| Project/Area Number |
17560192
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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 | Shibaura Institute of Technology |
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Principal Investigator |
KAMOSHIDA Junji Shibaura Institute of Technology, College of Engineering, Professor (30052856)
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| Co-Investigator(Kenkyū-buntansha) |
SHOJI Masahiro University of Kanagawa, Faculty of Engineering, Professor (00011130)
KAWAGUCHI Yasuo Tokyo University of Science, Faculty of Science and Technology, Professor (20356835)
鈴木 健二郎 芝浦工業大学, 工学研究科, 教授 (00026064)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥3,610,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥210,000)
Fiscal Year 2007: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2006: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Pool nucleate boiling / Bubble diameter at detachment / Three Phase Contact line / Bubble erowthine rate / Liquid-vapor interuhase / Surface tension eradient / Bubble risine velocit / 気泡上昇速度 / 気泡 / 熱伝達特性 / 沸騰様相 / 溶液濃度 / 発泡点密度 / 離脱気泡径 / 気泡サイクル / 無次元整理式 |
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| Research Abstract |
In the advantage, the boiling heat transfer study has the long history, and the liquid which the study does with the object crosses many materials such as not only water but also refrigerant, organic solvent.
However, the study example is little, since there are many uncertain problems which made high boiling point, high corrosiveness and concentration in the heating surface vicinity to be a beginning even in the inside which is abounding of that the liquid as an object is also aqueous solution on the industry on multi-component system liquid, it is for inorganic salt aqueous solution.
Especially, though lithium system saline aqueous solution is widely used as an absorption solution of absorption water heater-chiller, as a influencial factor of nucleate boiling heat transfer characteristics which controls the performance of reproduction apparatus of absorption cooler and warmer, it has sufficiently and not yet obtained a knowledge of concentration and pressure widely crossed.
In this report, nucleate pool boiling heat transfer experiment of each aqueous solution which changed composition ratio of the mixed salt for lithium bromide and lithium chloride was carried out, and the relationship between boiling heat transfer characteristics and composition ratio was clarified.
In addition, nucleate pool boiling heat transfer characteristic under the pressurization for the high concentration aqueous solution of lithium bromide and chloride were clarified experimentally.
As the result, dimensionless correlation system on mixed salt aqueous solution was proposed from the relationship between boiling heat transfer characteristics and bubble population density. Lithiumu halide aqueous solution was proposed from the relationship between boiling heat transfer characteristics and bubble population density.
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