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Get this from a library! Étude et expérimentation de la commande d’un hacheur – série – parallèle. [Christian Pourny; Conservatoire national des arts et métiers. Results 1 – 6 of 6 Commande Floue D un Redresseur En Cascade Avec Un Hacheur Double Étage by Birame, M’hamed / Mokrani, Lakhdar and a great selection. Schéma de principe des convertisseurs N/A parallèles. A partir des . (2R en parallèle avec 2R est égale à R, R en série avec R donne 2R et ainsi de suite).

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Ceci permet de definir, en chaque point du reacteur et pour des detecteurs repondant a des neutrons de vitesse definie, des fonctions de correlation et de transfert dont les entrees sont attaquees par une meme source de bruit blanc. La resolution de l’equation de Serid demeure une etape importante dans la prediction du comportement d’un reacteur nucleaire.

So, from a hydrodynamic point of view, this new reactor exhibits characteristics suitable for its use in catalytic tests. IV – Spectra measurements.

Similarly, practical experimentation might allow to foresee more handy assembling of the capsule, specimen loading-and unloading being easier at the same time. Finally, investigation to date in the CEA on recombination rt for power reactors is also discussed.

The reaction is complicated from the beginning by the formation of higher oxides of nitrogen which we identify and measure.

The first part of this paper describes the device or facility used, the computation method applied, and the results obtained. On a compare les resultats experimentaux a d’autres valeurs obtenues, aux memes reactivites, par la methode des neutrons pulses. Briggs and Stratton Site: Dans l’expose de ces programmes, les auteurs expliquent pourquoi on a. V – Experimental shielding measurements. Some measurements, made on G-1 and G-2, show the precision one can obtain from adjustment apparatus itself as well as from the complete reactor adjustment system.

A precise meaning is also given to the importance operator, which is the adjoin of the transport operator. The paper describes the basic structural features of the reactor and the results of the experiments for which it has been used. La deuxieme partie de ce memoire se consacre a la modelisation des coeurs rapides avec reflecteur acier. Study of the catalytic parallelee of mixed non-stoichiometric uranium-thorium oxides in carbon monoxide oxidation; Etude de l’activite catalytique des oxydes mixtes d’uranium et segie thorium non stoechiometriques dans l’oxydation du monoxyde de carbone.


An important research programme on heavy water reactor physics has been carried out in France for quite a few years. Une premiere partie de la these reprend toutes les etapes de modelisation neutronique des reacteurs rapides actuellement d’usage dans le code de reference ECCO.

reacteurs catalytiques membranaires: Topics by

Anderson Power Product Vers: Please refer to our privacy policy for more information on privacy at Loot. Ce code a ete utilise pour simuler un accident LOCA dans un reacteur nucleaire de type. Some fundamental aspects of boiling in nuclear reactors; Quelques aspects parallelw de l’ebullition dans les reacteurs nucleaires. A general mechanism is proposed for these phenomena.

Ce formulaire permet de calculer de facon simple les difterents flux de neutrons et de gamma et, par suite, de paallele les quantites minima de materiaux a utiliser pour que les conditions generales de securite soient respectees, tant pour le personnel que pour les installations.

Chemical pollution has led to the creation of ion exchange purification loops specially designed for reactors: General views parallels specimen irradiations in reactors; Considerations generales sur’les irradiations d’echantillons dans les reacteurs. L’etancheite du caisson est assuree par une tole de 30 mm liee a la face interne du beton.

The general diagrams of the safety assemblies which have been drawn up for two types of reactor power reactor and seriee power experimental reactor are given.

Hacheur (électronique)

Thermo Electric Devices Vers: La solution preconisee peut etre decrite comme un reacteur de type piscine a coeur clos, non pressurise, tres sous modere par l’eau legere parrallele refroidissement. A defaut une localisation dans un groupe d’elements est obtenue par depression de flux. A study has been made of their physico-chemical properties overall and surface chemical constitution, texture, structure, electrical conductivityas well as of their adsorption properties with respect to gaseous species occurring in the catalytic reaction.

This report deal about ‘Techniques of control of the nuclear reactors’ in the goal to achieve the control of natural uranium reactors and especially the one of Saclay. In the setie part are presented the principles used and their ranges of validity. Finally, we outline a computation method enabling us to determine the sources of captured gamma rays by the age theory and we give an example of the application in a composite shield.

schéma veilleuse

Dans cette fonction de transfert, les variables r et p variable de Laplace demeurent groupees dans une fonction de Bessel modifiee. It is possible to detect cracks of the order of the square millimeter. Graded-composition multilayer structures and microstructure are then elaborated by co-sintering. The problem has been studied for an electric power generating system that does not foresee selling the plutonium produced by its reactors and does not buy plutonium outside, which enables a good approximation to be made and eliminates the major unknown quantity represented by the future market price of plutonium.


The reactor is provided with a control and safety system which ensures automatic maintenance of mean power and swift shutdown in the event of any operational irregularity.

The article is limited to fluid catalytic cracking IFCCI which is by far the most widely used procedure. Starting from this concept, we endeavored to define a removal cross section as a function of energy. The thermal utilisation factor of the lattice of the reactor G1 has been measured by applying the autoradiographic technique to thin detectors irradiated in the cell.

The main diffusion mechanism is surface diffusion through the pores. Quelques releves de flux illustrant la sensibilite de la methode sont donnes a titre d’exemple. Within this context, Catalytic Membrane-based Reactors CMR would allow an improvement of the process efficiency and a reduction of investment and production costs with respect to the present technologies.

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A grid trap has been set right ahead the reactor. Experience gained in two years operation of G1; Experience acquise au cours de deux ans de fonctionnement du reacteur G1.

To elucidate this question this article considers the vehicles that are the most comparable possible from the standpoint of design and equipment to compare emissions.

Application aux reacteurs nucleaires Il contient un certain nombre de donnees nucleaires, de methodes de calcul et de constantes correspondant a l’etat actuel de paraolele connaissances. A short study on the technology and the economical advantage of this adjustment is presented. Des mesures effectuees sur les reacteurs G-1 et G-2 montrent la precision que l’on peut attendre des dispositifs de reglage comme du reglage d’ensemble du reacteur lui-meme.