Numerical Study of Hydrogen Combustion on Micro Combustor with Exhaust Gas Recirculation Jacket for Enhancement of Emissive Power

This research is to study the numerical model of hydrogen combustion in micro combustor to enhance the energy converted to electricity by analysis of wall temperature and emissive power. This research focuses on the effected parameters of micro combustor geometry (rectangle, cylinder, hexagon), exhaust gas recirculation (EGR) at 1.8551x10^-5 kg/s of hydrogen mass flow rate and equivalence ratio 1.0. As the result, 18.8-19.7 °C of wall temperature and 12.2-12.4% of emissive power from cylindrical and hexagonal micro combustor are higher than of rectangular micro combustor. Moreover, installing of hexagonal EGR and cylindrical EGR with micro combustor could enhance the emissive power of 1.6 and 2.0 watt, respectively. This study could be represented that the design of cylindrical micro combustor with cylindrical EGR cover with porous media could enhance the highest emissive power of 12.26 watt and 33.7%.higher than that of referenced model was obtained.