Design, Fabrication and Test Performance of a Modified Rice Hull Gasifier Stove

Abstract

The focus of this study is to design, fabricate and test the performance of the modified rice hull gasifier stove based on the original design of Engr. Alex Belonio of the Central Philippine University. Modification was made by increasing the size of the reactor, the part where rice hulls are placed and burned. This reactor is cylindrical in shape having a diameter of 170 mm and a height of 700 mm. The cylinder is made of an ordinary galvanized iron sheet gauge no. 16, with an annular space of 250 mm preventing heat loss in the gasifier. At the lower end of the reactor is a G.I. sheet fuel grate which is used to hold the rice hulls during gasification. Based on the actual test conducted for one loading of rice hull (1.3 kg) the stove can cook rice and fish within an average of 43.08 minutes. Likewise, cooking pork “sinigang” can only consume an average time of 35.83 minutes; and that the remaining fuel in the stove can still simmer or boil one liter of water within an average of 7.47 minutes. For an investment, the payback period of the project is six months.