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Structural Characterization of ZnO Thin Films Deposited onto Silicon Substrates using Cathodic Magnetron Sputtering

In this study, we analyzed Zinc Oxide (ZnO) thin films deposited on silicon substrates using magnetron sputtering. These films have numerous applications in photovoltaic and optoelectronic devices due to their excellent physique properties. We used…

Structural, electronic, optical and elastic properties of Mg3TH7 (T=Mn, Tc and Re) complex hydrides: First-principles calculations

The structural, electronic, optical and elastic properties of Mg3TH7 (T=Mn, Tc, Re) complex hydrides have been investigated by using the density functional theory ‘DFT’ within the generalized gradient approximation ‘GGA’ parameterized by the Perdew,…

Study and simulation of concentrating irradiance in box solar cooker with tracking reflectors

In this work a design of solar cooker with mirror reflectors has been studied for two tracking modes and his performances are analyzed by the simulation of collected energy on the absorber of the cooker. The box of the cooker receives the solar…

Study of a photovoltaic system for hydrogen production in Algeria

Due to the intermittency of renewable energy and its dependence on climatic conditions, it is necessary to store the energy produced, since it is clean and having a big calorific value. Hydrogen is the better energy carrier at this moment. This work…

Study of dynamic stability of MV (middle voltage) Network of Douala within the meaning of Lyapunov

The studies undertaken have used the method of Lyapunov of the system theory to evaluate the stability of the electric network starting from the power function depending on the dephasing between voltage and current in time. To carry out these…

Study of mixed convection in a horizontal cylindrical pipe partially filled with a porous medium saturated with a single fluid

The three-dimensional numerical simulation of laminar mixed convection heat transfer with and without porous medium in a cylindrical duct was carried out in this study. The cylinder is divided into three parts. The first and the third parts are…

Study of the absorption refrigerating cycle, NH3-H2O coupled with the solar absorption heat transformer, H2O-LiBr by solar data from the City of Oujda (Morocco)

A solar refrigerator is made of a solar collector and a refrigeration system. This paper concerns the study of a two-stage vapour absorption cycle (heat transformer and refrigerating cycle) employing the refrigerant absorbent combinations of H2O-LiBr…

Study of the influence of local materials insulation on cooling loads of a house made of breeze block or laterite in a dry tropical climate

In this paper, we study the influence of local materials for insulating roof and fiber-reinforced mortar coatings on cooling loads of a home in dry tropical climate. The wall of the housing is made of cinderblock or laterite and the insulating…

Study of thermal effects while filling an empty tank

We are interested in this paper to the thermal effects occurring during the filling of hydrogen tanks. The consequence of this heating on the storage performance of these speakers was appreciated. The motivation comes from the fact that the…

Study of two-dimensional transient heat transfer through a multi-layers wall: Application to the buildings thermal insulation

The two-dimensional transient heat conduction through a multilayers wall made of different materials and thicknesses was numerically resolved. The equations system resolution was carried out by Alternating direction implicit method (ADI). The outdoor…

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