CHARACTERIZATION AND OPTIMIZATION DESIGN OF VENTURI GAS MIXER FOR SYNGAS

다국어 초록 (Multilingual Abstract)

A venturi mixer prototype was developed for mixing air and synthesis gas or syngas. Syngas has a very low energy density, so that a mixer which has air-fuel ratio around 1.2 is expected. The purpose of the work was to analyze the characteristics of the venturi gas mixer prototype by using a computational fluid dynamics (CFD) simulation and to make a new design that has desired performance. A three dimensional (3D) computational model of the venturi gas mixer prototype was made and used as the baseline model. 3D models with modifications on the size of venturi throat, gas chamber and gas exit channel were made and calculated in order to understand the characteristics of the venturi gas mixer. Base on the CFD results a new venturi gas mixer which had desired air-fuel ratio and acceptable pressure loss was designed and also a new prototype was made. The calculation and the experiment results of the optimized design showed that it had the expected airfuel ratio and pressure loss.

목차 (Table of Contents)

• Abstract
• 1. INTRODUCTION
• 2. GAS MIXER TEST EQUIPMENT
• 3. CFD SIMULATION
• 4. RESULTS
• 5. OPTIMIZED MODEL
• 6. CONCLUSION
• ACKNOWLEDGEMENT
• REFERENCES