816 高速薄膜の蒸発による局所高熱流束冷却に関する研究(G06-3 伝熱(1),G06 熱工学)

概要

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Local high-heat-flux cooling by high-velocity thin-film evaporation was examined experimentally for cooling of Micro-Processor-Unit. Steady state experiments were conducted using a copper thin-film and rectangular sub-millimeter-channels. The height of the test channel was 0.5mm; the size of the heater was 2×2mm^2. The liquid velocity was about 4m/s; the liquid subcooling was 20K. Experimental results showed that the heat flux during experiment with the heating surface at exit of the test section was higher than that with the heater in the test channel. When the heater was located at the exit of the test channel, it was suppressed that a coalesced bubble extended over the whole area of the heater. Thus, the maximum heat flux (critical heat flux) was 3×10^6W/m^2 for the experiment with the heating surface at the exit of the test channel in a range of present experiments.
一般社団法人日本機械学会の論文
2005-09-18