Sustainable Energy Technologies and Assessments最新文献

{"title":"A virtual resistance-based pre-synchronization control for grid-forming converters with seamless transfer capability","authors":"Xiaojun Zhao ,&nbsp;Yedong Zhang ,&nbsp;Haodong Dang ,&nbsp;Xiaohuan Wang ,&nbsp;Chunjiang Zhang","doi":"10.1016/j.seta.2025.104315","DOIUrl":"10.1016/j.seta.2025.104315","url":null,"abstract":"<div><div>Grid-forming converters (GFMCs) are expected to achieve the seamless transfer between islanded and grid-connected modes. However, the conventional virtual impedance-based pre-synchronization control (VI-PSC) will inevitably introduce a virtual impedance angle, leading to two issues: 1) This angle complicates virtual power estimations; 2) This angle may induce pre-synchronization failure during the transition from islanded mode to grid-connected mode. In this paper, a virtual resistance-based PSC (VR-PSC) is proposed to eliminate the adverse effects exerted by the virtual impedance angle for GFMCs, thereby enabling the reliable and seamless transfer. A comparison between VI-PSC and VR-PSC is conducted from two aspects of virtual power estimations and mapping relations between control targets and results, and then the pre-synchronization failure mechanism caused by virtual impedance angle is elucidated. Subsequently, a single-zero double-pole (SZDP) controller is developed, incorporating a phase margin constraint into its parameter design to avoid the low-pass filter (LPF)-related performance degradation. In this way, even if the LPF is ignored, the developed SZDP can still enhance the dynamic performance of pre-synchronization without compromising the stability of control loop. Finally, the proposed VR-PSC is applied to single and parallel GFMCs respectively, and the performance of VR-PSC is tested by using a hardware-in-the-loop experimental platform.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"77 ","pages":"Article 104315"},"PeriodicalIF":7.1,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143833197","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":"Integrated modeling and quantitative analysis of N2O emission before and after COVID-19: A case in Guangdong Province","authors":"Tianyu Lu ,&nbsp;Dakang Wang ,&nbsp;Xiankun Yang ,&nbsp;Zhen Li ,&nbsp;Hui Xia ,&nbsp;Zhaolong Song ,&nbsp;Yingpin Yang ,&nbsp;Yongru Mo ,&nbsp;Jinnian Wang","doi":"10.1016/j.seta.2025.104313","DOIUrl":"10.1016/j.seta.2025.104313","url":null,"abstract":"<div><div>N₂O is one of the most prominent greenhouse gases, and the increase in N₂O emissions not only triggers global warming, but also leads to excessive atmospheric NO_x levels and various air pollution. Research on the relationship between N₂O emissions and resource utilization is scarce worldwide. We constructed an N₂O emission accounting model for energy utilization based on emission sources and data availability in Guangdong Province, and explored the policies applicable to the sectoral emission reduction. We found that the pandemic-induced reduction in industrial and transportation activities resulted in a significant reduction of N₂O emissions, waste combustion brought about by urban economic development is an important source of emission growth, energy utilization is the largest contributor to N₂O emissions from 2019 to 2021, which has significantly dropped due to the reduction of labor force caused by social panic and the strict implementation of containment policies by the community. Our model highlighted a negative correlation between confirmed COVID-19 cases in 2020 and power generation deviation rates, emphasizing that the reduction of labor force caused by COVID-19 is a momentous factor for the decrease of power generation, which may be a prominence incentive for the fall of N₂O emissions from fixed source combustion.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"77 ","pages":"Article 104313"},"PeriodicalIF":7.1,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823991","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":"Enhancing floating offshore wind turbine systems through multi-scale coupled modeling","authors":"Solomon Evro,&nbsp;Jacquelyn Veith,&nbsp;Akinmoladun Akinwale,&nbsp;Olusegun S. Tomomewo","doi":"10.1016/j.seta.2025.104299","DOIUrl":"10.1016/j.seta.2025.104299","url":null,"abstract":"<div><div>Floating offshore wind turbines (FOWTs) harness consistent deep-sea wind resources to provide reliable renewable energy. This study examines Multi-Scale Coupled Modeling (MSCM) as a framework for improving FOWT design, efficiency, and reliability. MSCM integrates aerodynamic, hydrodynamic, and structural interactions across multiple scales, enhancing predictive accuracy while optimizing turbine stability and energy capture. Advanced computational techniques, including machine learning (ML) and reduced-order models (ROMs), enable real-time adaptability and efficient large-scale simulations. The study highlights key advancements in MSCM, such as nonlinear hydrodynamic modeling, integrated control strategies, and mooring system optimization. Findings indicate that incorporating high-fidelity computational fluid dynamics (CFD), finite element modeling (FEM), and probabilistic modeling enhances the robustness of FOWT simulations under extreme marine conditions. Furthermore, the integration of ML-based adaptive control improves turbine response to environmental variability, reducing fatigue loads and operational uncertainties. Experimental validation remains critical for refining MSCM frameworks, requiring collaboration between academia, industry, and research institutions to ensure real-world applicability. Additionally, the development of hybrid AI-physics models and digital twin frameworks presents new opportunities for predictive maintenance and real-time performance optimization. By advancing MSCM techniques, this study contributes to the scalability and economic viability of FOWTs, supporting the transition to sustainable offshore wind energy. The findings underscore the necessity of interdisciplinary collaboration and high-performance computing (HPC) solutions to address computational challenges while ensuring the long-term feasibility of floating wind technology. These insights provide a pathway for enhancing FOWT deployment and optimizing renewable energy generation in offshore environments.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"77 ","pages":"Article 104299"},"PeriodicalIF":7.1,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823994","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":"Cost reduction analysis for sustainable ethylene production technologies","authors":"Daniela Anahi Toribio-Ramirez ,&nbsp;Remko J. Detz ,&nbsp;André Faaij ,&nbsp;Bob van der Zwaan","doi":"10.1016/j.seta.2025.104306","DOIUrl":"10.1016/j.seta.2025.104306","url":null,"abstract":"<div><div>Production of ethylene, one of the main petrochemicals, remains heavily dependent on fossil fuels, both as energy source and as feedstock. Several strategies and options are being considered to decarbonize and defossilize ethylene production. So far, no studies exist that provide quantitative insights into how to accelerate the development and deployment of new ethylene technologies. The aim of this work is to determine under which technological learning and market deployment conditions renewable ethylene production technologies can become cost competitive by 2050. To meet this goal, six new ethylene production technologies are analyzed: electric cracking, ethanol dehydration, oxidative coupling of methane (OCM), dimethyl-ether-to-olefins (DMETO), methanol-to-olefins (MTO), and CO₂ electrolysis. We find that renewable ethylene is 3–9 times more expensive than the current average market price of ethylene. A three-level framework (with technology, process, and system as dimensions) to analyze cost reductions is applied and nine different cost projections for 2050 based on different learning rates and deployment scenarios are shown. Feedstock prices as low as 230€/t are required, to achieve the most optimistic projected cost of ethylene produced via electric cracking of synthetic naphtha (480€/t). Ethylene produced from synthetic MTO could cost 1030€/t by 2050, contingent on a price of synthetic methanol of around 450-475€/t. Achieving a projected ethylene cost from OCM of 529€/t remains challenging, even with low synthetic natural gas prices and state-of-the art technology. Ethylene from CO₂ electrolysis has a projected cost of 1660€/t in 2050. Even with low electricity prices (5€/MWh) and state-of-the-art technology, this projection remains practically unattainable. Ethylene production from synthetic DMETO or synthetic ethanol dehydration does not achieve cost competitiveness in 2050, as the costs reach 1250€/t and 1100€/t, respectively.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"77 ","pages":"Article 104306"},"PeriodicalIF":7.1,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823993","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":"Input-Output energy analysis and financial feasibility of cherry tomato production in PT X greenhouse at Pangalengan, West Java, Indonesia","authors":"Nadia Fitriani,&nbsp;Drupadi Ciptaningtyas,&nbsp;Ahmad Thoriq,&nbsp;Lukito Hasta Pratopo","doi":"10.1016/j.seta.2025.104311","DOIUrl":"10.1016/j.seta.2025.104311","url":null,"abstract":"<div><div>This study examines the energy efficiency and financial feasibility of cherry tomato cultivation in a Venlo greenhouse in West Java, Indonesia. The agricultural company operating this greenhouse faces challenges arising from improper design and technology selection, including elevated internal temperatures unsuitable for optimal plant growth. A fan-pad cooling system mitigates this issue but results in high energy consumption, with electricity accounting for 90.26 % of total energy use. The input–output energy ratio (5 %) and energy productivity (0.06 kg/MJ) indicate significant inefficiencies in resource utilization. Financial analyses reveal negative Net Present Value (NPV) and a Benefit-Cost (B/C) ratio below 1, reflecting a lack of profitability. The Payback Period (PBP) of 8.7 years highlights long-term financial risks. The findings emphasize the need for investment optimization and strategic cost management to ensure the sustainability of greenhouse-based cherry tomato production in tropical climates.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"77 ","pages":"Article 104311"},"PeriodicalIF":7.1,"publicationDate":"2025-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143823990","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":"Wave energy systems in the Vietnamese context: Proposal for onshore and offshore integration based on a techno-economic analysis","authors":"Domenico Curto ,&nbsp;Doan Van Binh ,&nbsp;Luong Ngoc Giap ,&nbsp;Le Thi Thuy Hang ,&nbsp;Francesco Montana ,&nbsp;Nguyễn Quang Ninh ,&nbsp;Eleonora Riva Sanseverino ,&nbsp;Giuseppe Sciume’","doi":"10.1016/j.seta.2025.104268","DOIUrl":"10.1016/j.seta.2025.104268","url":null,"abstract":"<div><div>Renewable energy introduction is one of the main goals for the evolution of the power system in the 21st century. The most popular technologies are based on photovoltaic panels or wind turbines, but other energy sources such as sea waves energy should be also exploited. Moreover, although a great effort has already been spent in developed countries, pushing the investments through economic subsidies, many developing countries are lagging, still basing most of their power generation-mix on fossil fuels. In this study, two prototypes for sea wave energy exploitation are illustrated, one for onshore and one for offshore application. To demonstrate their feasibility, a techno-economic analysis for their introduction in Vietnam is provided, comparing their performance with more mature technologies such as wind and solar. Results show that, with adequate economic conditions, this technology might be a good support to the decarbonization of the energy system. Regarding the renewables policy, Vietnamese government should support these renewable energies with a higher feed-in tariff to make the investments profitable. Nevertheless, with reference to the offshore technology, a renewable mix based on this energy converter was proved to be economically viable, with LCOE between 6.45 and 6.56 cUSD/kWh and NPV between 4,500 and 51,700 kUSD over 20 years.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"77 ","pages":"Article 104268"},"PeriodicalIF":7.1,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143816971","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":"Multi-objective optimisation of electrolysis across diverse supply configurations in hydrogen–electricity coupled energy networks – A UK perspective","authors":"Hilal Ozdemir ,&nbsp;Ioana Pisica","doi":"10.1016/j.seta.2025.104282","DOIUrl":"10.1016/j.seta.2025.104282","url":null,"abstract":"<div><div>The adaptability of hydrogen across sectors such as transportation, heavy industry, and its support for intermittent renewable generation through flexible storage has sparked growing interest in electrolysis-based hydrogen production. While large-scale electrolyser integration enhances network stability by aiding constraint management and reducing renewable curtailment through storage, it also places considerable demand on electricity networks. This makes understanding the role of electrolyser deployment on distribution networks (DNs) increasingly crucial. While existing studies on hydrogen-integrated DNs often target specific operational costs or isolated constraints, they typically lack a comprehensive view that considers broader economic, operational, and environmental impacts. This study offers an extensive analysis across these dimensions, exploring diverse hydrogen supply configurations, including hydrogen pipeline and storage unit availability, within a real UK DN to provide a practical perspective. This study introduces a conflicting multi-objective function that improves load factor (LF) by 85.516% and reduces power loss by 22.947%, all while managing operational costs effectively. Findings underline that deploying electrolysers with efficient management algorithms can significantly enhance the operations of DNs. Additionally, this paper contributes to the field by detailing recent UK-based electrolysis projects, providing insights into the future of hydrogen–electricity coupled multi-energy networks.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104282"},"PeriodicalIF":7.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737894","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":"Empowering the steel industry with solar: Sustainable energy for a greener future","authors":"F. Dusuki ,&nbsp;R. Zailan ,&nbsp;F.Z. Mansor ,&nbsp;K. Jamaluddin","doi":"10.1016/j.seta.2025.104298","DOIUrl":"10.1016/j.seta.2025.104298","url":null,"abstract":"<div><div>Steel manufacturing is an energy-intensive industry that grappling with rising electricity costs and substantial carbon emissions. While renewable energy is gaining attention, the integration of large-scale industrial solar photovoltaic (PV) systems remains challenging due to space constraints, fluctuating energy demands, and financial limitations. Most existing research focuses on small-scale commercial and residential solar installations. It leaves a gap in large-scale industrial systems, which require customized stringing, adaptive inverter sizing, and optimized DC/AC ratios. This research explores how to design an optimized large-scale rooftop PV system for steel manufacturing to maximize performance and profitability. The methodology involves designing and simulating a 2.8 MWp rooftop solar PV system using PVsyst software. Following this, technology selection, technical performance, economic, environmental, and sensitivity analyses were conducted. The performance ratio analysis identified a 1.43 DC/AC ratio as optimal, achieving a PR of 81.67 %. A comparative analysis between self-consumption (SELCO) and Net Offset Virtual Aggregation (NOVA) demonstrated that SELCO is the superior option, yielding RM 7.87 million in annual savings with a 9.5-month payback period. Electricity consumption of 312,417.25 kWh/month contributes to a greenhouse gas emission reduction of approximately 236.81 tons CO₂-eq. The sensitivity analysis revealed that as DC voltage drop increased from 2.70 % to 3.30 %, energy output declined, leading to a simultaneous rise in DC losses from 0.78 % to 1.14 %.These findings highlighted large-scale solar PV as a viable decarbonization strategy. Additionally, the design integrates technical performance, financial, and environmental factors into a holistic framework to facilitate solar PV adoption in heavy industries.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104298"},"PeriodicalIF":7.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768110","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":"The importance of conductive materials characterization and synthesis conditions in understanding DIET through biomethane production: A review","authors":"Mohamed A. Hassaan ,&nbsp;Marwa R. Elkatory ,&nbsp;Ahmad B. Albadarin ,&nbsp;Chirangano Mangwandi ,&nbsp;Mohamed A. El-Nemr ,&nbsp;Safaa Ragab ,&nbsp;Mengjie Pu ,&nbsp;Chao Zhang ,&nbsp;Mingzhi Huang ,&nbsp;Ahmed El Nemr","doi":"10.1016/j.seta.2025.104308","DOIUrl":"10.1016/j.seta.2025.104308","url":null,"abstract":"<div><div>Anaerobic digestion (AD) is a natural biological process by which organic materials can be broken down to produce biogas economically. The main components of biogas are CH₄, CO₂, and H₂S, with CH₄ being the most important. Several studies have discovered new materials to advance CH₄ production through the reduction of CO₂ and enhanced electron transfer through direct interspecies electron transfer (DIET). The current review will highlight the limited use of characterization techniques such as XPS, CHNS, and BET in the published biogas and biomethane articles in choosing suitable materials, either in biomass or biochar, based on their synthesis conditions, structure, pore size, and conductivity. Moreover, it will also include a discussion about the control of pyrdinic-N, pyrroldinic-N, and graphitic-N based on their conductivity and relation to DIET. The factors that may enhance DIET and increase methanogenesis in biochar or nanoparticles will also be discussed. The possible adverse effects of some nanoparticles and their relation to reactive oxygen species (ROS) formation, which may decrease biogas production, will also be discussed. Finally, the optimization strategy that should be adapted and employed in future biogas studies will be outlined.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":""},"PeriodicalIF":7.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815260","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":"FTO ligulate petals interconnected 3D- porous iron surface for enhanced interfacial interactions with exoelectrogenic bacteria","authors":"Babu Indira Bijimol ,&nbsp;Chanassery Vinayababu Geethanjali ,&nbsp;Sheik Muhammadhu Aboobakar Shibli","doi":"10.1016/j.seta.2025.104284","DOIUrl":"10.1016/j.seta.2025.104284","url":null,"abstract":"<div><div>Microbial fuel cells (MFCs) are a promising sustainable energy technology, with the bio-active anode playing a crucial role in their performance. The present study demonstrates a bio-active iron-based electrode that enhances bacterial adhesion and electron conductivity. The bacterial survivability on the electrode can enhanced by decorating its active porous framework with Fe₂TiO₅ (FTO) composite. These particles not only facilitate bacterial activity for electron transfer processes but also enhances the anode cell potential in the assembled double-chambered MFC. A superior specific surface area of 289.06 m²/g, satisfactory average surface roughness of 2.506 µm, and reduced charge transfer resistance of 12.89 × 10⁰ Ω cm² compared to 18.68 × 10⁰ Ω cm² for the Fe/0.2FTO and Fe electrodes were achieved. MFCs equipped with the Fe/0.2FTO anode yield a maximum power density of 1710.39 mW/m² at a current density of 2.13 mA/m², which is superior to that of Fe anodes. Anode biofilm morphology and surface texture demonstrated that the anode provides sufficient sites and mass transport pathways for exoelectrogenic bacterial species, promoting improved bacterial activity in mature biofilms. Thus, the FTO decorated porous 3D-framework anode with tunable surface properties, acts as a promising platform for sustained bacterial activity and stable operation of MFCs.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"76 ","pages":"Article 104284"},"PeriodicalIF":7.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143737897","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}