Abstract
Gasification is the technology of converting biomass fuel to a gaseous fuel. In this study, the experiments on a gasifier operation were conducted to investigate the effect of superficial gas velocity (SV) on the performance of a rice husk downdraft gasifier. From the experiment, equivalent ratio and gasification temperature increased with the increasing of SV and influenced producer gas composition. The variation of gas composition affected producer gas higher heating value and gasifier efficiency. The average producer gas higher heating value reached the maximum value at 3.87MJm-3 when SV was 0.043ms-1 and gasifier efficiency reached the maximum value at 60.9% when SV was 0.061ms-1.
