Energy scarcity is a global issue. Pellet fuel is thus classified as a renewable
energy source that is gaining popularity for use in cooking. As a result, developing
biomass-based energy is critical for maximum efficiency. This research investigates
the appropriate proportions of briquette charcoal from coconut husk residue, as
well as to design, construct, and test the efficiency of a briquette charcoal press
using this residue. The experimental results showed that the proportion of coconut
shell: coconut husk, rice husk, cassava starch, and water is 20:50:10:15:5. The best
properties, according to ASTM standards, are achieved with a moisture content of
9.41 ± 0.02 % Wt., which is less than 10% by weight. The standard weight contains
the highest stable carbon content at 61.26 ± 0.36 % Wt. and the lowest ash content
after combustion at 12.16 ± 0.10 % Wt. Additionally, it has a high calorific value
of 5,728 ± 143 Kcal/kg, which exceeds the standard of 5,000 calories per gram.
The charcoal briquette machine has dimensions of 82 cm in height, 70 cm in width
at the front, and 55 cm on the side. It is equipped with a 1/4 horsepower motor
capable of rotating at 1,440 revolutions per minute (RPM) with a 1-inch pulley
with an 8-inch centerline passing through and a 1-inch pulley with a 2.5-inch
centerline passing through. The performance of the charcoal briquette machine
was tested at a rotational speed of 403.2 RPM. When tested, the machine’s
performance was found to be comparable to the standard, indicating its suitability
for use in the study and development activities of the fragrant coconut learning
center group moving forward.