A211 気泡微細化沸騰の高密度電子機器の冷却技術への応用(OS-7: 電子機器・デバイスの熱工学的課題と熱流動現象(3))

抄録

Subcooled pool boiling is investigated for binary mixtures of water and Ethylene-glycol of 30vol%,50vol% and 70vol% under the atmospheric condition. The heat transfer performance decreases with increasing of Ethylene-glycol concentration.According to the experimental data, the heat flux is indicated with liquid subcooling for the concentration of Ethylene-glycol. As increasing Ethylene-glycol concentration, CHF decreases and Microbubble Emission Boiling, MEB, is difficult to be generated. Stable MEB is observed at liquid subcooling of 50K for the mixture of water and Ethylene-glycol of 30vol %. The concentration of coolant is one of the difficult factors to be resolved in boiling heat transfer for the application to cooling technology.