Study of air cooling to remove high heat flux of 10MW/m2

2014 Fiscal Year Final Research Report

• Project/Area Number: 25630060
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Thermal engineering
• Research Institution: Tohoku University
• Principal Investigator: MARUYAMA Shigenao 東北大学, 流体科学研究所, 教授 (80173962)
• Co-Investigator(Kenkyū-buntansha): KOMIYA Atsuki 東北大学, 流体科学研究所, 准教授 (60371142) ; IGA Yuka 東北大学, 流体科学研究所, 准教授 (50375119) ; OKAJIMA Junnosuke 東北大学, 流体科学研究所, 助教 (70610161)
• Project Period (FY): 2013-04-01 – 2015-03-31
• Keywords: 電子機器冷却 / マイクロチャンネル / 超音速流 / 干渉計

Outline of Final Research Achievements

To achieve an air cooling system high heat flux for the electronics cooling, the supersonic air flow with low temperature, which was generated by an adiabatic expansion, and micro-channel were applied to micro-heat exchanger. By using a microchannel, the boundary layer thickness decreases and convective heat transfer coefficient is improved. The density distributions of the supersonic air flow inside the micro-channel, which was impossible to measure by conventional technique, were visualized and measured by using phase-shifting interferometer. From the comparison between the results of experimental and calculated, the cooling performance was evaluated. Then, it was evaluated as 1.5 MW/m2 despite the sir cooling.

Free Research Field

熱流体工学