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Heat Transfer Performance of Falling Film Type Plate-fin Evaporator
https://fra.repo.nii.ac.jp/records/2012083
https://fra.repo.nii.ac.jp/records/2012083859a4d85-0642-42b6-95c9-80e6ab68061c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
fishu_k_64_283.pdf (2.4 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2024-10-11 | |||||
| タイトル | ||||||
| タイトル | Heat Transfer Performance of Falling Film Type Plate-fin Evaporator | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Minichannels; Heat transfer; Plate Fin Evaporator; Falling film | |||||
| 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 | departmental bulletin paper | |||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 著者 |
大原, 順一
× 大原, 順一 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The characteristics of heat transfer and flow patterns are investigated experimentally for the vertical falling film evaporation of pure refrigerant HCFC123 in a rectangular minichannels consisting of offset strip fins. The refrigerant liquid is uniformly supplied to the channel through a distributor. The liquid flowing down vertically is heated electrically from the rear wall of the channel and evaporated. To observe the flow patterns during the evaporation process directly, a transparent vinyl chloride resin plate is placed as the front wall. The experimental parameters are as follows: the mass velocity G = 28~70 kg/(m2 s), the heat flux q = 20~50 kW/m2 and the pressure P≈100 kPa. It is clarified that the heat transfer coefficient a depends on G and q in the region of vapor quality x≥ 0.3 while there is little influence of G and q in the region x ≤ 0.3 . From the direct observation using a high speed video camera and a digital still camera, flow patterns are classified into five types. Then the empirical correlation equations for evaporation heat transfer coefficient on a vertical falling film plate fin evaporator with minichannels are proposed. From the physical model to evaluate the heat transfer coefficient of the minichannel surface with fins, the characteristics of fin efficiency is clarified that the average value of fin efficiency is about 0.6 and the distributive characteristics of fin efficiency is roughly inverse of heat transfer coefficient characteristics. |
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| 言語 | en | |||||
| 書誌情報 |
ja : 水産大学校研究報告 en : Journal of National Fisheries University 巻 64, 号 4, p. 283-291, ページ数 9, 発行日 2016-03 |
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| 出版者 | ||||||
| 出版者 | 水産大学校 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | National Fisheries University | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 0370-9361 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00124678 | |||||
| 情報源 | ||||||
| 識別子タイプ | Local | |||||
| 関連識別子 | fishu_k_64_283 | |||||
