| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2015: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2013: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
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| Outline of Final Research Achievements |
As a solution against the increasing heat flux density of electronics, cooling systems using the latent heat transportation during flow boiling in mini tubes can be applied. However, generated bubbles occupy the entire cross section of a mini tube and grow towards both axial directions. The resulting flow fluctuation makes the phenomena more complicated and it disturbs the clarification of the phenomena in detail.
To investigate the effect of bubble growth rate on the flow stability and the effect of thermal properties on the heat transfer characteristics of flow boiling in a single mini tube, a series of experiments were conducted. As a result, it became clear that the suppression of the bubble growth rate increases flow stability. The heat transfer characteristics differ with the force dominating the flow and they change with the increase of heat flux.
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