Sustainable Energy Technologies and Assessments最新文献

{"title":"Effect of blade and tower interference on wind turbine tower vibration occurred before grid connection","authors":"Zhenzhou Zhao ,&nbsp;Yan Liu ,&nbsp;Dingding Wang ,&nbsp;Kashif Ali ,&nbsp;Yige Liu ,&nbsp;Huiwen Liu ,&nbsp;Shangshang Wei ,&nbsp;Wenfeng Li","doi":"10.1016/j.seta.2025.104290","DOIUrl":"10.1016/j.seta.2025.104290","url":null,"abstract":"<div><div>The towers of large-scale wind turbines often experience low-frequency oscillations in the months before grid connections, threatening the turbines safety. The NREL offshore 5 MW wind turbine is investigated using computational fluid dynamics, to investigate oscillation mechanisms involving blade-tower interference. The multibody dynamics method is used to study the vibration response induced by two vortices. The results reveal that the interaction of tower and blade trailing vortices forms a larger vortex street, increasing the size and deviation of the tower’s trailing vortex. The merging of wake vortices reduces the shedding frequency, intensifies the dynamic response of the overall structure, and results in a 6-fold pressure increase exerted on the tower surface, consequently the vortex-induced resonance effects are strengthened. The lift force induced by the blade and tower trailing vortice is substantially increased and larger than that conventionally induced by a single tower’s trailing vortex. At a wind speed of 6 m/s, the maximum lift coefficient amplitude is increased by six-fold. Two-vortices interference makes vibration particularly severe at yaw angles from 40° to 50°. At 50° yaw angle, the torque at tower bottom is seven times larger than that in the nonyaw case, with lateral displacement reaching 0.97 m and forward–backward displacement reaching 0.60 m.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104290"},"PeriodicalIF":7.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143715060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Grid decarbonization and closed-loop recycling reduce environmental burden in China’s electric vehicle industry","authors":"Shuoshuo Tian ,&nbsp;Qi Zhang ,&nbsp;Jialin Shen","doi":"10.1016/j.seta.2025.104281","DOIUrl":"10.1016/j.seta.2025.104281","url":null,"abstract":"<div><div>The transition towards lightweight materials in China’s booming electric vehicle (EV) industry has raised concerns about increasing energy consumption and environmental impact from materials manufacturing. This study proposes closed-loop recycling and power grid decarbonization as two key strategies to mitigate the environmental burden of the expanding EV material demand. The findings indicate that by 2060, closed-loop recycling could meet 68.70 % of steel and 78.95 % of aluminum requirements with only 20.33 % of 2060′s total energy consumption and generating 21.63 % of 2060′s total carbon emissions. Furthermore, 1144.90 GJ of energy consumption and 77.39 Mt carbon emissions could be avoided by the combination effect of recycling and power decarbonization. These findings highlight the importance of developing efficient recycling infrastructure and integrating renewable electricity to achieve a sustainable EV industry in China, providing valuable insights for policymakers and industry stakeholders to inform strategies for transitioning towards a low-carbon, circular EV ecosystem.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104281"},"PeriodicalIF":7.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Day-ahead versus intra-day scheduling of microgrids dominated by charging and swapping stations: A Stackelberg game and adaptive rolling forecast optimisation based approach","authors":"Gang Zhang,&nbsp;Xiong Feng,&nbsp;Tuo Xie,&nbsp;Kaoshe Zhang","doi":"10.1016/j.seta.2025.104267","DOIUrl":"10.1016/j.seta.2025.104267","url":null,"abstract":"<div><div>With the rapid development of electric vehicles(EVs), battery charging and swapping stations(BCSSs) have become the carriers of interaction between EVs and smart microgrids(MGs). However, how to effectively utilize the flexibility of BCSSs to meet the charging and battery swapping needs of EVs and manage the balance of energy supply and demand in MGs has not yet been resolved. To this end, this paper proposes a day-ahead bidding and intraday scheduling strategy between charging and swapping station operators(BCSSOs) and microgrid operators (MGOs). Firstly, an evaluation model of the adjustable potential of BCSSs considering the willingness of EV users is established; on this basis, a Stackelberg game model is constructed to realize the day-ahead scheduling of MGO and BCSSO; Secondly, in the intraday stage, the uncertainty of renewable energy output and EV users is solved through an adaptive rolling prediction scheduling model. The example shows that the day-ahead bidding strategy proposed in this paper increases the revenue of MGO by 1.28%, reduces the energy cost of BCSSO by 3.80%, and reduces carbon emissions by 5.78%. Compared with the conventional intraday scheduling method, the adaptive rolling forecast scheduling in this paper can accurately eliminate the deviation caused by uncertainty.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104267"},"PeriodicalIF":7.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive process modelling, techno-economic and life cycle assessment of a power to ammonia process","authors":"Gabriela A. Cuevas-Castillo ,&nbsp;Stavros Michailos ,&nbsp;Kevin Hughes ,&nbsp;Derek Ingham ,&nbsp;Mohamed Pourkashanian","doi":"10.1016/j.seta.2025.104278","DOIUrl":"10.1016/j.seta.2025.104278","url":null,"abstract":"<div><div>Ammonia is currently produced through H₂ derived from fossil sources and hereby alternative low carbon ammonia routes are essential for mitigating emissions. The present study for the first time investigates the feasibility of the whole supply chain of a Power-to-Ammonia (PtA) assembly though comprehensive process design and modelling, techno-economic assessment (TEA) and life cycle assessment (LCA). The investigated system includes offshore electricity generation, hydrogen produced through water electrolysis, nitrogen production through cryogenic air separation unit (ASU), and the Haber–Bosch (H-B) ammonia synthesis loop. The Aspen Plus software has been utilised to establish the mass and energy balances of the synthesis while System Model Advisor (SAM) software has been used to model the offshore wind farm. The H₂ conversion efficiency (H₂-conv.), the ammonia energy efficiency (NH₃-efficiency) and the specific energy consumption (SEC) have been considered as technical key indicators. Typical economic indicators such as Capital and Operating expenditures (CAPEX/OPEX) and minimum selling price (MSP) of ammonia have been calculated while the CML 2001 environmental impact assessment method has been applied for the whole assembly. Moreover, a sensitivity analysis is carried out to assess the influence of the main parameters on both TEA/LCA. The results showed an <em>H₂-conv</em> and <em>NH₃-efficiency</em> of 96 % and 49 %, respectively. Energy integration resulted in a power generation of 14.3 MW. The economic analysis revealed a levelized cost of ammonia (LCOA) of £687/tonne NH₃ which is higher than the fossil based-ammonia price of £245/tonne. However, the economic sensitivity analysis shows that a 50 % reduction in the levelized cost of electricity (i.e., £33MWh) could decrease the LCOA to £361/tonne of ammonia while to break even with the fossil ammonia price an LCOE of £21/MWh is required. Based on the LCA, the global warming potential (GWP) of the PtA is reduced by approximately 94 % compared to the conventional fossil-based ammonia (152 vs 2445 kg CO_2e/tonne NH₃). Further reduction on GWP can be achieved by replacing offshore wind with nuclear power supply.</div><div>Overall, the investigated PtA assembly offer great environmental gains, but monetary support and/or technical improvements are required to improve its market competitiveness. The study presented new data on a novel low carbon ammonia process and the information generated can set the foundation for detailed engineering designs and inform policy making.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104278"},"PeriodicalIF":7.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686263","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research progress on the enhancement of heat transfer performance of ground heat exchangers: A review","authors":"Ye Wang ,&nbsp;Luyu Zhang ,&nbsp;Qiqiang Zhang ,&nbsp;Hengjian Liu ,&nbsp;Zhi Lu ,&nbsp;Zixin Heng","doi":"10.1016/j.seta.2025.104283","DOIUrl":"10.1016/j.seta.2025.104283","url":null,"abstract":"<div><div>Ground heat exchangers (GHEs) play a crucial role in enhancing the efficiency of ground source heat pump systems (GSHP), and there has been extensive research on geothermal energy utilization. This paper reviews prior studies focused on enhancing the heat transfer efficiency of GHEs. It provides a comprehensive summary of methods for performance improvement, including structural improvements of GHEs, selection of backfill materials, consideration of different geological conditions, choice of working fluids, pipe arrangement patterns, heat supplementation devices, and operational modes. The analysis indicates that future research should focus on finding more suitable backfill materials and working fluids, achieving multi-energy complementation between geothermal energy and various renewable energy sources or industrial waste heat. Additionally, attention should be given to the rational arrangement of ground heat exchanger pipe groups and passive heat transfer enhancement components. Furthermore, research methods should integrate numerical models with mathematical analyses to ensure efficient and accurate guidance for engineering applications.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104283"},"PeriodicalIF":7.1,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143686264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating PCM heat battery as a range-saving solution for electric vehicle cabin heating","authors":"Emre Mandev,&nbsp;Mehmet Akif Ceviz,&nbsp;Faraz Afshari,&nbsp;Burak Muratçobanoğlu","doi":"10.1016/j.seta.2025.104270","DOIUrl":"10.1016/j.seta.2025.104270","url":null,"abstract":"<div><div>In cold climates, traditional cabin heating systems that rely on the electric vehicle’s (EV) battery power consume a significant amount of energy, thus reducing the vehicle’s range. This study examines a phase change material (PCM)-based heat battery system designed to ensure thermal management in vehicle cabins while minimizing range loss. The proposed system stores heat from an external energy source using PCM and transfers it to the cabin during vehicle operation, reducing the need for conventional internal heating systems powered by the EV’s battery. Experiments were conducted on a Citroën Ami vehicle under three different scenarios: no heating, using the internal electric heating system, and employing the PCM heat battery. The results showed that using the internal heating system led to a significant reduction in vehicle range, while the PCM heat battery maintained cabin temperature and prevented additional battery consumption. In mild cold climate conditions, with outside temperatures ranging from −2 °C to 2 °C, the PCM heat battery successfully stabilized the cabin temperature over a 3-hour period. This demonstrates that the PCM heat battery system can support thermal comfort and reduce battery usage, potentially saving up to 33 % of range in cold weather.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104270"},"PeriodicalIF":7.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable liquid hydrogen production: Comprehensive modeling and thermodynamic analysis of a geothermal-powered multifunctional system","authors":"Ali Husnu Bademlioglu ,&nbsp;Ahmet Serhan Canbolat ,&nbsp;Omer Kaynakli","doi":"10.1016/j.seta.2025.104279","DOIUrl":"10.1016/j.seta.2025.104279","url":null,"abstract":"<div><div>In this study, a comprehensive, multifunctional system developed for the production of liquid hydrogen, utilizing geothermal energy, and consisting of an organic Rankine cycle (ORC), high-temperature electrolysis system, absorption refrigeration cycle, and precooled Linde-Hampson liquefaction system as subsystems, was modeled. The thermodynamic performance of the liquid hydrogen production system was investigated using alternative refrigerants (n-Hexane, R123, R245fa, R601) in the ORC at evaporator temperatures ranging from 100 °C to 150 °C. Energy and exergy analyses of the liquid hydrogen production system were performed, and the specific energy consumption (SEC) of the system was evaluated for different working parameters. The best operating conditions of the system were determined by comparing the amount of liquid hydrogen produced. Based on the evaporator temperature and refrigerant used in the ORC, the energy efficiency of the liquid hydrogen production system varied between 7.93 % and 10.53 %, while the exergy efficiency ranged from 24.07 % to 31.94 %. Additionally, it was found that the amount of liquid hydrogen obtained from the modeled system varied between 0.124 kg/s and 0.164 kg/s depending on the operating parameters. The decrease in SEC with increasing evaporator temperature suggested a potential improvement in system performance at higher temperatures. Specifically, as the evaporator temperature increased, the SEC of the system decreased by 22 % for n-Hexane and by 18 % for R245fa. This indicated that n-Hexane might offer greater energy efficiency at elevated temperatures.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104279"},"PeriodicalIF":7.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bio-mimicry in the aerodynamics of small horizontal axis wind turbines","authors":"Amr Khedr","doi":"10.1016/j.seta.2025.104260","DOIUrl":"10.1016/j.seta.2025.104260","url":null,"abstract":"<div><div>Small horizontal-axis wind turbines play a crucial role in revolutionizing distributed energy systems by providing localized renewable power generation, enhancing energy security, reducing reliance on centralized power grids, and promoting sustainability in energy production. However, their efficiency is often constrained by significant aerodynamic challenges. This review examines the latest advancements in bio-inspired aerodynamic techniques and their potential in overcoming these challenges. Biomimetics — an interdisciplinary approach that applies biological principles to engineering problems — offers promising solutions for aerodynamic challenges. By integrating design elements inspired by plants, insects, birds, and marine life, researchers have demonstrated potential improvements in key areas such as drag reduction, lift enhancement, stall delay, and overall aerodynamic efficiency. This paper provides a comprehensive analysis of these biomimetic strategies, with a particular focus on their application to the blade design of small horizontal axis wind turbines. Moreover, by identifying current advancements in parallel with existing research gaps, this review emphasizes the need for further validation and optimization in bio-inspired blade design. The insights presented aim to contribute to the development of more efficient and sustainable small wind turbines, in response to the growing global demand for distributed renewable energy solutions.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104260"},"PeriodicalIF":7.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143643096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of torrefaction on the physiochemical and fuel properties of major Indian waste biomasses","authors":"Kumar Gedela Santhosh,&nbsp;Aggarwal Mohit,&nbsp;G.V.P. Bhagath Singh","doi":"10.1016/j.seta.2025.104277","DOIUrl":"10.1016/j.seta.2025.104277","url":null,"abstract":"<div><div>The increasing importance of biomass-based energy production as a critical component of sustainable energy resources and effective waste management necessitates a comprehensive understanding of the fundamental properties of biomass feedstocks. This review critically evaluates the physicochemical and fuel characteristics of seven widely available biomass sources in India (sugarcane bagasse, sugarcane tops, rice husk, rice straw, maize stalks, maize cobs, and empty palm oil fruit bunches), with a particular focus on the impact of torrefaction. Despite the well-documented benefits of torrefaction in improving biomass properties, limited studies have compared the specific effects of this thermal pretreatment process across diverse biomass sources. This review addresses this gap by critically analyzing the impact of torrefaction on key biomass properties, including hemicellulose, cellulose, lignin, elemental composition (carbon, hydrogen, nitrogen, and sulphur), moisture content, volatile matter, and high heating value, providing a comparative analysis to determine the optimal biomass for energy applications. Moreover, the review critically analyzes the impact of torrefaction on key biomass properties, including hemicellulose, cellulose, lignin, elemental composition (carbon, hydrogen, nitrogen, and sulphur), moisture content, volatile matter, and high heating value. Furthermore, the review synthesizes recent findings to identify optimum torrefaction conditions that enhances the properties of each corresponding biomass. By providing a comprehensive analysis of the complex relationships between biomass characteristics and their practical applications, this review contributes to the advancement of sustainable energy production by optimising biomass-based energy systems and promoting waste-to-energy strategies.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104277"},"PeriodicalIF":7.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143632248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance evaluation of evacuated tube solar collector using Al2O3/water nanofluid: Experiment, modelling, life cycle and cost analysis in the UAE context","authors":"Shek Rahman ,&nbsp;Zafar Said ,&nbsp;Salah Issa ,&nbsp;Mamdouh El Haj Assad ,&nbsp;Prabhakar Sharma ,&nbsp;Ahmed Amine Hachicha","doi":"10.1016/j.seta.2025.104261","DOIUrl":"10.1016/j.seta.2025.104261","url":null,"abstract":"<div><div>This study investigates the performance improvement of an evacuated tube solar collector (ETSC) using Al₂O₃/water nanofluids, focusing on energy, exergy, and economic aspects. The thermophysical properties of Al₂O₃/water nanofluids, including density, specific heat capacity, and thermal conductivity, were experimentally determined, with stability validated through zeta potential analysis. Two volume fractions (0.05% and 0.3%) were tested at flow rates of 1, 2, and 3 LPM under varying solar irradiance. The nanofluids significantly improved thermal performance, with the highest thermal and exergy efficiencies of 68% and 30.76%, respectively, achieved using 0.05% Al₂O₃/water nanofluid at 3 LPM. A comparison is also conducted between the proposed system and previously published literature using TiO₂/H₂O nanofluid. Results suggest that Al₂O₃/H₂O nanofluids demonstrated 5.32% greater thermal efficiency as well as weight and cost reduction of about 85.5% and 69.15%, respectively at a lower volume fraction over TiO₂/H₂O nanofluid. A life cycle analysis, including energy requirement, CO₂ emissions, and 20-year investment, is conducted to assess the system’s environmental and economic feasibility. Life cycle analysis revealed a significant reduction in CO₂ emissions and total costs for the solar-powered system. Furthermore, predictive modeling using CatBoost and AdaBoost achieved high accuracy, with CatBoost emerging as the superior model for generalization and prognostic efficiency. This work underscores the potential of Al₂O₃/water nanofluids for sustainable and cost-effective solar thermal applications.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104261"},"PeriodicalIF":7.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143629014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}