垂直管内の沸騰現象に関する実験的研究

• 松村 邦仁

  茨城大学　工学部

• 神永 文人

  茨城大学　理事(副学長)

• 鈴木 政浩

  日本原子力研究開発機構

• 藤井 寛一

  茨城大学　名誉教授

書誌事項

タイトル別名

• An Experimental Investigation of Boiling of Water in a Vertical Tube
• スイチョクカン ナイ ノ フットウ ゲンショウ ニ カンスル ジッケンテキ ケンキュウ

抄録

  In order to realize a quick mass production of PuO₂/UO₂ (MOX) particles via vaporization of Pu/U mixed nitrate solution, an innovative denitration process is required. In this process, one of the important problems is the safety control of radioactive materials in the solution. However, it is known that violent boiling (i.e., geysering) of liquid sometimes occurs in a long, heated vessel. In this study, we experimentally examined the boiling characteristics of water in a vertical glass tube with a closed lower end opening to an upper plenum at the top. In our experiments, we measured the transient statistic water pressure and the water temperature at four elevations along the glass tube. The effects of the water temperature of the upper plenum and heat input into the water on the boiling of water were investigated. Flow visualization shows that the bubbles are first formed on the heater surface, and then they detach and start to rise in the water. They suddenly coalesce and form a large slug bubble in the test tube. Measurements of local water temperatures showed that in the case of violent boiling, the temperatures and pressure fluctuate at the same frequency.<br>

収録刊行物

• 日本原子力学会和文論文誌

  日本原子力学会和文論文誌 13 (2), 51-61, 2014

  一般社団法人 日本原子力学会

キーワード

• thermal hydraulics
• experiment
• geysering
• denitration
• condensation
• boiling

詳細情報

• CRID: 1390001205187162624
• NII論文ID: 130003397102
• NII書誌ID: AA11643165
• DOI: 10.3327/taesj.j13.017
• ISSN: 21862931
• ISSN: 13472879
• NDL書誌ID: 025587023
• Web Site: http://id.ndl.go.jp/bib/025587023
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025587023
• 本文言語コード: en
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可