The basic investigation of evaporation rate and burning temperature of various type of liquid fuels droplet

The investigation of spray combustion phenomenon in order to improve the combustion efficiency has been conducted through the experimentally or simulation. On the liquid spray combustion phenomenon the size of liquid fuel that was sprayed into the combustion chamber (droplet) is very small, ranging between 1-25 μm. Due to the very small size of liquid droplet, the gravitation effect of liquid droplet was negligible or near the microgravity condition. Therefore, this study was conducted to observe the behaviour of evaporation rate and the burning temperature of various types of liquid fuels droplet. The results of this research can be used as a basis in experiments or modelling of spray combustion. The liquid fuel that was used in this experiment are n-decane, pertamax, pertalite and pertamax turbo. Experiments were performed by injecting liquid fuel into droplets on SiC fiber grids with several variations of droplet size (0.5 mm, 0.75 mm, 1 mm, 1.25 mm and 1.5 mm).The results show that the droplet size of each fuel has a positive correlation to the evaporation rate and also the combustion temperature. This paper will discuss in detail the characteristics of the evaporation rate and the burning temperature of each type of liquid fuels droplet.