and building-level uniform return water temperature control methods for households, the proposed model reduces the relative error by 5.7 % and 9.13 %, respectively, effectively improving the accuracy of individualized control.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137692"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685673","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

Forecast-integrated techno-economic optimization of off-grid hybrid renewable system in hyper-arid regions: Application to Tamanrasset, Algeria 超干旱区离网混合可再生能源系统预测综合技术经济优化：在阿尔及利亚塔曼拉塞特的应用

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137468

Hadda Zereg, Hassen Bouzgou

{"title":"Forecast-integrated techno-economic optimization of off-grid hybrid renewable system in hyper-arid regions: Application to Tamanrasset, Algeria","authors":"Hadda Zereg, Hassen Bouzgou","doi":"10.1016/j.energy.2025.137468","DOIUrl":"10.1016/j.energy.2025.137468","url":null,"abstract":"<div><div>This study presents a novel framework for the optimal design of an off-grid residential energy system, applied to the hyper-arid region of Tamanrasset, Algeria. The proposed hybrid renewable energy system (HRES) integrates photovoltaic panels, wind turbines, battery storage, and diesel generators. A key innovation is the integration of a green energy forecasting module within a multi-objective techno-economic optimization process. Various machine learning and deep learning models suited for time series prediction were evaluated, and the best-performing models for each meteorological parameter were selected which enables precise long-term hourly forecasts, improving system design and operational efficiency compared to conventional methods based on historical averages. The optimization targets three objectives: minimizing the Levelized Cost of Energy (LCOE), reducing the Loss of Power Supply Probability (LPSP), and maximizing the Reliability Factor (RF). Using the Multi-Objective Particle Swarm Optimization (MOPSO) algorithm, the system achieves an LCOE of $0.05433/kWh, an LPSP of 3.1 %, and an RF of 98 %, indicating a strong balance between cost and reliability. Energy contributions are 47 % from solar PV, 35 % from batteries, 12 % from wind, and 6 % from diesel. Comparison with HOMER Pro simulations confirms the superior economic performance of the MOPSO-based configuration. Sensitivity analyses underscore the critical role of forecast accuracy in HRES performance, while environmental assessments show an 80 % reduction in CO<sub>2</sub> emissions compared to diesel-only systems. The integrated forecasting module serves as a valuable decision-support tool for rural electrification, particularly in resource-constrained and climate-challenged regions.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137468"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670249","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

High-performance aqueous zinc-ion hybrid micro-supercapacitors enabled by surface-modified Ti3C2 MXene anode and polar organic molecule intercalated AlxV2O5 cathode 采用表面改性ti3c2mxene阳极和极性有机分子插层AlxV2O5阴极制备高性能锌离子杂化微型超级电容器

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137648

Weifeng Liu , Jixuan Zhang , Jitao Li , Zhuang Ma , Lingling Sun , Yamin Feng , Long Zhang

{"title":"High-performance aqueous zinc-ion hybrid micro-supercapacitors enabled by surface-modified Ti3C2 MXene anode and polar organic molecule intercalated AlxV2O5 cathode","authors":"Weifeng Liu , Jixuan Zhang , Jitao Li , Zhuang Ma , Lingling Sun , Yamin Feng , Long Zhang","doi":"10.1016/j.energy.2025.137648","DOIUrl":"10.1016/j.energy.2025.137648","url":null,"abstract":"<div><div>The Ti<sub>3</sub>C<sub>2</sub>T<sub><em>x</em></sub> MXene has emerged as an ideal anode material for aqueous Zn-ion hybrid micro-supercapacitors (AZHMSCs) due to its high conductivity, excellent stretchability, and modifiable surface functional groups. However, the interlayer stacking effect and inert –F functional groups limit its ion transport and charge storage capabilities. In this study, a deep alkali treatment strategy is proposed to convert Ti<sub>3</sub>C<sub>2</sub>T<sub><em>x</em></sub> MXene nanosheets into m-Ti<sub>3</sub>C<sub>2</sub> MXene nanofibers with oxygen-rich surface terminal functional groups. This structure not only alleviates interlayer stacking but also shows enhanced Zn<sup>2+</sup> adsorption affinity via oxygen groups, resulting in a specific capacitance of 1231.8 mF cm<sup>−2</sup> at 1 mA cm<sup>−2</sup>. Meanwhile, the cathode employs polar organic molecules, specifically NMP, intercalated into Al<sub><em>x</em></sub>V<sub>2</sub>O<sub>5</sub>. The strong electrostatic interaction between NMP and pre-embedded aluminum ions improves material structural stability (96.05 % capacity retention after 5000 cycles) and enhances specific capacity (327.78 μAh cm<sup>−2</sup> at 0.5 mA cm<sup>−2</sup>). AZHMSCs assembled with these modified electrodes exhibit excellent electrochemical performance: an energy density of 105.15 μWh cm<sup>−2</sup> at a power density of 0.48 mW cm<sup>−2</sup>, capacity retention rate of 89.29 % after 3000 cycles, and good bending stability. This study offers a novel approach for electrode design and the construction of high-performance micro-energy storage devices.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137648"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679198","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

Novel conceptual design and performance analysis of a semi-submersible platform for 22 MW floating offshore wind turbine 22mw海上浮式风力机半潜式平台新概念设计及性能分析

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137605

Wei Shi , Jiazhi Wang , Yajun Ren , Shuaishuai Wang , Vengatesan Venugopal , Xu Han

{"title":"Novel conceptual design and performance analysis of a semi-submersible platform for 22 MW floating offshore wind turbine","authors":"Wei Shi , Jiazhi Wang , Yajun Ren , Shuaishuai Wang , Vengatesan Venugopal , Xu Han","doi":"10.1016/j.energy.2025.137605","DOIUrl":"10.1016/j.energy.2025.137605","url":null,"abstract":"<div><div>This research presents the conceptual design and performance analysis of a large-scale semi-submersible floating offshore wind turbine platform, named DUT-Semi, which features a simple and compact structural layout. It is specifically designed to address the enhanced demands for stability and hydrodynamic performance arising from the enlarged hub height and rotor diameter of the IEA 22 MW wind turbine. The DUT-Semi incorporates several innovations on structural layout, including cylindrical pontoons arranged in a T-shape for adequate displacement, Co-pontoons that ensure smooth transitions between side columns and pontoons, and Base plate structure for simplifying main column installation. These innovations aim to ensure motion performance while reducing construction costs and enhancing structural safety. To prevent excessive redundancy in DUT-semi design, this study compares and examines its stability and hydrodynamic response against another floating platform. The results demonstrate the reliability of DUT-semi across all six degrees of freedoms, even under coupled extreme loading conditions, including a 50-year wind event. Mooring line tension analysis also highlights the advantages of the proposed cost-effective mooring system in distributing tension and enhancing mooring safety. These design innovations offer reference for the future commercial design of floating platforms and mooring systems in the realm of offshore wind energy.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137605"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679212","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 effective porous Co-N-C electrocatalyst deriving Prussian-blue-analog for oxygen reduction of zinc-air battery 一种有效的多孔Co-N-C电催化剂用于锌空气电池氧还原的普鲁士蓝模拟物

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137687

Tiantong Xu, Tiantian Liu, Yaoan Shi, Han Zhang, Na Zhao, Wei Wang

{"title":"An effective porous Co-N-C electrocatalyst deriving Prussian-blue-analog for oxygen reduction of zinc-air battery","authors":"Tiantong Xu, Tiantian Liu, Yaoan Shi, Han Zhang, Na Zhao, Wei Wang","doi":"10.1016/j.energy.2025.137687","DOIUrl":"10.1016/j.energy.2025.137687","url":null,"abstract":"<div><div>The exploration of advanced carbon electrocatalysts derived from Prussian-blue-analog (PBA, Co<sub>3</sub>[Co(CN)<sub>6</sub>]<sub>2</sub>) to replace precious metals such as Pt and Pd for the oxygen reduction reaction (ORR) has attracted significant attention. In this study, a porous Co-N-C carbon electrocatalyst (PBA-p-CoNC) was derived from PBA and developed for application in rechargeable zinc-air batteries (ZABs). Notably, the as-prepared PBA-p-CoNC exhibits a large surface area (1105.0 m<sup>2</sup> g<sup>−1</sup>) and good ORR activity, with a half-wave potential (<em>E</em><sub>1/2</sub>) of 0.901 V, surpassing that of commercial 20 % Pt/C (0.865 V). Importantly, after 2500 cycles, the <em>E</em><sub>1/2</sub> loss of PBA-p-CoNC is only 29.0 mV, which is remarkably lower than that of Pt/C (75.7 mV after 1000 cycles). In the chronoamperometry test, the current decay rate of PBA-p-CoNC is 17.6 % for 50,000 s, also superior than Pt/C (18.4 %). And the ZAB assembled with PBA-p-CoNC has a high capacity per unit of 848.8 mAh g<sub>zn</sub><sup>−1</sup> at a current density of 10 mA cm<sup>−2</sup>, with good charge-discharge capability and stability over the long term (more than 159 h). These performances outperform commercial Pt/C + RuO<sub>2</sub> cathodes, underscoring the potential of PBA-derived carbon materials in future energy conversion applications.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137687"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685650","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 energy management strategies for ammonia-hydrogen internal combustion engine hybrid electrical vehicles 氨氢内燃机混合动力汽车能量管理策略研究

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137548

Song Xu, Chen Hong, Shuofeng Wang, Yanfei Qiang, Shihao Zhao, Jiankun Xiang, Jinxin Yang, Changwei Ji

{"title":"Research on energy management strategies for ammonia-hydrogen internal combustion engine hybrid electrical vehicles","authors":"Song Xu, Chen Hong, Shuofeng Wang, Yanfei Qiang, Shihao Zhao, Jiankun Xiang, Jinxin Yang, Changwei Ji","doi":"10.1016/j.energy.2025.137548","DOIUrl":"10.1016/j.energy.2025.137548","url":null,"abstract":"<div><div>A zero-carbon hybrid system combining ammonia and hydrogen in an internal combustion engine (AHICE) leverages their complementary strengths: ammonia provides high energy density and low-cost storage, while hydrogen enables rapid combustion and reduced nitrogen oxide emissions. This synergy addresses carbon-free fuel challenges and enhances energy efficiency. The system integrates a power battery to supplement engine output, allowing the AHICE to operate within its optimal efficiency range and improve fuel economy. Nevertheless, the presence of two power sources in the hybrid power system introduces a greater degree of complexity concerning the control of the power system. Consequently, energy management strategies are required to ensure the reasonable allocation of the power output of the AHICE and the power battery. This work proposes an ammonia-hydrogen hybrid powertrain energy management strategy for passenger cars. Bench testing explored the power output and fuel efficiency of an AHICE, establishing the groundwork for engine modeling. Subsequently, a hybrid powertrain model is developed, and an optimization-based ECMS is introduced to enhance the fuel efficiency of the hybrid system. Finally, the simulation results indicate that the proposed ECMS-D achieves a 5.68 % improvement in fuel economy and reduces the equivalent hydrogen consumption. Moreover, the control strategy reduces the power battery's SOC fluctuation range. This provides the basis for the application of a zero-carbon hybrid system in passenger cars.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137548"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670294","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

Critical thresholds of pre-oxidation in coal spontaneous combustion: microstructural drivers and kinetic implications 煤自燃预氧化临界阈值：微观结构驱动和动力学意义

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137598

Mingyue Hao , Botao Qin , Hongqi Yang , Quanlin Shi

{"title":"Critical thresholds of pre-oxidation in coal spontaneous combustion: microstructural drivers and kinetic implications","authors":"Mingyue Hao , Botao Qin , Hongqi Yang , Quanlin Shi","doi":"10.1016/j.energy.2025.137598","DOIUrl":"10.1016/j.energy.2025.137598","url":null,"abstract":"<div><div>During mining, the residual coal in the goaf and roadway undergoes continuous oxidation in a complex environment characterized by air leakage. The oxidation temperature and oxygen concentration fluctuate with the leakage of air, which leads to changes in the spontaneous combustion characteristics and microstructure of the residual coal. To investigate the impact of pre-oxidation on the spontaneous combustion characteristics and microstructure of loose coal, coking coal was pre-oxidized in the laboratory under varying temperature and oxygen concentration conditions. The pore structure, functional group content, gas oxidation products, and exothermic characteristics of both the pre-oxidized coal and the raw coal were compared using programmed heating, simultaneous thermal analysis, Fourier-transform infrared spectroscopy, and low-temperature nitrogen adsorption techniques. The results indicated that the temperature range in which the pre-oxidized coal is more prone to spontaneous combustion than the raw coal is 70–100 °C, with an oxygen concentration range of 5 %–10 %. Under these pre-oxidation conditions, the oxygen consumption during secondary oxidation increases, leading to higher concentrations of indicator gases such as CO and C<sub>2</sub>H<sub>4</sub>. Additionally, the cross-point temperature decreases, while the ignition point temperature and temperature of the maximum oxidation rate are lowered. The active group content increases, the pore structure develops, and the specific surface area expands, thereby increasing the risk of spontaneous combustion. When the pre-oxidation temperature and oxygen concentration are excessively high, the spontaneous combustion tendency of the coal is reduced, and the initial generation temperature of C<sub>2</sub>H<sub>4</sub> during secondary oxidation increases. This study provides valuable insights into the development of coal spontaneous combustion early warning systems in coal mines.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137598"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685646","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 consumption analysis and parameter optimization of CO2 desorption in a structured packaged column 结构包装塔CO2脱附能耗分析及参数优化

IF 9 1区工程技术

Energy Pub Date : 2025-07-21 DOI: 10.1016/j.energy.2025.137672

Kefei Li , Yue Wu , Yiming Bai , Hai Yan , Yiming Wang , Yuzhe Guan , Liang Li , Guicheng Liu

{"title":"Energy consumption analysis and parameter optimization of CO2 desorption in a structured packaged column","authors":"Kefei Li , Yue Wu , Yiming Bai , Hai Yan , Yiming Wang , Yuzhe Guan , Liang Li , Guicheng Liu","doi":"10.1016/j.energy.2025.137672","DOIUrl":"10.1016/j.energy.2025.137672","url":null,"abstract":"<div><div>Reducing the energy consumption of CO<sub>2</sub> regeneration is crucial for enhancing the economic feasibility of CO<sub>2</sub> capture processes. While most studies have focused on developing novel absorbents, the influence of operating parameters on gas-liquid mass transfer behavior and their subsequent impact on energy consumption has received limited attention. This study experimentally investigates the regeneration heat duty <em>(Q</em><sub><em>reg</em></sub><em>)</em> for CO<sub>2</sub> desorption from a 1-(Dimethylamino)-2-propanol (1DMA2P)/2-Methylaminoethanol (MAE) aqueous blend in a lab-scale stripper equipped with high-efficiency Sulzer DX structured packing. The effects of key operating parameters, including rich CO<sub>2</sub> loading, lean CO<sub>2</sub> loading, solution flow rate, amine concentration, and synergistic parameters (Δ<em>α</em> × <em>L</em> and <em>C</em> × <em>L</em>), on <em>Q</em><sub><em>reg</em></sub> were systematically analyzed. The experimental results showed that all these factors greatly influenced <em>Q</em><sub>reg</sub>. For example, the <em>Q</em><sub><em>reg</em></sub> decreases as the lean CO<sub>2</sub> loading <em>(α</em><sub><em>lean</em></sub><em>)</em>, rich CO<sub>2</sub> loading <em>(α</em><sub><em>rich</em></sub><em>)</em>, and 1DMA2P/MAE concentration <em>(C)</em> increase, indicating that the <em>Q</em><sub><em>reg</em></sub> can be reduced by optimizing these operating parameters. Additionally, compared with MEA, 1DMA2P/MAE reduces energy consumption by 51.5 % and decreases the stripper height by 35 %. This study underscores the critical role of operating parameters in reducing CO<sub>2</sub> regeneration energy consumption. The findings provide valuable insights into optimizing stripper performance and demonstrate the advantages of the 1DMA2P/MAE blend as an energy-efficient alternative to MEA-based solvents in industrial CO<sub>2</sub> capture applications.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137672"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685651","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

Low-energy consumption growth of agriculture in China: From the perspective of decoupling between agricultural energy consumption and agricultural economic growth 中国农业低能耗增长：基于农业能源消费与农业经济增长脱钩的视角

IF 9 1区工程技术

Energy Pub Date : 2025-07-19 DOI: 10.1016/j.energy.2025.137677

Yao Zhang, Yingming Zhu, Ziyan Zheng, Yuyao Zhu

{"title":"Low-energy consumption growth of agriculture in China: From the perspective of decoupling between agricultural energy consumption and agricultural economic growth","authors":"Yao Zhang, Yingming Zhu, Ziyan Zheng, Yuyao Zhu","doi":"10.1016/j.energy.2025.137677","DOIUrl":"10.1016/j.energy.2025.137677","url":null,"abstract":"<div><div>On the premise of ensuring agricultural economic growth and energy security, promoting the decoupling between agricultural energy consumption and agricultural economic growth is pivotal for China to achieve carbon peaking and carbon neutrality goals in agricultural sector. This study calculated the agricultural energy consumption in China from 2006 to 2022 based on the energy conversion coefficients of various agricultural inputs. On this basis, the decoupling statuses between agricultural energy consumption and agricultural economic growth in China were analyzed using the Tapio decoupling model, and the mechanism influencing the decoupling statuses was explored using the geographically and temporally weighted regression (GTWR) model. The findings show that: (1) Agriculture in China has entered an era of low-energy consumption growth (2018–2022). (2) The relationship between agricultural energy consumption and agricultural economic growth has gotten over the inflection point on the energy Kuznets curve (inverted U curve), entering a stage of strong decoupling with continuous fluctuations. (3) The decoupling statuses between agricultural energy consumption and agricultural economic growth features spatial correlation. (4) Agricultural cropping structure, agricultural technological innovation, labor force quality, environmental regulation, marketization, government support, rainfall, and agricultural insurance have nonlinear effects on the decoupling statuses, with significantly varying influential effects across different provinces.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"334 ","pages":"Article 137677"},"PeriodicalIF":9.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685654","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