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2703 二重円管型二相熱サイフォンの限界熱流束 : 流動状況の影響

発表形態:
一般講演(学術講演を含む)
主要業績:
その他
単著・共著:
共著
発表年月:
2000年07月
DOI:
会議属性:
指定なし
査読:
無し
リンク情報:

日本語フィールド

著者:
門出 政則;光武 雄一;有馬 博史;村重 正和
題名:
2703 二重円管型二相熱サイフォンの限界熱流束 : 流動状況の影響
発表情報:
日本機械学会年次大会講演論文集 巻: 2000 号: 4 ページ: 479480
キーワード:
概要:
Critical heat flux (CHF) in two-phase thermosyphon can be improved about 8 times by inserting a tube into the thermosyphon and controlling a flow situation near its exit, where a counter-current flow of vapor and liquid always takes place. The critical heat flux can be improved by the counter-current flow there. The present experiment has been made to elucidate an effect of inserted tube on CHF by inserting either a rod or tube, which is extruded into a vapor space and then through which the vapor only flows out. For the case of the inserted rod, the CHF is gradually decreased with increasing the rod diameter and is found to be predicted by a method of maximum falling film liquid rate. For the case of the inserted tube, the CHF is also gradually decreased until a tube diameter, beyond which the CHF is again increased approaching the CHF for natural convection flow in annular channel.
抄録:

英語フィールド

Author:
Monde Masanori;Mitsutake Yuhichi;Arima Hirofumi;Murashige Masakazu
Title:
Critical Heat Flux in Open Concentric thermosyphon : Effect of Flow Aspect
Announcement information:
JSME annual meeting Vol: 2000 Issue: 4 Page: 479480
An abstract:
Critical heat flux (CHF) in two-phase thermosyphon can be improved about 8 times by inserting a tube into the thermosyphon and controlling a flow situation near its exit, where a counter-current flow of vapor and liquid always takes place. The critical heat flux can be improved by the counter-current flow there. The present experiment has been made to elucidate an effect of inserted tube on CHF by inserting either a rod or tube, which is extruded into a vapor space and then through which the vapor only flows out. For the case of the inserted rod, the CHF is gradually decreased with increasing the rod diameter and is found to be predicted by a method of maximum falling film liquid rate. For the case of the inserted tube, the CHF is also gradually decreased until a tube diameter, beyond which the CHF is again increased approaching the CHF for natural convection flow in annular channel.


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