Papers by Alphonse Kouadio Diango
HAL (Le Centre pour la Communication Scientifique Directe), Apr 22, 2017
Asian journal of applied sciences, Nov 1, 2011
Dans le contexte actuel de rechauffement climatique lie a une consommation importante de combusti... more Dans le contexte actuel de rechauffement climatique lie a une consommation importante de combustibles d’origine fossile, il est imperatif d’optimiser le fonctionnement des machines thermiques afin de reduire les consommations et ralentir un tant soi peu la degradation de notre environnement. L’optimisation du fonctionnement des machines, passant par la maitrise des performances (rendement et puissance), cette etude a pour objectif de proposer un indicateur pour caracteriser l’efficacite energetique des petites machines thermiques. En effet, l’efficacite energetique des turbomachines thermiques est souvent caracterisee par le rendement par rapport a l’isentropique dont la reference est sans echanges thermiques (adiabatiques). Or les turbomachines thermiques a geometrie reduite fonctionnant a des temperatures elevees (plus de 500°C) ne peuvent etre considerees comme etant adiabatiques [1, 2, 3, 4, 5]. En plus du rendement par rapport a l’isentropique, le rendement polytropique [7] et ...
Refining Biomass Residues for Sustainable Energy and Bioproducts, 2020
Abstract This chapter assesses the environmental and economical performances of Jatropha biodiese... more Abstract This chapter assesses the environmental and economical performances of Jatropha biodiesel used as fuel by a diesel generator supplying electricity to the Ivorian remote locality of 500 inhabitants. It begins with a presentation of the Ivorian electric context and the Jatropha plant from which biodiesel is produced. Then, it presents the different assumptions adopted and the tools used, namely, the life cycle assessment (LCA), the calculation of the power of the diesel generator, and the calculation of the electricity production cost. By the end of the chapter, the results obtained from the LCA, the calculation of the diesel generator power, and the calculation of the cost of electricity generation from Jatropha biodiesel are presented. Of course, an interpretation of these results is carried out in order to draw the conclusions. The main results obtained at the end of this study are as follows: • One kilowatt-hour of electricity generation from Jatropha oil is more environmental efficient than the generation of 1 kW h of electricity from conventional diesel. In fact, there is no impact on global warming, no eutrophication, and there is the same impact on nonrenewable energy depletion with the use of conventional diesel. • The cost of electricity generation from Jatropha oil for an Ivorian village of 500 people (0.1€/kW h) is better than the fixed electricity generation cost from biomass (0.2€/kW h) but on the condition of developing a market for the oil cake.
This work presents the results of a study to optimize the production of electricity, by hybrid sy... more This work presents the results of a study to optimize the production of electricity, by hybrid system Photovoltaic – Diesel – Batteries, to power the village of Kalakala in the north of Côte d'Ivoire. The study site is an isolated rural community, powered by a diesel generator. It is located in northern Côte d'Ivoire. HOMER software has been used for system simulation and optimization. The result of this study is then compared to those of PV Batteries and diesel alone systems. From the results of the simulations, it appears that the optimal combination of the hybrid system includes a diesel generator of 50 kW, a photovoltaic field of 46 kW, 10 batteries of 48V and a converter of 100 kW. With a photovoltaic penetration rate of 52.7%, this system, compared to the photovoltaic batteries system, reduces the photovoltaic field by 56%, the number of batteries by 61.5% and increases battery life by 42.84%. Compared to diesel alone, it reduces fuel consumption and the quantity of CO...
International Journal of Renewable Energy Development
This work presents the results of a study to optimize the production of electricity, by hybrid sy... more This work presents the results of a study to optimize the production of electricity, by hybrid system Photovoltaic – Diesel – Batteries, to power the village of Kalakala in the north of Côte d'Ivoire. The study site is an isolated rural community, powered by a diesel generator. It is located in northern Côte d'Ivoire. HOMER software has been used for system simulation and optimization. The result of this study is then compared to those of PV - Batteries and diesel alone systems. From the results of the simulations, it appears that the optimal combination of the hybrid system includes a diesel generator of 50 kW, a photovoltaic field of 46 kW, 10 batteries of 48V and a converter of 100 kW. With a photovoltaic penetration rate of 52.7%, this system, compared to the photovoltaic - batteries system, reduces the photovoltaic field by 56%, the number of batteries by 61.5% and increases battery life by 42.84%. Compared to diesel alone, it reduces fuel consumption and the quantity o...
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Papers by Alphonse Kouadio Diango