Abstract
To obtain cooling data for high power electronic devices such as inverter in electric vehicle, subcooled pool boiling has been performed for binary mixtures of ethylene-glycol and water under atmospheric condition. Volume concentration of ethylene-glycol is 30% and 50%. Microbubble emission boiling is observed at above 40K of liquid subcooling and the heat flux increases higher than CHF. The maximum heat flux is 350W/cm^2 at about 200℃. It satisfies the requirements of maximum cooling heat flux of 300W/cm^2 for a power inverter of future electric vehicle. However, the heat flux and heat transfer coefficient are considerably lower than those of water.
