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3次元加工管外におけるR1234ze（E）の流下液膜蒸発に及ぼす蒸発温度の影響
https://oacis.repo.nii.ac.jp/records/2000747
https://oacis.repo.nii.ac.jp/records/20007475122ceca-73b1-4aba-8bc6-34ecc243d332
| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2025-11-10 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | 3次元加工管外におけるR1234ze（E）の流下液膜蒸発に及ぼす蒸発温度の影響 | |||||||||||||
| 言語 | ja | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | jpn | |||||||||||||
| キーワード | ||||||||||||||
| 主題 | heat transfer, flow pattern, falling liquid‒film, evaporation temperature, microscopic‒grooved tube, R1234ze(E) | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ | journal article | |||||||||||||
| アクセス権 | ||||||||||||||
| アクセス権 | open access | |||||||||||||
| 著者 |
山元, 湧太
× 山元, 湧太
× 地下, 大輔
× 井上, 順広
× 高橋, 宏行
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| 書誌情報 |
ja : 銅と銅合金 en : Journal of Japan Research Institute for Advanced Copper-base Materials and Technologies 巻 64, 号 1, p. 302-306, 発行日 2025 |
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| 抄録 | ||||||||||||||
| 内容記述 | The present study experimentally investigated the effects of evaporation temperature on falling liquid-film evaporation heat transfer coefficients and flow pattern using R1234ze(E) on a horizontal microscopic-grooved copper tube. The experiments were carried out at evaporation temperatures of 15°C and 25°C, heat flux range of 5-40 kWm-2, and film Reynolds number range of 100-900. As film Reynolds number increased, the flow pattern shifted from droplets-columns mode, columns mode, columns-sheet mode, and sheet mode. The effect of evaporation temperature on the film Reynolds number at which the flow pattern transitions were small. The evaporation heat transfer coefficient at 25°C was higher than that at 15°C for all film Reynolds numbers. At q=10 kWm-2, the evaporation heat transfer coefficients at 25°C were higher than those at 15°C, especially in the low film Reynolds number range. For both evaporation temperature conditions, the heat transfer coefficient increased with increasing heat flux. The heat transfer coefficients obtained in this study were 4 to 7 times higher than the predicted values calculated by existing correlations for pool boiling heat transfer on horizontal smooth tubes. The effect of differences in evaporation temperature on the heat transfer coefficient of the microscopic-grooved copper was similar to that of pool boiling in a smooth tube. | |||||||||||||
| 内容記述 | ||||||||||||||
| 内容記述 | 公開日: 2023-11-08 | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 1347-7234 | |||||||||||||
| 書誌レコードID | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA11995570 | |||||||||||||
| DOI | ||||||||||||||
| 関連タイプ | isVersionOf | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | https://doi.org/10.34562/jic.64.1_302 | |||||||||||||
| 情報源 | ||||||||||||||
| 関連識別子 | https://www.jstage.jst.go.jp/article/jic/64/1/64_302/_article/-char/ja | |||||||||||||
| 関連名称 | Publisher's Version/PDF (Open Access) | |||||||||||||
| 情報源 | ||||||||||||||
| 関連識別子 | http://copper-brass.gr.jp/about-society/outline | |||||||||||||
| 関連名称 | 日本銅学会 | |||||||||||||
| 出版者 | ||||||||||||||
| 出版者 | 日本銅学会 | |||||||||||||
