Renewable Energy最新文献_第2页

Reaction cross-flow turbine for small hydropower plants: Flow profile design and CFD analysis 小型水电站反流式水轮机：流型设计与CFD分析

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123560

Roman Lukeš , Stanislav Honus , Tomáš Blejchař , Mário Balco

{"title":"Reaction cross-flow turbine for small hydropower plants: Flow profile design and CFD analysis","authors":"Roman Lukeš , Stanislav Honus , Tomáš Blejchař , Mário Balco","doi":"10.1016/j.renene.2025.123560","DOIUrl":"10.1016/j.renene.2025.123560","url":null,"abstract":"<div><div>Harnessing hydropower efficiently is crucial for sustainable energy production. Traditional impulse Cross-Flow turbines do not fully utilize the available hydraulic head, limiting their effectiveness in small-scale hydropower. The Reaction Cross-Flow turbine introduced in this study overcomes this limitation by operating as a reaction turbine, enabling full head utilization at a given site. This approach increases energy extraction and expands the applicability of Cross-Flow technology especially in run-of-river hydropower plants. This study presents a novel design approach for a Reaction Cross-Flow turbine, focusing on performance and structural optimization. A computational methodology was developed and applied to a turbine with a flow rate of 120 l/s and a head of 5.5 m. Transient numerical simulations in Ansys CFX validated the design, demonstrating a hydraulic efficiency of 79.43 %, with further potential for improvement. The resulting turbine features a compact and simplified construction compared to existing designs. This research encourages further optimization of key design aspects, such as blade geometry, cavitation control, and outlet channel configuration. The findings suggest promising directions for future studies, including the adaptation of the turbine for reverse operation. The proposed design framework serves as a foundation for advancing Reaction Cross-Flow turbine technology and improving hydropower efficiency.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123560"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144167062","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

Enhanced solar energy utilization in a hybrid system integrating tandem solar cell and thermally regenerative electrochemical devices 串联太阳能电池与热再生电化学装置相结合的混合系统提高太阳能利用效率

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123558

Liqiong Qu, Yuewu Huang, Lu Yan, Qinger Wang

{"title":"Enhanced solar energy utilization in a hybrid system integrating tandem solar cell and thermally regenerative electrochemical devices","authors":"Liqiong Qu, Yuewu Huang, Lu Yan, Qinger Wang","doi":"10.1016/j.renene.2025.123558","DOIUrl":"10.1016/j.renene.2025.123558","url":null,"abstract":"<div><div>An innovative solar-powered integrated system is proposed, combining a perovskite/homojunction tin sulfide (PSC/SnS) tandem solar cell, a solar selective absorber (SSA), and thermally regenerative electrochemical cycles/refrigerators (TRECs-TRERs) to maximize solar energy utilization. The PSC/SnS tandem solar cell (TSC), with well-matched bandgaps, efficiently converts a wider solar spectrum into electricity, while the SSA harnesses unabsorbed spectral components to drive cascaded TRECs-TRERs, providing additional cooling alongside power generation. Mathematical models incorporating irreversible physical and chemical processes are developed to elucidate the interaction between the TSC and the TRECs-TRERs system. Comprehensive analysis identifies key parameters influencing system performance, including operating temperature, defect density, doping density, work function of contact materials, regenerative efficiency, and internal resistance of TRECs-TRERs. The hybrid system maintains relatively stable efficiency under fluctuating operating temperatures, mitigating typical high-temperature degradation. Optimized parameters yield a maximum output power density of 368.1 W·m-<sup>2</sup> and a maximum energy efficiency of 36.81 %, demonstrating a 57.76 % enhancement over standalone PSC. This study provides valuable guidance the design of high-efficiency solar energy systems with integrated heat and power management.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123558"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154715","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

Numerical optimization and performance study of a photovoltaic/thermal module based on multi-stage V-type turbulators 基于多级v型紊流器的光伏/热模块数值优化与性能研究

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123559

Yong Zhang , Yang Zhao , Heng Zhang , Chao Cheng , Dan Gao , Haiping Chen , Jizhen Liu

{"title":"Numerical optimization and performance study of a photovoltaic/thermal module based on multi-stage V-type turbulators","authors":"Yong Zhang , Yang Zhao , Heng Zhang , Chao Cheng , Dan Gao , Haiping Chen , Jizhen Liu","doi":"10.1016/j.renene.2025.123559","DOIUrl":"10.1016/j.renene.2025.123559","url":null,"abstract":"<div><div>The utilization of solar energy is one of the important ways to ensure low-carbon energy transformation, and PV/T technology, as an efficient technology for utilizing solar energy, has received widespread attention in recent years. This paper proposes a photovoltaic/thermal (PV/T) module based on a multi-stage V-type turbulator, and explores the optimization design of the system through numerical simulation and experimental research. To improve thermal and electrical efficiency, the paper integrates a turbulence-enhancing V-type turbulator design and utilizes a Computational Fluid Dynamics (CFD) model for detailed system analysis. Experimental results show that the optimized PV/T system achieves a 9 %–12 % increase in electrical efficiency compared to conventional PV systems under standard solar irradiance conditions, with overall system efficiency exceeding 65 %. Through optimization using the Response Surface Methodology (RSM), the optimal turbulator design parameters were determined to be an angle <em>α</em> of 60°, an inclination angle <em>β</em> of 61.1°and a distance D of 0 mm. This article also compared three conventional channels to verify the heat transfer performance of the multi-stage V-shaped vortex generator PV/T.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123559"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144134822","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

Interpretable hybrid artificial intelligence model for predicting daily hydropower generation of cascade hydropower reservoirs 梯级水电站日发电量预测的可解释混合人工智能模型

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123548

Jing-shuai Zhang , Zhong-kai Feng , Xin-yue Fu , Wen-jie Liu , Wen-jing Niu

{"title":"Interpretable hybrid artificial intelligence model for predicting daily hydropower generation of cascade hydropower reservoirs","authors":"Jing-shuai Zhang , Zhong-kai Feng , Xin-yue Fu , Wen-jie Liu , Wen-jing Niu","doi":"10.1016/j.renene.2025.123548","DOIUrl":"10.1016/j.renene.2025.123548","url":null,"abstract":"<div><div>To tackle the challenges posed by low prediction accuracy and the elusive internal mechanisms of traditional models in daily hydropower generation prediction, this paper introduces a hybrid artificial intelligence method. Initially, the MIC method is employed to ascertain the optimal number of input data. Secondly, the CNN model is leveraged to extract potential features from the input data. Subsequently, the ResLSTM model is used to capture the dependencies between the processed data and make predictions. Cascade hydropower reservoirs experimental results across multiple forecast periods demonstrate that the MIC-CNN-ResLSTM method surpasses comparison models in terms of stability and robustness. Furthermore, this paper introduces SHAP theory to elucidate the impact of input data on the daily hydropower generation predictions. Results indicate that historical hydropower generation and reservoir inflow have a significant influence on the prediction outcomes. In conclusion, this paper presents an effective and interpretable daily hydropower generation prediction method, providing valuable insights for power system dispatch operations and the rational development and utilization of water resources.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123548"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124912","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

Wake characteristics of wind turbine in anisotropic terrain based on field experiment combined with LES 基于实测结合LES的各向异性地形下风力机尾迹特性研究

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123532

Zongyuan Xu , Xiaoxia Gao , Yuting Zhu , Xiaoyu Gong , Zhonghe Han , Xiaoxun Zhu , Yu Wang , Wensheng Zhao

{"title":"Wake characteristics of wind turbine in anisotropic terrain based on field experiment combined with LES","authors":"Zongyuan Xu , Xiaoxia Gao , Yuting Zhu , Xiaoyu Gong , Zhonghe Han , Xiaoxun Zhu , Yu Wang , Wensheng Zhao","doi":"10.1016/j.renene.2025.123532","DOIUrl":"10.1016/j.renene.2025.123532","url":null,"abstract":"<div><div>Due to the complexity of the terrain-wake coupling effect, accurate evaluation of wake characteristics is critical for power production and the safety of complex terrain wind farms. This study delves into the wake characteristics (wake velocity field, wake deficit, and wake expansion) in different terrain conditions combined LiDAR-based field experiment with large eddy simulation (LES). LES was conducted to investigate the influence of pressure gradient and turbulence intensity on the wake development and decouple the terrain effect on the turbine wake. Several commonly used models for wake centerline and wake expansion are evaluated by the field measured data. Theoretical analysis for the results of multi-methodology indicates that the unfavorable pressure gradient has a great influence on the wake structure and wake velocity deficit in leeward slope cases. In addition to the impact of atmospheric coherent turbulence, the terrain inducement effect makes the wake meandering characteristics more remarkable. Turbulent kinetic energy analysis reveals that stronger turbulence intensity in the upper wake layer exacerbates the vertical asymmetry of wake velocity. This study provides better guidance for control strategies and power enhancement of wind turbines in complex terrain.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123532"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154789","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

Innovative recycling of end-of-life photovoltaic panels with the aim of polymer degradation and valuable chemical production 以聚合物降解和有价值的化学产品为目标，创新回收废旧光伏板

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123535

Hamza Mumtaz , Szymon Sobek , Marcin Sajdak , Roksana Muzyka , Sebastian Werle , Marcin Procek

{"title":"Innovative recycling of end-of-life photovoltaic panels with the aim of polymer degradation and valuable chemical production","authors":"Hamza Mumtaz , Szymon Sobek , Marcin Sajdak , Roksana Muzyka , Sebastian Werle , Marcin Procek","doi":"10.1016/j.renene.2025.123535","DOIUrl":"10.1016/j.renene.2025.123535","url":null,"abstract":"<div><div>Recycling end-of-life photovoltaic (PV) panels is challenging, as multiple-layer structure makes separation and material recovery processes complex and resource-intensive. This study embarks on an innovative chemical recycling technique based on the liquefaction of organic fractions of PV panels in an oxidative environment. Thermogravimetric analysis (TGA) of virgin PV waste showed the mass loss in three stages, with residual mass left in the range of 32–40 %. During oxidative liquefaction following a well-constructed experimental (Central Composition and Fractional Factorial) design effects of three different parameters, including temperature ranging from 200 to 300 °C, hydrogen peroxide serving as an oxidant (30–60 % overall volume of liquid), and the waste-to-liquid ratio of 12.5–37.5 %, were studied. Total polymer degradation (TPD) was calculated in the range of 20–100 %. The liquid fraction obtained after the process was analyzed through gas chromatography with flame ionization detection (GC-FID), to quantify the yield of oxygenated chemical compounds (OCCs). Fourier transform infrared spectroscopy (FTIR) analysis identified various structural modifications and the degradation of polymeric components. An inverse analysis of the process heating behavior was performed to identify the temperature span over which degradation of polymers occurs and specify the nature of the reaction (exothermic or endothermic). An analysis of variance ANOVA was performed to identify the optimal values of parameters supporting maximum TPD and OCCs yield against the minimum energy consumption, a meaningful input for a potential scale-up of the PV panel recycling technique.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123535"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154655","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

Reducing RES droughts through the integration of wind and solar PV 通过整合风能和太阳能光伏减少可再生能源干旱

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123392

Boris Morin , Aina Maimó Far , Damian Flynn , Conor Sweeney

{"title":"Reducing RES droughts through the integration of wind and solar PV","authors":"Boris Morin , Aina Maimó Far , Damian Flynn , Conor Sweeney","doi":"10.1016/j.renene.2025.123392","DOIUrl":"10.1016/j.renene.2025.123392","url":null,"abstract":"<div><div>Increasing the share of electricity produced from renewable energy sources (RES), combined with RES dependence on weather, poses a critical challenge for energy systems. This study investigates the importance of the balance between wind and solar photovoltaic (PV) capacity on periods of low renewable generation, known as RES droughts. Three different RES datasets are used to estimate the capacity factors for different scenarios of installed capacities for wind and solar PV power. The skill of the RES datasets is quantified by comparing capacity factor time series to observed hourly data and by assessing their representation of observed RES droughts. The RES datasets are used to generate a 45-year hourly time series of RES capacity factor, enabling analysis of the frequency, duration and return periods of RES droughts at a climatological scale. Results show the importance of using an accurate, validated RES dataset for RES drought risk assessment. The addition of solar PV capacity to a wind-dominated system results in a significant reduction in the frequency and duration of RES droughts, while also reducing extremes and seasonal RES drought patterns. These findings underscore the importance of diversification in RES capacity to enhance energy security and resilience.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123392"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138965","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

Continuous phase modulation of molybdenum carbide nanomaterials toward enhanced Li+ storage performances 碳化钼纳米材料的连续相位调制以增强Li+存储性能

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123556

Zheng-Hua He , Jian-Fei Gao , Yan-Dong Ma , Jing-Feng Hou , Ling-Bin Kong

{"title":"Continuous phase modulation of molybdenum carbide nanomaterials toward enhanced Li+ storage performances","authors":"Zheng-Hua He , Jian-Fei Gao , Yan-Dong Ma , Jing-Feng Hou , Ling-Bin Kong","doi":"10.1016/j.renene.2025.123556","DOIUrl":"10.1016/j.renene.2025.123556","url":null,"abstract":"<div><div>In the pursuit of sustainable energy solutions, lithium-ion capacitors are gaining attention for their balanced energy and power density. Transition metal carbides are emerging as promising candidates due to their unique physical and chemical properties. Traditional synthesis methods often involve high-temperature carbon reduction or the application of reducing agents, leading to uncontrollable reactions and the generation of large particle sizes in the resultant materials. To address these challenges, this study employs an organic-inorganic hybrid carbonization, where MoO<sub>3</sub> and C<sub>2</sub>H<sub>4</sub>N<sub>4</sub> are uniformly mixed and then subjected to high-temperature carbonization in Ar. By adjusting carbonization temperature, time, and the amount of C<sub>2</sub>H<sub>4</sub>N<sub>4</sub> added, different phase Mo-based carbides (Mo<sub>2</sub>C/C, MoC/C) are synthesized. Lithium-ion half-cell tests indicate that both materials have similar specific capacities and rate capabilities. Ex-situ XRD characterization show no phase change in Mo<sub>2</sub>C/C or MoC/C during Li<sup>+</sup> insertion/extraction processes. Mo<sub>2</sub>C/C//AC and MoC/C//AC devices were constructed, which provided energy densities of 36.33 and 51.54 W h kg<sup>−1</sup> at power density of 150 W kg<sup>−1</sup>, and 10.67 and 13.67 W h kg<sup>−1</sup> at power density of 2.4 kW kg<sup>−1</sup>, respectively. This successful synthesis of diverse Mo-based carbides provides new material options for enhancing LICs performance, contributing to the development of efficient energy storage systems.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123556"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144154716","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

Ecological environmental impact assessment of photovoltaic and "photovoltaic +" development in China 中国光伏生态环境影响评价与“光伏+”发展

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123509

Hao Zhang , Yan Song , Ming Zhang , Ye Duan , Danning Zhao

{"title":"Ecological environmental impact assessment of photovoltaic and \"photovoltaic +\" development in China","authors":"Hao Zhang , Yan Song , Ming Zhang , Ye Duan , Danning Zhao","doi":"10.1016/j.renene.2025.123509","DOIUrl":"10.1016/j.renene.2025.123509","url":null,"abstract":"<div><div>Photovoltaic (PV) projects are considered to be an effective way to achieve carbon emission reductions, however, the ecological and environmental benefits of PV projects may be overestimated. This paper employs PV development projects in China as a policy shock to assess the impacts of PV development projects on the quality of the ecosystem. It was found that the implementation of PV development projects will significantly reduce the local ecological quality by about 2.3 %. The instrumental variables result show that each standard deviation increase in the installed size of PV plants (about 11,976 kW) will lead to a decrease in ecological quality of about 1.51 %, and after a series of endogeneity and robustness tests, the above findings still hold true. PV development projects negatively affect the quality of the ecosystem by increasing the number of polluting enterprises, increasing investment in fixed assets and destroying farmland and grassland. The study also found that the development of \"PV+\" in the agricultural and pastoral intertwined grassland areas and other dense forest and grassland areas on the ecological and environmental impacts should not be ignored. The new models of \"PV + Mine Restoration\" and \"PV + Sand Control\" are effective paths for local ecological environment restoration.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123509"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138970","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

Numerical investigation on reducing wind load by enclosing solar dish concentrator with membrane structure 膜结构封闭太阳能板聚光器降低风荷载的数值研究

IF 9 1区工程技术

Renewable Energy Pub Date : 2025-05-23 DOI: 10.1016/j.renene.2025.123561

Jian Yan , Cheng Wang , XinYi Xie , Rui Yang , YongXiang Liu

{"title":"Numerical investigation on reducing wind load by enclosing solar dish concentrator with membrane structure","authors":"Jian Yan , Cheng Wang , XinYi Xie , Rui Yang , YongXiang Liu","doi":"10.1016/j.renene.2025.123561","DOIUrl":"10.1016/j.renene.2025.123561","url":null,"abstract":"<div><div>The exposed steel skeleton on the back of the traditional dish concentrator (TDC) results in poor aerodynamic shape, and the superposition of wind pressure on both the front and back surfaces of each mirror unit can significantly deteriorate optical accuracy or cause damage. This paper proposes using membrane structure to enclose the steel skeleton forming a membrane-enclosed dish concentrator (MDC) with a new streamlined aerodynamic shape to reduce the wind loads. Only the mirror's working surface (concave side) to withstand the wind pressure, while the mirror backside within the membrane enclosed area without wind pressure. The wind load (including aerodynamic six-component and wind pressure load) and flow-around characteristics of MDC (a 17.7 m diameter dish concentrator) are investigated by CFD numerical simulation, 35 sets of wind conditions with the combination of wind direction angle <em>θ</em> = 0°–180° (wind speed of 17.1 m/s) and concentrator elevation angle <em>β</em> = 0°–90° are considered, and compared these results with those of TDC. The results indicate that the MDC demonstrates excellent load reduction effects in most conditions, especially when the concentrator's back (convex side) faces the wind. The load reduction effect is most pronounced for drag load, with the drag coefficient is reduced by up to 0.50, and the average reduction rate of the drag load is up to 22.53 % at <em>β</em> = 0°. The average reduction rates for horizontal total load and total wind load at <em>β</em> = 0° can be up to 18.14 % and 17.91 %, corresponding to the reductions of 7990 N and 7891 N. The wind pressure on each mirror in MDC is significantly reduced, with the PWS coefficients ranging only from −0.5 to 1.1 for all conditions. At <em>β</em> = 0° and <em>β</em> = 45°, the PWS coefficient can be reduced on average of 0.570 and 0.412, equivalent to reduction wind pressure by 102.25 Pa and 74.16 Pa, providing an excellent comprehensive load reduction effects.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"252 ","pages":"Article 123561"},"PeriodicalIF":9.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144138971","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