Effect of variation of mixture (wood gelam+rice husk) on biopellet on the value of temperature, rate, and pressure of combustion

Abstract

The increasing demand for energy causes the depletion of fossil fuels. To overcome this, it is necessary to utilize biomass and biomass waste. This study aimed to simulate the effect of bio-pellet density on the temperature, rate, and pressure of combustion made from a mixture of gelam wood and rice husk. The method uses ANSYS simulation with a literature review. The results showed that the increasing composition of rice husks affected the decreasing combustion rate. It was due to the calorific value of the pellets making up the material, where the lower calorific value of rice husk affects the combustion rate. Pellets with a large density affect the combustion rate, extending the burning time. The pressure of pellet molding influences the density of pellets; the greater the pressure makes the fuel denser and denser. The highest combustion air pressure occurs at 100% gelam composition and the lowest at 100% husk composition. It shows that adding rice husk composition reduces the combustion pressure, and vice versa applies to adding gelam composition.