Boiling Heat Transfer in Small FlowChannels and its Enhancement Mechanism

小流量通道内沸腾传热及其强化机理

• 批准号: 22560201
• 负责人: MORI Hideo
• 金额: $ 2.91万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560201/
• 关键词: 微細流路; 沸騰熱伝達; 伝熱促進; 微細流路管; 流動様相; 摩擦圧力損失; 矩形管; 水平流; 三角形管; 垂直流

Experiments were performed on two-phase flow pattern, boiling heat transfer and pressure drop of a refrigerant R410A flowing vertically upward and downward, and horizontally in small circular, rectangular and triangular tubes with hydraulic diameter of about 1 mm, and their characteristics were clarified. In small flow channels, enhancement of heat transfer was realized mainly in slug flow at low mass flux and low quality, in which thickness of liquid film around vapor plug was very thin, resulting in good heat transfer at low heat flux.

对R410A制冷剂在直径约为1 mm的圆形、矩形和三角形小管中垂直上下和水平流动的两相流型、沸腾换热和压降进行了实验，并阐明了它们的特性。在小流道中，强化换热主要是在低质量、低质量的段塞流中实现的，此时蒸汽塞周围的液膜厚度很薄，在低热流密度下换热效果很好。

项目成果

微細流路内気液二相流動様相の観察

微通道内气液两相流的观察

• 发表时间: 2010
• 作者: 太田昌宏;小島宏一;川那辺洋;石山拓二;榎木光治
• 通讯作者: 榎木光治

微細流路内気液二相流の流動様相観察

微通道内气液两相流流动行为观察

• 发表时间: 2010
• 作者: Koji ENOKI;et al.;妹尾隆志,川那辺洋,塩路昌宏;平澤茂樹,中島拓弥,瓜本哲也,川南剛,豊田浩之,近藤義広;榎木光治
• 通讯作者: 榎木光治

Correlation for Flow Boiling Heat Transfer in Small Diameter Tubes

小直径管内流动沸腾传热的相关性

• 发表时间: 2011
• 作者: Hirasawa;S.;Nakajima;T.;Urimoto;T.;Kawanami;T.;Shirai;K.;Toyoda H.;Kondo;Y.;Kazushi Miyata
• 通讯作者: Kazushi Miyata

微細円管内水平流の沸騰熱伝達と圧力損失

微圆管内水平流动的沸腾传热和压力损失

• 发表时间: 2011
• 作者: 堀部直人;石山拓二;平澤茂樹,川南剛,谷口昌弘,大河祐樹,中内俊作,田中忠良;榎木光治
• 通讯作者: 榎木光治

Boiling Heat Transfer and Pressure Drop of a Refrigerant Flowing Vertically Upward in Small Rectangular and Triangular Tubes

• DOI: 10.1080/01457632.2012.753576
• 发表时间: 2013-03
• 期刊: Heat Transfer Engineering
• 影响因子: 2.3
• 作者: K. Enoki;K. Miyata;H. Mori;K. Kariya;Y. Hamamoto