Severity of Cracks Growths on Static Design of a Three Bladed Savonius Wind Turbine Using SolidWorks Simulation
Abstract Modern vertical axis wind turbine is a promising technology, appropriate for small scale applications in urban areas and isolates sites for different uses. Including pumping water, producing electrical power, passive starting others turbines and purposes. The Savonius wind turbine is a robust and reliable mechanical device, easy to build, produces less noise. The formation and growths of cracks in this system reduces its stiffness and yield strength, which lead to a poor performance ...
Modal Analysis of aSmall H-Darrieus Wind Turbine Based on 3D CAD, FEA
Abstract: Rotary machines have many rotating structures necessity design-optimization. Their structure motions are controlled at low-frequency by rigidity, at high-frequency by inertia and at resonance level by damping. Using a modal model, dynamic design of the structure developed can be predicted, analyzed and improved. Recently, H-Darrieus wind turbine (HDWT) has received considerable attention due to its inherent structural characteristics. This machine intends a promising design of a re...
Biodiesel from Restaurant Cooking Oils Using Trans-esterification Process
The biodiesel prepared from Restaurant Cooking Oils (RCO) using trans-esterification process as well as the influence of major operating parameters on the reaction including catalyst amount, temperature, and alcohol/oil ratio have been studied in the present paper. Experimental results showed a good effectiveness of biodiesel yield 93% based on optimum conditions catalyst 1%, alcohol/oil mass ratio 2/5 under 40°C.
Improvement of the Physicochemical and Microbiological Quality of the Date’s Fruit Product in South Algeria by Adding Rosemary Herb
The dates are used to prepare several food products, among which the Btana is a best conservation form commonly practiced in the South-west area of Algeria. The peasants add during its preparation one or more aromatic herbs according to the choice and the areas. The present research aims relates to the study of the effectiveness of the methods used from the microbiological quality point of view and the determination of the effect of the plants added during the Btana preparations, for that...
Analytical Modeling and Optimization of a Solar Chimney Power Plant
Wind and solar resources are diluted and intermittent on the earth; their combination allowed increasing their availability and stability. At great scale, the use of Solar Chimney Power Plant (SCPP) technique constitutes a promising alternative to fossil fuel for generating electrical power particularly in rich regions of natural resources such as solar, wind, terrain, built material, water…etc.). Recently, various research works investigate the design and optimization of thesesystems ...
Generation of bioethanol from common date by-products, “Teggaza and Lebghel” in Southern Algeria
Date by-products constitute the principal food for the oasis populations in Middle East and North Africa. Dates contents consist of 70 to 80% of reducing sugars, and do not require an intensive energy and labour for thermophysical pre-treatment. They can serve as a good feedstock for bioethanol generation through fermentation and distillation. Algeria is among the top sixth producers of dates in the world with more than 250,000 tons/year; from these, more than 30% can be lost for dif...
Bioethanol production from date palm fruit waste fermentation using solar energy
Every year, more than 236,807 tons, equivalent to 30% of date-palm fruits produced in Algeria, is lost during picking, storage, and commercialization processes. Gasification of this huge biomass can generate biogas such as bioethanol, biodiesel, gasoline and other useful substances. Bioethanol is becoming the main biofuel produced by chemical synthesis or anaerobic fermentation from biomass and is significant for industrial development, investment, and use. It is eco-friendly, moderately cost...