Climate change is becoming a major issue for agriculture and the well-being of farmers. The objective this article to identify analyze production factors that may influence competitiveness level agricultural operations, as well establish structural functional typology these farms. Using Principal component analysis (PCA) combined with hierarchical ascending classification (HAC) on 250 farmers, study was able set farms typology. Furthermore, variance econometric models (linear et quadratic)...

This article presents a modelling study of external magnetic field effect on bifacial silicon solar cell's electric power and conversion efficiency. After the resolution magnetotransport equation continuity excess minority carriers, we calculate photocurrent density photovoltage then deduce before discussing influence those electrical parameters. Using curves versus junction dynamic velocity determine maximum power, operating point cell, efficiency according to intensity. The numerical data...

The present paper is about an investigation on the temperature dependence of efficiencies individual energetic process (Absorption efficiency, Thermalization Thermodynamic efficiency and Fill factor) overall conversion a polycrystalline silicon solar cell which has been investigated in range 10–50 °C. All these decrease versus increase temperature. However, thermodynamic fill factor are more sensitive to than absorption thermalization efficiencies. degradation explained by open circuit...

The aim of this work is to present a theoretical study external magnetic field effect on bifacial silicon solar cell’s electrical parameters (peak power, fill factor and load resistance) using the J-V P-V characteristics. After resolution magneto transport equation continuity excess minority carriers in base cell under multispectral illumination, photo-current density photovoltage are determined curves plotted. Using simultaneously curves, we determine, according intensity, peak photocurrent...

One-dimensional study of both electronic and electrical parameters a silicon solar cell in the presence or not an electric field, magnetic electromagnetic field does take into account grain size boundary recombination velocity. A three-dimensional study, on contrary, takes those factors account. However, poses problem attenuation wave polycrystalline as well issue finding expressions its components. This aimed to solve these issues by considering radio waves, which are becoming more present...

In this work, a modeling study of the effect junction quality on performance silicon solar cell is presented. Based one dimensional cell, continuity equation excess minority carriers solved with boundary conditions taking into account intrinsic recombination velocity and led to analytical expressions photocurrent density, photovoltage electric power. The or photocurrent, power, exhibited we determine maximum dynamic at power point conversion efficiency according cell. From lost junction,...

This manuscript is about a theoretical modelling of conversion efficiency improvement typical polycrystalline Si solar cell in 1D assumptions. The brought by the increase collection minority carriers charge excess. consequence influence an electric field provided use open circuit photovoltage another silicon cell. We assume that it integrated two cells to system. first provides which connected aluminum planar armatures creating capacitor. second placed under uniform created between...

This article presents a one dimensional modeling of the influence electromagnetic waves on electric power delivered by silicon solar cell under monochromatic illumination in steady state. The are produced an amplitude modulation radio antenna 2MW radiation and located at variable distance [10m,+∞[. magnetotransport continuity equations excess minority carriers solved with boundary conditions led to new analytical expressions carrier’s density, photocurrent photovoltage depending field...

We introduce a kinetic formulation for scalar conservation laws with nonlocal and nonlinear diffusion terms. deal merely L1 initial data, general self-adjoint pure jump Lévy operators, locally Lipschitz nonlinearities of porous medium kind possibly strongly degenerate. The cornerstone the uniqueness proof is an adequate explicit representation dissipation measure associated to diffusion. This Lloc1 function in our framework. Our approach inspired from second order theory unlike cutting...

A Ring Array Concentrator - RAC was conceived, realized and tested for cooking purpose in Burkina Faso where irradiation flux is about 5.5kWh/m2/day. The RAC, having a useful aperture area of 1.692 m2, built with five (5) imbricated conical concentrators. conceived has mean geometric concentration ratio evaluated to 38, allowing transmitted temperature 330∘C the receiver's fluid, supposing possible time 6 hours theoretical efficiency from 36% 40%. This therefore suitable cooking, frying...

In this work, a one dimensional approach is presented for modelling the effect of incidence angle, varying from 0 rad to π/2 rad, and intensity radio waves on performance polycrystalline silicon solar cell under constant multispectral illumination.By solving continuity equation in steady state, we derived expression density excess minority carriers, photocurrent density, photovoltage, electric power their dependence angle electromagnetic field analyzed.Using curves versus junction dynamic...

This paper deals with the climatology of aerosols in West Africa based on satellite and situ measurements between 2001 2016 covers four sites Sahelian zone. There are indeed Banizoumbou (13.541°N, 02.665°E), Cinzana (13.278°N, 05.934°W), Dakar (14.394°N, 16.959°W) Ouagadougou (12.20°N, 1.40°W) located respectively Niger, Mali, Senegal Burkina Faso. Thus, an intercomparison observations shows a good correlation MODIS AERONET coefficient R = 0.86 at Cinzana, 0.85 Banizounbou, 0.84 low 0.66...

An indirect solar dryer, functioning on a forced convection mode, had been fabricated and thermally evaluated for the city of Ouagadougou located in Sub-Saharan region with latitude angle 12.23° Dimensioned 4 kg okra drying 16 hour time, it was laid three trays. The extractor powered by 6W autonomous PV panel working along sun. hot air, produced 0.7m2 collector inclined 45° facing south, circulates from top to bottom chamber. Results showed that extractor's speed unexpectedly quasi constant...

The characterization of the performances a PV cell is linked to intrinsic factors this cell. It therefore important for us identify favorable or unfavorable conditions that affect performance cells. from perspective it seems judicious study simultaneous influence heating base and an external electric field on under intense illumination 50 suns. Two phenomena contribute which due transfer by conduction solar radiation energy received surface heat generated inside various movement...

The present work analyzes the energy production of three 50kWp photovoltaic (PV) power plants which are placed in climate zones. Sudano-Sahelian and Sudanian climates have lower average temperatures than Sahelian environment. climate, next zone, finally region, best performance for PV plants. silicon cells may suffer due to temperature. climatic zone experiences its highest levels output between April October longer sunshine hours a reduction sand dust. In is at peak May October. generation...

Abstract The present paper provides a study about the capacity of crystalline silicon photovoltaic (PV) cell to resist well electromagnetic field effects. novelty this is found in identification better doping rates range where PV can against deterioration its performances due an field. After fundamental equations solve, electrical parameters and individual energetic processes have been analysed. estimated current decreases weakly when base dopant level (N B) increase from 10 14 cm −3 17...

The quadratic boost is studied under its real model. equations, of the continuous conduction mode, descriptive this model are established. From these expressions voltage gain and efficiency extracted. These two quantities plotted as a function duty cycle in order to appreciate them different operating points transistor. values components have also been extracted for fabrication prototype converter. Thanks set experimental measurements at input well output converter, could be observed. were...

In Burkina Faso, as in other Sahelian countries, natural pastures are a key element managing livestock productivity, they the main source of feed. This is why, after droughts 1970, government Faso created pastoral zones to boost productivity. However, results this project remain unsatisfactory. study therefore aims assess resources by analysing dynamics landscapes Niassa zone. To end, remote sensing and perception surveys pastoralists were used. From 2000 2020, land use shifted away from...