IJE_Vol 01 N 01
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Item Water Potentiality of Sustainable Management Challenges in the Oued Souf Region, south east Algeria(جامعة الوادي - university of el oued, 2016-12-31) Miloudi, Abdelmonem1; Remini, BouallemWater is the most essential product of life and is a part of the essential constitution of living cells; it helps to carry out all the vital operations. Water is a cosmic element, in the same way as the sun and the earth. With the population growth in the Souf region, the needs of habitats and farmers increase for water. These needs have a negative consequence on the serene life of the people; the phenomenon of the upwelling of the free water table has taken a very alarming dimension during the last twentieth century. In our study, we focused our intention in the mechanism of the drawdown of the waters of the aquifer CT of state AL Oued (South East Algeria) and the consequences of irrational overexploitation of this aquifer on the environment of the regionItem The profile of the electric field on the earth discontinuity with a lightning conductor(جامعة الوادي - university of el oued, 2016-12-31) Khechekhouche, KhechekhoucheIn this paper, we present some results of investigations carried out in the electric field distribution of both horizontal and vertical lightning conductors in the case of discontinuous earth. The conductors may be situated as well as in the upper or the lower earth part. The electric field distribution was determined in the case of lightning conductor situated between the high voltage rod and the discontinuity (interface) and also in the case of high voltage rod situated between the lightning conductor and the discontinuity. In some situations the electric field distribution on the plan are smaller than defined by the electro-geometrical model. We attribute this result to the great field intensity at the discontinuity, which reduce the lightning conductor discharge capture effect. This is in concordance with the results concerning the electrical strength of such air gaps without lightning conductorsItem Estimating solar radiation according to semi empirical approach of PERRIN DE BRICHAMBAUT: application on several areas with different climate in Algeria(جامعة الوادي - university of el oued, 2016-12-31) Ghodbane, Mokhtar; Boussad, BoumeddaneTthhee ssoulna.r Teon egregty mreaaxcihmiunmg ae ngeirvgeyn fsruormfa cteh ei ss udnir,e ictt liys dneepceensdsaenryt oan gtohoed o sroielnatra trieocne itvheerr eoorfi eanntda titohne tthoew asurdns's t hpeo ssiotiloanr roavdeira ttiiomne wish ear ev ethrye simolpaorr rtaandti atthioinng i.s T pheer pinentednisciutyla cr atloc uthlae tseo olaf rs ocolallre cratodri,a stioo nth ere kcneoivwelde dbgye aonf ianncdli naesdtr sounrofmaciec ails tdhaet ap roimn-asriyte o bstjuedcyti.v eM oaft ltahbis pwaapse rt.h eT hsei mstuuldayti oisn btaosoeld, ownh tehree taru ep rsooglarar mti mwea, st hde egveeologpraedp htioc cmaoldcuell aotef PthEe RdRaIiNly DglEo bBaRl IsColHarA MraBdAiaUtiTo.n Tchoell escotmede bayp palnicya gtieoongsr aopnh diciaffle rseitnet dpelpaecnesd iinng Aolng ethriea ,s elimkei- eEml-pOiruiceadl, oBbistakrinae, dB wliderae acnodn fiOrmraend ibny tchoem dpaayr inogf tMheamrc hw i2th1 ,t hJeu npere v2i1o,u Ssleyp rteemsubletsr p2u1b laisnhde dD beyc etmheb erer se2a1r, cahnedrs tihse o rf egsruelatst competence in this field.Item Numerical Investigation of Heat and Mass Transfer Processes while the Desorption of Hydrogen Gas Stored in MmNi4.6Fe0.4-H6(جامعة الوادي - university of el oued, 2016-12-31) Boukhari, AliThis work presents a numerical investigation of two-dimensional coupled heat and mass transfer processes in a unit disc of an annulus-disc reactor filled with the intermetallic (Mischmetal) compound MmNi4.6Fe0.4, during the hydrogen gas desorption using the finite volume method. Temperature and amount of desorbed hydrogen and their time-averaged quantities inside the metal hydride bed are presented for different heat transfer fluid temperatures, and different metal thermal conductivities. Impacts of both effects on the metal hydride reactor performance in terms of discharging time are examined by means of a set of numerical simulations. Thus, the dehydriding time minimization relates to the adjustment of the amount of heat addition to the packed bed reactor. A good agreement was found between the present computational results and the experimental data reported in the literature.Item Numerical Investigation of Heat and Mass Transfer Processes while the Desorption of Hydrogen Gas Stored in MmNi4.6Fe0.4-H6(University of Eloued جامعة الوادي, 2016) Boukhari, AliThiswork presents a numerical investigation of two-dimensional coupled heat and mass transfer processes in a unit disc of an annulus-disc reactor filled with the intermetallic (Mischmetal) compound MmNi4.6Fe0.4, during the hydrogen gas desorption using the finite volume method. Temperature and amount of desorbed hydrogen and their time-averaged quantities inside the metal hydride bed are presented for different heat transfer fluid temperatures, and different metal thermal conductivities. Impacts of both effects on the metal hydride reactor performance in terms of discharging time are examined by means of a set of numerical simulations. Thus, the dehydriding time minimization relates to theadjustment of the amount of heat addition to the packed bed reactor. A good agreement was found between the present computational results and the experimental data reported in the literature.