| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
A subcooled pool boiling has been performed for the purpose of developing high heat flux cooling technology. Microbubble emission boiling (MEB) has occurred for a mixture of anti-freezing liquid and water. The heat flux increases higher than the critical heat flux (CHF). In the boiling of water under the pressurized condition of 0.1MPa in gage for an example, MEB occurs and the heat flux increases higher than the CHF. In subcooled flow boiling in a microchannel, the vapor fills whole of the channel and the boiling turns to film boiling. These experimental results give effective information for the practical cooling technology.
In subcooled pool boiling of water in an acoustic field, MEB has been observed at frequency of 500Hz. According to the PIV analysis of microbubbles in MEB, the subcooled liquid has been observed to flow into the heating surface. The experimental results give the mechanism of MEB and solid-liquid contact.
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