Browsing by Author "Shiferaw, Yohannes"

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    Design and Performance Evaluation of Biomass Gasifier Stove
    (Addis Ababa University, 2011-06) Shiferaw, Yohannes; Worku, Teshome (PhD)
    With respect to global issues of sustainable energy and reduction in greenhouse gases, biomass energy as one of the key sources of renewable energy is getting increased attention as a potential source of energy in the future. This work has been carried out to develop, design and manufacture an applicable type biomass gasifier stove for the production of producer gas using locally available biomass fuels like bamboo, eucalyptus and prosopies Juliflora. The gasifire is produced and tested on three trial test runs by conducted caloric value, moisture content and ash content at dry base of each biomass is measure, and is conducted at different time with bamboo, eucalyptus and prosopies Juliflora biomass feeding. First batch fed gasifier reactor having an internal diameters of 39cm was designed and fabricated, operating period of 25-35min, amount of biomass fuel consumed of 4.5kg, temperature at various points of 560 – 7350C were monitored and analyzed. Important parameter such as: manufacturing materials and technique, operation, fuel type, smoke and primary and secondary air inlet were evaluated using water boiling test and controlled cooking test methods by actually boil and cooking food. The results obtained from this study shows that the gasifier performance and operating conditions are good with thermal efficiency around 31.8%. So the out put can provides modern energy services for basic needs and productive applications in the areas. Key words: Biomass, gasification, producer gas, fuel efficiency, ash.