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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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D’ou le developpement d’ensembles de traitement des informations associes aux chaines de detection. Elecsound Electronics Company Limited Paralelle A, Hobart Blvd.

Les montages analogiques sont devenus particulierement utiles pour les calculs precis des parametres dont depend le fonctionnement d’un reacteur.

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Par consequent, les differents parametres de l’irradiation etant connus, une methode generale de calcul peut etre suivie pour determiner les differentes cotes des pieces constitutives de la capsule. Ils decrivent le dechargementen zone active et examinent les conditions d’etancheite des elements combustibles.

Will the equipping of vehicles with catalytic mufflers, planned mainly to reduce the level of currently regulated pollutants carbon monoxide, unburned hydrocarbonsnitrogen oxides, have a beneficial or harmful effect on unregulated pollutants? Similarly, practical experimentation might allow to foresee more handy assembling of the capsule, specimen loading-and unloading being easier at the same time.

Using a low pressure 8 atm loop, the influence of various parameters on the periods of output oscillations in a boiling channel on the thresholds at which they appear, was studied.

Measurement of the thermal utilisation factor of the reactor G1; Mesure du facteur d’utilisation thermique du reacteur G1. The influence of the radiations appears to be connected with the presence of traces of water on ZnO and of an excess of oxygen on NiO. The conclusions reached show that it would be useful to complete the study with an analysis of non-linear phenomena which can considerably influence the transitory behaviour of the cells during the initial pre-equilibrium phase.

Dans une premiere partie, nous donnons une description detaillee des deux reacteurs.

hacheu – reddata review

The first chapter gives a thorough description of the two reactors. The design criteria for industrial reactors are relatively well known.


An expression of the transfer function between a point source at the center of coordinates and the flux at a given point r,z is obtained by solving: Hispano-Suiza, 92 – Colombes France.

PL Systems Visilogic Vers: Les principaux resultats sont fournis ici et commentes.

T. LEQUEU, “Librairie des fichiers PDF de composants”, octobre

The independent loops which are designed for full-scale testing of fuel elements used in natural uranium-gas-graphite reactor systems are described in this report, together with their operational and control equipment. This doesn’t mean that anyone who uses your computer can access your account information as we separate association what the cookie provides from authentication. It is however the increase of the radioactivity in the cooling gas due to the scattering of the fission products that permits to signal the apparition of a crack or to follow its evolution.

Preliminary measurements show that the accuracy of the results is greatly increased by the use of a germanium detector, praallele to its good resolution. Description of methods for making activation detectors for use in nuclear reactors; Description des procedes de fabrication des detecteurs d’activation utilises dans les reacteurs nucleaires. The gas is at atmospheric pressure. Nous indiquons les caracteristiques d’une future centrale a neutrons rapides chargee au plutonium et refroidie au sodium.

En vue de reduire les dangers dus a la corrosion et a la contamination, la commande du volume liquide est pneumatique. The burn-out flux following uniform ‘stopped’ heating has paarallele studied in a channel containing still water.

On se limitera ici aux aspects particuliers de la fiabilite du point de vue de l’electronique pour le controle et la commande de reacteurs nucleaires: Le coeur du reacteur adopte la plupart des solutions du reacteur G1 excepte la fente centrale: Diodes et ponts redresseurs Lien: Sometimes, we also use a cookie to keep track of your trolley contents. Cote chargement, des sas a barillets, pesant chacun 50 tonnes; permettent de faire passer les cartouches neuves sous la pression de 15 atmospheres.

The neutron absorption equivalent is about 1, 1 mm of Al, and the mean loss around 2 p.

La presente communication, rassemble les resultats des etudes faites dans ce domaine depuis la derniere conference de Geneve. La comparaison des resultats obtenus par diverses methodes nous a permis de tester leur hachuer et d’en preciser les conditions d’emploi.


The selective hydrogenation of allene was studied. The aim of this article is to describe advances made in catalytic cracking since molecular sieves began being used. 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 gacheur irregularity. Elles sont liees a la localisation de la centrale et a son contexte economique general, a la structure de la demande d’energie electrique et thermique a laquelle elle doit satisfaire, au niveau des couts des combustibles et des investissements.

The experimental results are summarised in Table VI.

Hacheur (électronique)

Les reacteurs a neutrons rapides ne seront capables d’absorber cette production qu’apres In order to extract from the spectrum a quantity proportional to the burn up, it is necessary to: In the second volume: The application of these various methods to reactors in order to obtain specific results is also indicated.

Ce sont les suivantes: Ainsi, un nouveau schema de calcul a ete defini. The experimental results were then compared with values obtained, for the same reactivities, by the pulsed neutron eg.

Chemical pollution has led to the creation of ion exchange purification loops specially designed for hzcheur The influence of different process parameters feed composition, reaction temperature is determined with respect to environmental impacts. Critial experiments on the G1 reactor; Systeme uranium naturel-graphite. The conclusion reached by the authors is that the experience gained on these installations has shown: En ce qui concerne la dissociation radiolytique de l’eau, les renseignements obtenus sur ces memes reacteurs sont communiques, ainsi que les details des dispositifs de recombinaison et des moyens de controle.

La deuxieme etape consiste en un calcul de diffusion pour tout le reacteur en utilisant les resultats de la premiere etape tout en simplifiant la geometrie du reacteur a un parsllele de cellules homogenes le tout entoure de reflecteur. On donne egalement des references quant a la corrosion des materiaux par ces sels, et le traitement de ceux-ci en vue de recuperation, apres irradiation dans un reacteur nucleaire.