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All Journal JURUTERA (Jurnal Umum Teknik Terapan)
Ujung, Idris
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Mechanical Engineering

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Heat Transfer Analysis of Deep Coaxial Geothermal Heat Exchangers: Insights Into Heat-Flux Distribution on Borehole Wall Ujung, Idris; A. Abdullah, Nasruddin; Suheri
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 02 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i02.12095

Abstract

Briquettes are solid fuel that can be used as an alternative energy source. Making biocharcoal briquettes is one way to convert a biomass energy source into another biomass by compressing it and making it into a more regular shape. In this research, red calliandra wood was used using the pyrolysis method, temperature variations and adhesive variations. The pyrolysis temperatures used are 300°C, 400°C, and 500°C with a pyrolysis time of 60 minutes. Then the briquettes are molded with a ratio of charcoal and molasses (cane molasses) 90%:10% and 70%:30%. Briquettes are tested using the SNI 01-6235-2000 method, namely calorific value, water content, ash content and volatile matter. Of the 6 samples taken, almost all met the standards and sample A briquettes obtained the best results with a composition of 90% charcoal and 10% adhesive at a temperature of 500, producing a calorific value of 6945.67 cal/gr, water content of 6.35%, ash content of 7, 76%, volatile matter 10.81% and bound carbon 77.72%.
Co-Authors A. Abdullah, Nasruddin Suheri