Candlenut shell contained organic compound, such as hemicelluloses, cellulose, and lignin which can be converted to solid, liquid, and gaseous products by thermochemical methods. One of the products is charcoal. One of the tool that can carbonize the candlenut shell is candlenut shell carbonization tool using a vertical multi chamber. The tool can carbonize candlenut shell without having any additional energy. Some variables from the tool has been identify from the previous research, such as its maximum capacity and process time, while its charcoal yield remains unknown. Therefore, this research is aimed to determine the charcoal yield that can be produced by candlenut shell carbonization tool using a vertical multi chamber. Three carbonization experiments were performed with 8 kg candlenut shell filled in every carbonization chamber (CC). The carbonization process temperature was measured for each chamber by using a thermocouple in order to know the effect of temperature toward charcoal yield. As the result, the average candlenut charcoal yield that can be produced by candlenut shell carbonization tool using a vertical multi chamber is 24.99 %. Every chamber was experiencing deferent capability in producing charcoal. CC3 is the highest charcoal yield chamber with 31.38 % and then followed by CC2 with 25.04 % and CC1 with 18.79 %. Based on temperature that experiencing by every chamber, it indicates that the temperature has a significant impact on charcoal yield. When the temperature high, the charcoal yield is low and also goes the same in contrary. Therefore, candlenut shell carbonization tool using a vertical multi chamber has capability in producing candlenut shell charcoal at 24.99 % yield.
