Abstract | The caloriï¬c value (or heating value) is the standard measure of the energy content of fuel. In order to determine whether certain material can be used for solid fuel, the calorific value of the material needs to be studied. Hence, the objective of this study is to evaluate the effect of portions and particle sizes on the calorific value of oil palm fronds. The bomb calorimeter AC 500 was used to measure calorific value of oil palm fronds base on ASTM D58565-07 standard. The average calorific value of the bottom, middle and top portion of oil palm fronds for smaller particle size (0.5mm) were 17.12±0.06 MJ/kg, 16.88±0.12 MJ/kg, 16.25±0.08 MJ/kg respectively. On the other hand, the average calorific value of the same portion of oil palm fronds for bigger particle size (1.5mm) were 17.77±0.07 MJ/kg, 17.54±0.07 MJ/kg, 17.25±0.03 MJ/kg respectively. The calorific value of oil palm frond has increased from the bottom portion to the top portion for both small and big particle sizes, and the differentiation is significant (p<0.01). Based on the results of calorific value, it can be concluded that oil palm fronds has high calorific value and has the potential to be utilised as solid fuel. |