Integrated Evaluation of Electric Submersible Pump Failures under Diverse Field Operating ConditionsAbstract Electrical submersible pumps (ESPs) are an efficient and reliable artificial lift method for lifting large volumes of fluids from wellbores at flexible rates. Despite their advantages, including high flow rates and real-time downhole telemetry, ESPs are prone to frequent and unforeseen failures unde [...] 225 474 |
Modelling and Optimisation of Integrated Renewable Energy Conversion Technologies with Dual Energy Storage for an Islandby
Brendan Ifeany Ekwueme
,
Ogheneruona Endurance Diemuodeke
,
Mohammed Moore Ojapah
and
Chidozie Ezekwem
Abstract The work focused on modelling and optimisation of integrated renewable energy conversion technologies based on sunlight, wind, and biomass, with dual energy storage (battery and hydrogen), for Patani Island, Delta State, Nigeria. The study was aimed at satisfying the energy demand of the Patani Isla [...] 237 713 |
Quasi-Solid-State Electrolytes of Polyethylene Oxide-Based Composite Electrolyte with Liquid ElectrolytesAbstract A thin film of PEO18Li(CF3SO2)2N(LiTFSI)-tetraethylene glycol dimethyl ether (G4)-Li1.4Al0.4Ge0.2Ti1.4(PO [...] 356 893 |
Wind Turbine Tower Structural and Cost Optimisation within Acceptable Structural Integrityby
Emeka H. Amalu
and
Justice O. Nwaneto
Abstract As the demand for cleaner-greener energy surges owing to more nations adopting Net Zero Emission by 2050, wind turbine (WT) technology is increasingly poised as one of the technologies to match the demand. Capacity building in the development of cost-effective WT tower with improved reliability and [...] 445 1506 |
Integrating Small-Scale Geothermal into a Mini-Grid to Improve Electricity Access in NigeriaAbstract Increasing local energy access in developing countries, particularly in off-grid regions where mini-grids are often overloaded, remains a critically underexplored area in energy transition. These regions often face significant technical and economic challenges, such as low generation capacity, high [...] 729 1901 |
Acknowledgment to Reviewers of Journal of Energy and Power Technology in 2025Abstract The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2025. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We a [...] 447 983 |
Correlation between the Storage Pattern of Spent Fuel Casks and the Neutron Multiplication FactorAbstract The effective neutron multiplication factor (keff) of a fissile system is a function of space and time f(x, y, z,
418 1558 |
Advancing Marine Renewable Energy for Island Nations: Design and Development of a 20 kW Floating Kuroshio Turbine (FKT)Abstract Taiwan relies heavily on imported fossil fuels, with over 98% of its energy demand supplied by foreign sources, posing significant challenges to national energy security. To explore alternatives, this study investigates the potential of marine renewable energy by developing a 20 kW floating hydrokin [...] 583 1771 |
Framework for the Secured Integration of Renewable Energy into Power SystemsAbstract This research introduces a blockchain framework to improve security and transparency for the use of renewable energy in power systems. The framework utilizes a permissioned blockchain architecture and IoT-based real-time monitoring to ensure data integrity and confidentiality and support efficient p [...] 583 2038 |
BESS Sizing Optimization Combined with Optimal Scheduling Method Considering the Battery Degradation Using PSOAbstract Recently, renewable energy projects using storage systems have gained significant attention. This innovative technology requires a comprehensive investigation to overcome the technical and economic issues, which are related to optimal storage system capacity and operational requirements. In this stu [...] 1220 4301 |
Bridging Togo’s Energy Gap: Renewable Energy Potentials, Policy Challenges, and Strategic Pathways for Sustainable DevelopmentAbstract This work investigates the potential of renewable energy to significantly reduce Togo’s energy deficit, offering a critical analysis of the country’s current energy landscape. It evaluates the availability and viability of renewable energy sources—particularly solar and small-scale hydropower—and ex [...] 1136 6958 |
Photon Recycling for Indoor Energy Harvesting: Optical Optimization of LED-Driven Silicon Photovoltaic Systemsby
Anudeep Katepalli
,
Thiraj Mohankumar
,
Meher Saketh Gandharapu
,
Sagar Shrestha
,
Anton Harfmann
,
Mathias Bonmarin
,
John Krupczak
and
Donglu Shi
Abstract Indoor environments offer a unique opportunity for photon recycling using LED-based illumination, particularly to address energy limitations of solar photovoltaic (PV) systems during nighttime or in low-light conditions. This study presents an optical and electrical performance evaluation of silicon [...] 1018 4764 |
Fairness and Reasonableness Tariff Indicator (FRTI) to Meter and Compare Rate Policy in the Electricity Regimes. The Case of Argentina in 2022Abstract The tariff policy for energy services is a fundamental issue for today's societies, especially for end users, including residential, commercial, and industrial. The main objective of this paper is to propose a statistical method to calculate, compare, and evaluate policies of this nature. To this en [...] 918 5228 |
Lithium Stable Flexible Polyethylene Oxide-Based Composite Electrolyte with High Lithium-Ion Conducting NASICON-Type Solid Electrolyte for Lithium BatteriesAbstract Solid lithium-ion conducting polymer electrolytes are attractive candidates for battery applications because they are flexible and less flammable, and can be easily prepared as large-sized thin films. However, the room temperature conductivity of conventional polymer electrolytes is relatively low, [...] 932 5320 |
Gaseous Biofuels in Biorefineries: Biomethaneby
Gabriela Martínez-Machado
,
Laura Arely López-Gámez
,
Litzy Yazmin Alvarado-Mata
,
Roberto Muñoz-García
,
Jenny Priscila Salinas-Mireles
,
Ivan Artemio Corral-Guerrero
,
Maria Jose Castro-Alonso
,
Jazel Doménica Sosa-Martínez
,
Miriam Paulina Luévanos Escareño
,
Ayerim Yedid Hernández-Almanza
and
Nagamani Balagurusamy
Abstract The global production of biomethane is rapidly emerging as a sustainable alternative to fossil fuels for energy generation. Biogas, where methane (CH4) is usually one of the main components, is generated through the anaerobic digestion (AD) of various organic substrates, inclu [...] 1411 8349 |
Test Site for Small Wind Turbines – Technical and Logistical Issues of a Decade-Long ProjectAbstract This work addresses the main results of a test site for small wind turbines (SWTs) located in Patagonia, and the development of the measurement systems involved, including the uncertainties calculations according to applicable IEC standards. Due to market evolution for over a decade, the test system [...] 1155 6753 |
Environmental Impacts of Different Electricity Production Scenarios in FranceAbstract This study focuses on the environmental impacts of the electricity production scenarios proposed for France for 2060 by the French electricity network manager, RTE. They consider an increasing electricity consumption and a production without fossil fuels, essentially based on wind, photovoltaic, hyd [...] 1153 10498 |
Assessment of Water Balance Dynamics and Resource Stress in the Gaza Strip, Palestineby
Amjad Mizyed
Abstract Water scarcity is one of the most pressing global challenges, particularly in arid and semi-arid regions. In this context, the Gaza Strip, where groundwater is the only available natural water resource, faces severe water stress due to overexploitation and drought conditions. This study aimed to rev [...] 1246 7606 |
A Novel Approach to Carbon Monoxide Removal Using Transition Metal-Doped Boron Nitride Nanosensors for Environmental SustainabilityAbstract Adsorption of toxic gas of CO molecules by using transition metals of X (X = Ti, V, Cr, Co, Cu, Zn)-doped boron nitride nanocage (B5N10_NC) has been studied by computational chemistry. Based on NQR analysis, X-doped on B5N
939 4485 |
Design and Management of Renewable Energy Systems for Isolated Communities with No Grid ConnectionAbstract The growing demand for energy and the need to reduce dependence on non-renewable sources have driven the research and application of sustainable technologies. In this context, an integrated solution that combines distributed energy generation from renewable sources, such as wind and hydro, with effi [...] 1171 5986 |
Experimental Study and Kinetic Modeling of Agro-Industrial Wastes for Conversion to Fuel Gas via the Boudouard ReactionAbstract Independent parallel reactions (IPR) and distributed activation energy (DAEM) kinetic models were developed and compared for the combined pyrolysis-gasification of two agro-industrial waste materials. The aim was to recycle greenhouse gas carbon dioxide for mitigating emissions, to evaluate the ther [...] 1194 5333 |
Optimization of Heat Transfer in Parabolic Trough Collectors Using Advanced Turbulator Designs and Nanofluidsby
Mohsen Pourfallah
and
Ethan Languri
Abstract Parabolic trough collectors (PTCs) are essential for solar thermal energy systems, and their thermal efficiency can be significantly enhanced using turbulators and nanofluids. This numerical study introduces three novel fin-spiral turbulator configurations (4, 7, and 10 blades) to enhance heat trans [...] 1797 9974 |
Acknowledgment to Reviewers of Journal of Energy and Power Technology in 2024Abstract The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2024. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We a [...] 800 3832 |
Quantification and Comparative Analysis of Environmental Factors to Large-Scale Solar Plant’s Energy Performance via Regression and Linear Correlation Modelsby
Jazael Ballina
and
Yun Ii Go
Abstract Performance degradation, including system deterioration, corrosion, and energy loss in solar PV systems, can be caused by environmental conditions such as high humidity, frequent rainfall, and temperature swings in tropical nations. Over the years, photovoltaic energy has been successfully developed [...] 1239 10272 |
High Data Rate MWD Mud Pulse Telemetry – From Mysteries to DiscoveryAbstract Our new approach to MWD mud pulse telemetry offers significant increases over conventional data rates. Using waveguide acoustics, we show that common drilling communications channels support carrier frequencies exceeding several hundred Hertz. Such signals are prone to attenuation over large drill p [...] 3105 18895 |
Post-Combustion CO2 Capture from an Industrial Power Plant Using Five Chemical Solvents: A Comparative TEAAbstract CO2 capture processes using five chemical solvents were modeled in Aspen Plus V.12.1 for the capture of over 90% CO2 from a 456 ton/hour split flue gas stream containing 12.02 mol% CO2 emitted by the Longview 780 MW power plant (We [...] 2578 14138 |
Stability Improvement of Multimachine System Using Back-To-Back ConvertersAbstract As the penetration level of inverter-based generators continues to increase, it becomes crucial to reduce power oscillations between inverters and synchronous generators (SG) to improve system stability. This paper uses a multimachine system as the research platform and proposes a grid separation me [...] 1184 5249 |
The Brazilian Research Scenario in Green Hydrogen: A Brief Contextualizationby
Marco Antonio Gaya de Figueiredo
,
Luiza G. dos Santos
,
Rômulo Luciano Nascimento
and
Harrison Lourenço Corrêa
Abstract Hydrogen is crucial in various industrial sectors and can be obtained through different synthesis routes. However, a significant portion of its production still relies on chemical processes involving fossil fuels, resulting in hydrogen and the generation of greenhouse gases (GHGs) as the final bypro [...] 1880 9320 |
Nanostructure-Based Solid-State Energy Storage through Hydrogen Trapping in Batteries Using Materials Modelling TechniqueAbstract A comprehensive investigation on hydrogen grabbing by SiO-GeO was carried out, including DFT computations at the CAM-B3LYP-D3/6-311+G (d,p) level of theory. The data shows that if silicon elements are replaced by germanium, the H-grabbing energy will be ameliorated. Electromagnetic and thermodynamic [...] 1074 4963 |
Security Length Associated with the Risk of Ammonia Tank Leak Using CTOA Criterion and ALOHA SoftwareAbstract Ammonia is a toxic gas and can cause tragic consequences for humans. The damage level depends on concentration and duration of exposure. The security length associated with the risk of a tank leak at the acute exposure level of 30 ppm (AEGL-1) has been computed. Two tools have been combined: the CTO [...] 1006 6264 |
An Application of Excess Solar and Storage Capacity Optimization for Grid Servicesby
Maxim Rusakov
and
Faraz Farhidi
Abstract This initiative aims to enhance the efficiency of utility demand response (DR) operations by coordinating and integrating behind-the-meter (BTM) photovoltaic systems (PV) and energy storage (ES) using innovative machine learning software applications embedded in a distributed control architecture. T [...] 976 5451 |
Grid-Connected Photovoltaic System for Generating Energy to Dairy Farm ActivitiesAbstract Minas Gerais is the leading milk-producing state in Brazil, and many dairy activities are supplied with electricity by the cable aerial network of the electrical energy state company. Given that the Brazilian energy matrix relies primarily on hydroelectric power, studies on the potential [...] 1025 5607 |
Probabilistic Modeling of Cyber-Physical Microgrid Systems to Evaluate the Reliability and Resiliency Implications of Cyber Attacksby
Rajesh Karki
and
Binamra Adhikari
Abstract The integration of cyber and physical layer of the grid has not only introduced a microscopic spectacle to observe and ensure the efficient flow of electricity but has also exposed the interdependencies of the network. These cyber-physical interdependencies are often exploited in the form of cyber-a [...] 1498 8568 |
Physical Characterization of Solar Thermal Energy Storage (TES) Materials for Solar Dryers: Case of Volcanic Stone (Pozzolan) in Chadby
Michel Boukar
,
Etienne Tchoffo Houdji
,
Dimitri Valdes Tchuindjang Kwatchie
,
Guy Bertrand Tchaya
and
Danwe Raidandi
Abstract Many sensible heat storage materials are regularly used as thermal energy storage (TES) systems to improve the efficiency of solar dryers. The present work focuses on the effects of the volume and particle sizes of a volcanic stone (pozzolan) for the same purpose. Samples soaked in matt black and wi [...] 1753 8441 |
Elaboration, Structural and Optical Characterization of the New Ternary Chalcogenide SnSb2S5by
Assohoun Fulgence Kraidy
,
Islam M. El Radaf
,
Andreas Zeinert
,
Abdelilah Lahmar
,
Aime Pelaiz-Barranco
,
Pardis Simon
and
Yaovi Gagou
Abstract In this study, tin 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 as [...] 906 5402 |
The Effect of the Addition of Titanium Dioxide on Silicone Self-Adhesive TapesAbstract The investigation aimed to delve into the intricate relationship between the presence of titanium dioxide and the resulting alterations in the adhesive's behavior under different conditions. The focus extended beyond mere observation to understand how these additives interact with the adhesive matri [...] 1228 7880 |
Building Blocks for an Energy TransitionAbstract 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 [...] 1326 10027 |
Design and Techno-Economic Evaluation of a Hybrid Mini-grid System for an Academic Institutionby
Jesse Tanko Zarmai
,
Isaac Ibitoye Alabi
,
Ebimene Ezekiel Ebisine
,
Musa Tanko Zarmai
and
Ovis D. Irefu
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 e [...] 1783 11017 |
Local Authority Waste Management Strategies, the Circular Economy and the Generation of Energy from Waste in Englandby
Peter Jones
and
Martin Wynn
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 meth [...] 1208 7568 |
Wind Farm Layout Optimization Subject to Cable Cost, Hub Height, and a Feasible 3D Gaussian Wake Model ImplementationAbstract 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, whil [...] 1325 7666 |
A Review of North American Prospects for Power and Hot-Water Generation with Thermal EnergyAbstract 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 strate [...] 1000 5796 |
Nonlinear Optimal Control for a PMLSG-VSC Wave Energy Conversion Unitby
Gerasimos Rigatos
,
Pierluigi Siano
,
Mohammed AL-Numay
,
Masoud Abbaszadeh
and
Gennaro Cuccurullo
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 fo [...] 1242 6722 |
Floating Oscillating Water Column Wave Energy Converters: A Review of DevelopmentsAbstract The main challenge in designing offshore renewable energy structures is to ensure their structural integrity on a life cycle basis while operating in harsh environments and, in parallel, being financially competitive and environmentally friendly concerning other types of energy systems. The Oscillat [...] 5168 50436 |
Monitoring Energy-Loss-Driven-Cost by Using Earned Value Simulation in Complex SystemsAbstract The economic impact of energy loss stemming from end-user electricity consumption is a significant concern, with historical trends revealing escalating costs. Effectively managing both peak and off-peak demands remains a formidable challenge due to the unpredictable nature of consumer behaviors, lea [...] 1111 6536 |
LFO Damping Enhancement in Multimachine Network Using African Vulture Optimization AlgorithmAbstract The prolonged presence of low-frequency oscillation (LFO) in power system networks (PSN) poses a significant threat to their stability. Hence, engineers and researchers have continuously developed effective strategies to mitigate the issue and enhance the stability of the PSN. This article proposes [...] 1013 5656 |
Proposal for the Sustainable Electrification of a Primary Healthcare Centre (PHC) Facility in NigeriaAbstract Energy is a prerequisite to running health facilities and is, therefore, key to the success of the service. Karshi primary healthcare centre (PHC) facility is confronted with an unreliable power supply that leads to a high cost of generating power from diesel to operate its equipment. This facility [...] 1348 9709 |
Acknowledgment to Reviewers of Journal of Energy and Power Technology in 2023Abstract The editors of Journal of Energy and Power Technology would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2023. We greatly appreciate the contribution of expert reviewers, which is crucial to the journal's editorial process. We a [...] 950 4734 |
Stability Analysis of Autonomous Microgrid Operated at Constant-Frequency with the Consideration of Reactive Power Balanceby
Daming Zhang
and
Xiuhui Tang
Abstract Large-scale autonomous microgrids have potential application values as they can increase renewable energy penetration level without compromising the stability of the existing large power systems. Before their widespread implementation, critical issues like stability analysis etc need to be solved. T [...] 1196 6422 |
Array Formation Testing with Multiple Azimuthal and Axial Pressure TransducersAbstract An early formation tester operating a “sink probe” that extracts fluids from the borehole, also measures pressures at its location; pressures are additionally collected at two passive sensors, one situated 180 deg away and the second about meter axially. These positions are not conducive to accurate [...] 1314 7012 |
Saving is Losing: Pumping Cost vs. GHG Emissions in Water Distribution SystemsAbstract Global climate change has necessitated the reduction of GHG emissions. Water distribution system (WDS) pumping adds to these emissions and, therefore, should be reduced. Under electricity hourly cost tariffs, utilities are incentivized to pump during the nighttime hours. This can have a [...] 1555 7805 |
Net Zero Corridors: A Case Study Approach from Perth, Australia to Decarbonize Urban Power and Transportby
Peter Newman
and
Marie Verschuer
Abstract The transition to net zero cities is a pivotal challenge in the face of climate change. This research introduces a novel methodology termed "Net Zero Corridors," which emphasizes a bottom-up approach to decarbonize urban power and transport systems. By focusing on urban corrido [...] 1635 9698 |
Efficient Industrial Wastewater and Leachate Evaporation Utilizing Heat Localization in Porous MediaAbstract In this paper, an efficient industrial wastewater and leachate evaporation method is proposed and tested experimentally. The goal of this study is to investigate whether the addition of a carbon foam (CF) porous layer can lead to energy savings by evaporating more water mass per unit of energy input [...] 1394 8227 |
An Adsorption-Desorption Heat Engine for Power Generation from Waste HeatAbstract According to the United States Department of Energy, waste heat recovery would allow up to a 20% reduction in greenhouse gases (GHG) emission. Most of the waste energy is discharged as a low-grade heat at temperatures less than 250°C. Therefore, the development of new technologies and the en [...] 1579 9536 |
Technical Analysis of Sawdust-to-Power: A Paradigm Shift in Waste Management in a Typical Developing Economyby
Kesiena Owebor
,
Smith Orode Otuagoma
,
Ogheneakpobo Jonathan Eyenubo
,
Arthur Gogo Uranta
,
Friday Erhimudia Ukrakpor
,
Kesiena Ezewu
and
Ebimene Ezekiel Ebisine
Abstract The proper management of sawdust is critical to socioeconomic development. In this research, waste-to-energy has been proposed to utilize sawdust in selected timber markets in Port Harcourt, namely, Illoabuchi Timber Market, Marine Base Timber Market, and Mile 3 Timber Market. A quantita [...] 1559 11916 |
Na+ Mobility in PEO-Based Composite Solid-State Electrolytes by NMRby
Fariba Moradipour
,
Andreas Markert
,
Thomas Rudszuck
,
Niklas Röttgen
,
Gerald Dück
,
Martin Finsterbusch
,
Felix Gerbig
,
Hermann Nirschl
and
Gisela Guthausen
Abstract Charge transfer and mobility are essential for electrochemical processes in batteries, which need to be understood in detail for optimization, especially in the case of all-solid-state batteries. Wide line NMR is well-known in solid-state NMR and allows the quantification of ion mobility in ordered [...] 2416 10562 |
Enhancement Techniques for the Reduction of Heating and Cooling Loads in Buildings: A Reviewby
Kamal A.R. Ismail
,
Fatima A.M Lino
,
Jorge R. Henriquez
,
Mohamed Teggar
,
Abdelghani Laouer
,
Muslum Arici
,
Amani Benhorma
and
Daniel Rodríguez
Abstract The building sector is rated as a big consumer of electric energy and emissions, responsible for about 40% of final electric energy consumption. As a result, the Paris Agreement 2015 set a goal for buildings and the construction sector to reach a nearly zero-carbon stage by 2050. This urged most cou [...] 2734 20097 |
Generalized Normal Distribution Optimization Algorithm for Economic Dispatch with Renewable Resources IntegrationAbstract In an electric power system operation, the main goal of economic dispatch (ED) is to schedule the power outputs of committed generating units efficiently. This involves consideration of relevant system equality and inequality constraints to meet the required power demand at the lowest possible opera [...] 1363 9363 |
A Comparative Study of R134a and Propane (R290) as Refrigerants in Heat Pump Water Heatersby
Ann Lee
and
Shaokoon Cheng
Abstract In the context of decarbonization efforts, heat pump water heaters (HPWHs) offer an attractive solution over conventional electric resistance type hot water systems due to their 2-3 times higher efficiency. However, the high manufacturing costs and taxes associated with using hydrofluorocarbon (HFC) [...] 2792 45800 |
Overall Reaction Rate Study of Thermal Methane Cracking in Non-Isothermal ConditionsAbstract The thermal cracking of methane (TMC) is a significant reaction occurring above 850°C, which proceeds in two stages: non-isothermally and isothermally. However, most existing studies have focused on obtaining reaction rates under isothermal conditions [1], limiting their applicability to practical i [...] 1721 7818 |
Exploring the Potential of Phase Change Material for Thermal Energy Storage in Building EnvelopesAbstract Buildings, with their significant energy consumption, pose a pressing concern for the future. Inadequate heating, ventilation, and air-conditioning (HVAC) systems further exacerbate thermal management difficulties and energy requirements. To address these challenges, Phase Change Materials (PCMs) of [...] 1313 11234 |
Volt-Var Control for Utility-Scale Solar PV Plants to Downsize SVCs and Curtailment EffectsAbstract One way to increase solar photovoltaic penetration in the grid is the management of voltage fluctuations. This is because a photovoltaic plant cannot be interconnected to the grid if it causes voltage violations. Voltage violation is where voltage exceeds the acceptable range. Often, grid operators [...] 998 9857 |
Study and Characterization of a Spherical Solar Collector. Part II: Comparative Analysis with Flat-Plate DevicesAbstract The paper analyses the performance of a spherical solar collector compared to the efficiency of a flat-plate solar collector, which is the type of solar collector that does not use a tracking system in collecting solar radiation for energy conversion. Spherical solar collector benefits from a consta [...] 931 6794 |
Improving the Performance of Solar Thermal Energy Storage SystemsAbstract In recent times, renewable energy resources have been greatly researched because of the increasing concern to minimize global warming and meet energy demands. Energy storage systems have become useful tools for sustainability and meeting energy needs. Solar energy has proven in recent times to be th [...] 1716 13711 |
Permeability, Compressibility and Pressure Prediction in Supercharged Wireline and FTWD EnvironmentsAbstract In conventional wireline and LWD/MWD formation testing, downhole predictions for rock and fluid properties are based on simplified Darcy flow models, but only for mathematical expediency. These require initially constant pressures that are uniform throughout the reservoir. This limitatio [...] 1460 7948 |
Study and Characterization of a Spherical Solar Collector. I. Efficiency and Thermal Losses CoefficientAbstract This paper studies and characterizes a solar collector with spherical geometry to produce hot water for sanitary and domestic applications and other facilities. The new geometry enlarges the solar collector surface and allows full sun tracking during the day without needing a solar tracking system. [...] 1091 7357 |
Effects of Waste Cooking Oil Biodiesel on Performance, Combustion and Emission Characteristics of a Compression Ignition EngineAbstract With their higher sustainability index, biofuels, environmentally-friendly and renewable nature is a viable alternative energy source in the transportation sector. This study presents the effect of waste cooking oil (WCO) biodiesel on performance, combustion, and emission from a compression ignition [...] 1392 12711 |
A Review of Practical Applications of Fluid Flow and Associated Heat Transfer Modeling in WellboresAbstract Investigations on two-phase gas/liquid flow in pipes have been under study for nearly six decades. These studies have significantly assisted in managing fluid flow in the wellbore and surface networks, leading to the separation of phases and transmission of oil and gas into the market. T [...] 1646 11967 |
Nonlinear Optimal Control for Six-Phase Induction Generator-Based Renewable Energy SystemsAbstract The article aims at optimizing six-phase induction generator-based renewable energy systems (6-phase IGs or dual star induction generators) through a novel nonlinear optimal control method. Six-phase induction generators appear to be advantageous compared to three-phase synchronous or asynchronous p [...] 1236 8435 |
Fixed-Switching Frequency Finite-State Model Predictive Thrust and Primary Flux Linkage Control for LIMAbstract The special design of linear induction machines (LIMs) leads to adverse effects caused by the longitudinal and end effects. These effects make the thrust control of the LIMs most attractive because its value decreases sharply with the speed increase. Thus, finite-state model predictive control (FS-M [...] 1183 7731 |
Non-Isothermal Compressible Flow Model for Analyzing the Effect of High CO2 Inlet Flow Rate on Particle Size in a Supercritical Antisolvent Processby
Regiani Aparecida de Almeida
,
Ricardo Vicente de Paula Rezende
,
Flavia Aparecida Reitz Cardoso
and
Lucio Cardozo Filho
Abstract In this work with CFD simulations, the evaluation of the supercritical anti-solvent (SAS) process for producing nanoparticles from an expanded solution of ethanol/solute in carbon dioxide is reported. The influence of the solution and antisolvent flow rates on mean particle size, the flow dynamic, a [...] 1225 9131 |
Thermodynamic and Structural Optimization of Organic Rankine Cycle Plant for Clean Energy Access Using Artificial Bee Colony and Multi-Criteria Decision-Making Algorithmsby
Aniebiet D. Udoh
,
Ogheneruona E. Diemuodeke
,
Mohammed M. Ojapah
,
Fidelis I. Abam
and
Joseph C. Ofodu
Abstract The quest to decarbonize the energy space to avert the negative climate change consequences calls for using low/zero-carbon energy conversion technologies in the energy generation space. The Organic Rankine Cycle is a low/zero-carbon energy conversion technology for recovering waste heat from low to [...] 1535 7972 |
The Eastern Australian Floods of February 2022 and Its Relationship with Climate ChangeAbstract During February 2022 major riverine flooding occurred in an area which has the fastest population growth in Australia. This extended from the Mary River in Southeast Queensland (SEQ) to the Clarence River in Northeast NSW (NENSW). Two centres within this area were devastated by floods unprecedented [...] 3815 24971 |
Techno-Economic Analysis of Waste-to-Suburban Cooking Energy Critical Infrastructure Development in Southwestern NigeriaAbstract This study examined the techno-economic specifications for a Waste-to-Suburban Cooking Energy critical infrastructure project in Southwestern Nigeria. Technological and project economic data for the W2E project were obtained from strategic sources and energy project fore [...] 2221 13583 |
Influence of Biogas Digestates on the Composition of Soil Organic MatterAbstract The increasing number of biogas plants with various digested organic materials and output of digestates calls for more detailed investigations of their suitability as soil amendments. In a trial in Northern Germany two replicate plots each were treated with fresh or prolonged fermented digestate to [...] 1422 8225 |
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