Abstract
In highly subcooled boiling of water, micromubble emission boiling, MEB, occurs and the heat flux increases higher than the ordinary critical heat flux. Subcooled boiling is performed for a mixture of water and Ethylene-glycol for practical condition of EV cooling system. MEB is generated stably and the maximum heat flux is 3.0〜3.4MW/m^2 (300〜340W/cm^2) at 198〜208K of wall temperature for 50vol% of Ethylene-glycol and 40K of liquid subcooling under the atmospheric condition. Small hysteresis is observed in boiling curves with microbubble emission. The experimental results show that MEB is effective for a high heat flux cooling technology in power electronics.
