Study on Direct Contact Heat Transfer from Water Droplets Dispersed in a Molten Metal Pool

金属熔池中分散水滴的直接接触传热研究

• 批准号: 17560751
• 负责人: MISHIMA Kaichiro
• 金额: $ 2.27万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17560751/
• 关键词: neutron radiography; boiling heat transfer; liquid-liquid interface; liquid metal; fast breeder reactor; direct contact heat transfer; multiphase flow; visulalization; 液体金属流れ; 鉛ビスマス; 熱交換器; 自然循環; 液滴蒸発; 沸騰熱伝達

Direct contact evaporation of a water droplet was studied in a molten-metal pool. Dynamic behavior of a two-phase bubble evaporating in molten alloy was clearly observed by using high-frame rate neutron radiography. Measurements of drag coefficient of a single two-phase bubble showed Mat the relationship between the rising velocity of a single two-phase bubble in the molten Newton's alloy was not much different from that for an ordinary one. The growth rate of a two-phase bubble was measured to determine the interfacial beat transfer coefficient in a molten alloy-water system. An empirical equation of overall heat transfer coefficient was presented for practical application.

在熔融金属池中研究了水滴的直接接触蒸发。通过使用高框架速率中子X射线照相清楚地观察到了熔融合金中两相气泡的动态行为。单个两相气泡的阻力系数的测量显示了莫利牛顿合金中单个两相气泡的速度上升速度之间的关系与普通的速度没有太大不同。测量了两相气泡的生长速率，以确定熔融合金 - 水系统中的界面节拍转移系数。提出了用于实际应用的总体传热系数的经验方程。

项目成果

「研究成果報告書概要(和文)」より

摘自《研究结果报告摘要（日文）》

• 发表时间: 2005
• 作者: Kawauchi;et. al.;Nishimura et al.;Dezawa et al.;Yoshizawa et al.;星野 幹雄;星野 幹雄
• 通讯作者: 星野 幹雄

Direct contact Evaporation of a Water Droplet in a Molten-Metal Pool

熔融金属池中水滴的直接接触蒸发

• 发表时间: 2007
• 作者: T.Hazuku;T.Takamasa;T.Hibiki;M.Ishii;Y. Saito
• 通讯作者: Y. Saito