IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136443

Wei Hong , Jun Li

{"title":"The impact of winter clean heating pilot on Chinese green energy efficiency—Based on multi-period difference-in-differences method","authors":"Wei Hong , Jun Li","doi":"10.1016/j.energy.2025.136443","DOIUrl":"10.1016/j.energy.2025.136443","url":null,"abstract":"<div><div>The clean energy transition effectively improved air quality, but also stimulated energy consumption and economic performance, causing complex impacts on overall energy efficiency. So what is the comprehensive impact of energy transition on energy efficiency considering air pollution? This paper used the stochastic frontier method to calculate the green energy efficiency of prefecture-level cities based on 7 years panel data of 280 prefecture-level cities in China, and adopted group-timing treatment effect estimator to study the dynamic and heterogeneous impact of <em>Central</em> Financial Support <em>for Winter Clean Heating Pilot in the Northern Region</em> on green energy efficiency. The results indicate the pilot increased cities’ green energy efficiency by an average of 0.00444. The improvement was significant only in early group of year 2017 and 2018, and the clean heating policy enhanced green energy efficiency after three years of implementation. Clean heating pilot affects green energy efficiency by improving air quality, stimulating energy consumption directly, and promoting green technology innovation indirectly, with enhance green energy efficiency of neighboring cities simultaneously. Our findings provide useful references for balancing environmental protection and economic development, as well as achieving sustainable energy utilization.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"328 ","pages":"Article 136443"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143937090","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

Effect of Mg-additive and carrier gas in flue gas torrefaction and gasification: Fuel properties, kinetics and thermodynamic analysis 镁添加剂和载气对烟气焙烧和气化的影响：燃料特性、动力学和热力学分析

IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136495

Xiaochao Zhu , Xiyue Sun , Beibei Yan , Donghao Hou , Songjiang Li , Shengquan Zhou , Guanyi Chen

{"title":"Effect of Mg-additive and carrier gas in flue gas torrefaction and gasification: Fuel properties, kinetics and thermodynamic analysis","authors":"Xiaochao Zhu , Xiyue Sun , Beibei Yan , Donghao Hou , Songjiang Li , Shengquan Zhou , Guanyi Chen","doi":"10.1016/j.energy.2025.136495","DOIUrl":"10.1016/j.energy.2025.136495","url":null,"abstract":"<div><div>Flue gas torrefaction (FGT) integrated with gasification based on Mg-additive (MgO-FGT-GS) is a promising biomass utilization approach. This study examined the influence of torrefaction atmosphere on the physicochemical characteristics, gasification products release, the kinetics and thermodynamics. MgO-FGT products exhibited the highest H/C ratio of 1.46. The HHV and energy density of torrefied products is 19.15 MJ/kg and 1.22. The optimum amount of O<sub>2</sub> and the maximum amount of CO<sub>2</sub> are the best for the improvement of fuel properties. Additionally, adjusting the flue gas composition controlled the composition of gasification products. The synergistic effect of FGT coupled with MgO enhances the release of combustible gas in the gasification stage. Kinetic and thermodynamic analyses indicated that torrefaction enhanced raw stability by eliminating hemicellulose. The destruction of cellulose by torrefaction improved gasification reactivity, and the Mg-additive catalysis of cellulose further improved reactivity. Higher O<sub>2</sub> and lower CO<sub>2</sub> content in flue gas exacerbated cellulose and hemicellulose destruction, detrimental to torrefaction. Overall, this research provides theoretical support for industrial applications of MgO-FGT-GS.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"328 ","pages":"Article 136495"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144068787","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 the mechanism of improving the energy-saving effect of green credit policy: green washing behavior and financial supervision 提高绿色信贷政策节能效果的机制研究：洗绿行为与金融监管

IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136485

Ting Pan , Boqiang Lin

{"title":"Research on the mechanism of improving the energy-saving effect of green credit policy: green washing behavior and financial supervision","authors":"Ting Pan , Boqiang Lin","doi":"10.1016/j.energy.2025.136485","DOIUrl":"10.1016/j.energy.2025.136485","url":null,"abstract":"<div><div>In recent years, governments have made many efforts to achieve energy conservation goals. As the most important green financial instrument in China, how to improve the energy-saving effect of green credit (GC) policy has become a topic of great concern. Based on the urban panel data from 2013 to 2022, this paper uses two-stage least squares (2SLS) method to investigate the energy-saving effect of GC. The study found: (1) GC can effectively reduce urban energy consumption (EC). (2) There is a certain difference between the energy-saving effect of GC and the theoretical energy-saving effect disclosed by bank ESG, indicating that the actual energy-saving effect of GC is not as expected. (3) Mechanism analysis found that poor supervision of financial institutions and green washing behavior are the main reasons for reducing the energy-saving effect of GC. (4) Heterogeneity analysis found that by improving the level of financial development and environmental law enforcement, energy saving effects can be effectively improved. This paper provides an effective policy reference for promoting the development of GC and urban energy saving and consumption reduction.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"327 ","pages":"Article 136485"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927908","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

Microstructure induced nanoparticle composite colloidal film forming coupled hydrophobic liquid delayed icing/frost properties 微观结构诱导纳米颗粒复合胶体膜形成耦合疏水液体延迟结冰/结霜性能

IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136481

Jing Li , Jiawen Fu , Xin Du , Jingran Zhang , Luquan Ren

{"title":"Microstructure induced nanoparticle composite colloidal film forming coupled hydrophobic liquid delayed icing/frost properties","authors":"Jing Li , Jiawen Fu , Xin Du , Jingran Zhang , Luquan Ren","doi":"10.1016/j.energy.2025.136481","DOIUrl":"10.1016/j.energy.2025.136481","url":null,"abstract":"<div><div>To enhance the performance of stainless steel materials in low temperature environments, a bioinspired hydrophobic surface with synergistic delayed icing/frosting properties was developed, mimicking the microstructural and chemical characteristics of natural surfaces exhibiting exceptional hydrophobicity and ice resistance. Advanced laser processing technology fabricated a precisely engineered polygonal microarray structure on stainless steel substrates. Subsequently, a nanocomposite colloidal was formulated, consisting of a TiO<sub>2</sub> polyurethane hybrid bonding colloid and CB-SiO<sub>2</sub> hybrid adhesive solution. These functional materials uniformly deposited onto the structured surface via spray coating, forming a robust, bond stabilized super liquid repellent coating with outstanding delayed icing/frosting performance. The experimental results demonstrate that the L-CB@SiO<sub>2</sub> SHCS exhibits superhydrophobic properties, with a static contact angle reaching up to 154.2° and a sliding angle less than 5°. Under cryogenic conditions (−10 °C and −15 °C), the surface significantly delayed ice nucleation by 6824 s and 1715 s, respectively. Moreover, the coating maintained excellent icephobicity, with water droplets completely shedding after 30 impact cycles without ice residue. Even after prolonged exposure 60 min, only a minimal frost layer formed. To elucidate the mechanistic basis of the composite colloidal film's superior anti-icing performance, comprehensive material characterization performed using XRD, FTIR and XPS. Furthermore, the coating durability rigorously assessed through sandpaper rubbing, ethanol hydrolysis, grit falling, and icing-melting cycle tests. The development of such advanced anti-icing stainless steel surfaces holds significant practical implications, as it can substantially reduce de-icing maintenance costs while extending the operational lifespan of cryogenic equipment.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"327 ","pages":"Article 136481"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143927922","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

Co-combustion of brewery spent grain and coal: optimization strategies and synergistic effects 啤酒废粮与煤混燃：优化策略及协同效应

IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136494

Zheng Wang , Xiang Meng , Jialin Yang , Mingjie Chen , Lijian Leng , Hailong Li , Hao Zhan

{"title":"Co-combustion of brewery spent grain and coal: optimization strategies and synergistic effects","authors":"Zheng Wang , Xiang Meng , Jialin Yang , Mingjie Chen , Lijian Leng , Hailong Li , Hao Zhan","doi":"10.1016/j.energy.2025.136494","DOIUrl":"10.1016/j.energy.2025.136494","url":null,"abstract":"<div><div>Brewery spent grain (BSG), rich in lignocellulose and protein, shows promise for waste-to-energy utilization via coal co-combustion. However, physicochemical incompatibilities necessitate optimized methods. This study integrated hydrothermal carbonization (HTC) into BSG/coal co-combustion, and three scenarios were systematically evaluated: raw BSG-coal blends, BSG-derived hydrochar and coal, and co-hydrochar from BSG and coal. Lignite demonstrated optimal synergy with untreated BSG (1:1 ratio), achieving superior combustion (index: 2.23 × 10<sup>−7</sup>) and interaction (0.46) metrics. HTC pretreatment of BSG at 210 °C enabled efficient lignite co-combustion, reducing burnout temperature to 621 °C while elevating combustion index to 3.73 × 10<sup>−7</sup>. Furthermore, co-HTC of BSG/lignite (1:3 ratio) at 210 °C maximized synergistic benefits, achieving the highest coefficients for energy recovery efficiency (1.09 %), caloric value (0.5 %), nitrogen reduction efficiency (16.12 %), and nitrogen content (−9.16 %). Among all scenarios, co-hydrochar combustion demonstrated optimal performance with low burnout temperature (627 °C), minimal activation energy (23.75 MJ kg<sup>−1</sup>), and suppressed NH<sub>3</sub>/NO/H<sub>2</sub>O emissions. These findings highlight HTC-assisted co-combustion as a sustainable solution for BSG valorization, offering operational advantages including cost-effective pretreatment, NO<sub><em>x</em></sub> mitigation, and combustion stability. The optimized protocols support scalable integration of bioresources into coal-fired systems, advancing circular economy strategies in energy production while addressing industrial biowaste challenges.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"327 ","pages":"Article 136494"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931552","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

Mineral resources and investment drive clean energy progress: Evidence from economic and governance effectiveness tiers 矿产资源和投资推动清洁能源进步：来自经济和治理效率层面的证据

IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136480

Jean Pierre Namahoro, Qiaosheng Wu, Beatrice Ihimbabzwe, Cheng Yang

{"title":"Mineral resources and investment drive clean energy progress: Evidence from economic and governance effectiveness tiers","authors":"Jean Pierre Namahoro, Qiaosheng Wu, Beatrice Ihimbabzwe, Cheng Yang","doi":"10.1016/j.energy.2025.136480","DOIUrl":"10.1016/j.energy.2025.136480","url":null,"abstract":"<div><div>This study explores how governance effectiveness and economic inequalities influence the role of mineral resources and investments in advancing clean energy. It examines the long-term effects of mineral resources (imports, rents, and depletion) and investments (energy investment, industrial employment, and GDP share) on clean energy progress imbedded in installed solar capacity (ISC), installed wind capacity (IWC), and electricity generated from renewables (EGR). The study analyzes datasets from 1992 to 2021 across 51 countries, categorized by governance effectiveness and economic tiers, using a cross-sectional augmented distributed lags model. Key findings highlight that mineral imports and rents positively affect EGR and IWC from lower middle to high-income countries. These positive impacts occur across governance tiers ranging from weak to strong. Mineral depletion significantly affects EGR, ISC, and IWC across all governance and economic levels, though ISC and IWC effects vary. Energy investments boost EGR, while industrial employment and GDP yield mixed outcomes on ISC, IWC, and EGR. The findings highlight that as governance effectiveness and economic tiers improved, amplify the positive influence of mineral resources and energy investments on EGR. The study suggests targeted policies to optimize the role of mineral resources and investments in promoting clean energy development.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"327 ","pages":"Article 136480"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923498","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

Thermal resilience to climate change of energy retrofit technologies for building envelope 建筑围护结构节能改造技术对气候变化的热弹性

IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136489

Giuseppe Aruta , Fabrizio Ascione , Teresa Iovane , Margherita Mastellone

{"title":"Thermal resilience to climate change of energy retrofit technologies for building envelope","authors":"Giuseppe Aruta , Fabrizio Ascione , Teresa Iovane , Margherita Mastellone","doi":"10.1016/j.energy.2025.136489","DOIUrl":"10.1016/j.energy.2025.136489","url":null,"abstract":"<div><div>Over the past 20 years, energy retrofit measures for buildings, such as thermal insulation and window replacement, were standard practices. To further enhance the energy performance of building envelopes, innovative technologies like double-skin façades, opaque ventilated façades, and green roofs are also available, fostering a positive interaction between buildings and the environment. The paper evaluates the resilience of building technologies in relation to climate evolution and warming, considering both general (chronic) overheating and (spot) extreme events. Energy performances of a reference office, applying traditional and innovative energy retrofit packages, are analyzed under historical, current, and future weather conditions across three locations. The research questions and novelty are whether both traditional and innovative energy retrofits remain effective under climatic evolution and how the effectiveness of traditional versus innovative building technologies changes. Regarding space-heating energy demand, both retrofits are equally effective and resilient. For space cooling, the innovative package proves more effective under moderate conditions. However, under extreme outdoor conditions, traditional thermal insulation technologies may be more effective than innovative technologies. Attention is required when indoor temperatures are free-floating, as excessive thermal protection can imply indoor overheating. Ultimately, the thinking approach for energy retrofit measures should focus on long-term effectiveness and resilience.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"327 ","pages":"Article 136489"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923499","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

Interactions of biomass constituents and the effect on the hydrogen storage molecules during fast pyrolysis 快速热解过程中生物质组分的相互作用及其对储氢分子的影响

IF 9 1区工程技术

Energy Pub Date : 2025-05-08 DOI: 10.1016/j.energy.2025.136428

Wensheng Xie , Fahim Ullah , Yongming Lu , Yuhang Yao , Ye Shui Zhang , Yutao Zhang , Guozhao Ji , Aimin Li

{"title":"Interactions of biomass constituents and the effect on the hydrogen storage molecules during fast pyrolysis","authors":"Wensheng Xie , Fahim Ullah , Yongming Lu , Yuhang Yao , Ye Shui Zhang , Yutao Zhang , Guozhao Ji , Aimin Li","doi":"10.1016/j.energy.2025.136428","DOIUrl":"10.1016/j.energy.2025.136428","url":null,"abstract":"<div><div>Biomass pyrolysis oils are anticipated to serve as a source of bio-based platform chemicals and hydrogen storage molecules, primarily from the decomposition of holocellulose (cellulose and hemicellulose). This study examined the influence of component interactions among the thermal behavior, product distribution, and gas composition of the samples. The results show that in the cellulose and hemicellulose mixtures, the increase in hemicellulose promotes gas and solid production while inhibiting oil yield. However, the increasing hemicellulose reduced the production of aldehydes, acids, and ketones (a result corroborated by infrared characterization), including hydrogen storage molecules, with the most pronounced promotion occurring only in samples with cellulose to hemicellulose equivalence ratio of 2:1. Furthermore, lignin was added to samples with a cellulose-to-hemicellulose ratio of 1:1. The results demonstrated that the increasing lignin also promoted gas and solid production while inhibiting oil yield. Notably, even small amounts of lignin significantly increase the formation of small and hydrogen storage molecules by activating holocellulose through lignin side chain groups. However, a further increase in lignin also reduced the generation of hydrogen storage molecules. This study offers valuable insights for selecting proper raw materials for the generation of platform chemicals and hydrogen storage molecules.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"328 ","pages":"Article 136428"},"PeriodicalIF":9.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947882","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

Off-road hybrid electric vehicle energy management strategy using multi-agent soft actor-critic with collaborative-independent algorithm

IF 9 1区工程技术

Energy Pub Date : 2025-05-07 DOI: 10.1016/j.energy.2025.136463

Hui Liu , Congwen You , Lijin Han , Ningkang Yang , Baoshuai Liu

{"title":"Off-road hybrid electric vehicle energy management strategy using multi-agent soft actor-critic with collaborative-independent algorithm","authors":"Hui Liu , Congwen You , Lijin Han , Ningkang Yang , Baoshuai Liu","doi":"10.1016/j.energy.2025.136463","DOIUrl":"10.1016/j.energy.2025.136463","url":null,"abstract":"<div><div>Hybrid electric vehicles (HEVs) reduce carbon emissions and save energy, and hybrid energy storage system (HESS) consist of a battery and a supercapacitor which has high energy density and high power density. The HEV equipped with HESS performs better in off-road conditions than single energy storage source. However, its energy management requires multiple input and multiple output (MIMO) control. In this paper, a multi-agent soft actor-critic (MASAC) based energy management strategy (EMS) is proposed to solve the multi-objective optimizing problem considering fuel economy, maintaining state of charge (SOC) and reducing battery state of health (SOH) decay. MASAC based EMS has two advantages: 1) it decomposed the search space into two subspaces, improving the learning efficiency. 2) a novel collaborative-independent algorithm is proposed to allocate rewards among agents, thereby improving the learning stability. Thus, the optimal actions are efficiently and collaboratively learned by two agents, engine agent and HESS agent, showing better performance in multi-objective optimization. In the simulation, the proposed EMS is compared with dynamic programming (DP) and soft actor-critic (SAC) in both off-road driving cycle and standard driving cycles. Simulation results show that the proposed collaborative-independent algorithm enhances the learning efficiency and learning stability of MASAC, while improving the real-time performance of EMS. In off-road conditions, the equivalent fuel consumption of MASAC is slightly better than that of DP. The SOH decay of MASAC is only 20 % higher than DP, significantly outperforming SAC. Furthermore, MASAC demonstrates superior performance in three standard working cycles when compared with SAC.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"328 ","pages":"Article 136463"},"PeriodicalIF":9.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143942922","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 management in a concentrated solar photovoltaic panel with a thermoelectric module and nanomaterial-filled storage tank 具有热电模块和纳米材料填充储罐的聚光太阳能光伏板的能量管理

IF 9 1区工程技术

Energy Pub Date : 2025-05-07 DOI: 10.1016/j.energy.2025.136439

M. Sheikholeslami , A.M. Alinia

{"title":"Energy management in a concentrated solar photovoltaic panel with a thermoelectric module and nanomaterial-filled storage tank","authors":"M. Sheikholeslami , A.M. Alinia","doi":"10.1016/j.energy.2025.136439","DOIUrl":"10.1016/j.energy.2025.136439","url":null,"abstract":"<div><div>This article scrutinizes the modeling of a Concentrated Photovoltaic-Thermal (CPVT) system incorporating a paraffin container. The CPVT setup integrates cylindrical and parabolic reflectors into the panel, utilizing RT-28HC as the paraffin and water as the working fluid implementing nano-powders. Fins are added to the absorber pipe within the paraffin container to improve energy storage, while a thermoelectric (TE) module beneath the silicon layer boosts electricity generation. Two CPVT setups are examined, exploring different fin configurations and reflectors. Visual representations like plots and contours illustrate the impact of key parameters, with model verification confirming alignment with prior research. Among the configurations tested, the combination of a parabolic reflector and seven fins leads to the highest heat storage within the paraffin layer. This configuration achieves an overall efficiency of 68.37 %. The addition of a parabolic reflector with seven fins results in the highest electrical power output. Within CPVT systems, this setup demonstrates exceptional performance, emphasizing the importance of meticulous component integration for superior results.</div></div>","PeriodicalId":11647,"journal":{"name":"Energy","volume":"328 ","pages":"Article 136439"},"PeriodicalIF":9.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947889","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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