抄録
In this study, we used a small scale downdraft gasifier of char. The result shows that calorific value of produced gas per unit time is increased as air ratio is increased from 0.35 to 0.45. Calorific value of produced gas per unit time is far larger by above 40% when the air is supplied into the char bed than gaseous layer. In case the air is supplied into char bed. calorific value of produced gas per unit time is increased as temperature of air and the mass of water vapor supply is increased.
