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Open Access Original Research

Stochastic Assessment of Renewable Energy Reliability: A Case Study of North Euboea, Greece

Received: 20 December 2025;  Published: 20 April 2026;  doi: 10.21926/jept.2602008

Abstract

The increasing penetration of renewable energy sources (RES) in the energy mix, particularly solar photovoltaic and wind power, poses significant challenges to electricity grid reliability due to their inherent stochastic variability. This study develops a stochastic framework to assess the ability [...]

233 954

Open Access Original Research

Photovoltaic Power Forecasting Without Local Data: A Spatially-Aware Approach Using Neighboring Plants

Received: 17 October 2025;  Published: 03 April 2026;  doi: 10.21926/jept.2602007

Abstract

The increasing demand for renewable energy sources has intensified the adoption of photovoltaic systems. This study proposes predictive models for solar power generation that operate without dependence on on-site meteorological stations. The proposed approach integrates generation data from geograph [...]

237 1227

Open Access Review

Integrated Evaluation of Electric Submersible Pump Failures under Diverse Field Operating Conditions

Received: 09 September 2024;  Published: 26 March 2026;  doi: 10.21926/jept.2601006

Abstract

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 [...]

744 2028

Open Access Research Article

Modelling and Optimisation of Integrated Renewable Energy Conversion Technologies with Dual Energy Storage for an Island

Received: 17 September 2025;  Published: 09 March 2026;  doi: 10.21926/jept.2601005

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 [...]

365 1175

Open Access Original Research

Quasi-Solid-State Electrolytes of Polyethylene Oxide-Based Composite Electrolyte with Liquid Electrolytes

Received: 18 November 2025;  Published: 26 February 2026;  doi: 10.21926/jept.2601004

Abstract

A thin film of PEO18Li(CF3SO2)2N(LiTFSI)-tetraethylene glycol dimethyl ether (G4)-Li1.4Al0.4Ge0.2Ti1.4(PO [...]

508 1330

Open Access Original Research

Wind Turbine Tower Structural and Cost Optimisation within Acceptable Structural Integrity

Received: 26 June 2025;  Published: 13 February 2026;  doi: 10.21926/jept.2601003

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 [...]

640 2262

Open Access Research Article

Integrating Small-Scale Geothermal into a Mini-Grid to Improve Electricity Access in Nigeria

Received: 31 July 2025;  Published: 12 January 2026;  doi: 10.21926/jept.2601002

Abstract

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 [...]

942 2460

Open Access Editorial

Acknowledgment to Reviewers of Journal of Energy and Power Technology in 2025

Received: 04 January 2026;  Published: 04 January 2026;  doi: 10.21926/jept.2601001

Abstract

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 [...]

542 1200

Open Access Research Article

Correlation between the Storage Pattern of Spent Fuel Casks and the Neutron Multiplication Factor

Received: 21 April 2025;  Published: 19 December 2025;  doi: 10.21926/jept.2504018

Abstract

The effective neutron multiplication factor (keff) of a fissile system is a function of space and time f(x, y, z,

513 1965

Open Access Original Research

Advancing Marine Renewable Energy for Island Nations: Design and Development of a 20 kW Floating Kuroshio Turbine (FKT)

Received: 15 September 2025;  Published: 10 December 2025;  doi: 10.21926/jept.2504017

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 [...]

718 2200

Open Access Original Research

Framework for the Secured Integration of Renewable Energy into Power Systems

Received: 11 June 2025;  Published: 05 December 2025;  doi: 10.21926/jept.2504016

Abstract

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 [...]

692 2304

Open Access Original Research

BESS Sizing Optimization Combined with Optimal Scheduling Method Considering the Battery Degradation Using PSO

Received: 17 June 2025;  Published: 24 October 2025;  doi: 10.21926/jept.2504015

Abstract

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 [...]

1487 5082

Open Access Review

Bridging Togo’s Energy Gap: Renewable Energy Potentials, Policy Challenges, and Strategic Pathways for Sustainable Development

Received: 22 December 2024;  Published: 13 October 2025;  doi: 10.21926/jept.2504014

Abstract

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 [...]

1337 7731

Open Access Original Research

Photon Recycling for Indoor Energy Harvesting: Optical Optimization of LED-Driven Silicon Photovoltaic Systems

Received: 06 July 2025;  Published: 11 September 2025;  doi: 10.21926/jept.2503013

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 [...]

1179 5300

Open Access Original Research

Fairness and Reasonableness Tariff Indicator (FRTI) to Meter and Compare Rate Policy in the Electricity Regimes. The Case of Argentina in 2022

Received: 01 May 2025;  Published: 25 August 2025;  doi: 10.21926/jept.2503012

Abstract

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 [...]

1049 5518

Open Access Original Research

Lithium Stable Flexible Polyethylene Oxide-Based Composite Electrolyte with High Lithium-Ion Conducting NASICON-Type Solid Electrolyte for Lithium Batteries

Received: 28 April 2025;  Published: 13 August 2025;  doi: 10.21926/jept.2503011

Abstract

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, [...]

1010 5733

Open Access Review

Gaseous Biofuels in Biorefineries: Biomethane

Received: 20 February 2025;  Published: 13 May 2025;  doi: 10.21926/jept.2502010

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 [...]

1570 8931

Open Access Project Report

Test Site for Small Wind Turbines – Technical and Logistical Issues of a Decade-Long Project

Received: 31 October 2024;  Published: 05 May 2025;  doi: 10.21926/jept.2502009

Abstract

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 [...]

1295 7406

Open Access Original Research

Environmental Impacts of Different Electricity Production Scenarios in France

Received: 20 September 2024;  Published: 30 April 2025;  doi: 10.21926/jept.2502008

Abstract

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 [...]

1308 11411

Open Access Review

Assessment of Water Balance Dynamics and Resource Stress in the Gaza Strip, Palestine

Received: 23 December 2024;  Published: 21 April 2025;  doi: 10.21926/jept.2502007

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 [...]

1353 7960

Open Access Original Research

A Novel Approach to Carbon Monoxide Removal Using Transition Metal-Doped Boron Nitride Nanosensors for Environmental Sustainability

Received: 12 November 2024;  Published: 02 April 2025;  doi: 10.21926/jept.2502006

Abstract

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

1003 4686

Open Access Research Article

Design and Management of Renewable Energy Systems for Isolated Communities with No Grid Connection

Received: 10 October 2024;  Published: 07 March 2025;  doi: 10.21926/jept.2501005

Abstract

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 [...]

1264 6414

Open Access Original Research

Experimental Study and Kinetic Modeling of Agro-Industrial Wastes for Conversion to Fuel Gas via the Boudouard Reaction

Received: 12 November 2024;  Published: 24 January 2025;  doi: 10.21926/jept.2501004

Abstract

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 [...]

1290 5558

Open Access Original Research

Optimization of Heat Transfer in Parabolic Trough Collectors Using Advanced Turbulator Designs and Nanofluids

Received: 19 October 2024;  Published: 15 January 2025;  doi: 10.21926/jept.2501003

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 [...]

1926 10347

Open Access Editorial

Acknowledgment to Reviewers of Journal of Energy and Power Technology in 2024

Received: 02 January 2025;  Published: 02 January 2025;  doi: 10.21926/jept.2501002

Abstract

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 [...]

872 3999

Open Access Original Research

Quantification and Comparative Analysis of Environmental Factors to Large-Scale Solar Plant’s Energy Performance via Regression and Linear Correlation Models

Received: 15 September 2024;  Published: 02 January 2025;  doi: 10.21926/jept.2501001

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 [...]

1318 10765

Open Access Original Research

High Data Rate MWD Mud Pulse Telemetry – From Mysteries to Discovery

Received: 07 September 2024;  Published: 06 December 2024;  doi: 10.21926/jept.2404023

Abstract

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 [...]

3361 20239

Open Access Original Research

Post-Combustion CO2 Capture from an Industrial Power Plant Using Five Chemical Solvents: A Comparative TEA

Received: 19 August 2024;  Published: 21 November 2024;  doi: 10.21926/jept.2404022

Abstract

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 [...]

2763 15095

Open Access Original Research

Stability Improvement of Multimachine System Using Back-To-Back Converters

Received: 15 July 2024;  Published: 15 November 2024;  doi: 10.21926/jept.2404021

Abstract

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 [...]

1258 5436

Open Access Short Report

The Brazilian Research Scenario in Green Hydrogen: A Brief Contextualization

Received: 18 April 2024;  Published: 11 November 2024;  doi: 10.21926/jept.2404020

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 [...]

1964 9584

Open Access Original Research

Nanostructure-Based Solid-State Energy Storage through Hydrogen Trapping in Batteries Using Materials Modelling Technique

Received: 15 August 2024;  Published: 07 November 2024;  doi: 10.21926/jept.2404019

Abstract

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 [...]

1173 5171

Open Access Original Research

Security Length Associated with the Risk of Ammonia Tank Leak Using CTOA Criterion and ALOHA Software

Received: 06 August 2024;  Published: 31 October 2024;  doi: 10.21926/jept.2404018

Abstract

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 [...]

1129 6622

Open Access Original Research

An Application of Excess Solar and Storage Capacity Optimization for Grid Services

Received: 11 May 2024;  Published: 20 September 2024;  doi: 10.21926/jept.2403017

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 [...]

1057 5659

Open Access Research Article

Grid-Connected Photovoltaic System for Generating Energy to Dairy Farm Activities

Received: 28 April 2024;  Published: 26 August 2024;  doi: 10.21926/jept.2403016

Abstract

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 [...]

1130 5838

Open Access Original Research

Probabilistic Modeling of Cyber-Physical Microgrid Systems to Evaluate the Reliability and Resiliency Implications of Cyber Attacks

Received: 02 April 2024;  Published: 07 August 2024;  doi: 10.21926/jept.2403015

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 [...]

1595 8854

Open Access Research Article

Physical Characterization of Solar Thermal Energy Storage (TES) Materials for Solar Dryers: Case of Volcanic Stone (Pozzolan) in Chad

Received: 25 March 2024;  Published: 01 August 2024;  doi: 10.21926/jept.2403014

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 [...]

1859 8699

Open Access Original Research

Elaboration, Structural and Optical Characterization of the New Ternary Chalcogenide SnSb2S5

Received: 29 March 2024;  Published: 17 July 2024;  doi: 10.21926/jept.2403013

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 [...]

980 5627

Open Access Original Research

The Effect of the Addition of Titanium Dioxide on Silicone Self-Adhesive Tapes

Received: 29 February 2024;  Published: 13 May 2024;  doi: 10.21926/jept.2402012

Abstract

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 [...]

1333 8114

Open Access Original Research

Building Blocks for an Energy Transition

Received: 07 December 2023;  Published: 13 May 2024;  doi: 10.21926/jept.2402011

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 [...]

1390 10542

Open Access Original Research

Design and Techno-Economic Evaluation of a Hybrid Mini-grid System for an Academic Institution

Received: 26 September 2023;  Published: 03 April 2024;  doi: 10.21926/jept.2402010

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 [...]

1933 11462

Open Access Research Article

Local Authority Waste Management Strategies, the Circular Economy and the Generation of Energy from Waste in England

Received: 17 February 2024;  Published: 01 April 2024;  doi: 10.21926/jept.2402009

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 [...]

1273 7768

Open Access Original Research

Wind Farm Layout Optimization Subject to Cable Cost, Hub Height, and a Feasible 3D Gaussian Wake Model Implementation

Received: 06 February 2024;  Published: 15 March 2024;  doi: 10.21926/jept.2401008

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, whil [...]

1428 7949

Open Access Review

A Review of North American Prospects for Power and Hot-Water Generation with Thermal Energy

Received: 20 November 2023;  Published: 21 February 2024;  doi: 10.21926/jept.2401007

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 strate [...]

1061 5970

Open Access Original Research

Nonlinear Optimal Control for a PMLSG-VSC Wave Energy Conversion Unit

Received: 16 September 2023;  Published: 21 February 2024;  doi: 10.21926/jept.2401006

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 [...]

1306 6951

Open Access Review

Floating Oscillating Water Column Wave Energy Converters: A Review of Developments

Received: 09 December 2023;  Published: 07 February 2024;  doi: 10.21926/jept.2401005

Abstract

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 [...]

5601 52769

Open Access Research Article

Monitoring Energy-Loss-Driven-Cost by Using Earned Value Simulation in Complex Systems

Received: 24 July 2023;  Published: 06 February 2024;  doi: 10.21926/jept.2401004

Abstract

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 [...]

1181 6718

Open Access Original Research

LFO Damping Enhancement in Multimachine Network Using African Vulture Optimization Algorithm

Received: 20 June 2023;  Published: 30 January 2024;  doi: 10.21926/jept.2401003

Abstract

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 [...]

1062 5806

Open Access Original Research

Proposal for the Sustainable Electrification of a Primary Healthcare Centre (PHC) Facility in Nigeria

Received: 06 August 2023;  Published: 24 January 2024;  doi: 10.21926/jept.2401002

Abstract

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 [...]

1470 10006

Open Access Editorial

Acknowledgment to Reviewers of Journal of Energy and Power Technology in 2023

Received: 04 January 2024;  Published: 05 January 2024;  doi: 10.21926/jept.2401001

Abstract

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 [...]

994 4847

Open Access Original Research

Stability Analysis of Autonomous Microgrid Operated at Constant-Frequency with the Consideration of Reactive Power Balance

Received: 01 September 2023;  Published: 29 November 2023;  doi: 10.21926/jept.2304039

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 [...]

1263 6620

Open Access Original Research

Array Formation Testing with Multiple Azimuthal and Axial Pressure Transducers

Received: 12 April 2023;  Published: 27 November 2023;  doi: 10.21926/jept.2304038

Abstract

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 [...]

1423 7272

Open Access Research Article

Saving is Losing: Pumping Cost vs. GHG Emissions in Water Distribution Systems

Received: 26 May 2023;  Published: 21 November 2023;  doi: 10.21926/jept.2304037

Abstract

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 [...]

1798 8216

Open Access Concept Paper

Net Zero Corridors: A Case Study Approach from Perth, Australia to Decarbonize Urban Power and Transport

Received: 27 February 2023;  Published: 17 November 2023;  doi: 10.21926/jept.2304036

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 [...]

1773 10004

Open Access Original Research

Efficient Industrial Wastewater and Leachate Evaporation Utilizing Heat Localization in Porous Media

Received: 31 August 2023;  Published: 16 November 2023;  doi: 10.21926/jept.2304035

Abstract

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 [...]

1511 8525

Open Access Original Research

An Adsorption-Desorption Heat Engine for Power Generation from Waste Heat

Received: 17 October 2023;  Published: 14 November 2023;  doi: 10.21926/jept.2304034

Abstract

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 [...]

1673 9801

Open Access Original Research

Technical Analysis of Sawdust-to-Power: A Paradigm Shift in Waste Management in a Typical Developing Economy

Received: 01 August 2023;  Published: 08 November 2023;  doi: 10.21926/jept.2304033

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 [...]

1678 12229

Open Access Research Article

Na+ Mobility in PEO-Based Composite Solid-State Electrolytes by NMR

Received: 04 August 2023;  Published: 02 November 2023;  doi: 10.21926/jept.2304032

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 [...]

2662 11136

Open Access Review

Enhancement Techniques for the Reduction of Heating and Cooling Loads in Buildings: A Review

Received: 12 June 2023;  Published: 19 October 2023;  doi: 10.21926/jept.2304031

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 [...]

2968 20896

Open Access Original Research

Generalized Normal Distribution Optimization Algorithm for Economic Dispatch with Renewable Resources Integration

Received: 18 June 2023;  Published: 28 September 2023;  doi: 10.21926/jept.2303030

Abstract

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 [...]

1428 9661

Open Access Original Research

A Comparative Study of R134a and Propane (R290) as Refrigerants in Heat Pump Water Heaters

Received: 26 March 2023;  Published: 18 September 2023;  doi: 10.21926/jept.2303029

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) [...]

3142 47271

Open Access Original Research

Overall Reaction Rate Study of Thermal Methane Cracking in Non-Isothermal Conditions

Received: 10 April 2023;  Published: 13 September 2023;  doi: 10.21926/jept.2303028

Abstract

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 [...]

1830 8142

Open Access Original Research

Exploring the Potential of Phase Change Material for Thermal Energy Storage in Building Envelopes

Received: 16 June 2023;  Published: 08 September 2023;  doi: 10.21926/jept.2303027

Abstract

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 [...]

1390 11866

Open Access Original Research

Volt-Var Control for Utility-Scale Solar PV Plants to Downsize SVCs and Curtailment Effects

Received: 09 March 2023;  Published: 03 August 2023;  doi: 10.21926/jept.2303026

Abstract

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 [...]

1065 10261

Open Access Original Research

Study and Characterization of a Spherical Solar Collector. Part II: Comparative Analysis with Flat-Plate Devices

Received: 18 May 2023;  Published: 27 July 2023;  doi: 10.21926/jept.2303025

Abstract

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 [...]

1001 6986

Open Access Review

Improving the Performance of Solar Thermal Energy Storage Systems

Received: 29 May 2023;  Published: 18 July 2023;  doi: 10.21926/jept.2303024

Abstract

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 [...]

1824 14090

Open Access Research Article

Permeability, Compressibility and Pressure Prediction in Supercharged Wireline and FTWD Environments

Received: 12 April 2023;  Published: 10 July 2023;  doi: 10.21926/jept.2303023

Abstract

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 [...]

1591 8234

Open Access Research Article

Study and Characterization of a Spherical Solar Collector. I. Efficiency and Thermal Losses Coefficient

Received: 21 April 2023;  Published: 04 July 2023;  doi: 10.21926/jept.2303022

Abstract

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. [...]

1197 7598

Open Access Retraction

Retraction: Simani S, Farsoni S, Castaldi P. Transfer Learning for Fault Detection with Application to Wind Turbine SCADA Data. Journal of Energy and Power Technology 2023; 5(1): 011

Received: 25 June 2023;  Published: 28 June 2023;  doi: 10.21926/jept.2302021

922 5220

Open Access Original Research

Effects of Waste Cooking Oil Biodiesel on Performance, Combustion and Emission Characteristics of a Compression Ignition Engine

Received: 07 February 2023;  Published: 20 June 2023;  doi: 10.21926/jept.2302020

Abstract

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 [...]

1486 13045

Open Access Review

A Review of Practical Applications of Fluid Flow and Associated Heat Transfer Modeling in Wellbores

Received: 28 March 2023;  Published: 12 June 2023;  doi: 10.21926/jept.2302019

Abstract

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 [...]

1748 12690

Open Access Original Research

Nonlinear Optimal Control for Six-Phase Induction Generator-Based Renewable Energy Systems

Received: 07 December 2022;  Published: 11 May 2023;  doi: 10.21926/jept.2302018

Abstract

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 [...]

1293 8654

Open Access Original Research

Fixed-Switching Frequency Finite-State Model Predictive Thrust and Primary Flux Linkage Control for LIM

Received: 14 February 2023;  Published: 09 May 2023;  doi: 10.21926/jept.2302017

Abstract

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 [...]

1234 7966

Open Access Original Research

Non-Isothermal Compressible Flow Model for Analyzing the Effect of High CO2 Inlet Flow Rate on Particle Size in a Supercritical Antisolvent Process

Received: 17 December 2022;  Published: 18 April 2023;  doi: 10.21926/jept.2302016

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 [...]

1311 9342

Open Access Original Research

Thermodynamic and Structural Optimization of Organic Rankine Cycle Plant for Clean Energy Access Using Artificial Bee Colony and Multi-Criteria Decision-Making Algorithms

Received: 29 December 2022;  Published: 13 April 2023;  doi: 10.21926/jept.2302015

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 [...]

1649 8233

Open Access Review

The Eastern Australian Floods of February 2022 and Its Relationship with Climate Change

Received: 19 October 2022;  Published: 07 April 2023;  doi: 10.21926/jept.2302014

Abstract

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 [...]

4184 25773

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