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Collection: Short Communication

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Evaluation of the Wind Power Potential in the Northeast of Chad

Chad has done the study and development of renewable resources a priority in its energy mix. Wind energy is one of the renewable sources that can help Chad to develop rural areas and preserve the environment. This study presents from data obtained…

Experimental Comparative Study to Achieve the Maximum Power Point Tracking of a PV System

This paper presents a comparison study in different techniques of maximum power point tracking (MPPT), which have been experimented and validated by simulation in the proposed PV system. The main aim of each MPPT technique is to enhance and optimize…

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…

Response surface methodology (RSM) for biodiesel production from waste cooking oil: Study of fatty acid methyl ester (FAME) yield

The paper aims to improve biodiesel production from used cooking oils using response surface methodology (RSM). The influence of important factors on biodiesel yield has been investigated by employing a 5-level-3-factor central composite design…

Determination of the heat transfer coefficient by convection, according to shape of the baffles (solar air collector)

This experimental study and mathematical modelling aim to improve the heat transfer by convection in different cases of transversal baffles inside a duct of a solar air collector. The study enabled us to formulate a mathematical equation of the heat…

Technical and environmental performance of a solar/gas driven absorption chiller using NH3/LiNO3

This study deals with the evaluation of the technical and environmental operation of solar/gas driven NH3/LiNO3 absorption chillers for malls under the environmental conditions of the city of Barranquilla, Colombia. It involves a sensitivity study on…

Improvement of the energy production of a photovoltaic-wind hybrid system using NF-PSO MPPT

This manuscript gives a contribution to the optimization of a hybrid Photovoltaic-Wind Turbine system with a storage system. In order to capture the maximum power that can be produced by each source, while maintaining the rotor speed of the wind…

Simulation du Stockage de l'Energie Thermique dans un Lit Fixe de Sphères Contenant un Matériau à Changement de Phase

Ce travail présente une étude numérique du stockage de l'énergie thermique par chaleur latente à basses températures (0 °C à 100 °C) dans un lit cylindrique rempli de sphères uniformes, disposées au hasard et contenant chacune un matériau à…

Influence de l'Orientation de la Vitesse du Vent sur la Dispersion d’un Polluant autour d’un Bâtiment

On se propose d'étudier numériquement la dispersion d'un polluant constitué d'un mélange de dioxyde de soufre et d'air en régime turbulent autour d’un obstacle bidimensionnel. On traite principalement l'influence de l’orientation de la vitesse du…

Production d’Hydrogène via le Procédé Catalytique CH4 + CO2

La réaction de reformage du méthane par le CO2 en gaz de synthèse (H2, CO) a été étudiée sur catalyseurs à base de nickel, cobalt et de terres rares supportés. Les solides catalytiques ont été préparés par imprégnation sèche et caractérisés par…

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