| Project/Area Number |
22560201
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
MORI Hideo 九州大学, 大学院・工学研究院, 教授 (70150505)
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| Co-Investigator(Renkei-kenkyūsha) |
KARIYA Keishi 九州大学, 大学院・工学研究院, 助教 (80551895)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 微細流路 / 沸騰熱伝達 / 伝熱促進 / 微細流路管 / 流動様相 / 摩擦圧力損失 / 矩形管 / 水平流 / 三角形管 / 垂直流 |
|---|
| Research Abstract |
Experiments were performed on two-phase flow pattern, boiling heat transfer and pressure drop of a refrigerant R410A flowing vertically upward and downward, and horizontally in small circular, rectangular and triangular tubes with hydraulic diameter of about 1 mm, and their characteristics were clarified. In small flow channels, enhancement of heat transfer was realized mainly in slug flow at low mass flux and low quality, in which thickness of liquid film around vapor plug was very thin, resulting in good heat transfer at low heat flux.
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