(70d) Energy and Cost Requirement to Produce Rice Husk Briquette Using Different Screws and Heating Systems

A research was conducted to determine the energy and cost requirement to produce rice husk briquettes (RHB) using different screws (new screw, locally made screw and screw repaired by welding) and die heating systems (electric heating coil made by pipe, kerosene burner, and electric heating coil made by puti). The production rates of RHB were determined at every hour by operating different combination of screw and heating system. The energy consumption and cost were also calculated for producing briquette. The production rate was the highest (110 kg/hr) and the cost was the lowest (1.69 Tk./kg) for repaired screw and pipe coil heating system. It was also observed that the life of screw was in the highest (8-10 hours) position in case of repaired screw. It was also observed that the energy consumption was the lowest (13.55 kW-hr) position in case of repaired screw and pipe coil die heating system. It was in the highest position (17.42 kW-hr) when the heating system was kerosene burner. Therefore, based on the lowest energy consumption and cost to produce rice husk briquette, the best suitable combination to produce RHB was repaired screw and electric pipe coil heating system.