The Influence of Air Cavity Dimensions and Shape in Briquettes on Their Heat Transfer Capability

Alfred Noufie Mekel; Paul M. Rumagit; Tammy T.V. Pangow; Fransiscus J. Tulung

doi:10.52158/jamere.v6i1.1657

Authors

Alfred Noufie Mekel Politeknik Negeri Manado
Paul M. Rumagit Politeknik Negeri Manado
Tammy T.V. Pangow Politeknik Negeri Manado
Fransiscus J. Tulung Politeknik Negeri Manado

DOI:

https://doi.org/10.52158/jamere.v6i1.1657

Keywords:

: Briquettes, shell charcoal, air channels.

Abstract

Biomass-based fuel in the form of briquettes represents a reliable solution; Indonesia possesses abundant biomass resources that can be utilized as fuel for the public good. Furthermore, the heat output is comparable to that of other fuels, and the manufacturing process is relatively straightforward. This study aimed to determine the heat transfer performance of briquettes featuring air channels, made from a blend of coconut shell charcoal and coconut shell material. Three air channel models were tested—diameters of 20 mm and 31 mm, and a 10x4 mm rectangular channel—using two charcoal-to-shell mixing ratios (200:50 and 200:25) and tapioca starch as a binder. Model II Briquette B demonstrated the best heat transfer performance, taking 12 minutes to boil one liter of water and achieving an ignition efficiency of 78%.

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