Pengaruh Variasi Jumlah Lubang Distribusi Udara Terhadap Kinerja Tungku Gasifikasi Sekam Padi Tipe Downdraft

This study aims to improve the performance of the downdraft gasification furnace by adding air distributors, to get better results, compare the initial ignition time, combustion temperature and effective flame. This research was conducted by testing the performance of the downdraft gasification furnace by adding air distributors. Each distributor has a pipe diameter of 30 mm and a hole diameter on its sides 10 mm, the difference of each distributor is type 1 with a length of 200 mm number of holes 35, type 2 with a length of 400 mm number of holes 70 while type 3 with a length of 600 mm number of holes 105. The results showed that the furnace without the initial ignition distributor was 9 minutes with the highest average temperature of 725 ° C while the type 1 distributor had an initial ignition time of 11 minutes with the highest average temperature of 760 ° C, type 2 ignition initial 9 minutes with average temperature the highest average of 803.17 ° C, type 3 ignition of 7 minutes with the highest average temperature of 824 ° C. Effective flame without distributor lights up for 37 minutes with type 1 distributor lit 40 minutes, type 2 for 33minutes, type 3 for 31 minutes. Keywords: Distributor of gasification, downdraft, rice husk