Journal articles on the topic 'Power generated industry'
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1
Adepoju, Tofunmi D., Abiodun S. Momodu, Ibikunle O. Ogundari, and Joshua Akarakiri. "Energy Recovery Potential from Effluents in the Process Industry: System Dynamics Modeling and Techno-Economic Assessments." Fuels 3, no. 4 (November 4, 2022): 627–41. http://dx.doi.org/10.3390/fuels3040038.
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This study quantifies the effluents generated during processing in three industry types, estimates the energy potential from the quantified effluents in the form of biogas generation, and determines the economic viability of the biogas recovered. Data were procured from the relevant scientific publications to quantify the effluents generated from the production processes in the industry types examined, using industrial process calculations. The effluent data generated are used in the 2-module biogas energy recovery model to estimate the bioenergy recovery potential within it. Economic and financial analysis is based on a cash-flow comparison of all costs and benefits resulting from its activities. The effluents generated an average daily biogas of 2559 Nm3/gVS, having a daily potential combined heat and power of 0.52 GWh and 0.11 GWh, respectively. The life cycle analysis and cost-benefit analysis show the quantity of emissions avoided when using the effluents to generate heat and power for processes, along with the profitability of the approach. Conclusively, the study shows that the use of biomass effluents to generate biogas for Combined Heat and Power (CHP) is a viable one, based on the technologies of a reciprocating engine, gas turbine, microturbine, and fuel cell. However, it is recommended that the theoretical estimation be validated using a field-scale project.
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Ramli, Suzana, Aminuddin Mohd Baki, Muhamad Azmi Ayub, Suhaimi Abdul Talib, Ramlah Mohd Tajuddin, Ismail Atan, Jurina Jaafar, and Nur Aziafwani Abdullah. "Renewable energy from biogas generated by sewage sludge – relationship between sludge volume and power generated." Scientific Research Journal 5, no. 2 (December 31, 2008): 1. http://dx.doi.org/10.24191/srj.v5i2.5641.
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Biogas is a product of decomposition of organic matter during the process of anaerobic digestion (AD). The main components are methane and carbon dioxide. The methane content in the biogas enables it to be used as fuel which can be converted to heat and electricity. The biogas generated by the anaerobic digesters has the potential to be redirected from the flaring facilities to renewable energy (RE) facilities. The biogas may then be used to generate electricity, which in turn can operate the sewage treatment plant (STP) itself. However, feedbacks from the sewerage industry indicated that heavy investments are needed for any RE initiatives on biogas generated by sewage sludge. In order to find the cost effective way of generating energy from biogas, fundamental relationships are necessary to enable development of prototype in the future. Thus, this paper presents a study to establish the relationship between the volume of sludge and the amount of power and energy that can be generated.
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Mahesh G. Emmi, Mr, Dr Aravindrao M. Yadwad, Dr Vinay V. Kuppast, and Dr Sampanna M. "Survey on bagasse cogeneration in sugar plants of north Karnataka." International Journal of Engineering & Technology 7, no. 4.5 (September 22, 2018): 621. http://dx.doi.org/10.14419/ijet.v7i4.5.21171.
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Cogeneration is the idea of converting two forms of energy from one fuel. In the sugar industry from bagasse two forms con- verted are heat and electrical power. The sugar industries utilise bagasse to generate power and to operate the plant . Here the bagasse serves as a fuel to the Boiler and this power consumption is known as captive power generation. The so generated power will be more than the power required for the running of the industry. The remaining excess power can be fed to the power grid as a power export.The actual site survey of different bagasse cogeneration plants has been carried out and included in this review. Also, this paper reviews the performance of the bagasse cogeneration plants all over the world. The review includes not only study on the power genera- tion plants but also throws an insight to identify the scope for the study on the performances of the cogeneration plants in Karnataka based on the global perview. The effective and efficient utilisation of the bagasse cogeneration plants could be identified for the im- provement of the performance of the cogeneration plants and also the economics of running a sugar industry.
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Krishna, T. N. V., P. Sathishkumar, P. Himasree, Dinah Punnoose, K. V. G. Raghavendra, Himanshu, Bandari Naresh, R. A. Rana, and Hee-Je Kim. "4T Analog MOS Control-High Voltage High Frequency (HVHF) Plasma Switching Power Supply for Water Purification in Industrial Applications." Electronics 7, no. 10 (October 11, 2018): 245. http://dx.doi.org/10.3390/electronics7100245.
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High-power plasma power supply is very useful for many industrial and medical applications. Plasma is generated artificially in the laboratory or industry by applying the electric or magnetic field. In this manuscript, we presented the simple 4T analog MOS control high voltage high frequency inverter circuit as a plasma power supply using modulation index technique. The presented plasma power supply operated at 25 kHz frequency and 10 kV peak to peak voltage. It generates a 0 V to 10 kV controllable electric field. The generated electric field is applied and produces plasma, which can be used for many industrial applications. A 10 kV to 5 kW plasma power supply has been practically developed based on the proposed topology and experimentally tested and, additionally, excellent output power conversion efficiency is achieved. From these results, the 4T analog MOS control high voltage high frequency (HVHF) plasma switching power supply is verified.
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Draper, Nora. "Group Power: Discourses of Consumer Power and Surveillance in Group Buying Websites." Surveillance & Society 9, no. 4 (June 20, 2012): 394–407. http://dx.doi.org/10.24908/ss.v9i4.4343.
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This paper explores the tension between consumer power and surveillance through an analysis of group buying websites. These websites celebrate the power of the consumer generated through bulk purchases. Underlying the rhetoric about the autonomous consumer, however, is the systematic practice of buying, selling and reflecting consumer information. Through an examination of available promotional materials, websites and privacy policies, as well as interviews with representatives from group coupon companies, this article outlines a number of concerns surrounding the ways that digital surveillance techniques are being used, and have the potential to be used, to define consumer interests. The article argues that such practices are particularly problematic when they are couched in the rhetoric of consumer freedom and power. The article concludes by suggesting emerging industry trends, including industry consolidation and geolocation technology, which raise additional questions about how companies shape consumer behavior.
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Buyakova, N. V., V. P. Zakaryukin, A. V. Kryukov, and D. A. Seredkin. "Simulation of Electromagnetic Fields Generated by Overhead Power Lines and Railroad Traction Networks." Energy Systems Research, no. 2(14) (July 23, 2021): 70–88. http://dx.doi.org/10.38028/esr.2021.02.0007.
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The establishment of smart grids requires special attention to the safety of power industry facilities and the reduction in their negative impact on personnel and the environment. A significant factor of such an impact is the considerable intensities of electromagnetic field (EMF) generated by such facilities. In the context of power industry digitalization, the development of methods and tools for EMF digital simulation is needed to ensure the electromagnetic safety of the service personnel. Computer models designed to adequately determine the EMF generated by overhead power lines (OPL) can be implemented based on the methods and tools created to determine operating parameters of electric power systems in phase coordinates developed at Irkutsk State Transport University. The technique of electromagnetic safety analysis is implemented based on the proposed approach and has the following features: a systems approach, which is the possibility of simulating electromagnetic fields in terms of properties and characteristics of a complex electric power system; versatility, which allows simulating power lines and traction networks of various designs; appropriateness to the environment achieved by considering the profile of the underlying surface, underground utilities, and artificial structures of rail transport, such as galleries, bridges, and tunnels; comprehensiveness, which is provided by combining the computation of operating parameters and the determination of EMF intensities. The paper describes methods and algorithms developed to determine the intensities of electromagnetic fields generated by multi-conductor power lines at fundamental and higher harmonics frequencies. A technique for the EMF determination at the points of OPL orthogonal crossing is also presented.
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Singh, Gopal, Kuntal Mukherjee, Alok Kumar Singh, and Amar Nath Jha. "Fuzzy Decision Support System to Enhance Productivity in Indian Coal Mining Industry." Journal of Cases on Information Technology 19, no. 1 (January 2017): 50–59. http://dx.doi.org/10.4018/jcit.2017010105.
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Coal powers the Indian economy. Over 70% of the entire power generated in the country is coal based. Coal India produces over 84% of the entire country's coal. As coal mining is a capital intensive industry, it is important to maximize productivity. This paper explores how adoption of “Kayakalp” Model of e- governance in CCL, a subsidiary of Coal India, resulted in complete transformation of the company in terms of production and productivity. The fuzzy based decision support system has investigated this fact.
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Agbeboaye, C., F. O. Akpojedje, and B. I. Ogbe. "Effects of Erratic and Epileptic Electric Power Supply in Nigerian Telecommunication Industry: Causes and Solutions." Journal of Advances in Science and Engineering 2, no. 2 (December 2, 2019): 29–35. http://dx.doi.org/10.37121/jase.v2i2.61.
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The issue of erratic and epileptic power supply in Nigeria Electricity Company is as old as the country itself. This is not unconnected to some factors such as: inadequate power generated in the national grid, electric power losses in the distribution network, government instability and unstable power reform policies, to mention but a few. The effects of erratic and epileptic power supply have been a major challenge to every sector in Nigeria especially the telecommunication industry. The telecommunication industry plays a significant role in the growth and development of every nation. Hence, this paper aims at critically investigating the causes and effects of erratic and epileptic electric power supply in Nigerian telecommunication industry. More so, the paper suggested and recommended ways to curb and enhance the current erratic and epileptic power situation in the country in order to boost the productivity of telecommunication industry and other sectors as well.
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Braverman, V. Ya, and B. K. Ilienko. "CRYOGENIC ACCUMULATION OF ELECTRICITY GENERATED USING RENEWABLE ENERGY SOURCES." Energy Technologies & Resource Saving, no. 2 (June 20, 2021): 22–27. http://dx.doi.org/10.33070/etars.2.2021.02.
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Possibilities and prospects of accumulation of the electric power generated on objects of renewable energy sources - solar and wind power plants, with use of cryogenic liquids are considered. A comparison of the three most common ways of accumulating electricity: using lithium-ion batteries, hydrogen, liquid air. According to the proposed technology, the efficiency of recovery of electricity from liquid air is from 54 to 70%. The developed technology is based on cryogenic and thermal accumulation and has a high accumulation coefficient. It is shown that energy storage in cryogenic storage devices is the cheapest today. The proposed technology can also be used to generate electricity from liquefied natural gas using standard equipment developed by industry. The technological scheme of the cryoaccumulating station is offered. Bibl. 10, Fig. 1, Table 1.
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Boivin, Adrian B., and Jonathan F. Holzman. "Generated Value of Electricity Versus Incurred Cost for Solar Arrays under Conditions of High Solar Penetration." Solar 1, no. 1 (August 14, 2021): 4–29. http://dx.doi.org/10.3390/solar1010003.
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This work considers an emerging value-based paradigm for solar generation under high penetration, in light of its conflicting cycles of supply and demand. The resulting swings in electricity prices, in locales such as California, call into question the aim of optimizing solar arrays solely in terms of accumulated electrical power. Thus, this work studies solar arrays in terms of value, as an accumulated product of electrical power and price, where solar arrays that generate greater electrical power over more profitable early- and late-day hours yield improved value. Experimental, theoretical, and economic analyses are given to characterize the industry-standard angled-panel, an alternative V-groove, and a new U-groove array over a 5-year study. The trends and projections suggest that the industry-standard angled-panel array realizes the best value-based performance at present, although it will likely be outperformed in the foreseeable future by the V-groove array.
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Köse, E., A. Sauer, B. Thomas, T. Müller, S. Kölle, and P. Schwanzer. "Stromoptimierte KWK in der Galvanikbranche*/Power-optimized combined heat and power in the electroplating industry - Responding to increasing energy flexibility by residual energy adapted combined heat and power plants." wt Werkstattstechnik online 108, no. 07-08 (2018): 561–66. http://dx.doi.org/10.37544/1436-4980-2018-07-08-79.
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Das Thema Energieflexibilität und Anpassung der eigenerzeugten Energie an die Energieerzeugung aus regenerativen Energien gewinnt an Bedeutung. Regulierbare Eigenerzeugungsanlagen können zur Stabilisierung des Netzes einen enormen Beitrag leisten. Der Aufsatz zeigt, welchen Effekt der Einsatz von BHWK auf die Galvanikbranche hat und wie nicht nur die eigenen Energiekosten reduziert, sondern auch die Möglichkeit geschaffen wird, auf Signale der Energiewirtschaft zu reagieren, ohne die Energieversorgung zu unterbrechen. Energy flexibility and adaptation of self-generated energy to energy production from renewable energies is becoming more important. Adjustable distributed power plants can provide a huge impact on stabilizing the power grid. This article displays the effects of combined heat and power generation on the electroplating industry. It demonstrates how to reduce energy costs and also how to find ways to react to signals of the energy industry without interrupting the energy supply.
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Srichai, Chanaipong, Pongsun Bunditsakulchai, and Thitisak Boonpramote. "Analyzing impact of changing fuel-mix composition of Thailand power generation." E3S Web of Conferences 187 (2020): 03010. http://dx.doi.org/10.1051/e3sconf/202018703010.
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The energy industry is considered one of the important sectors for national economic development—especially the electricity generation industry then Thailand has developed a power development plan as the nation roadmap to ensure power security and reliability of the electricity system. In this study, we focus on the electricity generation industry and examine the impacts resulting from the changing composition of power generation type compare between Thailand’s Power Development Plan year 2015 and the year 2018. The scenario case 1 assuming that the electricity generation is generated from 37% of Natural Gas, 23% of Coal, and 50% other. When the changing fuel proportion by increasing Gas-fired power plant to 53% and decrease Coal-fired power plant and other to 12%, 35% accordingly in scenario case 2. As a result, Power Development Plan year 2018 is increase more the total output of the Thai economy than the Plan year 2015 cause to significantly benefit of the economy.
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Ani, Vincent Anayochukwu. "Simulation and Optimization of Photovoltaic/Diesel Hybrid System for Off-Grid Banking Industry." International Journal of Energy Optimization and Engineering 3, no. 2 (April 2014): 17–37. http://dx.doi.org/10.4018/ijeoe.2014040102.
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Power supply is one of the major problems of the banking industry of many emerging economies, such as Nigeria, particularly as the banks strive to modernize and offer quality services, such as electronic banking. This paper proposed a PV/Diesel hybrid power generation system suitable for banking. The study is based on simulation and optimization of hybrid system of a bank located in two different locations [Nsukka (Enugu State – which covers the southern part of the nation) and Kaura (Kaduna State – covering the northern part of the nation)]. The Hybrid Optimization Model for Electric Renewables (HOMER) software was used for the design of the proposed stand-alone PV/Diesel power system. A control system for the Hybrid PV-Diesel Energy System with Battery Storage was developed to coordinate when power should be generated by PV panels and when it should be generated by diesel generator. From the simulation results, 46% decrease in each pollutant is noticed in Nsukka for a 46% renewable penetration into the existing diesel only power system; while in Kaura, 55% decrease in each pollutant is noticed for a 55% renewable penetration into the existing diesel only power system. This shows that the more % of renewable penetration into the diesel only system, the more decrease in pollutant emission. The results also show that the two locations (Nsukka and Kaura) have the same excess electricity of 45kWh/yr showing that the system is optimally sized. This excess electricity of power supply is guaranteed in the location simulated in order to give room for future Bank expansion. This may also be applied to other regions of the country.
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Pandey, Shambhu Kumar. "Experimental Study on Installation of Solar Panel above Industrial Junction House." International Journal for Research in Applied Science and Engineering Technology 10, no. 7 (July 31, 2022): 3991–93. http://dx.doi.org/10.22214/ijraset.2022.45948.
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Abstract: For promoting Renewable Energy (RE) sources, Government (state and / or central) has set targets of Renewable Power called as RPO (Renewable Power Obligations) to be fulfilled by all obligated entities. Steel industry is also an obligated entity as it consumes power from its own captive sources. To meet the RPO set targets as per Odisha Electricity Regulatory Commission (OERC) Gazette circular (2015), obligated entities will be required to generate and consume RE power from solar source and non-solar renewable sources a fixed percentage of total annual consumption in kilowatt-hours (kWh) generated from captive power sources (CPP). In case, they are not able to meet this requirement, they have to purchase Renewable Energy Certificate (REC) as traded open in the Indian Energy Exchange (IEX) with floor price of solar REC, Rs. 3.5 per kWh.
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Zubakin, V. A. "STATE STIMULATION OF TRANSFORMATION OF POWER INDUSTRY." Strategic decisions and risk management 10, no. 4 (March 28, 2020): 320–29. http://dx.doi.org/10.17747/2618-947x-2019-4-320-329.
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Transition to digital technologies in management of power industry at all levels – an inevitable consequence of the technical progress which has generated opportunities for diversification, decarbonization and decentralization. Thus it is necessary to recognize that digitalization in power industry is NOT automation, and first of all creation of new business models, services and the markets with a support on possibility of digital economy. In this article questions of transformation of architecture of power industry, and also the main restrictions are considered: absence in regulatory base of new opportunities for consumers; general system inefficiency; impossibility “to legalize” appearance of new subjects (active consumers and prosumers, operators of micropower supply systems and aggregators of the distributed power objects, various service organizations), and also to deregulate the relations between them, to standardize interaction interfaces with EEC, to transform the energy markets.In article it is offered for transition to new digital power to make corresponding changes to the legislation: to enter new type of participants of the market (the active consumer, an active power complex), operated intellectual connection carrying out the standard with the electrical power system, completely responsible for management of the power supply and thus having the minimum regulatory restrictions on organizational model of the work; to improve rules of functioning of trade systems for creation of the markets of the distributed power providing an effective exchange of goods and services between traditional participants of the markets and participants of new type; to enter possibility of application of technologies of the coordinated management of the distributed sources and consumers of energy, systems of storage of energy, means of regulation of loading (“aggregators”) for the purpose of increase of efficiency of their use and participation in the electric power and power markets, including rendering system services and performance of other functions in these markets (the pilot project of such system is realized under the leadership of the author of the present article by subsidiary PAO “Lukoil” “Energy and gas of Romania”); to increase technological and economic flexibility of conditions on reliability and quality of power supply, creation of possibility of a choice by the consumer of conditions of power supply necessary for him and the account them in cost; to enter the accounting of the opportunities given by “new” decisions, at an assessment, formation and implementation of investment programs of the adjustable companies (including introduction of a technique of an assessment of investment projects at possession cost on all life cycle of the decision); to replace cross subsidizing of the population by industrial consumers with mechanisms of address social support and / or with system of restriction of volumes of consumption on reduced rates (“соцнорма”); to refuse further deployment of system of subsidizing of power supply of one regions at the expense of consumers of other regions (as it leads to growth of inefficient power consumption in the subsidized regions, not provided with available generation and infrastructure); to change norms of technical regulation, norms of design on the basis of new technologies; to make changes to programs of development of the infrastructure organizations of power industry taking into account trends of diversification, decentralization, decarbonization and a digitalization; to provide possibility of stimulation, including tariff, implementation of regional programs (pilot and regular), aimed at the complex development of power industry on the basis of new approaches, technologies and the practician, and also the hi-tech companies of small and medium business providing development.
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Yu, Huilu, Youning Yan, and Suocheng Dong. "A System Dynamics Model to Assess the Effectiveness of Governmental Support Policies for Renewable Electricity." Sustainability 11, no. 12 (June 21, 2019): 3426. http://dx.doi.org/10.3390/su11123426.
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China’s support policy for renewable electricity belongs to a feed-in tariffs scheme. With the rapid development of renewable electricity industries, this set of policies brought about a heavy fiscal burden for the government. The exploration of whether current support policy provided excessive subsidies for renewable electricity is of great practical significance. We hold an idea that the internalization of positive externality is the only criterion for the government to support the development of a renewable electricity industry. The problem of whether the current policy provides excessive subsidies for renewable electricity industry can be solved by assessing whether its positive externality is internalized, as renewable electricity industry has a characteristic of externality. Our study object is an assumed biomass power plant in Jingning County, Gansu Province. A system dynamics model was built. Applying the environmental cost accounting method and net present value analysis method, we connected the techno-economic analysis of the biomass power plant with the measurement of positive externality of biomass power generation together. In this system dynamics model, we developed an indicator to reveal whether the subsidies provided by governmental policies can compensate the positive externality generated by the assumed biomass power plant. This study mainly draws the following conclusions: Firstly, China’s current support policy does provide excessive subsidies for the renewable power industry. The subsidies received by biomass power plants from the government are higher than the positive externality generated by them; secondly, the positive externality measurement of the biomass power industry is influenced by many regional factors; thirdly, without governmental policy support, biomass power plants cannot compete with traditional power companies; fourthly, as biomass power generation is concerned, the current price subsidy intensity is about US$0.0132 higher per kWh than a reasonable level. Furthermore, the parameters frequently applied in the calculation of the prices of pollutant emission reduction in Chinese research papers are relatively small, which is only half of their actual values. Jingning County, situated in inland west-northern China, lacks typicality. There is a limitation in judging whether the government’s support policy for renewable electricity is reasonable through a feasibility analysis of investment in a biomass power generation project. This may be the main drawback of this study.
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Olinger, David J. "Underwater Power Kites." Mechanical Engineering 139, no. 06 (June 1, 2017): 38–43. http://dx.doi.org/10.1115/1.2017-jun-2.
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This article discusses different features of underwater kites and its advantages in the turbine industry. The underwater kite moves fastest when it slaloms through the current in this way, much like a water skier. Electricity generated by the mounted turbine generator is transmitted along the tether to a moored, floating buoy, and then onto the power grid. This concept, now known as the Tethered Undersea Kite (TUSK), was first conceived by Magnus Landberg, a researcher in Sweden, in 2007. Underwater kites look to be feasible to build using commercial available technology. According to economic analyses conducted by other research teams, TUSK systems may be able to produce electricity at about half the current cost for fixed hydrokinetic turbines, and a bit below the cost of the power produced by offshore wind turbines. Those researchers attribute the lower costs to improved power-to-weight ratios derived from replacing the inner blades and support tower of a traditional turbine with a lightweight, low-cost tether.
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Sheikh, Muhammad Usman, Boxuan Xie, Kalle Ruttik, Hüseyin Yiğitler, Riku Jäntti, and Jyri Hämäläinen. "Ultra-Low-Power Wide Range Backscatter Communication Using Cellular Generated Carrier." Sensors 21, no. 8 (April 10, 2021): 2663. http://dx.doi.org/10.3390/s21082663.
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With the popularization of Internet-of-things (IoT) and wireless communication systems, a diverse set of applications in smart cities are emerging to improve the city-life. These applications usually require a large coverage area and minimal operation and maintenance cost. To this end, the recently emerging backscatter communication (BC) is gaining interest in both industry and academia as a new communication paradigm that provides high energy efficient communications that may even work in a battery-less mode and, thus, it is well suited for smart city applications. However, the coverage of BC in urban area deployments is not available, and the feasibility of its utilization for smart city applications is not known. In this article, we present a comprehensive coverage study of a practical cellular carrier-based BC system for indoor and outdoor scenarios in a downtown area of a Helsinki city. In particular, we evaluate the coverage outage performance of different low-power and wide area technologies, i.e., long range (LoRa) backscatter, arrow band-Internet of Things (NB-IoT), and Bluetooth low energy (BLE) based BC at different frequencies of operation. To do so, we carry out a comprehensive campaign of simulations while using a sophisticated three-dimensional (3D) ray tracing (RT) tool, ITU outdoor model, and 3rd generation partnership project (3GPP) indoor hotspot model. This study also covers the energy harvesting aspects of backscatter device, and it highlights the importance of future backscatter devices with high energy harvesting efficiency. The simulation results and discussion provided in this article will be helpful in understanding the coverage aspects of practical backscatter communication system in a smart city environment.
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Qian, Wang, Mi Na, Yi Zenan, Sun Ming Yue, and Liu Qing. "Access Data Analysis Technology and Implementation of Electric Power Big Data Achievement Sharing Platform through Artificial Intelligence." Journal of Physics: Conference Series 2083, no. 3 (November 1, 2021): 032065. http://dx.doi.org/10.1088/1742-6596/2083/3/032065.
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Abstract With the rapid development of the information age, the data generated by all walks of life is showing an increasing trend of “blowout”. According to statistics, the total amount of data generated by mankind in the past 40,000 years is less than the total amount of data generated from 2010 to 2013 alone. The global big data reserves reached 8.61ZB in 2015 alone, and the growth of data in the future will reach an unpredictable value, entering the data age in an all-round way. Traditional power data computing technology and intelligent analysis technology are undergoing profound changes, and emerging big data intelligent analysis platforms are gradually emerging. With the in-depth development of power informatization and the concept of smart grid, the power industry data has grown exponentially, and the business demand for intelligent analysis of large amounts of power data is increasing day by day. Therefore, the access data analysis technology and realization of the power big data achievement sharing platform based on AI is of great significance. The AI-based power big data achievement sharing platform constructed in this article is a research on previous data analysis, and it aims to use the current cutting-edge artificial intelligence technology to build a scalable and highly available power big data analysis and processing platform to provide fast and reliable smart data services for the power industry, smart grid and other grid businesses. Research has shown that the overall availability of the ultrasonic partial discharge recognition system of the artificial intelligence-based electric power big data achievement sharing platform is 99.9967%, which meets the high availability index requirements, and verified that the artificial intelligence-based power big data achievement sharing platform provides highly available computing, storage and other services for its applications.
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Zaidi, Maryam Nabihah, and Adlan Ali. "Power Factor Improvement Using Automatic Power Factor Compensation (APFC) Device for Medical Industries in Malaysia." MATEC Web of Conferences 150 (2018): 01004. http://dx.doi.org/10.1051/matecconf/201815001004.
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This paper present the project designed to correcting power factor for medical industries in Malaysia automatically. Which with hope to make the cost and energy usage efficient, because the energy source are depleting due to increase in population. Power factor is the ratio of real power and apparent power. This definition is mathematically represented as kW/kVA where kW is active power and kVA is apparent power (active + reactive). Reactive power is the non-working power generated by the magnetic and inductive load to generate magnetic flux. The increase in reactive power increase the apparent power so the power factor will decrease. Low pF will cause the industry to meet high demand thus making it less efficient. The main aim of this project is to increasing the current power factor of medical industries from 0.85 to 0.90. Power factor compensation contribute to reduction in current-dependent losses and increase energy efficiency while expanding the reliability of planning for future energy network. As technology develops, the gradual cost and efficiency penalty should reduce. Therefore, automatic power factor compensation device should become cost-effective and smaller device over time. That is the reason this project is using programmable device as it is a miniature architecture device.
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Makarov, A. S., and I. M. Kosygina. "THE ACTUAL PROBLEMS OF THE HEAT POWER INDUSTRY OF UKRAINE AND THEIR SOLUTION." Energy Technologies & Resource Saving, no. 4 (December 20, 2019): 13–17. http://dx.doi.org/10.33070/etars.4.2019.02.
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The actual problems of the heat power industry of Ukraine have been analyzed. The technological scheme for the preparation of suspension fuel based on coal and liquid organic waste, with the addition of plasticizers and stabilizers has been proposed. The additives top up in suspensions to reduce viscosity and resistance ones, as well as to provide aggregative and sedimentation stability at high concentrations of solids in the systems. This technology makes possibility not only to utilize waste products containing organic substances, but also to reduce the amount of harmful substances generated during the combustion of various fuel types. Ref. 12, Fig. 1, Tab. 2.
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Jee, Hongsub, Yohan Noh, Minwoo Kim, and Jaehyeong Lee. "Comparing the Performance of Pivotless Tracking and Fixed-Type Floating Solar Power Systems." Applied Sciences 12, no. 24 (December 16, 2022): 12926. http://dx.doi.org/10.3390/app122412926.
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Floating solar power has a higher power generation efficiency than existing solar power generation methods. It is easier to secure in an installation area as well as to connect to other renewable energy sources. Floating solar power is considered an essential component for achieving carbon neutrality because it compensates for the shortcomings of existing solar power systems and maximizes their advantages. In this study, a performance comparison was conducted between pivotless tracking-type and fixed-type solar power systems. These systems were installed at the Irwol Reservoir in Suwon, South Korea, and monitored for comparison between May 2019 and June 2020. The tracking-type system generated approximately 14% more energy than the fixed-type system; the performance was maximized in May, which showed 25.63% more output power, and the performance was minimized in winter, with 3% more generated power. Owing to its pivotless structure, this system can be used in the solar industry.
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Rhee, Jaehoon, Alisher Dedahanov, and Dohyung Lee. "Relationships Among Power Distance, Collectivism, Punishment, and Acquiescent, Defensive, or Prosocial Silence." Social Behavior and Personality: an international journal 42, no. 5 (June 18, 2014): 705–20. http://dx.doi.org/10.2224/sbp.2014.42.5.705.
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We investigated the relationships among power distance, collectivism, punishment, and a multidimensional construct of silence. Participants were 628 full-time employees of 27 heavy-industry companies in South Korea. Confirmatory factor analysis and structural equation modeling were performed to test our hypothesized model. The results revealed that power distance induced acquiescent silence; however, power distance did not have any impact on defensive silence. Collectivism also generated acquiescent silence but did not influence prosocial silence; and punishment increased defensive silence.
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Watanakul, Narin. "Stand-Alone Photovoltaic Based on In-Phase Voltage Injection for Electroplating Industry Factory." Advanced Materials Research 853 (December 2013): 306–11. http://dx.doi.org/10.4028/www.scientific.net/amr.853.306.
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This paper presents an application of stand-alone Photovoltaic (PV) systems for AC/DC power conversion for electroplating systems. In these control systems, the external source voltage is generated from a PV stand-alone, the proposed voltage injected method by in phase controller into line input voltage secondary of power transformer. The electroplating process is a capacity 0-250A maximum output system with uses a 12-pulse diode rectifier, using a conventional 3-phase bridge 6-pulse diode rectifier. The process voltage control to electroplating, that performance of the proposed series voltage controller method (producing injected voltage), contribute to voltage control by injecting or absorbing active power, to electroplating. The advantage of this principle will result the system that can saving energy 50% and compensation 100 percent during a power outage. The experimental, and simulation results by MATLAB program are used as a guideline for analyzing and designing the parameters of electroplating system.
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Lim, Sang-Kil, Seong-Mi Park, Hyun-Rok Cha, and Sung-Jun Park. "A Study on the Improvement of Parallel Operation Characteristics of DC/DC Converter Using Improved Full-Duplex Communication Hardware." Applied Sciences 9, no. 24 (December 6, 2019): 5346. http://dx.doi.org/10.3390/app9245346.
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Recently, as dependence and demand for electricity are rapidly increasing in all areas, including industry, methods for increasing capacity and reliability through parallel operations have been studied. In general, Modbus communication method with RS485 is used as a method of parallel operation for capacity increase. However, this method has a disadvantage in that it is a half-duplex communication system that cannot transmit and receive at the same time. However, the Modbus communication method is a half-duplex communication system where physical transmission and reception cannot be performed simultaneously. Therefore, as the number of power converters performing parallel operation increases, the communication period increases, which affects the power quality due to the decrease in control speed. Therefore, in this paper, we propose a hardware that can achieve a full-duplex communication method by a communication signal level to improve power quality. The characteristic of the proposed communication hardware is that the transmitter generates two-level signals for data transmission, but the receiver generates three-level electrical signals according to the state of the transmission data generated by the receiver. The generated three-level electrical signal is characterized in that the data transmission signal information of the transmitter and the data transmission signal information of the receiver occur at the same time. As a result, the communication speed is reduced by more than twice, which improves the power quality by improving the control characteristics when performing parallel operation.
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Arifin, A., I. H. Al-Bahadly, and S. C. Mukhopadhyay. "Simulation of Switched Reluctance Generator in Low and Medium Speed Operations for Wind Energy Application." ISRN Renewable Energy 2012 (August 29, 2012): 1–13. http://dx.doi.org/10.5402/2012/327296.
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This paper provides a new approach to maximize the amount of power generated by the switched reluctance generator (SRG) in the low and medium speed operations. There are many control variables which affect the power generated such as: firing angles, reference current, speed and voltage. It will incur high costs and time consuming to modify the variables using experimental set up. Hence, to minimize time, cost and aid in the manufacturing industry, a simulation model of the overall SRG drive is developed. The objective of the work is to identify the optimal parameters and characterize them under closed loop control. The study indicates that there is an optimal voltage, firing angles and reference current at each speed range. Also, the percentage of the power generated can be categorized as a function of dwell angle and speed at optimal voltage level. The optimal dwell angle is determined using the least square method. Within the closed loop system, the high percentage of power generated can be maintained by adjusting the voltage level. It allows operation in single pulse mode as opposed to the conventional current chopping during the low and medium speed.
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Atchadé, Mintodê Nicodème, Melchior N’bouké, Aliou Moussa Djibril, Shabnam Shahzadi, Eslam Hussam, Ramy Aldallal, Huda M. Alshanbari, Ahmed M. Gemeay, and Abdal-Aziz H. El-Bagoury. "A New Power Topp–Leone distribution with applications to engineering and industry data." PLOS ONE 18, no. 1 (January 17, 2023): e0278225. http://dx.doi.org/10.1371/journal.pone.0278225.
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We introduced a brand-new member of the family that is going to be referred to as the New Power Topp-Leone Generated (NPTL-G). This new member is one of a kind. Given the major functions that created this new member, important mathematical aspects are discussed in as much detail as possible. We derived some functions for the new one, included the Rényi entropy, the qf, series development, and moment weighted probabilities. Moreover, to estimate the values of the parameters of our model that were not known, we employed the maximum likelihood technique. In addition, two actual datasets from the real world were investigated in order to bring attention to the possible applications of this novel distribution. This new model performs better than three key rivals based on the measurements that were collected.
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Xia, Jun, Yonggui Wang, Ya (Lisa) Lin, Haibin Yang, and Sali Li. "Alliance Formation in the Midst of Market and Network: Insights From Resource Dependence and Network Perspectives." Journal of Management 44, no. 5 (March 2, 2016): 1899–925. http://dx.doi.org/10.1177/0149206316630379.
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Alliances are often formed as a response to challenges from both market and social forces. Although the resource dependence logic posits that firms enter into alliances to stabilize resource flows between different markets and also to increase market power in their primary industry, it remains unclear whether the social power of firms, generated from alliance networks, may motivate firms to respond differently to the dependence logic of alliance formation. By incorporating social network theory, we argue that a firm’s social network advantages in the primary industry may serve as critical contingency conditions of the dependence logic. Analyses of firms in the U.S. computer industry from 1994 to 2007 suggest that a firm’s centrality advantage marginally reduces the positive effects of market dependencies on alliance formation, whereas a firm’s brokerage advantage enhances the market dependence effect.
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Shirkey, Gabriela, Megan Belongeay, Susie Wu, Xiaoguang Ma, Hassan Tavakol, Annick Anctil, Sandra Marquette-Pyatt, et al. "An Environmental and Societal Analysis of the US Electrical Energy Industry Based on the Water–Energy Nexus." Energies 14, no. 9 (May 4, 2021): 2633. http://dx.doi.org/10.3390/en14092633.
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To meet rising energy demands, power plant operations will expand, influencing the interactions between the water–energy nexus and society. However, a major challenge is integration of social dimensions within electricity generation. To address this, we generate a baseline dataset using US public data (2014–2019) from the Energy Information Administration and US Bureau of Labor Statistics. We identify the rate of energy consumed, CO2, SO2 and NOx emissions generated, and water used per MWh net electricity as well as employee wellbeing per unit MW capacity during electricity generation. Rates of energy consumption (MMBtu/MWh) decreased 4.9%, but water consumption and withdrawal (m3/MWh) both increased 0.93% and 0.31%, respectively. Emissions of CO2, SO2 and NOx decreased 22.64%, 75% and 25% MT/MWh, respectively. Thermoelectric cooling withdrawal and consumption is led by natural gas (50.07%, 38.31%), coal (29.61%, 25.07%), and nuclear energies (13.55%, 18.99%). Electric power generation contributes 0.06 injuries–illnesses/TWh and 0.001 fatalities/TWh, of which fossil fuels contributed 70% and 15%, respectively. Fossil fuels led in average annual employment (0.02 employees/MW) with low cost salaries (USD 0.09/MW) likely due to high collective capacity, which is declining. Estimated rates in this study and framework will aid power industry transition and operational decision makers.
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Nigmatulin, B., and M. Saltanov. "Problem of Excess Electricity and Capacity due to the Commissioning of the Astravets Nuclear Power Plant." Energy Systems Research, no. 4(12) (February 1, 2021): 54–68. http://dx.doi.org/10.38028/esr.2020.04.0007.
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The paper presents a review and analysis of sales and marketing opportunities for the electricity generated by the Astravets Nuclear Power Plant (NPP) in terms of sales destinations (domestic market, export to Europe and Russia). The study comprehensively scrutinizes the issues of competitiveness of the electricity generated by the Astravets NPP and parameters of its production cost, price, and repayment of investment. We address the economic, technological, and political risks of electricity sales, along with the standpoints of the leadership of the industry and those of academic and public organizations. A range of possible scenarios for the development of the situation is analyzed.
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Gazdič, Dominik. "Industrial Resources for the Production of Sulphate Binders." Advanced Materials Research 897 (February 2014): 53–56. http://dx.doi.org/10.4028/www.scientific.net/amr.897.53.
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The territory of our country is very poor in natural resources of gypsum and the natural resource of anhydrite is missing completely. A considerable amount of gypsum is produced in the country as a secondary raw material originating during the desulphurization of flue gases in thermal power plants using limestone washing and in the chemical industry. This paper describes the different types of industrially generated gypsum, the production technology, and its potential use in the construction industry.
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Zhang, Jinwei, Markus Pӧtzlberger, Qing Wang, Jonathan Brons, Marcus Seidel, Dominik Bauer, Dirk Sutter, et al. "Distributed Kerr Lens Mode-Locked Yb:YAG Thin-Disk Oscillator." Ultrafast Science 2022 (January 4, 2022): 1–8. http://dx.doi.org/10.34133/2022/9837892.
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Ultrafast laser oscillators are indispensable tools for diverse applications in scientific research and industry. When the phases of the longitudinal laser cavity modes are locked, pulses as short as a few femtoseconds can be generated. As most high-power oscillators are based on narrow-bandwidth materials, the achievable duration for high-power output is usually limited. Here, we present a distributed Kerr lens mode-locked Yb:YAG thin-disk oscillator which generates sub-50 fs pulses with spectral widths far broader than the emission bandwidth of the gain medium at full width at half maximum. Simulations were also carried out, indicating good qualitative agreement with the experimental results. Our proof-of-concept study shows that this new mode-locking technique is pulse energy and average power scalable and applicable to other types of gain media, which may lead to new records in the generation of ultrashort pulses.
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Verma, Deepak Sheshbadan, Sumit Satish Pai, and Krishna Nagendra Vishwakarma. "Implementation of IoT-Based Generator Management System Using GPy." International Journal of Electronics, Communications, and Measurement Engineering 10, no. 1 (January 2021): 33–49. http://dx.doi.org/10.4018/ijecme.2021010103.
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In the era of digital devices, many industries still use traditional methods of pen and paper to maintain records. One such industry is the diesel generator industry where these generators are operated without any proper supervision. The current management of these generator vans is highly unorganized. This causes a lot of miscommunication between the owners and the customers. The idea focuses on monitoring the different parameters of a diesel generator using internet-connected sensors. Parameters such as fuel consumption, AC power ON time, RPM of the turbine, and temperature are measured in real time. The system helps the owners to monitor their generators vans through one mobile application rather than depending on the on-site operators. Both the owners and customers can see how much power was consumed and how their bill was generated. Rather than using pen and paper to maintain records in the current method, the new system completely transforms the old methods into a highly digitalized modern business.
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V. Janahiraman, Tiagrajah, and Muhammad Hazwan Harun. "Power Quality Disturbances Classification using Discrete Wavelet Transform and Support Vector Machine." International Journal of Engineering & Technology 7, no. 4.35 (November 30, 2018): 939. http://dx.doi.org/10.14419/ijet.v7i4.35.28298.
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Power utility providers and power industry service providers face a significant challenge in identifying the type of Power Quality Disturbances (PQD) automatically. This paper discusses a method to classify PQD using signal decomposition, statistical analysis and machine learning. Firstly, Discrete Wavelet Transform (DWT) is applied on the generated PQD signals to decompose the signal to obtain its representation in time and frequency domain. Secondly, first and second order statistical parameters are computed on the selected sub-band of DWT. These parameters are used as features vector for the machine learning based classifier. Our database consists of 2400 generated signals of PQD, which were divided into train and test set. Another set of noise corrupted signal database was generated to evaluate the capability of the system. SVM using quadratic kernel was selected as the classifier of the Power Quality Disturbances feature vector. Comparisons were also made with other types of classifiers and other types of mother wavelet filter functions. The results show that the combination of DWT and SVM managed to classify Power Quality Disturbances with high accuracy and has a strong resistance towards noise.
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Klugmann-Radziemska, Ewa, and Małgorzata Rudnicka. "Energy Yield Generated by a Small Building Integrated Photovoltaic Installation." Ecological Chemistry and Engineering S 27, no. 3 (September 1, 2020): 335–46. http://dx.doi.org/10.2478/eces-2020-0021.
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AbstractIn the recent years photovoltaic (PV) industry has experienced a major growth, caused by the ever present annual decrease in module production prices and the expanding awareness of the general public in terms of renewable energy. There are numerous ways to implement PV modules as an additional energy source for a building, be it mounted on the rooftop, or building integrated (BIPV). An analysis of BIPV consisting of 8 modules with the power of 250 Wp each was carried out for the building of the Chemistry Faculty of Gdansk University of Technology (GUT). It included monthly irradiance and energy generation values and compared them to data obtained by the means of PV-GIS system, after inserting site specific coordinates. Additional research on the same type of a single module with the power of 270 Wp was conducted to provide more insight in this matter. A comprehensible analysis allows for defining a final conclusion for the decrease in energy yield for GUT BIPV installation. Data outputs are lower than expected based on PV-GIS values, as for the most time the facade mounted PV system experiences partial soft shading from the nearby park. Furthermore, it is not located directly facing south, but rather south-east which does not prompt ideal working conditions.
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Fahad Alzadjali, Fatma. "POWER GENERATION USING WASTE MATERIALS BASED IOT APPROACH." International Journal of Engineering Applied Sciences and Technology 7, no. 2 (June 1, 2022): 172–76. http://dx.doi.org/10.33564/ijeast.2022.v07i02.026.
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Every developing country relies heavily on electricity. To meet the increased demand for electricity, many types of power plants are being created. The supplydemand imbalance is widening as natural resources are depleted. Power generation from industrial waste is critical for addressing the energy problem. This is one of the other solutions to the problem. This document was created as a solution and approach for generating power from solid waste materials (SWM). It plans to develop electrical energy power from Municipal Solid Waste Materials, transform that low electrical energy into higher electrical energy power, and charge mobile phones with the generated electricity. This article and its findings will be beneficial to the renewable energy industry.
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Salman, Salman. "Development of a Prototype Renewable Energy System and its Modification to Suit Middle East Applications." Iraqi Journal for Electrical and Electronic Engineering 7, no. 1 (June 1, 2011): 55–59. http://dx.doi.org/10.37917/ijeee.7.1.10.
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This paper concerns with exploitation of renewable energy sources for meeting energy requirements of remote locations. It presents an investigation which is based on a practical project that was executed in collaboration between academia and industry. It involves design and installation of a prototype integrated renewable energy system which consists of two 15 kW wind turbines, electrolyser, fuel cell system (FCS) and the associated control equipment. It was installed at the furthest island of Shetland, North of Scotland, U.K. The philosophy used in designing this system is summarised as follows: During times of high wind, the electricity generated by wind turbines is normally greater than that required by site electrical load. The excessive amount of generated electricity is stored into Hydrogen by utilising an electrolyser which is then used to generate the deficient electric power by the FCS at times of low wind.
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Myers, Taylor, Lars Schoebitz, Stuart Woolley, Jaime Sanchez Ferragut, Jimmy Thostenson, Kathy Jooss, Jeffery Piascik, et al. "Towards an off-grid fecal sludge treatment unit: demonstrating energy positive thermal treatment." Gates Open Research 3 (April 10, 2019): 1176. http://dx.doi.org/10.12688/gatesopenres.12929.1.
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Background: There is an unmet demand for community-scale fecal sludge treatment units (FSTUs) that serve communities of between 1,000 and 50,000 people and are able to operate in non-sewered and off-grid environments. An emerging industry standard for FSTUs includes as a key criteria energy independence in steady-state. Theoretically, there is sufficient thermal energy available in fecal sludge to provide the electrical power needed to run the FSTU. However, such a system had never been implemented. Methods: Biomass Controls has previously demonstrated the thermal treatment of fecal sludge using the Biogenic Refinery, a thermal FSTU deployed in three sites in India. In this article we describe testing where a Biogenic Refinery was paired with a thermal fluid heat exchanger and organic Rankine cycle generator to generate electrical power. Results: This Biogenic Refinery combined heat and power system generated sufficient electrical power to offset electrical parasitic loads in steady-state operation and produce a surplus of 1.2 kWe. Conclusions: The results of the study demonstrate that there is an excess of energy available and reliable mechanisms to generate electrical energy using an FSTU. Additional steps are necessary to transition to a true off-grid FSTU.
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Li, Yanfeng, Yongping Li, Guohe Huang, and Rubing Zheng. "Inter-Provincial Electricity Trading and Its Effects on Carbon Emissions from the Power Industry." Energies 15, no. 10 (May 14, 2022): 3601. http://dx.doi.org/10.3390/en15103601.
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Electricity trading is an effective measure to minimize carbon emissions and alleviate the imbalance between reverse distribution of regional energy resources and power load. However, the effects of China’s electricity trading on carbon emissions have not been fully explored due to lack of complete and balanced inter-provincial power transmission data. Therefore, the electricity generation–consumption downscaling model, logarithmic mean Divisia index (LMDI) model, and random forest clustering algorithm within a general framework were used in the present study to explore the effect of electricity trading on level of carbon emissions. Comprehensive inter-provincial electricity transmission data were generated, driving factors including electricity imports and exports were decomposed at the national and provincial scales, and clustered provincial policy implications were evaluated. The results revealed that: (i) although economic activities were the main driving factor for increase in carbon emissions at the national level, 382.95 million tons carbon emissions were offset from 2005 to 2019 due to inter-provincial electricity importation, whereas electricity export increased carbon emission by 230.30 million tons; (ii) analysis at the provincial level showed that electricity exports from Sichuan and Yunnan provinces accounted for more than 20% of the nation’s total electricity flow. Notably, this high level of exports did not significantly increase carbon emissions in these provinces owing to the abundant hydropower resources; (iii) emission reductions were only observed at the national level if the carbon intensity of the exporting provinces was lower compared with that of importing provinces, or if the electricity trading was generated from renewable sources; (iv) the effect of electricity import on emissions reduction was markedly higher relative to the effect of electricity export in most provinces, which reflected the actual situation of sustaining optimization of electricity generation structure in provincial grids of China. These findings provide a basis for decision makers to understand the contributions of electricity trading to the changes in carbon emissions from electricity generation, as well as form a foundation to explore practicable carbon emission mitigation strategies in the power industry.
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Liu, Huifang, Shijie Wang, Yu Zhang, and Wenguo Wang. "Study on the giant magnetostrictive vibration-power generation method for battery-less tire pressure monitoring system." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 229, no. 9 (August 3, 2014): 1639–51. http://dx.doi.org/10.1177/0954406214545821.
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At present, the most convenient and effective method for ensuring air pressure inside automobile tires being kept in normal state is using a tire pressure monitoring system to monitor the tire’s interior pressure and temperature in real time. Aiming at the power supply problem of direct tire pressure monitoring system in automobile industry commonly, a new giant magnetostrictive vibration-power generation technology which generates electricity through collecting vibration energy in automobile is proposed. Based on the coupling effect of inverse magnetostrictive effect and Faraday electromagnetic effect, a power generation device prototype which uses giant magnetostrictive material as the core element is developed. It may be a prototype of giant magnetostrictive vibration-power generation module used to provide electricity to tire pressure monitoring system instead of button battery power supply mode. In order to accurately describe the relationship between vibration force (stress) and output voltage in the giant magnetostrictive vibration-power generation process, a mathematical model is established from the essence of inverse magnetostrictive effect. According to energy conversion process generated in the process of power generation using giant magnetostrictive material, the modeling process is divided into two parts. Moreover, in order to derive the energy conversion efficiency of giant magnetostrictive vibration-power generation device, a computing method of power generation efficiency is proposed. Experiment results show that the model can accurately describe the relationship between vibration force (stress) and output voltage. Amplitude of the output voltage generated by giant magnetostrictive vibration-power generator is proportional to the amplitude or frequency of vibration force approximately. For the giant magnetostrictive vibration-power generation prototype developed in this paper, its energy conversion efficiency reaches 32.6%. Research result provides an effective method for solving the power supply issue of tire pressure monitoring system. It plays a certain promoting role for the realization of battery-less tire pressure monitoring system.
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Loosemore, Martin. "Impediments to Reform in the Australian Building and Construction Industry." Construction Economics and Building 3, no. 2 (November 18, 2012): 1–8. http://dx.doi.org/10.5130/ajceb.v3i2.2913.
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The Cole Royal Commission into the Construction andBuilding Industry has generated heated debate, makingrecommendations that go to the heart of establishedcultures, power structures and management practices.While the Cole Report had a difficult birth, theimplementation of the reforms is likely to be more painful.Unlocking the untapped productive potential, which Coleargues exists, will depend upon addressing the manyimpediments to reform that exist in the construction andbuilding industry. This paper explores these impediments,suggesting a number of strategies to overcome them at aproject, company and government level. It concludes thatunless there is a fundamental shift in the established powerstructures and relationships within the industry, change islikely to be hard won.
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Lim, Su-Chang, Jun-Ho Huh, Seok-Hoon Hong, Chul-Young Park, and Jong-Chan Kim. "Solar Power Forecasting Using CNN-LSTM Hybrid Model." Energies 15, no. 21 (November 4, 2022): 8233. http://dx.doi.org/10.3390/en15218233.
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Photovoltaic (PV) technology converts solar energy into electrical energy, and the PV industry is an essential renewable energy industry. However, the amount of power generated through PV systems is closely related to unpredictable and uncontrollable environmental factors such as solar radiation, temperature, humidity, cloud cover, and wind speed. Particularly, changes in temperature and solar radiation can substantially affect power generation, causing a sudden surplus or reduction in the power output. Nevertheless, accurately predicting the energy produced by PV power generation systems is crucial. This paper proposes a hybrid model comprising a convolutional neural network (CNN) and long short-term memory (LSTM) for stable power generation forecasting. The CNN classifies weather conditions, while the LSTM learns power generation patterns based on the weather conditions. The proposed model was trained and tested using the PV power output data from a power plant in Busan, Korea. Quantitative and qualitative evaluations were performed to verify the performance of the model. The proposed model achieved a mean absolute percentage error of 4.58 on a sunny day and 7.06 on a cloudy day in the quantitative evaluation. The experimental results suggest that precise power generation forecasting is possible using the proposed model according to instantaneous changes in power generation patterns. Moreover, the proposed model can help optimize PV power plant operations.
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Smyksy, K., R. Wrona, M. Brzeziński, and E. Ziółkowski. "Analysis and Assessment of Measurements Results of Electric Power Demand in a Model Vacuum-assisted Moulding Installation." Archives of Foundry Engineering 12, no. 4 (December 1, 2012): 135–40. http://dx.doi.org/10.2478/v10266-012-0121-y.
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Abstract In this article the main problems related with the proper choice of the design and operation parameters of vacuum installation in vacuum moulding system have been discussed. In such system a vacuum are generated using electric-driven vacuum pumps. The aim of the experiment is to evaluate the performance of a vacuum system basing on registered plots of selected electric power parameters of the power-supplying system of the pumps with parallel measurements instantaneous values of pressure in selected points of model stand. The measurements system for power-supply unit has incorporated the recorders of instantaneous current and voltage values. Following the suitable numerical procedure, the experimental data are analysed to yield mathematical relationships between the variations of the generated vacuum pressure levels and variations of selected electric power parameters. According to the authors, the applied measurements system of the parameters of a vacuum-assisted installation may become an effective and easy practical method of evaluating the performance of such installations, used also in industry.
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Eruotor, F. O., and M. O. Eruotor. "PREVENTING AND MINIMIZING ARC FLASH RISK IN POWER SYSTEM NETWORK." International Journal of Advanced Research 10, no. 12 (December 31, 2022): 1123–36. http://dx.doi.org/10.21474/ijar01/15949.
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Arc flash events have resulted in several accidents due to faults in electrical equipment that lead to a significant release of energy. This event is a hazard and threat to the Power System Security and due to the large energy release, plasma is generated, as pressure increases since it causes physical damage to equipment while life of system operators within the vicinity of its occurrence are at risk. Although arc flash is one of the electrical safety programs that have been in existence, arc flash hazard was not adequately addressed until recently. However, the Electric Arc phenomenon is relatively new in the Nigerian power industry, there are certain aspect that are yet to be treated by the available literature, hence it is the duty of this work to establish model for addressing the observed lapses. The design is adequately prepared for the power system security analysis using typical scenarios in industrial facilities that are prone to yield high incident energy levels. In line with the foregoing, the developed methodology is validated using a segment of the Nigerias power industry as case study.
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Liu, Peng-Fei, Qun-tai Shen, and Qiu-feng Chen. "Optimization of Power Plant Generating Capacity Scheduling Based On Markov Model." Open Electrical & Electronic Engineering Journal 9, no. 1 (November 11, 2015): 610–16. http://dx.doi.org/10.2174/1874129001509010610.
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In this paper, we introduced the basic principles of energy saving generation dispatching, generated sorting table and implementation processes, implemented energy-saving generation dispatching optimal electric power industry structure and layout. From the terms of the pilot provinces, energy-saving generation dispatching pilots achieved remarkable results. The article proposed full process energy power scheduling of new concept which covered annual, monthly, recently and real-time full process of energy power scheduling. We established monthly plans range within optimization boot way and improved boot unit load rate through reasonable arrangements, and then designed annual, monthly, recently and real-time energy power scheduling plans. The article also researched coordination and convergence of power plans.
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Komolafe, O. M., and K. M. Udofia. "Review of electrical energy losses in Nigeria." Nigerian Journal of Technology 39, no. 1 (April 3, 2020): 246–54. http://dx.doi.org/10.4314/njt.v39i1.28.
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The Nigerian electric power sector holds a lot of unfulfilled potentials for the economic development of Africa’s most populous country; the electric energy generated is not up to 30% of the national demand and worse still, over 50% of this paltry sum is recorded as losses—this is not indicative of commercial viability. The visible efforts being made to address the problems, though laudable, do not fully demonstrate complete appreciation of the underlying root causes. In this paper, an examination of the structure of the Nigerian electricity industry is provided followed by a technical review of factors responsible for the excessive losses (technical and non-technical) in the system. The solutions proffered would enable improved response, first to efficiently manage the available energy and also to grow the industry for the good of the nation.
Keywords: Nigerian power distribution system, electric energy theft, power losses in Nigeria.
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Lee, Chien Li, Cheng-Hsien Tsai, and Chih-Ju G. Jou. "Energy and Resource Utilization of Refining Industry Oil Sludge by Microwave Treatment." Sustainability 12, no. 17 (August 24, 2020): 6862. http://dx.doi.org/10.3390/su12176862.
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The oily sludge from crude oil contains hazardous BTEX (benzene, toluene, ethylbenzene, xylene) found in the bottom sediment of the crude oil tank in the petroleum refining plant. This study uses microwave treatment of the oily sludge to remove BTEX by utilizing the heat energy generated by the microwave. The results show that when the oily sludge sample was treated for 60 s under microwave power from 200 to 300 W, the electric field energy absorbed by the sample increased from 0.17 to 0.31 V/m and the temperature at the center of the sludge sample increased from 66.5 °C to 96.5 °C. In addition, when the oily sludge was treated for 900 s under microwave power 300 W, the removal rates were 98.5% for benzene, 62.8% for toluene, 51.6% for ethylbenzene, and 29.9% for xylene. Meanwhile, the highest recovery rates of light volatile hydrocarbons in sludge reached 71.9% for C3, 71.3% for C4, 71.0% for C5, and 78.2% for C6.
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Carpenter, Chris. "Study Assesses Potential of Renewable Energy in Power Sector." Journal of Petroleum Technology 73, no. 07 (July 1, 2021): 65–66. http://dx.doi.org/10.2118/0721-0065-jpt.
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This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper IPTC 21348, “The Color of Energy: The Competition To Be the Energy of the Future,” by Hon Chung Lau, National University of Singapore, prepared for the 2021 International Petroleum Technology Conference, held virtually 23 March–1 April. The paper has not been peer reviewed. Copyright 2021 International Petroleum Technology Conference. Reproduced by permission. The author of the complete paper, for the purposes of this study, characterizes energies as brown, blue, or green. Brown energies are carbon dioxide (CO2)-emitting fossil fuels, such as gas, oil, or coal. Blue energies use carbon capture and storage (CCUS) technologies to remove the emitted CO2 from brown energies. Green energies are zero- or low-CO2-emitting renewable energies. By analyzing the CO2 intensity and levelized cost of energy of energy carriers of different colors, the author shows that renewable energies are best used in replacing fossil fuels in the power sector, where they have the greatest effect in reducing CO2 emission. Overview By 2017, only 11% of the world’s final consumption came from renewable energies, 85% came from fossil fuel, and 4% came from nuclear energy. Energy consumption can be divided into three sectors: power, transport, and thermal. At the time of writing, 26.4% of global power (electricity) consumption comes from renewable energies. In this sphere, renewable energies are making the most significant contribution in reducing CO2 emission. Forty-one percent of CO2 emission comes from electricity and heat, 21% from transport, and 21% from industry. Consequently, the key to global decarbonization is to decarbonize these three sectors. Green Energy Is Preferred Green energies consist of six major types: solar photovoltaic, solar thermal, wind, hydroelectricity, geothermal, and biomass. If 1 kWh of electricity generated by renewable energy (with the exception of biomass) is used to replace 1 kWh of electricity generated by fossil fuel, the net CO2 savings will amount to 0.8, 0.6, and 0.4 kg for replacing coal, oil, and natural gas, respectively. However, if 1 kWh of renewable electricity is used to generate green hydrogen (H2), which is then used for heat generation in industry, it will yield roughly 0.8 kWh of thermal energy, which replaces the same amount of thermal energy by natural gas. This amounts to a CO2 savings of only 0.16 kg CO2/kWh. Consequently, renewable power has the highest CO2 savings effect if it is used to replace fossil fuel for power generation rather than to replace fossil fuel for heat generation. Decarbonizing the Power Sector The power sector is easiest to decarbonize. The three methods foreseen to decarbonize the power sector are nuclear power, blue electricity generated by fossil-fuel power plants equipped with CCUS, and green electricity produced by renewables. The use of nuclear power plants is a country-specific issue. The dual challenge of nuclear plant safety and nuclear waste storage is a key sustainability issue. Recently, interest has been renewed in the idea of increasing investment in nuclear energy for decarbonizing the power sector. It is noteworthy that the countries for whom more than a quarter of their power generation is provided by nuclear energy are all in Europe.
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Lunev, Aleksandr A. "Mechanical strength of slag crushed stone generated at coal-fired thermal power plants." Vestnik MGSU, no. 7 (July 2020): 968–79. http://dx.doi.org/10.22227/1997-0935.2020.7.968-979.
Full textAbstract:
Introduction. Production waste is used in the construction industry worldwide as it helps to cover a considerable portion of the industry’s demand for building materials. Coarse-grained slag deposits (slag crushed stone and sand), formed in the slag washout zone, have more potential for application than other ash and slag mixtures (coarse ASM), but they need more research. Mechanical properties of the slag crushed stone (coarse-grained ASM), formed in the course of coal combustion at Kansk-Achinsk, Kuznetsk coal deposits (in boilers equipped with liquid and dry slag removal facilities) and the application of the slag crushed stone in roadbuilding are considered.
Materials and methods. In the course of the research, the crushability and the deformation modulus of particular fractions of slag crushed stone samples (in dry and water-saturated conditions) taken from the dumps of Novosibirsk TPP-3 (that consumes the coal of the Kansk-Achinsk coal mining field) and from Novosibirsk TPP-2 and Seversk TPP (that consume the coal of the Kuznetsk coal mining field) were identified. To assess the factors influencing the mechanical strength of the slag crushed stone, ignition losses, the content of flaky and acicular particles, dust and clay particles and clay lumps was made.
Results. The difference in the mechanical strength of samples having different genesis was identified. The graphs obtained in the course of testing were assessed and deformability characteristics were calculated (for materials having different fineness values). The factors influencing the mechanical strength of slag crushed stone were determined. Dependencies between deformation parameters and crushability of the slag crushed stone were obtained.
Conclusions. Some mechanical and physical parameters of the slag crushed stone were identified; they were applied to outline potential areas of the slag crushed stone application in road building. The mathematical relationship needed to project the deformation modulus of the slag crushed stone was identified. This relationship will be used to design structures to be made of this material.
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Wang, Enci, Jianyun Nie, and Yuhan Wang. "Government Subsidy Strategies for the New Energy Vehicle Power Battery Recycling Industry." Sustainability 15, no. 3 (January 22, 2023): 2090. http://dx.doi.org/10.3390/su15032090.
Full textAbstract:
The rapid development of the new energy vehicle industry is an essential part of reducing CO2 emissions in the transportation sector and achieving carbon peaking and carbon neutrality goals. This vigorous development of the new energy vehicle industry has generated many end-of-life power batteries that cannot be recycled and reused, which has brought serious consequences for the environment. In order to solve the negative externality problem brought by EoL power batteries, how the government intervenes in the development of the market and guides multiple parties to cooperate in recycling EoL power batteries is a question worthy of deep consideration. In this paper, we consider that the government acts before recycling companies and consumers, and recycling companies and consumers act again according to the policy. First, we examine an evolutionary game model of recycling companies and consumers in the absence of the government and explore their choice strategies in various scenarios. Second, we examine how government subsidies to recycling companies and consumers may change the trend toward positive recycling in different circumstances. This paper compares the effects of government policies on subsidies to recycling companies, subsidies to consumers, and subsidies to recycling companies and consumers. Finally, the paper proposes policy suggestions from the perspectives of the government, recycling companies, and consumers. The conclusion suggests that the market does not guarantee a high return for both parties without government subsidies. It is difficult for recyclers and consumers to cooperate proactively in recycling end-of-life power batteries. Thus, it is found that government subsidies to recycling companies and consumers can maximize social welfare at the lowest government cost. Even though government subsidies are currently targeted at recycling companies, they should gradually be extended to consumers as the industry develops.