The Utilization of Rice Husk with Furnace Modification Based on the Heat Exchanger Pipe Type for Sustainable Energy of Traditional Drying

A sustainable energy source that is cheap and easy to obtain is rice husk biomass. This study therefore aims at evaluating the utilization of rice husk with furnace modification based on heat exchanger pipe for sustainable energy of traditional drying. The utilization is through thermal conversion of biomass using a furnace and heat exchanger. The furnace is a burning medium of biomass that contains heat exchanger pipes. Furnace modification is based on the type of heat exchanger pipe, which includes copper, stainless and black steel. The furnace model contains a wall consisting of 468 holes with a 5cm distance between the holes and a diameter of 1 cm. The diameter of the ash hole is 12mm and the furnace dimensions are 500 mm x 500 mm x 800 mm with a heat exchanger pipe of diameter 1 inch. The test results on 4 kg of corn carried out for 400 minutes showed that the rice husk utilization provided the optimal drying temperature. The average drying temperature for copper pipes are 82.47oC (shelf 1), 77.54oC (shelf 2), 69.03oC (shelf 3), and 62.49oC (shelf 4); for black steel pipe, the average drying temperature are 75.73oC (shelf 1), 72.98oC (shelf 2), 62.33oC (shelf 3), and 55.96oC (shelf 4) and that of stainless steel pipes are 71.89oC (shelf 1), 64.23oC (shelf 2), 59.91oC (shelf 3), and 51.69oC (shelf 4).