STUDI EKSPERIMENTAL KARAKTERISTIK NYALA API PEMBAKARAN PREMIX MINYAK KAPUK DENGAN BERBAGAI ORIENTASI MEDAN MAGNET
Abstrak
Tujuan studi ini untuk mengetahui pengaruh arah medan magnet dan tanpa pada pembakaran premix minyak kapuk terhadap karakteristik nyala api selama proses pembakaran. Minyak nabati sebagai pengganti bahan bakar minyak bumi sangat penting untuk dilakukan penelitian yang berkelanjutan. Penelitian ini dilakukan dengan menggunakan metode eksperimental skala laboratorium untuk mendapatkan evolusi, temperatur dan tinggi nyala api pada pembakaran premix dengan penambahan magnet. Minyak kapuk diisikan kedalam boiler sebesar 600 ml dan dipanaskan dengan suhu 300 oC, campuran uap minyak kapuk dengan udara ini direaksikan di ruang burner. Dua batang magnet permanen ditempatkan pada dua sisi ujung burner. Studi ini menemukan medan magnet tarik menghasilkan nyala api lebih bening, ramping dan temperatur tertinggi dibanding magnet tolak dan tanpa. Gaya lorent yang dihasilkan oleh medan magnet secara terus menerus memutuskan rantai kimia bahan bakar sehingga membuat denyutan magnetik pada nyala api. Udara yang mengandung oksigen disekitar burner memisahkan diri mengakibatkan elektron terlepas, sehingga menghasilkan temperatur nyala api semakin tinggi yang dihasilkan oleh reaksi pembakaran semakin cepat. Medan magnet di sekitar nyala api menginduksi aliran udara secara magnetis menimbulkan perpindahan panas disekeliling nyala api, sehingga menghasilkan ketinggian nyala api yang bervariasi.
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