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低圧・低質量流束条件下における周方向非均一加熱管の限界熱流束(熱工学,内燃機関,動力など)
http://hdl.handle.net/10112/4602
http://hdl.handle.net/10112/460259360c8e-d7be-400a-92d9-27b917380919
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KU-1100-20050325-1.pdf (856.5 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2011-07-13 | |||||
| タイトル | ||||||
| タイトル | 低圧・低質量流束条件下における周方向非均一加熱管の限界熱流束(熱工学,内燃機関,動力など) | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| 著者 |
梅川, 尚嗣
× 梅川, 尚嗣 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 24674 | |||||
| 姓名 | Umekawa, Hisashi | |||||
| 概要 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | In an actual boiling channel, e.g. boililer water-tubes, the circumferential heat flux is not uniform. Thus, critical heat flux (CHF) of non-uniformly heated tube becomes an important design factor of conventional boilers, especially for the compact water-tube boiler with tube-nested combustor. The small compact boiler is operated at low-pressure and low-mass flux condition compared with the large scale boiler, thus the redistribution of liquid film will strongly affect on the characteristics of CHF. In this investigation, non-uniformly heat flux distribution along the circumferential direction was generated by using the Joule heating of SUS304 tubes which had the wall thickness distribution. The heated length of test-section was 900mm, inner diameter was 20mm and outer diameter was 24mm. The center of the inner tube surface was shifted by ε=0, 0.5, 1.0, 1.5mm from the center of the outer tube surface. The heat flux ratio between maximum and minimum heat fluxes of these tubes correspond to 1.0, 1.7, 3.0 and 7.0, respectively. Experimental conditions were as follows; system pressures were 0.3 and 0.4MPa, mass flux range were 10-100kg/m^2s, inlet temperatures were 30 and 80deg. C. The experimental results showed an increase in the critical heat flux by the existence of the redistribution of the flow. These characteristics have been well explained by using the similar concept of Butterworth's spreading model. | |||||
| 書誌情報 |
日本機械学会論文集（B編） 巻 70, 号 703, p. 939-946, 発行日 2005-03-25 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 03875016 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00187441 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 出版者 | ||||||
| 出版者 | 日本機械学会 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Critical Heat Flux | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Non uniformly Heated Tube | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Bolling Two-phase Flow | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Heat Transfer | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Pressure Difference | |||||
