Study on Critical Heat Flux Mechanism of Subcooled Water Flow Boiling
| Project/Area Number |
22560196
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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 | Kyoto University |
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Principal Investigator |
HATA Koichi 京都大学, エネルギー理工学研究所, 助教 (60115912)
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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: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 沸騰限界熱流束 / 強制対流 / 限界熱流束 / 円管 / サブクール水 / 限界熱流束発生機構 / 流量急減 / 限界熱流束表示式 / 乱流熱伝達 / 核沸騰熱伝達 / スワール流れ / 捻りテープ / テープツイスト比 / SUS304円管発熱体 / CHF表示式 |
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| Research Abstract |
The steady-state critical heat fluxes (CHFs) in a short SUS304-tube with twisted-tape insert are systematically measured. The SUS304 test tube of inner diameter=6 mm, heated length=59.5 mm, effective length=49.1 mm is used in this work. The SUS304 twisted tapes withtwist ratio=pitch of 180°rotation)/d=2.39, 3.39 and 4.45 are used. The influences of the twisted-tape insert and the swirl velocity on the CHFs are investigated into details and the widely and precisely predictable correlations of the CHFs in the SUS304-tube with twisted-tape insert are given. The correlations can describe the CHFs obtained in this work within -25 to +15 % difference.
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Report
(4 results)
Research Products
(47 results)
