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Experimental evaluation of a 35 kVA downdraft gasifier

Frontiers in Energy 2013年第3期7卷 300-306页

作者： Ashok Jayawant Rao KECHE Gaddale AMBA PRASAD RAO Department ol Mechanical Englneenng National Institute of lecnnology Warangal 506004 (AP) India

Energy conversion systems based on biomass are particularly interesting because biomass utilization effectively closes the carbon cycle besides achieving selfsustainability. Biomass is particularly useful for highly populated and agriculture dependent economic nations like China and India. A compact and cost effective downdrafl gasifcation system was developed. The present paper describes an experimental investigation on a biomass based gasifier engine system with a capacity of 35 kVA for power generation application. The problem of cooling and cleaning the hot and dirty gas from the gasifier has been satisfactorily solved by the effective cooling and filtration system. The gasifier developed is observed to be operation friendly. The quality of gas was evaluated in terms of its composition, conversion efficiency and total particulate matter. The maximum output of the power plant was obtained at the combustion zone temperature of 850~C. The experimental investigations showed that the percen- tage reduction in total particulate matter is 89.32%. The conversion efficiency of the biomass gasifier is found to be dependent on the operation conditions and fuel properties of the gasifier. The optimum value of equivalence ratio was observed to be 0.3134 for achieving the maximum gas conversion efficiency of the present gasifier configuration.

关键词： biomass gasification producer gas equivalence ratio total particulate matter conversion efficiency of gasifier

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