The Effect of The Inlet Reactant Direction on Circular Disk Combustor Characteristics

International Conference on Mechanical Engineering Research and Application

Kusumaningsih, Haslinda^1 ; Yuliati, Lilis^1 ; Raharjo, Rudianto^1 ; Wibowo, Ragang Aji^1

Mechanical Engineering Department, Engineering Faculty, Brawijaya University, Malang, Indonesia^1

关键词: Circular disk;    Combustion characteristics;    Equivalent ratios;    Flame temperatures;    Flame visualization;    Meso-scale combustors;    Micro power generator;    Power generation systems;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/494/1/012051/pdf
DOI  :  10.1088/1757-899X/494/1/012051

来源: IOP

【 摘 要 】

Micro-power generator is a micro-scale power generation system that consist of small combustor. Small dimensions combustion chamber produce the unstable flame. It causes high heat loss from the system to the environment through the combustor wall or the exhaust gas channel. This causes the flame difficult to spread and the flame will go out. This study was conducted to determine the effect of inlet reactant direction toward combustion characteristics on a combustor circular disk. Combustor was made of copper and heat resistant glass as a cover to make it easier to observe the flame visualization. Liquefied Petroleum Gas and air were the reactants in this study. The reactant inlet direction was varied tangentially and radially. The results showed the reactant direction of the tangentially inlet produced the most stable flame stability. The tangential flow direction causes the reactants to move to the edge so that reactant gas can fill the combustion chamber. And with the swirl flow in the flame combustion chamber, it can spin longer before exiting to the exhaust gas, thus increasing combustion residence time in the combustion chamber and combustion will be more perfect. Likewise, the highest flame temperature is in the reactants direction tangentially. However, the flame temperature will decrease as the equivalent ratio increases in a constant fuel flowrate state.