Renewable and Sustainable Energy Reviews最新文献_第5页

Effectiveness of energy harvesting systems subjected to flow-induced vibrations in confined spaces

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-18 DOI: 10.1016/j.rser.2024.115183

H. Shahid , E. Uddin , A. Abdelkefi , U. Latif , M. Shah , M. Awais , M. Zhao

The global demand for sustainable energy sources drives interest in flow energy harvesting for renewable energy generation. Understanding the impact of boundary region size is crucial to create practical and autonomous devices. This study investigates how changing the distance between wall boundaries (y∗) affects the performance of a piezoelectric-based energy harvester that converts aeroelastic motion into electrical energy. The research focuses on the interaction of a piezoelectric flag with fluid flow downstream of inverted C-shaped and circular cylinders placed in a uniform fluid flow. The dynamic behavior of the piezoelectric flag is influenced by the gaps between the cylinders and the flag (D_x), as well as between the cylinders and the walls (D_y), leading to fluctuations in the levels of harvested power. The arrangement of cylinders with specific dimensions (2.0 ≤ D_x ≤ 3.0, D_y = 4.65) consistently demonstrates the highest power output through continuous flag motion. The inverted C-shaped cylinder outperforms the circular cylinder, showing a 19 % increase in power output. Particle Image Velocimetry (PIV) experiments confirm these findings by showing improved wake dynamics alignment and energy efficiency. However, certain gap sizes lead to lower energy production due to boundary effects and inadequate wake flow coupling. This research provides valuable insights into the optimal design configuration for piezoelectric-based energy harvesters in fluid flow environments.

{"title":"Effectiveness of energy harvesting systems subjected to flow-induced vibrations in confined spaces","authors":"H. Shahid , E. Uddin , A. Abdelkefi , U. Latif , M. Shah , M. Awais , M. Zhao","doi":"10.1016/j.rser.2024.115183","DOIUrl":"10.1016/j.rser.2024.115183","url":null,"abstract":"<div><div>The global demand for sustainable energy sources drives interest in flow energy harvesting for renewable energy generation. Understanding the impact of boundary region size is crucial to create practical and autonomous devices. This study investigates how changing the distance between wall boundaries (<em>y∗</em>) affects the performance of a piezoelectric-based energy harvester that converts aeroelastic motion into electrical energy. The research focuses on the interaction of a piezoelectric flag with fluid flow downstream of inverted C-shaped and circular cylinders placed in a uniform fluid flow. The dynamic behavior of the piezoelectric flag is influenced by the gaps between the cylinders and the flag (<em>D</em><sub><em>x</em></sub>), as well as between the cylinders and the walls (<em>D</em><sub><em>y</em></sub>), leading to fluctuations in the levels of harvested power. The arrangement of cylinders with specific dimensions (2.0 ≤ <em>D</em><sub><em>x</em></sub> ≤ 3.0, <em>D</em><sub><em>y</em></sub> = 4.65) consistently demonstrates the highest power output through continuous flag motion. The inverted C-shaped cylinder outperforms the circular cylinder, showing a 19 % increase in power output. Particle Image Velocimetry (PIV) experiments confirm these findings by showing improved wake dynamics alignment and energy efficiency. However, certain gap sizes lead to lower energy production due to boundary effects and inadequate wake flow coupling. This research provides valuable insights into the optimal design configuration for piezoelectric-based energy harvesters in fluid flow environments.</div></div>","PeriodicalId":418,"journal":{"name":"Renewable and Sustainable Energy Reviews","volume":"210 ","pages":"Article 115183"},"PeriodicalIF":16.3,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143171295","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

Essential parts of hydrogen economy: Hydrogen production, storage, transportation and application

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-18 DOI: 10.1016/j.rser.2024.115196

Kashif Naseem , Fei Qin , Faryal Khalid , Guoquan Suo , Taghazal Zahra , Zhanjun Chen , Zeshan Javed

Promoting renewable energy sources and effective storage, conversion, and transportation technologies to address non-renewable energy supply and environmental issues is a need of the time. The unique features, including its environmentally benign nature, high mass energy density, and known as a clean energy carrier, make hydrogen energy an appealing substitute for fossil fuels in both mobile and fixed applications. Hydrogen has become the most significant source of energy as the need for energy increases. It is a crucial strategy for preventing the increase in pollutants and global temperature. Despite its advantages, the high flammability of H₂ requires adequate safety measurements at the points of storage, production and application. A safe, cost-efficient, compact and light hydrogen storage medium is essential for the hydrogen economy. Highly pressured gaseous hydrogen and liquid hydrogen storage systems are the conventional hydrogen storage systems. Solid-state storage systems have received interest because they can safely, compactly, and irreversibly store large amounts of hydrogen. This overview presents effective methods for hydrogen synthesis, storage, safe transportation, and application.Technologies for producing hydrogen are already commercially accessible, and some of them are still in development. Therefore, there is a desire to reduce the environmental impact of greenhouse gases and other pollutants that are increasing on a global scale. Even though there have been significant advancements in hydrogen technology, but more sustainable research efforts are still required to develop the techniques.

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引用次数: 0

Protection and fault ride-through techniques of VSC-HVDC systems for offshore wind power transmission—Research status, challenges, and prospects

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-18 DOI: 10.1016/j.rser.2024.115138

Jiawei He , Lei Xue , Bin Li , Ye Li , Eduardo Prieto-Araujo , Oriol Gomis-Bellmunt

The safe and reliable operation of offshore voltage-source-converter-based high-voltage direct current (VSC-HVDC) transmission systems poses a significant challenge to the vigorous development of offshore wind power. This research reviews and analyses the latest advances in protection and fault ride-through techniques for offshore VSC-HVDC wind power transmission systems, primarily including fault characteristic analysis, DC protection principles, fault current limitation, and energy dissipation techniques. The research begins by summarizing typical offshore wind power transmission types and their characteristics. Subsequently, the transient response characteristics of DC faults, fault-current calculation methods, and additional challenges in offshore VSC-HVDC systems, are analysed. Based on this, the current research status of non-unit and pilot protections for DC line are reviewed, and the brand-new protection challenges caused by distant offshore special locations are outlined. Thereafter, the fault ride-through techniques, primarily including DC fault current limitation and DC energy dissipation, are discussed. The technical difficulties regarding fault ride-through in offshore VSC-HVDC systems are presented. In addition, corresponding research approaches are discussed.

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引用次数: 0

Progress in insulated gate bipolar transistor thermal management: From fundamentals to advanced strategies

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-18 DOI: 10.1016/j.rser.2024.115219

Tauseef-ur Rehman, Cheol Woo Park

Renewable energy and electric vehicles are crucial subjects of the global transition towards a sustainable future. Insulated gate bipolar transistors (IGBTs) are essential components of these systems, generating substantial heat during operation. This review provides a comprehensive overview of the thermal control strategies for IGBTs, covering fundamental concepts, heat generation mechanisms, thermal failure modes and state-of-the-art cooling techniques. The review emphasises the reduction of junction temperature, thermal resistance and temperature gradient in IGBT chips and modules. Various cooling technologies are explored, including air and liquid cooling with novel configurations, PCM-based cooling, two-phase cooling (microchannels, thermosyphon and vapour chambers), nanofluid-based cooling, spray and jet impingement and hybrid configurations. This review highlights the significance of flow rate, fluid type, cooling system configuration and flow type (single or two-phase) on cooling performance. Key findings from extensive research are summarised, including the inadequacy of natural air circulation for thermal buffering, the effectiveness of passive cooling techniques for low to moderate heat generation, effectiveness of two-phase cooling for elevated heat flux and the directions for making the cooling systems hybrid (active and passive). This review sums up by discussing the outlook, challenges and future directions in IGBT thermal management, emphasising the need for further investigation into the diverse areas of thermal management leading towards the implications of the research at commercial level.

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引用次数: 0

Thermal rectifiers: Physical mechanisms and potential applications in buildings

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-18 DOI: 10.1016/j.rser.2024.115165

Heyu Zhang , Yongjia Wu , Tianhao Shi , Qinggang Wang , Caixia Wang , Qiong Chen , Tingzhen Ming

Improving the energy efficiency of buildings and reducing carbon dioxide emissions is an urgent priority to achieve carbon neutrality goals. Thermal rectifiers are unique asymmetric heat transfer devices that are crucial for numerous energy systems. This study conducted a detailed and comprehensive review of thermal rectifiers. The working principles, advantages, and applications of various thermal rectifiers were described. Key findings indicated that integrated thermal rectifiers not only meet the thermal management requirements of the system, but also play a crucial role in reducing energy consumption. In addition, based on the proven effectiveness of thermal rectifiers in energy systems, this study confirmed that incorporating thermal rectifiers into different building components could reduce building energy consumption and improve thermal comfort. The findings demonstrated that energy consumption could be reduced by at least 15 %, and thermal comfort could be improved by nearly 50 %. This study explored the potential of promoting high-performance thermal rectifiers for building applications, thereby providing new insights for engineering practice.

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引用次数: 0

Selection of passive energy consumption optimisation strategies for buildings

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-18 DOI: 10.1016/j.rser.2024.115222

Amirhossein Balali, Akilu Yunusa-Kaltungo

Passive energy consumption optimisation strategies are apt solutions to tackle the negative impacts of buildings on people and environment. However, the existence of numerous criteria has made the selection of suitable passive strategies very challenging and complicated, which is perhaps the reason for the scarcity of comprehensive studies that simultaneously consider all classes of selection criteria, especially technical, economic, and social ones. This study initially identifies the existing passive strategies and the criteria involved in their identification, weighting, ranking, and selection, with particular emphasis on buildings located in the United Kingdom. Questionnaire survey was utilised for data collection due to the reliance of specific selection criteria, such as “job creation”, on expert judgment. The gathered data were then analysed by the hybridisation of criteria importance through inter criteria correlation (CRITIC) and evaluation based on distance from average solution (EDAS) fuzzy approaches. Based on the obtained results, “reduction of greenhouse gas emissions”, “being environmentally friendly”, “flammability”, and “reduction of energy consumption” were ranked as the most important selection criteria. Consequently, the best and most sustainable passive strategies were concluded to be “improving fenestration design of building, “air tightness improvement of building”, and “optimum design of building's insulation layer”, with final scores of 0.882, 0.876, and 0.828, respectively. The results obtained from this study can have a significant role in sustainable selection of passive energy consumption optimisation strategies for United Kingdom buildings, consequently enhancing the realisation of critical Sustainable Development Goals, especially “Sustainable Cities and Communities”.

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引用次数: 0

Collaborative planning of multi-energy systems integrating complete hydrogen energy chain

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-18 DOI: 10.1016/j.rser.2024.115147

Xinning Yi , Tianguang Lu , Yixiao Li , Qian Ai , Ran Hao

Under the global low-carbon target, hydrogen is essential to address uneven energy spatial distribution and seasonal energy imbalances. However, the issues of insufficient energy interaction between different links (e.g., production, storage, and application) of hydrogen in planning models hinder the full hydrogen exploitation. This study proposes the concept of a complete hydrogen energy chain covering the energy flows of all the links and optimizes the hydrogen chain-based energy system’s bottom-up long-term investment strategy. It aims to facilitate the transfer of multiple energy flows across time and space for renewable energy efficient consumption. Firstly, a hydrogen chain-based fast clustering optimization method is proposed to deal with high-dimensional data to achieve a fast solution for large-scale long-term planning. Secondly, a high-resolution collaborative planning model of the multi-energy systems integrating the complete hydrogen energy chain is proposed, considering the renewable energy spatiotemporal distribution characteristics and annual hourly operation. Finally, this study thoroughly examines the optimal portfolio selection of different hydrogen technologies based on the differences in cost, flexibility, and efficiency. Taking Northeast China in 2050 as an example, the results show that: The proposed model reduces CO₂ emissions by 60 % with 30 % additional cost in Pareto analysis. At zero-carbon emissions, integrating the complete hydrogen energy chain reduces the renewable energy curtailment by 97.0 %. Meanwhile, the energy system prefers the electrolysis cells with the highest energy efficiency and the fuel cells with the fastest dynamic response. This study provides future energy system planning guidance for countries or regions to realize low-carbon targets.

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引用次数: 0

Advancements in methane pyrolysis: A comprehensive review of parameters and molten catalysts in bubble column reactors

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-17 DOI: 10.1016/j.rser.2024.115197

Mathesh Rao Gunarayu, Muhamad Fazly Abdul Patah, Wan Mohd Ashri Wan Daud

Methane pyrolysis using molten catalysts in bubble column reactors is a promising method for hydrogen production without carbon emissions. This review analyses the role of molten metal and salt catalysts, as well as key operating parameters, including reaction temperature, methane concentration, gas hourly space velocity, superficial gas velocity, and bubble size, alongside the impact of refractory coatings and reactor design on process efficiency. The findings reveal that molten tin and gallium catalysts achieve methane conversion rates exceeding 90 % at temperatures above 1000 °C, while molten salts help obtain carbon with high purity and provide operational stability. Methane concentration range from 90 to 100 % is shown to be optimal for maximizing hydrogen yield. A methane flow rate range of 100–300 ml/min, combined with adequate reactor volume and molten catalyst bed area, enhances gas-liquid interaction and methane conversion. Smaller bubble sizes, around 0.5 mm, are most effective for improving surface area and mass transfer, accelerating reaction kinetics and boosting conversion rates. The use of refractory coatings extends reactor lifespan by mitigating corrosion and thermal stress, while optimized reactor design, including increased column height and adjusted orifice size, improves gas dispersion and reactor performance. This review uniquely bridges the gap between molten metal catalysts and reactor dynamics in methane pyrolysis, offering actionable insights for process optimization and industrial scalability. By highlighting overlooked synergies and operational parameters, this study provides a novel and prospective roadmap for advancing hydrogen production technology.

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引用次数: 0

The influence of photovoltaic modules on the greenhouse micro-environment - A review

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-17 DOI: 10.1016/j.rser.2024.115214

Haoyi Yao , Jingkang Liang , Yunfeng Wang , Ming Li , Fangling Fan , Xun Ma , Xin Xiao

The application of facility agriculture led by greenhouse is considered as a good approach to regulate the ideal growing conditions for crops and boost productivity. To make up for the energy consumption of this modern agriculture, photovoltaic greenhouses have been emphasized. For agricultural greenhouses (whether ordinary or photovoltaic ones), it is of great significance to regulate the micro-environment in agricultural greenhouses to promote crop growth and yield while saving energy. By searching and classifying papers in the literature database with different keywords, it is found that most studies predominantly concentrate on one or two specific types of micro-environmental changes, such as light and heat or heat and humidity, with limited attention to the interaction of micro-environmental factors within greenhouses. Furthermore, the current research methodologies are relatively simplistic, typically employing only one or two approaches, such as measurement, simulation, or machine learning. Thus, the previous research on the theoretical and technological developments of light, thermal and humidity environment in greenhouse were reviewed, and the influence factors of micro-climate in both photovoltaic and ordinary greenhouse were summarized, which are more comprehensive than the previous state-of-the-art. Additionally, the results of recent studies are used to describe the way that greenhouse technology will develop in the future. A reference for future improvement of greenhouse design and diversified utilization of photovoltaic technology are provided, these new materials and technologies can ensure agricultural production while increasing energy efficiency, which have positive significance for achieving peak carbon emission.

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引用次数: 0

Innovative green technology: Pulse cycle vacuum drying with carbon crystal heating poised to supplant conventional vacuum drying methods

IF 16.3 1区工程技术 Q1 ENERGY & FUELS

Renewable and Sustainable Energy Reviews

Pub Date : 2024-12-17 DOI: 10.1016/j.rser.2024.115200

Jing-Shou Zhang , Hong-Mei Xiao , Valérie Orsat , G.S.V. Raghavan , Mehdi Torki , Haibin Wang , Hui Wang

Drying plays a crucial role in ensuring global food security by reducing the moisture content to ensure safe storage of agri-food products. This study aims to develop a carbon crystal heating - pulsed cycle vacuum drying (CH-PVD) equipment and improve its performance using alternating vacuum - normal pressure patterns and Carbon crystal infrared plates. The developed dryer was used to dehydrate garlic at 60–75 °C and compared with vacuum drying (VD) and vacuum freeze drying (VFD). At 65 °C, compared with VD, the developed dryer reduced drying time and carbon footprint by 32.55 % and 41.56 % respectively, enhanced energy efficiency by 68.10 %. The quality of the dried garlic slices obtained by CH-PVD was better than that of VD while it was worse than that obtained with VFD. However, the rehydration ratio of the dried garlic slices obtained by CH-PVD was 89.84 % higher than that of VFD. The energy analysis of the three dryers revealed that the vacuum pump was the most energy consuming component in CH-PVD and VD, while the cooling unit was the most energy consuming component in VFD. At the same drying temperature, heating in VD accounted for 48.30 % of the total energy consumption, while heating in CH-PVD accounted for only 5.02 %. Compared with VD and VFD, CH-PVD could effectively reduce greenhouse gas emissions and had a shorter simple payback period (0.38–0.81 years). Based on the results of this study, it can be concluded that the CH-PVD is a promising drying technology for potential application in the food industry.

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引用次数: 0