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1961 articles for “Disc” (ranking capped at the first 2,000 matches — narrow the search to see the rest)
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Energy Harvesting Technology and its Potential applications – A Mini Review
Abstract: AbstractEnergy harvesting also called power harvesting or power scavenging is the technique by which power is derived from external resources .Solar Energy System (SES) plays vital role in renewable energy systems. In this paper the need, types, Active and Passive Solar System, first generation solar system, second generation solar systems, third generation solar systems, advantages and disadvantages of SES was discussed. Additionally, basics of Hydrogen Energy harvesting, NGs harvesting, geothermal …
Published in Journal of Nuclear Engineering & Technology · Vol. 9, Issue 3, 2019 · pp. 33–43 Read article
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On The Time-Domain Analysis of the Electromagnetic Transients in High-Voltage Line Towers
Abstract: This paper presents an efficient and direct method for the time-domain transient analysis of high voltage power line towers. A Mathematica-based numerical solution of the governing set of simultaneous partial differential and algebraic equations is proposed. The results of a corresponding computer code are presented and discussed. A comparison with other more sophisticated analytical time-and Laplace-domain approaches is presented. In addition to the possible use of the EMTP transients’ program, …
Published in Journal of Nuclear Engineering & Technology · Vol. 13, Issue 2, 2023 · pp. 12–20 Read article
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Efficient PCB Fault Detection System using Deep Learning and Image Processing
Abstract: Printed Circuit Boards (PCBs) are essential parts that support the operation of electronic equipment in a variety of sectors. Nevertheless, difficulties that manufacturers regularly face during the PCB manufacturing process lead to defective devices. However, current inspection processes occur after etching, wasting a lot of material and rendering defective PCBs unusable. This study discusses relevant practical difficulties and offers a method for identifying errors in real PCB images using Matlab …
Published in Journal of Nuclear Engineering & Technology · Vol. 13, Issue 3, 2023 · pp. 1–5 Read article
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Appealing Recent Trends of Glass/Carbon Fiber Replacing Conventional Materials
Abstract: Use of glass reinforced fiber plastic and carbon reinforced fiber plastic is well known in many industries and have significant impact for the industrial revolution. Researchers and manufactures across these industries are always searching for opportunities to use GFRP and CFRP for new components. Other industries are finding the prospects to use these material for possible future. Many properties of these materials are favored and attracting most of the industrial …
Published in Journal of Polymer & Composites · Vol. 7, Issue 1, 2019 · pp. 1–6 Read article
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Chemical and Electrocoagulation for Chromium (VI) Removal from Galvanic Effluents
Abstract: Industrial effluents usually contain 10 to 500 mg/l Cr(VI); that according to internationalenvironmental rules must be set at permissible levels before being discharged into the environment.The upper permitted levels of chromium are 0.5 mg/l for effluent discharge and 0.01 mg/l for drinkingwater respectively. Hexavalent chromium is a very toxic heavy metal moiety occurring in variousindustrial wastewaters, such as electroplating, anodizing, tanning and dyeing effluents. Industrialeffluents may contain hundreds of mg/l …
Published in Journal of Polymer & Composites · Vol. 9, Issue 1, 2021 · pp. 49–55 Read article
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Review on Investigation of Tailor Welded Blanks of Dissimilar Aluminum-Magnesium Alloys and Hybrid Carbon Composites
Abstract: Reduction in weight, better fuel efficiency and cost effectiveness are the salient attractive features of Aluminum-Magnesium alloys and carbon composite materials. By making use of tailor welded blanks of dis similar materials of different strengths at appropriate locations in automobile outer body, one can achieve these objectives. At the same time, fabrication of these Tailor Welded blanks of Aluminum-Magnesium alloys, next generation carbon composite materials by usual fusion welding processes …
Published in Journal of Polymer & Composites · Vol. 9, Issue 2, 2021 · pp. 66–73 Read article
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Nanoparticles in Cutting-edge Healthcare: Current Use and Emerging Issues
Abstract: Nanoparticles are sub-micron-sized particles (less than 100 nm on average). Using these materials as contrast agents in imaging and as carriers for medication and gene transfer into malignancies has given them a prominent place in contemporary medicine. Nanoparticles allow for previously inconceivable levels of analysis and therapy. However, nanoparticles provide new societal and environmental challenges, especially regarding toxicity. In this overview, we discuss how nanoparticles have benefited contemporary medicine and …
Published in Journal of Polymer & Composites · Vol. 11, Issue 3, 2023 · pp. 105–118 Read article
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Electromagnetic Transients of a Sagging Conductor above Lossy Earth—Effect of its Loading and of the Earth Parameters
Abstract: This paper addresses the electromagnetic transients of a non-uniform overhead transmission line conductor with due consideration of its receiving-end load, its sag and of the earth parameters. The concept of the complex penetration depth is adopted in the formulation of the line’s equations in the s-domain. A relation for the conductor height as a function of the longitudinal co-ordinate is derived and incorporated in the analysis. The two simultaneous differential …
Published in Journal of Power Electronics and Power Systems · Vol. 7, Issue 3, 2017 · pp. 47–59 Read article
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Return on Investments and Payback Period Calculations for Solar Rooftop Power Plants: A Case Study for Gujarat, India
Abstract: Solar roof-top and ground-top systems are proven technology now-a-days. The roof-top systems are becoming popular in residential, commercial and industrial consumers. This paper deals with payback period calculations for 1 kW and 2 kW domestic and 15 kW industrial users at Rajkot, Gujarat, India. Different solar PV investment models are discussed here in this paper. Actual solar power generation data, as well as the project data for the different sites, …
Published in Journal of Power Electronics and Power Systems · Vol. 8, Issue 1, 2018 · pp. 24–28 Read article
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A Case Study: Diagnostic Testing of 16 MVA Power Transformer
Abstract: In this study describes the industrial research of tan delta test of power transformer (16 MVA 33/11 kV). In diagnostic test measurement, we check the insulation quality of power transformer. Transformer insulation quality is tested by insulation resistance test, tan delta and dissipation factor testing. In this article, we discussed about transformer tan delta test and comparison of transformer tan delta test result of after and before overhauling process. This …
Published in Journal of Power Electronics and Power Systems · Vol. 9, Issue 2, 2019 · pp. 1–4 Read article
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A Brief Review on Single Phase PV Micro-Inverter System
Abstract: This paper presents a review on recent developments and a summary of inverter technology for single phase grid-connected photovoltaic (PV) systems for power levels up to 5 kW. The functions of inverter include DC–AC conversion, output power quality assurance, various protection mechanisms, and system controls. PV inverters are classified in three categories which are centralized inverter, string inverter and module oriented or micro inverter. Centralized inverter, string inverter and module …
Published in Journal of Power Electronics and Power Systems · Vol. 5, Issue 2, 2015 · pp. 55–62 Read article
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Modeling and Simulation of a Chaotic Oscillator Using Mathematica
Abstract: This paper suggests a modified methodology for the modeling and simulation of a chaotic oscillator. Its analysis and the pertinent results of an efficient Mathematica simulation program dealing with a typical Chua's circuit are presented and discussed. The derived computer code is based on the application of state-variables in the time domain. The program yields the circuit’s currents and voltages and indicates their sensitivities to changes in the numerical values …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 1, 2021 · pp. 28–37 Read article
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Design and Analysis of a 100 kWp Grid Connected PV Solar Plant at a Coastal Area of Bangladesh
Abstract: In Bangladesh, the usage of electricity is continuously increasing. Govt. is also trying to increase the electricity production by installing new power plants to meet the additional power demands. Most of the power plants are natural gas-based, coal-based or nuclear power-based. Considering the greenhouse effect; solar power plants could be one of the best solutions to meet the additional power demands as well as it has a lot of financial …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 3, 2021 · pp. 33–39 Read article
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Impacts of Power Quality Issues in Electrical Distribution System
Abstract: The adoption of new modern technology and advance electronic equipment, energy saving methods, barriers, adopting of sustainable energy arrangements, generator power supply, invertors etc... harming the power quality of the electrical distribution system. If there is some kind divergence related to current, voltage and periodic at the load side that results in failure of consumer side equipment. In this paper we are going to discuss some factors which leads to …
Published in Journal of Power Electronics and Power Systems · Vol. 11, Issue 3, 2021 · pp. 40–47 Read article
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Different Ways to Maximize Electric Vehicle’s Battery Life
Abstract: This study examines alternative strategies for extending the battery life of electric vehicles (EVs). Enhancing the performance and endurance of batteries has been a crucial research area due to the rise in popularity of electric vehicles (EVs) in recent years and the growing concern about environmental issues. The significance of battery management systems (BMS), which can optimise charging and discharging cycles, and the effect of driving style on battery life …
Published in Journal of Power Electronics and Power Systems · Vol. 13, Issue 1, 2023 · pp. 44–49 Read article
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Modeling and Optimization of Continuous Gas Lift Performance in Libya Oil Field
Abstract: With a massive number of oil and gas field becoming mature, the upstream engineering is facing new challenge. How to develop , or at least steady production while keeping obtainable reserves at their existing level, As matter of fact unstable production in gas lift wells. The Key issues most operators encounter with oil fields are the effects of high water production that may lead to wells died and decrease in …
Published in Journal of Petroleum Engineering & Technology · Vol. 8, Issue 3, 2018 · pp. 40–48 Read article
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Performance of Equation-of-State for Hydrocarbon Dew Point Control in Gas Flow-line in a Nigerian Field
Abstract: Associated gas in a flow-line in a Nigerian field was suspected to be accountable for unaccounted-for gas in the flow-station. Gas molecular compositions of Low Pressure suction gas and Injection Discharge gas for operating conditions of pressure and temperature from the field were analysed by the use of Soave-Redlich Kwong and Peng-Robinson Equations of State with PVTp thermodynamic software. The phase envelope predicted the Hydrocarbon dew point(s) observable from the …
Published in Journal of Petroleum Engineering & Technology · Vol. 9, Issue 1, 2019 · pp. 7–13 Read article
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Review of Subsea Pipeline for Minimizing Thermal and Pressure Expansion
Abstract: As the offshore oil and gas fields have been exploited in deeper water, subsea pipelines are required to operate at high temperatures and pressures. It causes subsea pipelines to be more subject to movements both in lateral and axial directions due to the loads produced by high temperatures and pressures. Some high temperature pipelines have experienced the cumulative axial displacement of an overall pipeline length over a number of start-up/shut-in …
Published in Journal of Petroleum Engineering & Technology · Vol. 4, Issue 1, 2014 · pp. 10–22 Read article
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An Overview of Recent Advances in Viscoelastic Surfactant based Fracturing Fluid Technology
Abstract: High percentages of oil and gas wells are hydraulically fractured worldwide in order to make economically producible at an efficient production rate. Cross-linked polymer fluids are in use for decades to stimulate oil and gas wells. Even though these fluids exhibit exceptional viscosity, thermal stability, proppant transportability and fluid leak-off control; extensive formation damage by polymer residues demanded a clean fracturing fluid technology. New generation of fracturing fluids based upon …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 11–25 Read article
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Predictability of Equation of State (EoS)-based Gas Hydrate Models for Single and Binary Gas Mixtures
Abstract: The better models are necessary to design and understand the phase behavior of produced trapped natural gas from natural gas hydrates from subsea environments. Most of the models available in an open literature are primarily applicable at relatively low pressure condition thus making their use very limited for gas hydrate reservoir modeling. In order to produce methane from these gas hydrates, it is important to understand the phase behavior through …
Published in Journal of Petroleum Engineering & Technology · Vol. 2, Issue 1-3, 2012 · pp. 83–91 Read article