Mega Nur Sasongko, Widya Wijayanti
Swirl vanes are a flame retardant instrument that promotes the formation of zone of recirculation to improve the mixing of reactants and flame stabilization. The swirl vanes are often used in a variety of burner to improve the performance and efficiency of the burner. In the present study, we investigate experimentally the effect of different shape of swirl vanes on flame visualization and temperature distribution of diffusion flames on co-flow burner. Three types of swirl vanes are twist, curved and skewed types. In this co-flow burner configuration, the flow rate of fuel was varied from 1.32 to 15.92 m./s, while the flow rate of air was varied from 0.08 to 0.3 m/s. Temperature of the flame was measured at 12 points around the flame to obtain the temperature distribution of the flame. The results show that the skewed swirl produced a highest flame shape and uniform temperature distribution compared to others swirl. The differences tendency between three types of swirl vanes on the visualization of the co-flow diffusion flame was caused by the magnitude of the recirculation zone. The different shape of swirl generated the different level of turbulence. The greater turbulence results in the greater of the resultant recirculation zone. © 2018 Author(s).
Mechanical Engineering, Brawijaya University, Jalan Mayjend Haryono 167, Malang East Java, 65145, Indonesia
