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Study on rotating condenser with a scraper
https://doi.org/10.18999/memfenu.36.1.1
https://doi.org/10.18999/memfenu.36.1.1365802d7-0920-4cc7-8cda-90e43eca0843
名前 / ファイル | ライセンス | アクション |
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36-1-01.pdf (3.8 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2020-11-16 | |||||
タイトル | ||||||
タイトル | Study on rotating condenser with a scraper | |||||
言語 | en | |||||
著者 |
Izumi, Ryotaro
× Izumi, Ryotaro× Maeda, Hayato× Yamashita, Hiroshi |
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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 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A rotating condenser with a scraper is considered as a new method used to augment condensation heat transfer. We analyze the case where the condensate film on the vertical and the horizontal rotating cylinder is scraped off mechanically by the plate. In the vertical cylinder, the analytical solution for transient film condensation on a vertical plate is obtained, and it is applied to the infinitesimal element on the outer surface of vertical cylinder. The mean Nusselt number is calculated by integration over the whole surface of cylinder. Also, in the horizontal cylinder, an ordinary differential equation for a condensate film thickness is derived with several incidental conditions, and is integrated by a numerical method. The condensate state is classified according to the combination of the conditions. The enhancement due to scraping is arranged in terms of the mean Nusselt number ratio, and the effects of rotation speed, temperature difference between vapor and condenser surface are examined. The effects of the unscraped film thickness and the position of scraper are examined at the vertical and the horizontal rotating cylinder, respectively. Lastly, we report the experimental results for the condensation of refrigerant R-11 corresponding to the above analysis. The distributions of cylinder surface temperature and the mean heat transfer coefficients are obtained. The effects of rotation speed and temperature difference between vapor and condenser surface are made clear. The enhancement due to scraping is arranged in terms of the mean Nusselt number ratio and compared with analytical results. | |||||
言語 | en | |||||
出版者 | ||||||
出版者 | Faculty of Engineering, Nagoya University | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
ID登録 | ||||||
ID登録 | 10.18999/memfenu.36.1.1 | |||||
ID登録タイプ | JaLC | |||||
ISSN(print) | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0027-7657 | |||||
書誌情報 |
en : Memoirs of the Faculty of Engineering, Nagoya University 巻 36, 号 1, p. 1-35, 発行日 1984-10-31 |
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値 | publisher |