Journal of Energy and Power Technology最新文献

Elaboration, Structural and Optical Characterization of the New Ternary Chalcogenide SnSb2S5 新型三元钙钛矿 SnSb2S5 的制备、结构和光学特性分析

Journal of Energy and Power Technology Pub Date : 2024-07-17 DOI: 10.21926/jept.2403013

A. F. Kraidy, I. M. El Radaf, Zeinert Andreas, Abdelilah Lahmar, A. Pelaiz-Barranco, Pardis Simon, Y. Gagou

{"title":"Elaboration, Structural and Optical Characterization of the New Ternary Chalcogenide SnSb2S5","authors":"A. F. Kraidy, I. M. El Radaf, Zeinert Andreas, Abdelilah Lahmar, A. Pelaiz-Barranco, Pardis Simon, Y. Gagou","doi":"10.21926/jept.2403013","DOIUrl":"https://doi.org/10.21926/jept.2403013","url":null,"abstract":"In this study, -antimony sulfide (SnSb2S5) thin films with 200 nm, 312 nm, and 431 nm thicknesses were successfully fabricated using thermal evaporation. These films' structural, optical, and photoanode properties were meticulously characterized to assess their suitability for photovoltaic applications. X-ray diffraction (XRD) analysis confirmed the presence of an orthorhombic symmetry phase within the Pnma space group, ensuring the crystalline quality of the films. Raman spectroscopy further validated the crystal structure and provided detailed identification of the vibrational active modes specific to this pseudo-binary chalcogenide compound. Optical characterization revealed that the SnSb2S5 thin films possess direct optical bandgap energies ranging from 1.91 to 1.99 eV, making them ideal for efficient light absorption in photovoltaic devices. The refractive index (n) displayed minimal variation within the absorption region, indicating stable optical properties. At the same time, it increased proportionally with film thickness outside the absorption region, suggesting enhanced optical behavior with thicker films. This characteristic is particularly advantageous for improving the efficiency of photoanode materials. The combination of favorable structural properties, optimal bandgap energies, and tunable optical responses positions SnSb2S5 thin films as promising candidates for advanced photovoltaic and optoelectronic applications. These findings highlight the potential of SnSb2S5 in developing high-performance photoanodes, contributing to the advancement of solar energy conversion technologies.","PeriodicalId":513413,"journal":{"name":"Journal of Energy and Power Technology","volume":" 19","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Effect of the Addition of Titanium Dioxide on Silicone Self-Adhesive Tapes 添加二氧化钛对硅酮自粘性胶带的影响

Journal of Energy and Power Technology Pub Date : 2024-05-13 DOI: 10.21926/jept.2402012

A. Antosik, Karolina Mozelewska, Marcin Bartkowiak

引用次数: 0

Building Blocks for an Energy Transition 能源转型的基石

Journal of Energy and Power Technology Pub Date : 2024-05-13 DOI: 10.21926/jept.2402011

Gilbert Ahamer

{"title":"Building Blocks for an Energy Transition","authors":"Gilbert Ahamer","doi":"10.21926/jept.2402011","DOIUrl":"https://doi.org/10.21926/jept.2402011","url":null,"abstract":"The present need for an energy transition in the wake of a global climate catastrophe led to the “EU green deal” which requires a transition of the energy system in all countries. This study aimis survey aims to identify strategies within such an energy transition based on global trend analyses and reports on available technologies for implementation. Based on a literature analysis of over 300 pieces (of feasibility studies and technology implementation reports with a focus on Central Europe) and a statistical analysis of the levels of “energy intensity” (E/GDP) covering three decades and all countries worldwide, the diagnosis is made that steady improvements in several dedicated technological focus areas can be made and were made and could still be increased in the future, as required by climate targets. Across several distinct fields of energy economy, the concrete options for such improvements are portrayed: Energy infrastructure, Smart grids, Transmission grid management, Electricity storage, Heat storage, and Industrial waste heat; and linked with the diagnosed long-term trends emerging from the “Global Change Data Base” GCDB, allowing for a sectorial analysis of the so-called energy intensity, which was not yet delivered until now as time series in the literature. The main findings show which economic sectors and clusters of technologies can be most appropriate to achieve climate targets while safeguarding social aspects of sustainability.","PeriodicalId":513413,"journal":{"name":"Journal of Energy and Power Technology","volume":"25 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140982857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design and Techno-Economic Evaluation of a Hybrid Mini-grid System for an Academic Institution 学术机构混合微型电网系统的设计与技术经济评价

Journal of Energy and Power Technology Pub Date : 2024-04-03 DOI: 10.21926/jept.2402010

Jesse Tanko Zarmai, Isaac Ibitoye Alabi, E. E. Ebisine, M. T. Zarmai, Ovis D. Irefu

{"title":"Design and Techno-Economic Evaluation of a Hybrid Mini-grid System for an Academic Institution","authors":"Jesse Tanko Zarmai, Isaac Ibitoye Alabi, E. E. Ebisine, M. T. Zarmai, Ovis D. Irefu","doi":"10.21926/jept.2402010","DOIUrl":"https://doi.org/10.21926/jept.2402010","url":null,"abstract":"Inadequate electricity supply is a global challenge that needs solutions. This situation has compelled the purchasing of fossil fuel-generating units for use in residential, commercial, and industrial sectors to generate electricity. However, using fossil fuel generating units cause greenhouse gas emissions, bringing about environmental pollution and ultimately resulting in climate change. In particular, educational institutions require adequate and reliable power supply to ensure proper learning and teaching, which is lacking in developing countries like Nigeria. Fortunately, Nigeria has enormous renewable energy sources such as solar energy, which can be utilized through photovoltaic (PV) modules to generate clean energy fed into a mini-grid. This novel approach focused on an educational institution that will enable adequate electricity from the mini-grid for proper learning and teaching, reduced negative environmental impacts, and lower energy costs. Therefore, this research is focused on developing an effective hybrid utility grid-diesel generator-solar PV mini-grid system for the Faculty of Engineering and Technology of the Nigerian Defence Academy, Kaduna. Design analysis and techno-economic evaluation of the mini-grid were carried out using the HOMER Pro software tool, which was also used to simulate and optimize the mini-grid. The results revealed that the hybrid system comprising the grid, diesel generator, PV, and converter was technically and economically viable. The net present cost (NPC) of $182,065.20, producing a total energy of 836,430 kWh/year, was obtained and gave 0.00198 $/kWh as a levelized cost of energy (LCOE). Correspondingly, a renewable fraction (RF) of 98.3% was attained, thus meeting the Faculty's daily load demand of 575.64 kWh/day, thereby providing a reliable and improved energy supply at the best cost. Therefore, a hybrid system such as this one is proposed for tertiary institutions to ensure greater electric power supply availability.","PeriodicalId":513413,"journal":{"name":"Journal of Energy and Power Technology","volume":"759 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140749315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local Authority Waste Management Strategies, the Circular Economy and the Generation of Energy from Waste in England 英格兰地方政府废物管理战略、循环经济和废物能源化

Journal of Energy and Power Technology Pub Date : 2024-04-01 DOI: 10.21926/jept.2402009

Peter Jones, Martin Wynn

{"title":"Local Authority Waste Management Strategies, the Circular Economy and the Generation of Energy from Waste in England","authors":"Peter Jones, Martin Wynn","doi":"10.21926/jept.2402009","DOIUrl":"https://doi.org/10.21926/jept.2402009","url":null,"abstract":"The purpose of this article is to examine the approach to waste management of local authorities in England, to investigate their strategic objectives, and to ascertain to what extent sustainability and circular economy practices are in evidence in this context. A qualitative, inductive research method is used, based on an examination of secondary documentation in three local authorities in England in Birmingham, Bristol and Newcastle upon Tyne. The findings reveal considerable common ground within the three authorities – the importance of consumption across society in contributing to the generation of waste, the need for behavioural change, a focus on reducing waste (particularly food waste), maximising recycling and re-use, reducing carbon dioxide emissions, and actively involving the local community and businesses. The case studies also evidence clear support for moving towards a more circular economy, but a number of key challenges were identified whilst initiatives to increase “waste to energy” face a number of potential hurdles. These include the generation of pollution and particulates by waste to energy plants, the destruction of useful materials, and the potential to disincentivize more sustainable waste management solutions. The article makes a small contribution to an existing gap in the academic literature and it is hoped these cases may act as a template for other research studies that could provide comparisons and contrasts in other local authority contexts.","PeriodicalId":513413,"journal":{"name":"Journal of Energy and Power Technology","volume":"65 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140794249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wind Farm Layout Optimization Subject to Cable Cost, Hub Height, and a Feasible 3D Gaussian Wake Model Implementation 根据电缆成本、轮毂高度和可行的 3D 高斯风模型实现风电场布局优化

Journal of Energy and Power Technology Pub Date : 2024-03-15 DOI: 10.21926/jept.2401008

Carsten Croonenbroeck, David Hennecke

{"title":"Wind Farm Layout Optimization Subject to Cable Cost, Hub Height, and a Feasible 3D Gaussian Wake Model Implementation","authors":"Carsten Croonenbroeck, David Hennecke","doi":"10.21926/jept.2401008","DOIUrl":"https://doi.org/10.21926/jept.2401008","url":null,"abstract":"We address the Wind Farm Layout Optimization (WFLO) problem and tackle the optimal placement of several turbines within a specific (wind farm) area by incorporating additional aspects of an economically driven target function. With this, we contribute three refinements for WFLO research: First, while many research contributions optimize the turbines’ locations subject to maximum energy production or energy efficiency, we instead pursue a strategy of maximizing a profit objective. This enables us to incorporate inner-farm wiring costs (underground cable installation). For this, we explore the impact of using MSTs (Minimum Spanning Trees) and adding junction (so-called “Steiner”) points to the terrain plane. Second, while most research focuses on finding optimal x and y coordinates (i.e., address two-dimensional turbine placement), we also optimize the turbines’ hub heights z. Third, we also provide a software implementation of the Gaussian wake model. The latter finds entrance to the open-source WFLO research framework that comes as package wflo for statistical software R. We find that taking wiring cost into account may lead to very different turbine placements, however, increasing overall profit significantly. Allowing the optimizer to vary the hub heights may have an ambiguous impact on the wind farm profit.","PeriodicalId":513413,"journal":{"name":"Journal of Energy and Power Technology","volume":"24 48","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140240331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear Optimal Control for a PMLSG-VSC Wave Energy Conversion Unit PMLSG-VSC 波能转换装置的非线性优化控制

Journal of Energy and Power Technology Pub Date : 2024-02-21 DOI: 10.21926/jept.2401006

G. Rigatos, Pierluigi Siano, Mohammed Numay, M. Abbaszadeh, G. Cuccurullo

{"title":"Nonlinear Optimal Control for a PMLSG-VSC Wave Energy Conversion Unit","authors":"G. Rigatos, Pierluigi Siano, Mohammed Numay, M. Abbaszadeh, G. Cuccurullo","doi":"10.21926/jept.2401006","DOIUrl":"https://doi.org/10.21926/jept.2401006","url":null,"abstract":"This article aims to treat the nonlinear control problem for the complex dynamics of a wave energy unit (WEC) that consists of a Permanent Magnet Linear Synchronous Generator (PMLSG) and a Voltage Source Converter (VSC). The article has developed a globally stable nonlinear optimal control method for this wave power generation unit. The new method avoids complicated state-space model transformations and minimizes the energy dispersion by the control loop. A novel nonlinear optimal control method is proposed for the dynamic model of a wave energy conversion system, which includes a Permanent Magnet Linear Synchronous Generator (PMLSG) serially connected with an AC/DC three-phase voltage source converter (VSC). The dynamic model of this renewable energy system is formulated and differential flatness properties are proven about it. To apply the proposed nonlinear optimal control, the state-space model of the PMLSG-VSC wave energy conversion unit undergoes an approximate linearization process at each sampling instance. The linearization procedure relies on a first-order Taylor-series expansion and involves the computation of the system’s Jacobian matrices. It takes place at each sampling interval around a temporary operating point, which is defined by the present value of the wave energy conversion unit’s state vector and by the last sampled value of the control inputs vector. An H-infinity feedback controller is designed for the linearized model of the wave energy conversion unit. To compute the feedback gains of this controller, an algebraic Riccati equation is repetitively solved at each time step of the control algorithm. The global stability properties of the control scheme are proven through Lyapunov analysis.","PeriodicalId":513413,"journal":{"name":"Journal of Energy and Power Technology","volume":"11 41","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140442668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Review of North American Prospects for Power and Hot-Water Generation with Thermal Energy 北美热能发电和热水供应前景综述

Journal of Energy and Power Technology Pub Date : 2024-02-21 DOI: 10.21926/jept.2401007

Jose Benavides, P. Sharma, Ahmed Al Saedi, Shah Kabir

{"title":"A Review of North American Prospects for Power and Hot-Water Generation with Thermal Energy","authors":"Jose Benavides, P. Sharma, Ahmed Al Saedi, Shah Kabir","doi":"10.21926/jept.2401007","DOIUrl":"https://doi.org/10.21926/jept.2401007","url":null,"abstract":"This article outlines an innovative approach to explore thermal energy extraction for power generation or industrial hot water applications. Unlike traditional steady-state models, this approach embraces time-variant scenarios, explicitly incorporating a cyclical fluid circulation strategy to maintain a stable surface fluid temperature or power output. By introducing an increasing and decreasing stepwise rate sequence and an intermittent circulation strategy, the method aims to optimize efficiency in response to varying geothermal gradients. This approach also considers the effect of well configurations namely U-shaped heat exchangers, and conventional wellbore heat exchangers. The study emphasizes the importance of assessing the value proposition of this rate-sequencing approach in different North American basins, with the potential for replication in other regions. This approach recognizes the geographic dependency of thermal prospects, particularly at specific well depths. Notably, the article explores the possibility of retrofitting abandoned wells in oil fields and drilling new wells in geothermal-friendly areas for a comparative analysis of their relative value propositions. In essence, the proposed roadmap signifies a departure from traditional models, showcasing a dynamic and adaptable strategy for thermal energy extraction. This strategy aligns with the need for energy transition and changing energy mix for the future. The inclusion of retrofitting existing wells and drilling in strategic locations adds a practical dimension to the study, offering insights into the scalability and applicability of the proposed approach beyond its initial geographic focus.","PeriodicalId":513413,"journal":{"name":"Journal of Energy and Power Technology","volume":"10 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140445023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Floating Oscillating Water Column Wave Energy Converters: A Review of Developments 浮动振荡水柱波能转换器：发展综述

Journal of Energy and Power Technology Pub Date : 2024-02-07 DOI: 10.21926/jept.2401005

Dimitrios Konispoliatis

引用次数: 0

Floating Oscillating Water Column Wave Energy Converters: A Review of Developments 浮动振荡水柱波能转换器：发展综述

Journal of Energy and Power Technology Pub Date : 2024-02-07 DOI: 10.21926/jept.2401005

Dimitrios Konispoliatis

引用次数: 0