垂直管内の蒸気‐凝縮水の対向二相流挙動

  • 佐藤 森
    室蘭工業大学大学院工学研究科生産情報システム工学専攻
  • 片山 二郎
    室蘭工業大学工学部機械システム工学科
  • 下家 智章
    北海道農業近代化コンサルタント
  • 高橋 洋志
    室蘭工業大学工学部機械システム工学科

書誌事項

タイトル別名
  • Behavior of Steam-Condensate Countercurent Two-Phase Flow in a Vertical Pipe.
  • スイチョクカンナイ ノ ジョウキ ギョウシュクスイ ノ タイコウ 2ソウリュ

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抄録

Steam-condensate countercurrent two-phase flow was studied in a vertical steam pipe with a cooling pipe. The lower plenum pressure and distribution of coolant temperature in axial direction were measured. The plenum pressure increases as the steam velocity increases, and attains a maximum when condensed water started to overflow from the top of pipe. For a further increase of steam velocity, the plenum pressure begins to decrease and shows periodic oscillation in the case of low flow rate of coolant. During overflow of the condensate, no steam emission was observed from the pipe. The heat balance indicats the existence of a region in which the condensate might stay as a single phase.

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