CFD Study of Burner Nozzle of Household LPG Stoves

• Main Author: Ginaris Mulia, Gilang
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/35365
• Institution: Institut Teknologi Bandung

LPG consumption in Indonesia always increases, mostly in household sector for cooking using LPG stoves. The increasing of LPG consumption cannot be fulfilled by domestic production. To overcame this LPG problem deficit, Indonesian gas company imports, approximately 70% of LPG needs. To solve this problem, there must be an effective solution for saving the use of LPG in household sector. Effective solution can reduce the import cost and government subsidies. Previous research showed that modification of burner nozzle can enhance heat transfer performance. This undergraduate final project studies about performance of four burner models of LPG stoves, namely Conventional Burner, Same Direction Burner, Different Directions, and Clockwise Burner. The difference among the four models is mainly in the direction of each nozzle position: the outer nozzle, the middle nozzle, and the inner nozzle. A series LPG combustion simulations of the four burner models have been done a using CFD software, known as Ansys Fluent. The simulation results several parameters were analyzed and observed i.e: gas flow velocity, turbulence level, and combustion rate in the burners. Based on the simulation result, the outer and middle nozzle shows significant influence to the LPG combustion. The value of efficiency for various type of burner are 34,6% for Different Direction Burner, 34,2% for Normal Burner, 33,7% for Clockwise Burner, and 28,3% for Same Direction Burner. The Clockwise and Same Direction Burner produces high combustion energy compared to the other models. On the other hand, the Clockwise Burner and Same Direction Burner also wastes high combustion energy. Further studies are needed to find an optimum nozzle burner angle and to get better burner efficiency, especially in the Same Direction Burner and Clockwise Burner.