Publications (358)
ARTICLE
Effective Lifetime Experimental Measurement under External Magnetic Field in Transient Dynamic State Obtained from a Square Electrical Excitation by Open Circuit Voltage Decay Method
Nazé Yacouba Traoré, Raguilignaba Sam, Alain Diasso, Bernard Zouma, François Zougmoré
In this work, we present an experimental transient 3-Dimensionnal study for the minority charge carriers’ effective lifetime measurement under magnetic field in transient dynamic state. The magnitude of the magnetic field B is varied from 0 mT to 0.03 mT. The method used is mainly based on the open circuit voltage decay method. The solar cell(...)
Effective Lifetime, Electrical Excitation, Frequential Dynamic Regime
ARTICLE
Influence of density on foam collapse under burning
Abdoul Baguian, Salifou Koucka Ouiminga, Claire Longuet, Anne-Sophie Caro, Stephane Corn, Antoine Béré, Rodolphe Sonnier
The fire behaviour of flexible polyurethane foams was studied using a cone calorimeter, with a special emphasis on the collapse step. Only one peak of heat release rate, ranging from 200 to 450 kW/m2, is observed for thin foams, depending on the foam density and the heat flux. On the contrary, heat release rate (HRR) curves exhibit two peaks f(...)
polyurethane foam, fire behaviour
ARTICLE
Experimental Measurement of Minority Carriers Effective Lifetime in Silicon Solar Cell Using Open Circuit Voltage Decay under Magnetic Field in Transient Mode
Alain Diasso, Raguilignaba Sam, Bernard Zouma, François Zougmoré
This manuscript presents a simple method for excess minority carriers’ lifetime measurement within the base region of p-n junction polycrystalline solar cell in transient mode. This work is an experimental transient 3-Dimensionnal study. The magnitude of the magnetic field B is varied from 0 mT to 0.045 mT. Indeed, the solar cell is illuminate(...)
Carrier Lifetime, Fitting, Magnetic Field
ARTICLE
THEORETICAL AND EXPERIMENTAL ANALYSIS OF A BOOST CONVERTER
Badiane Modou, Honadia Prince Abdoul Aziz, Barro Fabé Idrissa
A theoretical and experimental study of a conventional boost converter is presented. Based on the real behavior of the components, the conventional boost converter model dealing with both inductive and capacitive losses as well as switching losses is introduced. From this model, the detailed analytical expressions of the voltage gain factor a(...)
Duty cycle, gain factor, efficiency, ESR
COMMUNICATION
Étude de la convection naturelle dans une cavité différentiellement chauffée
KONFE Amadou
On étudie la convection naturelle laminaire dans une cavité carrée rempli d’air dont les deux cotés
verticales sont soumises à une différence de température, tandis que les deux autres horizontaux sont
adiabatiques. Les températures de la paroi chaude et froide sont maintenues constantes. Nous avons
présenté une étude dynamique et thermique(...)
Convection naturelle, cavité carrée/, couplage, convection naturelle, rayonnement
ARTICLE
Vers une génération plus « verte » de biodiesels
Gilles Vaitilingom, Zéphirin Mouloungui, Anthony Benoist, François Broust, Tizane Daho etBruno Piriou
Dans le monde, le pétrole assure 96 % des besoins des transports, lesquels mobilisent 65 % du pétrole consommé et participent à hauteur de 20 % aux émissions de CO 2 . Afin de réduire la consommation de ressources fossiles, une des alternatives est notamment l’utilisation de « biocarburants ». Ces biocarburants sont classés en trois génération(...)
Mots clés non renseignés
ARTICLE
Towards a "greener" generation of biodiesels
Gilles Vaitilingom, Zéphirin Mouloungui, Anthony Benoist, François Broust, Tizane Daho3 etBruno Piriou
Dans le monde, le pétrole assure 96 % des besoins des transports, lesquels mobilisent 65 % dupétrole consommé et participent à hauteur de 20 % aux émissions de CO2. Afin de réduire la consommationde ressources fossiles, une des alternatives est notamment l’utilisation de « biocarburants ». Cesbiocarburants sont classés en trois générations suc(...)
biodiesel / CAS / résidus / déchets
ARTICLE
NIGHT-SKY BRIGHTNESS IN BURKINA FASO: OUAGADOUGOU LIGHT POLLUTION ASSESSMENT AND IMPACT ON THE STARRY SKY OBSERVATION
Sié Zacharie KAM, Moussa SOUGOTI , Sidiki ZONGO , Issoufou OUARMA , Ollé Zachée KAM , Jean KOULIDIATI & Antoine BERE
The quest for well-being and improvement of the populations living conditions in the borders of the big cities have changed habits in terms of lighting. The use of LED lamps and the reduction in the cost of photovoltaic panels, have allowed easy access to electricity nowadays. The lack of education on the nature of outdoor lighting has unfortu(...)
Astronomy, Light Pollution, Dark sky, Ouagadougo
ARTICLE
2D Modeling of Solar Cell Radial Junction: Study of Carriers Charge Density and Photocurrent Density in Static Mode under Monochromatic Illumination
Moussa Ouédraogo, Raguilignaba Sam, Alain Diasso, Bernard Zouma3 François Zougmoré
A theoretical study of a polysilicon solar cell with a radial junction in static regime under monochromatic illumination is presented in this paper. The junction radial solar cell geometry is illustrated and described. The carriers’ diffusion equation is established and solved under quasi-neutral base assumption with boundaries conditions and(...)
Electrons Density, Holes Density, Holes Photocurrent
ARTICLE
Evaluation of Wind Energy Potential in a Sahelian Zone: A Case Study of Ouahigouya, Burkina Faso
Drissa Boro1,*, Windmanagda Sawadogo2, Hagninou Elagnon Venance Donnou3, Alfred Bayala1, Florent P. Kieno1, Joseph Bathiebo1
This study investigates the characteristics of the wind energy potential in Ouahigouya, Burkina Faso. For this purpose, eleven-years data (2006-2016) of wind speed (at 10 m above ground level (AGL)) and surface temperature data from Burkina Faso meteorological agency and wind speed (50 m AGL) from the NASA were used. Based on the mean vertical(...)
wind potential, Weibull distribution, power density
ARTICLE
Synthesis of a cleaner potassium hydroxide-activated carbon from baobab seeds hulls and investigation of adsorption mechanisms for diuron
L.M. Ndjientcheu Yossa, S.K. Ouiminga , S.S. Sidibe, I.W.K. Ouedraogo
Lignocellulosic agricultural residues are worldwide used for the production of activated carbons with purpose of eliminate a large range of pollutants such as diuron, a very per- sistent herbicide found in streams. This work studies the adsorption of diuron in aqueous solution on two different activated carbons, a commercial activated carbon a(...)
Baobab seed hulls, Activated carbon, Porosity, Adsorption
ARTICLE
NUMERICAL STUDY OF HEAT AND MASS EVAPORATION-BASED BASED TRANSFERS IN A LARGE DIMENSION RESERVOIR: THE INFLUENCE OF METEOROLOGICAL PARAMETERS AND RAYLEIGH
BAYALA Alfred1, TUBREOUMYA G. Christian3, BORO Drissa1, IMBIDA B. Kossi1, BADO Nebon1, ZEGHMATI Belkasem2, KIENO P. Florent1 and BATHIEBO Joseph
A numerical study of heat and mass transfers in a large water reservoir is presented. This water reservoir is being considered as a parallelepiped tank which vertical and lower walls are adiabatic and impermeable. The equations that govern the natural convection in water are solved using the finite volume method and Thomas algorithm. The adequ(...)
Numerical Study, Evaporation, Meteorological Parameters, Natural Convection
ARTICLE
Effect of Ar Gas Pressure on LSPR Property of Au Nanoparticles: Comparison of Experimental and Theoretical Studies
Serap Yigit Gezgin, Abdullah Kepceoglu , Yasemin Gündogdu , Sidiki Zongo , Anna Zawadzka, Hamdi ¸Sükür Kiliç and Bouchta Sahraoui; Nanomaterials
In this study, the thin films were produced by using pulsed laser deposition (PLD) technique from gold (Au) nanoparticles deposited on two kinds of substrates under different argon (Ar) gas pressure. Microscope glass slides and silicon (100) wafers were used as amorphous and crystal substrates. The films were deposited under 2 × 10−3 mbar, 1 ×(...)
gold nanoparticle, thin film, pulsed laser deposition, surface plasmon resonance simulation
ARTICLE
Temperature Effect on Light Concentration Silicon Solar Cell’s Operating Point and Conversion Efficiency
Mahamadi Savadogo, Boubacar Soro, Ramatou Konate, Idrissa Sourabié, Martial Zoungrana, Issa Zerbo, Dieudonné Joseph Bathiebo
It is well known that temperature acts negatively on practically all the parameters of photovoltaic solar cells. Also, the solar cells which are subjected to particularly very high temperatures are the light concentration solar cells and are used in light concentration photovoltaic systems (CPV). In fact, the significant heating of these solar(...)
Temperature, Conversion Efficiency, Light Concentration, Maximum Power Point, Junction Dynamic Velocity
ARTICLE
Modélisation du rayonnement solaire global incident sur un plan horizontal et incliné par quatre modèles semi-empiriques sur le site de la ville de Ouagadougou
Ouédraogo Souleymane , Zongo S. Augustin, Nzihou Jean-Fièle , Daho Tizane,and Béré Antoine
Les paramètres météorologiques et radiométriques tels que le rayonnement solaire influencent fondamentalement la rentabilité et la performance des systèmes de conversion de l’énergie solaire. L’optimisation des convertisseurs d’énergie solaire dépend du modèle de rayonnement solaire utilisé. Cette étude porte sur l’estimation du rayonnement so(...)
olar irradiation, Semi empiricmodel, Estimation, Liu and Jordan model, Capderou model, Eufrat model, r. sunmodel