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Ibrahim H.,TechnoCenter eolien | Lefebvre J.,University of Quebec at Rimouski | Methot J.F.,University of Quebec at Rimouski | Deschenes J.S.,University of Quebec at Rimouski
2011 IEEE Electrical Power and Energy Conference, EPEC 2011 | Year: 2011

In remote areas and small islands, diesel generators are often the main source of electric power. A hybrid system of wind power and genset can benefit islands or other isolated communities and increase fuel savings. In order to understand the effect of wind power regarding to reducing the rate of power supplied by the diesel generator especially when the wind turbine and genset operate simultaneously, we studied a no-storage wind-diesel system by using a power flow model tested on different operation modes of the hybrid system. © 2011 IEEE.

Ibrahim H.,TechnoCenter eolien | Lefebvre J.,University of Quebec | Methot J.F.,University of Quebec | Deschenes J.S.,University of Quebec
2011 IEEE Electrical Power and Energy Conference, EPEC 2011 | Year: 2011

Various aspects must be taken into account when working with wind-diesel hybrid systems for the generation of electricity especially in remote areas. Reliability and cost are two of these aspects. On the other hand, various mathematical models of the elements that make up these systems can be used, as well as various design and simulation models. This paper will review the simulation and design models of the hybrid systems that have been used up to this moment in time, indicating which tools have been developed for this purpose. © 2011 IEEE.

Paradis P.-L.,Ecole de Technologie Superieure of Montreal | Ramdenee D.,Institute Technologique Of Maintenance Industrielle | Ilinca A.,University of Quebec at Rimouski | Ibrahim H.,TechnoCenter eolien
International Journal of Simulation and Process Modelling | Year: 2014

The use of servers for computational and communication control tasks is becoming more and more frequent in industries and institutions. Ever increasing computational power and data storage combined with reduction in chipsets size resulted in the increased heat density and need for proper configurations of the server racks to enhance cooling and energy efficiency. While different methods can be used to model and design new server centres and optimise their configuration, there is no clear guideline in the literature on the best way to design them and how to increase energy efficiency of existing server centres. This paper presents a simplified yet reliable computational fluid dynamics (CFD) model used to qualitatively evaluate different cooling solutions of a data centre and proposes guidelines to improve its energy efficiency. The influence of different parameters and configurations on the cooling load of the server room is then analysed. © 2014 Inderscience Enterprises Ltd.

El-Jamal G.,Saint - Joseph University | Ibrahim H.,TechnoCenter eolien | Ghandour M.,Lebanese University
2014 International Conference on Renewable Energies for Developing Countries, REDEC 2014 | Year: 2014

Fossil energy is a major problem that disturbs the world. So replacing this kind of energy with another cheapest, harmless and that last forever become a strategic question. A big question still running the minds of the workers and investors in this sector, which type of renewable energy we should apply? At which cost? What will be the payback period and the return on investment? The aim of this paper is to highlight on the reduction of the energy profile for facilities from the Lebanese context by a case study for a residential complex. © 2014 IEEE.

Ibrahim H.,TechnoCenter eolien | Ghandour M.,Lebanese University | Dimitrova M.,TechnoCenter eolien | Ilinca A.,University of Quebec at Rimouski | Perron J.,University of Quebec at Chicoutimi
Energy Procedia | Year: 2011

Wind energy is the current "star" in the field of renewable energy for electrical production. Still, the power generated by wind turbines over time is characteristically uneven due to the unpredictable nature of their primary source of power. This only increases the problems inherent to the integration of a great number of wind turbines into power networks, making their contribution rather difficult to manage (regulating voltage and frequency, wind-farm operation, etc.) The integration of wind power in the power system is now an issue in order to optimize the utilization of the resource and in order to continue the high rate of installation of wind generating capacity, which is necessary in order to achieve the goals of sustainability and security of supply. This paper presents the main technical challenges that are associated with the integration of wind power into power systems. These challenges include effects of wind power on the power system, the power system operating cost, power quality and power imbalances (stability of grid). In addition, the paper presents the solutions will be offered to improve the management of wind power generation and increase its penetration in the overall electrical energy production. © 2011 Published by Elsevier Ltd.

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