DESIGN OF GRASS BRIQUETTE MACHINE
In contemporary times, increase in population has placed a huge burden on fuel wood and is now forcing the growing population to engage in deforestation. Of the vast energy resources, non-renewable fossil energy still dominates the consumption chart in Nigeria coupled with its increasing costs which is going beyond the reach of low income earners. In this study, briquette machine design was considered for processing biomass of grass origin. The machine operations include pulverization, compaction and extrusion of the briquettes. Power of 1hp motor is recommended for effective size reduction using a disc plate. The design of the shaft is on the basis of strength, rigidity and stiffness to overcome distributed weight of dried grass stocks. The machine requires a shaft of dimeter 20mm to drive the grinding plate. The dynamic load on the bearing is 8.9kN. The diameter of the screw shaft which is essentially the briquetting screw press, is 40.8mm. The dynamic load on the bearing is 11.42kN, power of the electric motor required to convey, compact and extrude the briquette fuel is 7hp.Resultant fuel briquettes from grass represents a good alternative to fuelwood which can be used for heating, cooking and for firing of boilers either for allied products or for power generation.