Готові списки джерел за темами / Discharge chamber

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Добірка наукової літератури з теми "Discharge chamber"

Автор: Grafiati
Опубліковано: 30 травня 2022
Оновлено: 31 травня 2022

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Статті в журналах з теми "Discharge chamber"

1

Булат, П. В., К. Н. Волков, И. И. Есаков, П. Б. Лавров та А. А. Раваев. "Электродинамическая модель камеры сгорания, использующей инициированный подкритический стримерный разряд для поджигания топливной смеси". Журнал технической физики 92, № 5 (2022): 676. http://dx.doi.org/10.21883/jtf.2022.05.52371.1-22.

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Various electrodynamic models of a combustion chamber, in which an initiated subcritical streamer discharge is used to ignite a combustible mixture, are considered. To localize the discharge in the working chamber, discharge initiators are used based on half-wave electromagnetic vibrators with resonant properties. The dependences of the structure of the electric fields that form the discharge on the geometric parameters of the discharge initiator are obtained on the basis of numerical calculations, and the issues of matching the chamber with the radiation generator are considered. Comparison of the calculation options for different positions of the initiator of the discharge in relation to the optical centreline of the camera. Possibilities for further enhancement of the field in the working zone at the poles of the microwave discharge initiator, which is required for the formation of discharges with a developed streamer structure at elevated gas pressures in the combustion chamber, are discussed. The ways of increasing the resulting electromagnetic field in the area of vibrators for the formation of discharges with a volumetric structure have been determined.
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2

Bereka, V. O., and I. P. Kondratenko. "MATCHING OF COMPATIBLE WORK OF SHORT HIGH-VOLTAGE PULSES OF TENSION GENERATOR AND WATER TREATMENT CHAMBER BY DINT OF PULSE BARRIER DISCHARGE." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 60 (December 10, 2021): 21–27. http://dx.doi.org/10.15407/publishing2021.60.021.

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A technique for calculating the parameters of a magnetic switch as an element of a generator of short high-voltage pulses of tension to coordinate its compatible work with a water treatment chamber by dint of pulse barrier discharge is shown. The expediency and efficiency of using such a switch as an element that, by shunting, the discharge chamber, discharges the barrier to the arrival of the next voltage pulse has been confirmed. It is proved that with the accepted geometrical dimensions of the discharge chamber and the amplitude of the pulse voltage, provided that the magnetic switch is present that it is possible to increase the practical use of electricity by ~ 40% due to that which was accumulated in the dielectric barrier in one discharge. Ref.10, fig. 5.
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3

Budin, A. V., A. A. Bogomaz, V. A. Kolikov, P. G. Rutberg, and A. F. Savvateev. "Multipulse discharge in the chamber of electric discharge launcher." IEEE Transactions on Magnetics 35, no. 1 (1999): 189–91. http://dx.doi.org/10.1109/20.738401.

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4

Kosenkov, V. "Influence of Vapor-Gas Cavity on Pressure Field in Closed Discharge Chamber with Rigid Walls." Elektronnaya Obrabotka Materialov 57, no. 3 (June 2021): 102–16. http://dx.doi.org/10.52577/eom.2021.57.3.102.

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Анотація:
The pressure field in discharge chambers of a limited volume with deformable walls very often has a great influence on the efficiency of technological processes of deformation of sheet alloys; therefore, its determination is an urgent task. As a result of an electric discharge in the liquid filling the discharge chamber, in it, a cavity with a higher compressibility is formed than the liquid in the chamber. At the stage of the discharge, this cavity is filled with non-ideal plasma, and after the discharge, with liquid vapor and gases dissolved in it (vapor-gas cavity). Its pulsations form a pressure field in the discharge chamber. The moving boundary of the vapor-gas cavity creates great problems in calculating the pressure field in a liquid, especially after a large number of its pulsations. At present, the role of the vapor-gas cavity in the formation of the pressure field in the discharge chamber with a deformable wall, which is a sheet alloy plate, is insufficiently studied. Its definition is the purpose of this work. The study was carried out on the base of a previously developed mathematical model of an electric discharge in water, which in this work is supplemented with relations that significantly increase the accuracy of calculating the resistance of the discharge channel and the energy released in it. It was determined that the pulsations of the vapor-gas cavity provide pressure fluctuations in it in an antiphase with the average pressure in the liquid. In a discharge chamber with rigid walls, they decay slowly, but the presence of a deformable wall leads to a rapid decay of pressure fluctuations. In the previously developed mathematical model, the change in the optical transparency of the plasma was taken into account, and its significant effect on the pressure in the cavity and the pressure field in the liquid was determined.
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5

Galli, G., H. Hamrita, C. Jammes, M. J. Kirkpatrick, E. Odic, Ph Dessante, Ph Molinie, B. Cantonnet, and J.-C. Nappé. "Characterization and localization of partial-discharge-induced pulses in fission chambers designed for sodium-cooled fast reactors." EPJ Web of Conferences 170 (2018): 03002. http://dx.doi.org/10.1051/epjconf/201817003002.

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During the operation of the Superphenix and Phenix reactors, an aberrant electrical signal was detected from the fission chambers used for neutron flux monitoring. This signal, thought to be due to partial electrical discharge (PD) is similar to the signal resulting from neutron interactions, and is generated in fission chambers at temperatures above 400 °C. This paper reports work on the characterization and localization of the source of this electrical signal in a High Temperature Fission Chamber (HTFC). The relation between the shape of the PD signal and various parameters (nature and pressure of the chamber filling gas, electrode gap distance, and fission chamber geometry) are first described. Next, experiments designed to identify the location within the chambers where the PD are being generated are presented. After verification and refinement of the results of these localization studies, it should be possible to propose changes to the fission chamber in order to reduce or eliminate the PD signal.
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6

Hiatt, Jeffrey M., and Paul J. Wilbur. "Ring cusp discharge chamber performance optimization." Journal of Propulsion and Power 2, no. 5 (September 1986): 390–97. http://dx.doi.org/10.2514/3.22919.

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7

Bosyakov, M. N., and A. A. Kozlov. "Energy and gas dynamic characteristics of ionization nitrogen installations of industrial type." Proceedings of the National Academy of Sciences of Belarus, Physical-Technical Series 63, no. 3 (November 1, 2018): 342–50. http://dx.doi.org/10.29235/1561-8358-2018-63-3-342-350.

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The work provides the analysis of power characteristics of the industrial equipment – ionic nitriding applications – with different types of vacuum chambers – with hot and cold walls. The calculations results and experimental researches of thermal balance of the system “melt-wall chamber” at the process of plasma nitration for industrial applications are given. The work examines the influence of heat-shielding screens quantity in the applications with cold walls on the internal screen temperature and power of thermal losses at warming up parts melt and at its isothermal endurance. It has been displayed the significant influence of the discharge chamber geometry on the discharge power value which is necessary for the melt warming up and its exposition at the certain temperature – the less are geometrical sizes of the chamber (diameter and height), the smaller is the power of the smoldering discharge which is required for ensuring necessary melt temperature. It is shown that at sufficient melt parts distance from the chamber walls, the voltage drop on the skeleton of the smoldering discharge can be tens volts that causes the decrease of cathodic falling potential and, respectively, the increase of the electric power which is required to maintain necessary melt temperature in comparison to melt which is as close as possible to chamber walls. It leads to the fact that at more dense loading, smaller specific consumption of the electric power to ensure the necessary depth of the nitrated layer is required; at the same time the specific energy consumptions by the melt temperature of 525–530 °C are 0.6–1.6 kW∙h/kg, depending on the loading extent of the chamber. It has been displayed that at ionic nitration, the value of working gas pressure must provide the deviance of the smoldering discharge i. e. the whole area the cathode –melt must be captured by the discharge luminescence.
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8

Mujic, E., A. Kovacevic, N. Stosic, and I. K. Smith. "The influence of port shape on gas pulsations in a screw compressor discharge chamber." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 222, no. 4 (November 1, 2008): 211–23. http://dx.doi.org/10.1243/09544089jpme205.

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Анотація:
Gas pulsations in suction and discharge chambers are a significant source of noise in screw compressors. This paper shows how such effects in the discharge chamber are influenced both by the compressor operating conditions and its geometric characteristics. An area function is identified for the discharge port as an important parameter influencing the gas pulsations and it is shown how their amplitude can be reduced by optimization of the port shape.
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9

Kawashima, Kenji, Toshiharu Kagawa, and Toshinori Fujita. "Instantaneous Flow Rate Measurement of Ideal Gases." Journal of Dynamic Systems, Measurement, and Control 122, no. 1 (May 6, 1996): 174–78. http://dx.doi.org/10.1115/1.482439.

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In this paper, a chamber called an “Isothermal Chamber” was developed. The isothermal chamber can almost realize isothermal condition due to larger heat transfer area and heat transfer coefficient by stuffing steel wool in it. Using this chamber, a simple method to measure flow rates of ideal gases was developed. As the process during charge or discharge is almost isothermal, instantaneous flow rates charged into or discharged from the chamber can be obtained measuring only pressure in the chamber. The steady and the unsteady flow rate of air were measured by the proposed method, and the effectiveness of the method was demonstrated. [S0022-0434(00)00301-4]
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10

Murashov, Iu V., V. Ya Frolov, D. Uhrlandt, S. Gortschakow, D. V. Ivanov, and A. D. Sivaev. "Analysis of Arc Processes in Multi-chamber Arrester for Lightning Protection at High-voltage Overhead Power Lines." PLASMA PHYSICS AND TECHNOLOGY 4, no. 2 (2017): 124–28. http://dx.doi.org/10.14311/ppt.2017.2.124.

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Анотація:
Nowadays multi-chamber arresters are widely distributed as devices of lightning protection of overhead power lines. A mathematical modelling of processes in the discharge chamber of multichamber arrester is necessary to carry out in order to improve its breaking capacity. A three-dimensional mathematical transient model of thermal, gas-dynamic and electromagnetic processes taking place in the discharge chamber of multi-chamber arrester is presented in the article. Basic assumptions, model equations, a computational domain and the boundary conditions are described. Plasma turbulence is taken into account. The results of the calculation i.e. distributions of plasma temperature and overpressure in the discharge chamber at different time points are shown. The analysis of the results was carried out. It is shown that the presence of cavities in the electrodes design promotes electric arc extinction in the discharge chamber of multi-chamber arrester.
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Більше джерел

Дисертації з теми "Discharge chamber"

1

Mahalingam, Sudhakar. "Particle Based Plasma Simulation for an Ion Engine Discharge Chamber." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1198181910.

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2

Tran, Binh Phuoc. "Modeling of Ion Thruster Discharge Chamber Using 3D Particle-In-Cell Monte-Carlo-Collision Method." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/33510.

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This thesis is aimed toward developing a method to simulate ion thruster discharge chambers in a full three dimensional environment and to study the effect of discharge chamber size on ion thruster performance. The study focuses solely on ring-cusped thrusters that make use of Xenon for propellant and discharge cathode assembly for mean of propellant ionization. Commercial software is used in both the setup and analysis phases. Numerical simulation is handled by 3D Particle-In-Cell Monte-Carlo-Collision method. Simulation results are analyzed and compared with other works. It is concluded that the simulation methodology is validated and can be used to simulate different cases. Therefore, different simulation cases of varying chamber sizes are done and the results are used to develop a performance curve. This plot suggests that the most efficient case is the 30 cm thruster. The result further validates the simulation process since the operating parameters used for all of the cases are taken from a 30 cm thruster experiment. One of the obvious applications for such a simulation process is to determine a set of the most efficient operating parameters for a certain size thruster before actual fabrication and laboratory testing.
Master of Science
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3

Macquisten, M. A. "The pulsed electric discharge as an acoustic probe for combustion chamber diagnostics." Thesis, London South Bank University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373899.

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4

Gruber, J. R. "A study of erosion due to low-energy sputtering in the discharge chamber of the Kaufman ion thruster." Thesis, University of Oxford, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249396.

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5

Tomashevskyi, Roman, Viacheslav Kulichenko, and Nikolay Mahonin. "System for Flow Rate Regulation with Pulse-Width Modulation." Thesis, Kyiv polytechnic institute, 2014. http://repository.kpi.kharkov.ua/handle/KhPI-Press/7880.

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Анотація:
In article describes the concept of the flow control system for ozone-oxygen mixture, using the principles of pulse-width modulation. The basic equation for calculation of the system measurement channel are given. Experimental studies of such air channel system and its performance characteristics are describes. The possibility of using flow control system ozone-oxygen mixture in medical ozone is shown.
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6

Deisting, Alexander [Verfasser], and Silvia [Akademischer Betreuer] Masciocchi. "Measurements of ion mobility and GEM discharge studies for the upgrade of the ALICE time projection chamber / Alexander Deisting ; Betreuer: Silvia Masciocchi." Heidelberg : Universitätsbibliothek Heidelberg, 2018. http://d-nb.info/1177384647/34.

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7

Penkal, Bryan James. "Steps in the Development of a Full Particle-in-Cell, Monte Carlo Simulation of the Plasma in the Discharge Chamber of an Ion Engine." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1367586856.

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8

Махонін, Микола Віталійович. "Метод визначення параметрів генератору медичного озону для ефективного підвищення його продуктивності". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42015.

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Анотація:
Дисертація на здобуття наукового ступеня кандидата технічних наук (доктора філософії) за спеціальністю 05.11.17 «Біологічні та медичні прилади і системи». – Національний технічний університет «Харківський політехнічний інститут», Харків, 2019. Дисертація Махоніна М.В. присвячена вирішенню однієї з актуальних науково-технічних задач сучасного медичного приладобудування – підвищенню ефективності генератору медичного озону за рахунок визначення параметрів розрядної камери, напруги живлення та витрати кисню. На даний час у світі активно використовують озон та його суміші для широких потреб різних галузей. Для отримання озону використовуються спеціальні генератори озону різних типів у залежності від сфери їх застосування. Ці генератори відрізняються розмірами, кількістю озону, що генерується за відрозок часу та інші. Особливістю ж генераторів медичного озону є те, що необхідно підтримувати задані параметри отримуваної озоно-кисневої суміші на протязі усього часу проведення процедури, а у якості робочого газу використовується медичний кисень. Це дозволяє реалізовувати методики озонотерапії для максимально ефективного лікування пацієнтів. Типові параметри озоно-кисневої суміші, які повинен забезпечувати медичний генератор озону регламентуються в Україні «Методиками для застосування озону в медичній практиці», які були затверджені Міністерством охорони здоров’я в 2004 році. Згідно сучасної редакції цих методик концентрація озону в озоно-кисневій суміші повинна змінюватись у діапазоні від 0,1 до 80 мг/л, а витрата суміші від 0,1 до 1 л/хв. Медичні генератори озону активно використовуються у кабінетах озонотерапії та медичних установах України, країн СНД, а також країн Латинської Америки. Щорічно у світі проводиться велика кількість конференцій присвячених озонотерапії, на яких вона отримує свій подальший розвиток Практичне використання генераторів медичного озону свідчить, що більшість апаратури, що використовуються, потребує вдосконалення для забезпечення роботи на основі сучасних медичних рішень у лікуванні. Тобто розробка сучасного генератора потребує не тільки відповідність параметрів сучасним вимогам, а й ще запас на розвиток та можливість збільшення значень концентрації озону. Крім того, у більшості медичних генераторів озону спостерігається невідповідність заявлених параметрів озоно-кисневої суміші та значення продуктивності по озону. Продуктивність генератора озону, в свою чергу, залежить від: параметрів розрядної камери, параметрів напруги живлення, параметрів робочого газу. Вирішенням проблему пошуку оптимальних значень цих параметрів для підвищення ефективності роботи генератора озона займаються багато науковців, серед яких можна виділити японських, німецьких та науковців з країн СНД. Але на даний момент ще не існує універсальної моделі розрахунку параметрів генератору Таким чином, задача підвищення ефективності роботи генератора медичного озону за рахунок визначення найкращих параметрів його вузлів, що дозволить підвищити якість процедур озонотерапії є актуальним і перспективним напрямком розвитку генераторів озону. У дисертаційній роботі вперше побудовано математичну модель синтезу озону в розрядній камері генератора медичного озону, яка враховує вплив не тільки параметрів електричної енергії, а також параметрів розрядної камери та робочого газу. Отримані залежності впливу параметрів електричної енергії на синтез озону у розрядній камері на основі проведеного аналізу та з використанням комп’ютерного моделювання. Отримала подальший розвиток модель процесу генерації озону в бар'єрному розряді, яка, на відміну від існуючої, враховує не тільки параметри напруги живлення і розміри камери, але і процеси, що відбуваються в розрядному проміжку. Запропоновано методику розрахунку основних параметрів генератора озону при його розробці, що дозволяє підвищити ефективність синтезу озону. Практичне значення одержаних результатів полягає у обґрунтованні переліку параметрів, що чинять найбільший вплив на продуктивність генератора медичного озону; інженерних розрахунках параметрів генератора медичного озону, які дозволили оптимізувати конструкцію генератора з заданими параметрами; реалізації експериментального зразка генератора медичного озону з вдосконаленою системою автоматичного регулювання витрати газу, що дозволила забезпечити виконання широко спектру процедур озонотерапії. Отриманні практичні результати дисертаційної роботи впроваджені на НВП «Еконіка» при розробці та виготовлення сучасних генераторів медичного озону, а також розроблений макетний зразок пройшов медичну апробації у медичному центрі «Пульс-медика» та у Інституті медичної радіології ім. С.П. Григор’єва.
Thesis for the degree of candidate of technical sciences (PhD) in the specialty 05.11.17 “Biological and medical devices and systems”. -National Technical University "Kharkov Polytechnic Institute", Kharkov, 2019. The thesis is devoted to the solution of one of the current scientific and technical problems of modern medical instrument making - increasing the efficiency of the medical ozone generator by determining the parameters of the discharge chamber, the supply voltage and the oxygen consumption. Currently, ozone and its mixtures are widely used in the world for the wide range of applications. Different types of ozone generators depending on their application are used for ozone synthesis. These generators differ in size, the amount of ozone generated by the time span, etc. The peculiarity of the generators of medical ozone is that it is necessary to maintain the prescribed parameters of the resulting ozone-oxygen mixture throughout the entire duration of the procedure, and medical oxygen is used as the working gas. This allows us to implement ozone therapy techniques for the most effective treatment of patients. Typical parameters of the ozone-oxygen mixture, which the ozone generating plant should provide, are regulated in Ukraine "Methods for the application of ozone in medical practice", which were approved by the Ministry of Health in 2004. According to the modern version of these methods, the concentration of ozone in the ozone-oxygen mixture should vary in the range from 0.1 to 80 mg / l, and the flow rate of the mixture is from 0.1 to 1 l / min. Medical ozone generators are actively used in the offices of ozonotherapy and medical institutions in Ukraine, CIS countries, as well as Latin American countries. A large number of conferences devoted to ozone therapy are being held annually in the world in which it is further developed. The practical use of generators of medical ozone shows that most of the equipment used needs to be improved to provide work on the basis of modern medical solutions in treatment. That is, the development of a modern generator requires not only compliance with the parameters of modern requirements, but also a stock for development and the possibility of increasing the values of ozone concentration. In addition, in most medical ozone generators there is a discrepancy between the stated parameters of the ozone oxygen mixture and the value of ozone productivity. The performance of the ozone generator, in turn, depends on: the parameters of the discharge chamber, the parameters of the supply voltage, the parameters of the working gas. Many scientists, including Japanese, German and scholars from the CIS countries, are engaged in solving the problem of finding the optimal values of these parameters for increasing the efficiency of ozone generator operation. But at the moment there is still no universal model for calculating the parameters of the ozone generator. Thus, the task of increasing the efficiency of the medical ozone generator by determining the best parameters of its nodes, which will improve the quality of ozone therapy procedures, is an urgent and promising direction for the development of ozone generators. In the dissertation, for the first time, a mathematical model of the synthesis of ozone in a digital chamber of the medical ozone generator was constructed, which takes into account the influence not only of the parameters of electric energy, but also of the parameters of the discharge chamber and the working gas. The dependence of the influence of electric energy parameters on the synthesis of ozone in a discharge chamber was obtained on the basis of the conducted analysis and using computer simulation. The model of the ozone generation process in the barrier discharge has been further developed, which, in contrast to the existing one, takes into account not only the power supply parameters and camera dimensions, but also the processes occurring in the discharge gap. The method of calculation of the basic parameters of the ozone generator during its development, which allows increasing the efficiency of ozone synthesis, is proposed. The practical value of the results obtained is to justify the list of parameters that have the greatest impact on the performance of the medical ozone generator; engineering calculations of parameters of the generator of medical ozone, which allowed to optimize the design of the generator with the given parameters; the implementation of an experimental model of the medical ozone generator with an improved system of automatic regulation of gas consumption, which allowed to ensure the implementation of a wide range of procedures for ozone therapy. The practical results of the dissertation work were introduced at the Scientific-Production Enterprise "Econika" in the development and manufacture of modern generators of medical ozone, and also a prototype sample was developed, was tested at the medical center "Pulse Medika" and at the Institute of Medical Radiology N.A. Grigoriev.
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9

Galli, Giacomo. "Etude des décharges partielles dans une chambre à fission haute température." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLC109/document.

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Le Commissariat à l'Energie Atomique et aux Energies Alternatives (CEA) a en charge la conception d'un réacteur à neutrons rapides de quatrième génération.L'instrumentation neutronique de ce futur réacteur s'appuiera sur des chambres à fission placées en cuve. Ces chambres à fission à haute température (CFHT) devront fonctionner à pleine puissance à une température comprise entre 400°C et 650°C.Un bilan récent de la technologie CFHT a révélé que certains points sont à améliorer afin d'en garantir une plus grande fiabilité.En particulier, on recherche une meilleure compréhension du phénomène de décharges partielles. Celles-ci engendrent des impulsions non discernables de celles produites par les fragments de fission du dépôt fissile.Par ailleurs, elles pourraient accélérer le vieillissement des isolants minéraux.En s'appuyant sur une démarche expérimentale et théorique, ce travail de thèse a apporté plusieurs résultats.Les tests sur les différentes chambres à fission ont permis de caractériser les signaux de DP, vis à vis des signaux neutroniques et de trouver une méthode efficace de discrimination DP-neutron. De la même manière, les signaux DP ont été localisés et une solution technologique a été proposée et mise en oeuvre avec succès pour les éliminer.Un outil de calcul pour la simulation des impulsions neutroniques a été conçu et testé avec succès.Une expérience sur l'effet de la température sur la courbe de Paschen, dans un volume de gaz fermé, a été conçue et réalisée en donnant les premiers résultats intéressants
The Commission for Atomic and Alternative Energy (CEA) is in charge of the fourth generation fast neutron reactor design. The instrumentation for neutron flux measurement of this future reactor will be based on fission chambers placed in-core. These high temperature fission chambers (HTFC) will have to operate at full reactor power, and thus at a temperature between 400°C and 650°C.A recent review of HTFC technology has revealed that some points need improvement to ensure greater reliability.In particular, a better understanding of the phenomenon of partial discharges (PD), which are observed in the fission chambers at high temperature, is needed. These PD pulses are indistinguishable from those produced by the products of fission caused by collision with neutrons with the fissile deposit within thechambers.In addition, they could accelerate aging of the ceramic insulators used in the chambers.Based on both experimental and theoretical approaches, this PhD work found several results.Tests on different fission chambers made it possible to characterize the DP signals vis-a-vis the neutron signals and to find an operational DP-neutron discrimination method. The DP signals were localized and a technological solution was proposed and successfully implemented to eliminate them.A calculation tool for neutron pulse simulation was also designed and tested successfully.An experiment on the effect of temperature on the Paschen curve, in a closed gas volume, was designed and carried out giving initial interesting results
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10

Махонін, Микола Віталійович. "Метод визначення параметрів генератору медичного озону для ефективного підвищення його продуктивності". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42014.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.11.17 – біологічні та медичні прилади і системи. Національний технічний університет «Харківський політехнічний інститут», Харків, 2019 р. Дисертацію присвячено розробці методу визначення параметрів генератору медичного озону для ефективного підвищення його продуктивності за рахунок визначення параметрів його частин з урахуванням впливу факторів різної природи. На основі дослідження питання побудови генераторів медичного озону була доведена актуальність дослідження шляхів підвищення його ефективності. Наведені основні фактори, що впливають на продуктивність генератора озону. Запропонована математична модель на основі використання елементарного об’єму , що описує процеси, які відбуваються у розрядній камері при подачі напруги. Розроблено метод визначення параметрів розрядної камери генератору медичного озону, який дозволяє отримати найбільш ефективну конструкцію при заданих режимах роботи. Проведено дослідження розробленної автоматичної системи витрати робочого газу з поліпшеними характеристиками, яка дозволяє здійснювати основні методики озонотерапії. Доведена працездатність даної системи на основі роботи макета генератора медичного озону при проходженні медичної апробації.
Thesis for the degree of candidate of technical sciences in specialty 05.11.17 – biological and medical devices and systems. – National Technical University "Kharkіv Polytechnic Institute", Kharkіv, 2019. The thesis is devoted to the development of a method for determining the parameters of a medical ozone generator to effectively increase its productivity by determining the parameters of its constituent parts, taking into account the influence of factors of different nature. On the basis of the study of the issues of constructing generators of medical ozone, the relevance of the study of ways to increase its efficiency was proved. A mathematical model based on the use of a single volume, which describes the processes occurring in the discharge chamber when the voltage is applied, is proposed. The level of influence of the parameters of the working gas and the geometry of the discharge chamber on the performance of the ozone generator, as well as on the stability of the parameters of the ozone-oxygen mixture, which were set. A method has been developed for calculating the parameters of a discharge chamber of a medical ozone generator, which makes it possible to obtain the most efficient design for given operating modes. A study has been carried out on the development of an automated working gas consumption system with improved characteristics, which makes it possible to carry out the main methods of ozone therapy. The efficiency of this system has been proved on the basis of the work of a medical ozone generator layout during the passage of medical approbation.
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Книги з теми "Discharge chamber"

1

Foster, John E. Plasma emission characteristics from a high current hollow cathode in an ion thruster discharge chamber. [Cleveland, Ohio]: National Aeronautics and Space Administration, Glenn Research Center, 2002.

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2

Enhanced thermal emittance of space radiators by ion-discharge chamber texturing. [Washington, DC]: National Aeronautics and Space Administration, 1987.

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3

K, Ray Pradosh, and United States. National Aeronautics and Space Administration., eds. Modeling of life limiting phenomena in the discharge chamber of an electron bombardment ion thruster: Final report. Tuskegee, Ala: Mechanical Engineering Dept., Tuskegee University, 1991.

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4

United States. National Aeronautics and Space Administration., ed. Characterization of hollow cathode, ring cusp discharge chambers. Fort Collins, Colo: Dept. of Mechanical Engineering, Colorado State University, 1989.

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Частини книг з теми "Discharge chamber"

1

Bocharnikov, V. M., S. V. Golovastov, and V. V. Golub. "Influence of Methane on Ignition Delays of Hydrogen at Impulse Discharge from High Pressure Chamber." In 29th International Symposium on Shock Waves 1, 301–5. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-16835-7_46.

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2

"function chamber without discharge." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 578. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_63396.

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3

CHARPAK, G., and L. MASSONET. "Some Developments of the Discharge Chamber." In World Scientific Series in 20th Century Physics, 36–41. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789812795878_0010.

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4

Fukui, Shuji. "Development of the discharge (spark) chamber in Japan in the 1950s." In Pions to Quarks, 252–59. Cambridge University Press, 1989. http://dx.doi.org/10.1017/cbo9780511563942.021.

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5

Garnov, V. N., S. V. Kabanovsky, V. A. Khrabrov, P. P. Khvostenko, V. A. Kochin, A. I. Nikonorov, P. N. Orlov, I. A. Posadsky, and A. N. Vertiporokh. "Ohmic baking system upgrade for wall conditioning of Tokamak-15 discharge chamber." In Fusion Technology 1996, 515–18. Elsevier, 1997. http://dx.doi.org/10.1016/b978-0-444-82762-3.50099-9.

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6

E. Martínez Santos, Luis, Roberto Linares y Miranda, and Fermín P. Espino-Cortés. "Electromagnetic Spectrum of the Corona Discharge and Their Fundamental Frequency." In Recent Topics in Electromagnetic Compatibility. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.101550.

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Historically, the Electromagnetic Compatibility (EMC) began with the disturbances at the radio navigation systems generated by the electrical power distribution lines; hence it was referred to as Radio Interference (RI). This disturbance is an Electromagnetic Interference (EMI). Although this type of EMI has been studied since the first decades of the past century, it still maintains a continued interest of the researchers, especially with the Corona Discharge (CD), generated by High Voltage Direct Current (HVDC) systems. Because of its design criterion and the concern that this phenomenon may affect the new radio communication systems in the very high frequency (VHF), ultra high frequency (UHF), and microwave bands, interest in their studies continues. In this chapter, an analysis of the electromagnetic spectrum of the CD is presented. The CD is generated at a short transmission line located within a semi-anechoic chamber. To be sure of the phenomenon, the CD is identified by its current pulse, which is well studied. The instruments used are an oscilloscope of 2 GHz and 2 GS/s, a spectrum analyzer, and an EMI test receiver. The results show that the CD concentrates its energy at frequencies below 70 MHz. In the UHF band, only narrowband signals very separated were found, with levels that cannot affect radio communication systems.
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7

Khaimi, Mahmoud A. "Uveitis." In Complications of Glaucoma Surgery. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780195382365.003.0034.

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Delayed-onset postoperative inflammation can result from a diverse range of factors, such as blebitis, bleb-related endophthalmitis, underlying uveitis, mitomycin-C mediated inflammation, herpes infection, phaco-anaphylactic and phacogenic uveitis, intraocular lens (IOL) chafing of the iris, and sympathetic ophthalmia. Delayed postoperative uveitis is defined as inflammation occurring 6 weeks or later postoperatively and is a rare condition that may occur following a glaucoma filtering procedure. Currently, there are very few documented cases of this condition. Even though it is rare, it is important to differentiate the infectious sources of delayed-onset postoperative uveitis after glaucoma filtering surgery from those that are noninfectious so that the appropriate treatment is administered. Infectious cases of uveitis should be considered first. The most common form of late-onset postoperative uveitis after a filtering procedure is blebitis . Brown and colleagues were the first to use the term “blebitis” to describe a limited infection centered around a bleb with or without anterior chamber reaction and no vitreous involvement. In contrast, on the other end of the spectrum, is bleb-related endophthalmitis , which is characterized by a more fulminant course with anterior chamber reaction and the presence of vitritis. Blebitis and bleb-related endophthalmitis typically manifest several months to years after the surgery. Blebitis may often be a precursor to bleb-related endophthalmitis, and early recognition of late-onset bleb-related infections should be taken seriously and promptly treated to avoid severe ocular and visual sequelae. Both forms of bleb-related infection can be differentiated by the extent of ocular inflammation. Patients with blebitis typically complain of redness, foreign body sensation, pain, photophobia, and conjunctival discharge. The conjunctiva around the bleb is also significantly injected. Additionally, the bleb itself usually has a whitish or chalky appearance with or without an epithelial defect. The anterior chamber may have variable degrees of reaction, and a hypopyon may be present in the anterior chamber as well as in the bleb itself. Conversely, patients with bleb-related endophthalmitis typically present with a more fulminant course, which includes rapidly deteriorating vision, redness, pain, and diffuse conjunctival injection. Vitritis, while absent in blebitis, is present in bleb-related endophthalmitis.
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8

"Paddlefish Management, Propagation, and Conservation in the 21st Century." In Paddlefish Management, Propagation, and Conservation in the 21st Century, edited by MAURICE F. METTEE, PATRICK E. O’NEIL, and STEVEN J. RIDER. American Fisheries Society, 2009. http://dx.doi.org/10.47886/9781934874127.ch5.

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<em>Abstract</em>.—This paper describes the movements of 102 sonic tagged paddlefish released in the Alabama River from 2001 to 2005 and 10 sonic fish released in Mobile Bay in 2006, evaluates possible spawning site fidelity at Millers Ferry Lock and Dam, and presents fisheries, river discharge, and lock use data in support of our recommendation to implement January through April fish passage operations at two locks and dams in the Alabama River. Fifty-seven paddlefish released in the Alabama River remained between Millers Ferry and Claiborne locks and dams. Thirty-four fish moved downstream past Claiborne Lock and Dam and inhabited widely separated sites in the Alabama, Tensaw, and Tombigbee rivers. One fish moved upstream through Millers Ferry lock chamber and was detected in Dannelly Reservoir for 2 years. Spawning site fidelity is suggested based on the return of 15 tagged fish to Millers Ferry tailwater area 1 or 2 years following their release. Four of eight paddlefish released in Mobile Bay remained in the Tensaw River system throughout the study. Four other fish were detected above and below Claiborne Lock and Dam in the Alabama River. Movement patterns documented during our study established an important life history link between spawning habitats in the Alabama River, summer feeding habitats in the Mobile–Tensaw River delta, and winter feeding habitats in Mobile Bay. Proposed fish passage operations at Claiborne and Millers Ferry locks and dams should not be expensive to implement and they should not adversely affect navigation, hydroelectric generation schedules, and industrial water needs along the river.
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9

CHARPAK, G., A. BRESKIN, and F. PIUZ. "SOME PROPERTIES OF STACKS OF DISCHARGE CHAMBERS WITH INFINITELY TRANSPARENT ELECTRODES." In World Scientific Series in 20th Century Physics, 47–54. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789812795878_0012.

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10

Yuferev, Leonid, and Alexander Sokolov. "Energy-Efficient Lighting System for Greenhouse Plants." In Handbook of Research on Renewable Energy and Electric Resources for Sustainable Rural Development, 204–29. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3867-7.ch009.

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This chapter describes how with the artificial cultivation of plants lamps are required with a certain spectrum of radiation. For lighting plants have developed a special lamp. Industry produces special gas discharge lamp. In these lamps a fixed range of radiation. Recently, there were light sources for plants on LEDs. LEDs can create light with any spectrum range from 360 to 800 nm. The authors of the article give a technique for modeling the spectrum of luminaires and calculating LED lamps for plants. The tests of the developed lamps for plants in dark chambers are given. A description of a resonant regulated power supply system for LED luminaires is given. In the proposed system when the frequency changes radiation power.
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Тези доповідей конференцій з теми "Discharge chamber"

1

HIATT, J., and P. WILBUR. "Ring cusp discharge chamber performance optimization." In International Electric Propulsion Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-2007.

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2

Jun, Do Han, Woo Young Sim, Sang-Sik Yang, and James Jungho Pak. "A Constant Delivery Micropump Using Surface Tension and Thermopneumatic Pressure." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14390.

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This paper presents the fabrication and test of a constant delivery thermopneumatic micropump made of PDMS without any moving part. The driving force of the liquid discharge is the pneumatic pressure of heated air and the suction of liquid is accomplished by the surface tension. The proposed micropump consists of an inlet, an outlet, a pump chamber, two air chambers, two air discharge channels and two air suction channels. The air chambers have electric heaters on the Pyrex glass substrate. Each air chamber is connected the pump chamber through two different air channels which behaves like check valves. The micropump is fabricated through the spincoating process, the lithograph process, the PDMS molding process and etc. The total dimension of the micropump is 11.7 × 8.8 × 0.7 mm3. The discharge volume of the fabricated micropump was measured for various backward pressures ranging from 0 to 20 cmH2O. The micropump discharges 116 nanoliters in 4 seconds for zero discharge pressure when the input voltage is 3.5 V. As the discharge pressure increases, the discharge volume decreases gradually. The discharge volume deviation is less than 15 percent for the discharge pressure range between 5 and 15 cmH2O. This proposed micropump is feasible for disposable transdermal drug delivery systems.
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3

Mohamed, M. M., and Z. F. Ghatass. "Modified Helium microwave—induced plasma discharge chamber." In SPECTRAL LINE SHAPES. ASCE, 1999. http://dx.doi.org/10.1063/1.58310.

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4

de Groh, Kim, Bruce Banks, and Christina Karniotis. "NSTAR Extended Life Test Discharge Chamber Flake Analyses." In 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-3612.

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5

Stueber, Thomas. "Ion Thruster Discharge Chamber Simulation in Three Dimension." In 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2005. http://dx.doi.org/10.2514/6.2005-3688.

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6

Wirz, Richard, and Ira Katz. "2-D Discharge Chamber Model for Ion Thrusters." In 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-4107.

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Goebel, Dan, J. Polk, and A. Sengupta. "Discharge Chamber Performance of the NEXIS Ion Thruster." In 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-3813.

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8

Facta, Mochammad, Hermawan, Karnoto, Zainal Salam, and Zolkafle Buntat. "Double dielectric barrier discharge chamber for ozone generation." In 2014 1st International Conference on Information Technology, Computer and Electrical Engineering (ICITACEE). IEEE, 2014. http://dx.doi.org/10.1109/icitacee.2014.7065781.

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Rutberg, Ph, A. Bogomaz, A. Budin, V. Kolikov, A. Kuprin, and A. Pozubenkov. "Estimations of some parameters of the discharge chamber of powerful electric discharge launcher." In 27th Plasma Dynamics and Lasers Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1996. http://dx.doi.org/10.2514/6.1996-2328.

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10

Stueber, Thomas. "Discharge Chamber Primary Electron Modeling Activities in 3-Dimension." In 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-4105.

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