A system of wireless transmission of electric energy with the selection of resonant capacitances

2016 ◽  
Author(s):  
Milena Kurzawa ◽  
Wieslaw Lyskawinski ◽  
Rafal M. Wojciechowski
Keyword(s):  
Electric Energy ◽  
Wireless Transmission ◽  
Selection Of

Implementasi Voip Server Berbasis IPV6 Dengan Raspberry PI

2019 ◽  
Vol 9 (01) ◽  
pp. 47-54
Author(s):  
Rabbai San Arif ◽  
Yuli Fitrisia ◽  
Agus Urip Ari Wibowo
Keyword(s):  
Internet Protocol ◽  
Wireless Transmission ◽  
Raspberry Pi ◽  
Test Results ◽  
Average Delay ◽  
Ipv6 Network ◽  
Ip Network ◽  
Selection Of ◽  
Better Than

Voice over Internet Protocol (VoIP) is a telecommunications technology that is able to pass the communication service in Internet Protocol networks so as to allow communicating between users in an IP network. However VoIP technology still has weakness in the Quality of Service (QoS). VOPI weaknesses is affected by the selection of the physical servers used. In this research, VoIP is configured on Linux operating system with Asterisk as VoIP application server and integrated on a Raspberry Pi by using wired and wireless network as the transmission medium. Because of depletion of IPv4 capacity that can be used on the network, it needs to be applied to VoIP system using the IPv6 network protocol with supports devices. The test results by using a wired transmission medium that has obtained are the average delay is 117.851 ms, jitter is 5.796 ms, packet loss is 0.38%, throughput is 962.861 kbps, 8.33% of CPU usage and 59.33% of memory usage. The analysis shows that the wired transmission media is better than the wireless transmission media and wireless-wired.

Variable-Frequency Prony Method in the Analysis of Electrical Power Quality

2012 ◽  
Vol 19 (1) ◽  
pp. 39-48 ◽  
Author(s):  
Jarosław Zygarlicki ◽  
Janusz Mroczka
Keyword(s):  
Least Squares ◽  
Power Quality ◽  
Electrical Power ◽  
Electric Energy ◽  
Variable Frequency ◽  
Prony Method ◽  
Analysis Window ◽  
Proposed Modification ◽  
Selection Of

Variable-Frequency Prony Method in the Analysis of Electrical Power QualityThe article presents a new modification of the the least squares Prony method. The so-called variable-frequency Prony method can be a useful tool for estimating parameters of sinusoidal components, which, in the analyzed signal, are characterized by time-dependent frequencies. The authors propose use of the presented method for testing the quality of electric energy. It allows observation of phenomena which, when using traditional methods, are averaged in the analysis window. The proposed modification of least squares Prony method is based on introduction and specific selection of a frequency matrix. This matrix represents frequencies of estimated components and their variability in time.

Comparative analysis of straight grate machines and combined facilities grate-tubetype kiln-cooler for selection technologies of pellets production

2021 ◽  
Vol 77 (8) ◽  
pp. 957-968
Author(s):  
A. A. Butkarev ◽  
E. A. Butkareva
Keyword(s):  
Comparative Analysis ◽  
Iron Ore ◽  
High Efficiency ◽  
Electric Energy ◽  
Iron Ore Pellets ◽  
Electric Energy Consumption ◽  
Ore Pellets ◽  
Type Selection ◽  
Cost Of Energy ◽  
Selection Of

At present, mainly straight grate machines (SGM) and combined facilities grate-tube-type kiln-cooler (GKC) are used for heat-strengthening induration of iron ore pellets. Their total share in the produced iron ore pellets in the world accounts for 93%, of which SGM takes 60% and GKC – 33%, which speaks about high efficiency of both methods of induration. At the same time, when making decision on construction a pelletizing plant, a question of selection of most effective technology of iron ore pellets production by SGM and GKC often arises. Results of comparative analysis of efficiency of technologies of iron ore pellets production by SGM and GKC presented. Features of various ore types pellets induration considered as well as possibilities of ensuring the required quality of finished pellets at application for induration SGM and GKC. Data on maximum productivity of the considered induration facilities, amount of dust, fines formation, emissions of harmful substances into environment and electric energy consumption presented. Importance of a possibility of accounting of fuel type selection, of heat expenses for heat treatment, of expenses for maintenance, capital and operation costs were noted. It was shown that choice of a particular variant of technology should be done at the stage of elaboration feasibility study accounting existing experience of facilities running, availability of fuel types, cost of energy resources, climate zone and assembling solutions.

Graphite Electrodes for Hydrogen Production by Acid Electrolysis

2020 ◽  
Vol 1012 ◽  
pp. 158-163
Author(s):  
Oliveira Marilei de Fátima ◽  
Mazur Viviane Teleginski ◽  
Virtuozo Fernanda ◽  
Junior Valter Anzolin de Souza
Keyword(s):  
Hydrogen Production ◽  
Fossil Fuels ◽  
High Efficiency ◽  
Low Cost ◽  
Electric Energy ◽  
Gas Production ◽  
Hydrogen Fuel Cells ◽  
Graphite Electrodes ◽  
Alkaline Electrolysis ◽  
Selection Of

Nowadays, humanity has become aware of the consequences that the use of fossil fuels entails, and the latest developments in the energy sector are leading to a diversification of energy resources. In this context, researching on alternative forms of producing electric energy is being conducted. At the transportation level, a possible solution for this matter may lie in hydrogen fuel cells. The electrolysis of water is one of the possible processes for hydrogen production, but the reaction to break the water molecule requires a great amount of energy and this is precisely the biggest issue involving this process. In this work, low cost electrodes of 254 stainless steel and electrolytic graphite were used for hydrogen production, allowing high efficiency and reduced oxidation during the process. The selection of these materials allows to obtain a high corrosion resistance electrolytic pair, by replacing the high cost platinum electrode usually employed in the alkaline electrolysis process. The formic acid of biomass origin was used as an electrolyte. It was observed that the developed reactor have no energy losses through heat and it was possible to obtain approximately 82% conversion efficiency in the gas production process.

scholarly journals Future Trends in Subsonic Transport Energy Efficient Turbofan Engines

1980 ◽  
Author(s):  
R. P. Johnston ◽  
P. Ortiz
Keyword(s):  
Performance Improvement ◽  
Energy Efficient ◽  
Electric Energy ◽  
Advanced Technology ◽  
Fuel Saving ◽  
Technology Program ◽  
Transport Aircraft ◽  
Turbofan Engines ◽  
Aircraft System ◽  
Selection Of

Details of the NASA sponsored General Electric Energy Efficient Engine (E3) technology program are presented along with a description of the engine, cycle and aircraft system benefits. Opportunities for further performance improvement beyond E3 are examined. Studies leading to the selection of the E3 cycle and configuration are summarized. The advanced technology features, cycle and component performance levels are also presented. An evaluation of the benefits of the fully developed Flight Propulsion System (FPS) is made relative to the NASA program goals by comparing the FPS with the CF6-50C where both are installed in advanced subsonic transport aircraft. Results indicate that a mission fuel saving from 15 to 23 percent is possible depending on mission length.

scholarly journals Multi-criteria analysis for the selection of advanced oxidation technologies in the treatment of emerging pollutants

Respuestas ◽  
2020 ◽  
Vol 25 (2) ◽  
pp. 16-25
Author(s):  
Fiderman Machuca-Martínez ◽  
Mónica Almansa-Ortegón ◽  
Pablo César Manyoma-Velázquez
Keyword(s):  
Large Scale ◽  
Evaluation Criteria ◽  
Electric Energy ◽  
Technical Information ◽  
Multicriteria Analysis ◽  
Advanced Oxidation ◽  
Appropriate Technology ◽  
Electric Energy Consumption ◽  
Selection Of ◽  
Advanced Oxidation Technologies

Although there is technical information on the efficiency of advanced oxidation technologies (TAOs) at the laboratory level, in some cases at the pilot level and few on a large scale, it is not easy to select the most appropriate technology for an effluent, since the selection of technology depends on the characteristics of the contaminated water. Through the application of the multicriteria analysis technique, this article proposes a scale of TAOs for the complementary treatment of water contaminated with contaminants emergent (CE). The chosen alternatives were the technologies with peroxide (H2O2), Ozone (O3) and Fenton (Fe/H2O2) processes, the evaluation criteria were electric energy consumption (EEO), technological maturity level, complexity of design / operation and cost of operation. The technology most recommended by AHP is ozone and peroxide / UV with a difference of 8.6% in the frequency in the evaluation of the criteria. For the AHP-TOPSIS methodology, peroxide / UV is the key technology over ozone with a difference of 31.4% in the frequency of selection.

DEVELOPMENT OF RIG HANGING HYDRO TURBINE BASED ON WASTE WATER DISCHARGE AT CHALLAWA INDUSTRIAL AREA OF KANO STATE

2021 ◽  
Vol 5 (2) ◽  
pp. 320-326
Author(s):  
F. A. Umar ◽  
S. M. Lawan ◽  
C. N. Okpala ◽  
A. Aminu
Keyword(s):  
Waste Water ◽  
Power Plant ◽  
Water Discharge ◽  
Electric Energy ◽  
Industrial Area ◽  
Steam Power ◽  
Hydro Turbine ◽  
Overall Design ◽  
Sensitive Site ◽  
Selection Of

Design of hydroelectricity system is employed here in an effort to produce electric energy using an exhaust waste water of steam power plant. The major concern in this work is how the system is designed, selection of site and resources. The system after designed and fabricated was mounted at waste water outlet for proof run for about three months period. The result obtained exhibit the overall design is feasible for the sensitive site application

scholarly journals Application of physical and energetic approach to estimation and selection of atmospheric protection systems for energetic devices

2018 ◽  
Vol 170 ◽  
pp. 04013 ◽  
Author(s):  
Ekaterina Lysova ◽  
Oksana Paramonova ◽  
Natalia Samarskaya ◽  
Oksana Gyrova ◽  
Irina Tsarevskaya
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Power Plants ◽  
Life Support ◽  
Electric Energy ◽  
Gaseous Pollutants ◽  
Operating Characteristics ◽  
Advantages And Disadvantages ◽  
Energetic Approach ◽  
Selection Of

The air basin of cities is subjected to considerable pollution, including waste gases generated during the production of thermal and electric energy by power plants. However, power plants are an indispensable element of the life support system on urban areas and they can not be taken out of the city, that means minimizing losses, both material and energy. Therefore, the problem of the correct choice of structural elements and operating characteristics of the process and a system for reducing air pollution is becoming very important. The paper analyzes the most well-known and practical scientific approaches to the selection of optimal measures to reduce air pollution, their advantages and disadvantages are revealed. The authors have singled out the physical and energetic approach as the most acceptable one. The approach is based on the theory of dispersed systems stability, the analysis of the main provisions which allowed us to systematize the parameters of properties, energy parameters and stability of gaseous pollutants formed during the operation of power plants and to construct a scheme for the transformation of gaseous pollutants for the process of reducing air pollution has been performed. At the same time, stability is the resultant criterion characterizing the gaseous pollutants behavior.

scholarly journals Research of recirculation systems and air recovery systems

2021 ◽  
Vol 291 ◽  
pp. 02012
Author(s):  
G.S. Abiyeva ◽  
G.B. Aldabergenova ◽  
B.A. Balapanov
Keyword(s):  
Electric Energy ◽  
Scientific Work ◽  
Energy Resources ◽  
Simultaneous Increase ◽  
National Importance ◽  
Urgent Task ◽  
Manufactured Products ◽  
The Cost ◽  
Selection Of ◽  
Ventilation Systems

The scientific work “Research of recirculation systems and air recovery systems” is devoted to the analysis and selection of the most optimum ventilation systems that will reduce the cost of published products by reducing energy consumption. The purpose of this work is to discover and experimentally study the characteristics that affect the use of thermal and electric energy by ventilation systems and air heating in the industry, as well as to create solutions that allow to achieve a decrease in the consumption of fuel and energy resources for these systems. The relevance of the work is to reduce the cost of manufactured products and increase their own competitiveness by saving consumed energy resources. In this regard, the development of completely new solutions focused on the economic efficiency of electrical and thermal energy in ventilation and heating systems in various industries, with a simultaneous increase in sanitary hygienic efficiency, today is an urgent task of solving the problem and has economic national importance.

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