Pengaruh Variasi Air Fuel Ratio terhadap Kinerja Gasifier Tipe Downdraft menggunakan Filter Ampas Tebu dan Kulit Kayu Secang

Abstract

This research aims to provide a deeper understanding of the potential of downdraft type gasifiers as a renewable energy source. Gasification is a thermochemical process that converts solid fuel into synthesis gas (syngas), where the use of biomass filters can improve gas quality by reducing impurities such as CH4, CO₂, H₂, and tar. In this study using experimental research method or real observation. The results of the study show that AFR (Air Fuel Ratio) is very influential on syngas content, the higher the AFR, the more perfect combustion. Resulting in high syngas content. In the filter combination of bagasse and secang bark at AFR 2,2, shows a significant increase in the capture of methane (CH₄), the release of carbon dioxide (CO) and the release of hydrogen content (H₂) is significant and tends to be stable until the end. Meanwhile, AFR 0,7 and 1,5 showed a rapid and high increase in concentration. In conclusion, the AFR 2,2 variation produces optimal combustion. Optimal combustion can increase the content of CO, H₂, and reduce tar formation.