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KO50001004-00080031-0001.pdf
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| Title |
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The experimental study on pneumatic ejector, with special reference to the effect of distance, from nozzle exit section to the entrance of the parallel part of the mixing tube, upon performance characteristics (2nd report)
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| Creator |
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渡部, 一郎
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ワタナベ, イチロウ
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Watanabe, Ichiro
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Professor at Keio University
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渡辺, 剛男
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ワタナベ, タケオ
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Watanabe, Takeo
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Assistant at Keio University
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仲田, 哲郎
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ナカタ, テツロウ
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Nakata, Tetsuro
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Master Course Student at Keio University
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中川, 洋
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ナカガワ, ヒロシ
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Nakagawa, Hiroshi
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Engineer at Nissan Kagaku Co.
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慶應義塾大学藤原記念工学部
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ケイオウ ギジュク ダイガク フジワラ キネン コウガクブ
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| Romanization |
Keio gijuku daigaku Fujiwara kinen kogakubu
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1955
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Proceedings of the Fujihara Memorial Faculty of Engineering Keio University
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8
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31
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1955
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| Start page |
94(1)
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103(10)
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| Abstract |
Among the factors which affect the performance characteristics of a pneumatic ejector, the effect of the distance a' from the nozzle exit section to the entrance of the parallel part of the mixing tube was dealt with experimentally in the present paper. It was found that the optimum distance a' for the highest vacuum and the highest ejector efficiency was a'= 15 mm, so long as the present ranges of experiments were concerned. As the inner diameter e of the parallel part of the mixing tube was selected like e= 9.55 mm,
the optimum value above-mentioned yields to a' /e= 1.57, which coincides with the results obtained previously by L. J. Kastner and J. R. Spooner for a pneumatic ejector. Besides, the present authors have measured the pressure distributions in the mixing tube, the results of which we compared with the theories of W. Tollmien and A. M. Kuethe. Further, we compared the results of the present paper with the results hitherto published on the steam ejectors.
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| Departmental Bulletin Paper
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