Two-phase flow patterns of a top heat mode closed loop oscillating heat pipe with check valves (THMCLOHP/CV)

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• 作者：S. Thongdaeng ; B. Bubphachot ; S. Rittidech
• 关键词：two ; phase flow pattern ; closed loop oscillating heat pipe ; top heat mode
• 刊名：Journal of Applied Mechanics and Technical Physics
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：57
• 期：6
• 页码：1101-1107
• 全文大小：
• 刊物类别：Physics and Astronomy
• 刊物主题：Classical Mechanics; Fluid- and Aerodynamics; Classical and Continuum Physics; Applications of Mathematics; Mathematical Modeling and Industrial Mathematics; Mechanical Engineering;
• 出版者：Pleiades Publishing
• ISSN：1573-8620
• 卷排序：57

文摘

This research is aimed at studying the two-phase flow pattern of a top heat mode closed loop oscillating heat pipe with check valves. The working fluids used are ethanol and R141b and R11 coolants with a filling ratio of 50% of the total volume. It is found that the maximum heat flux occurs for the R11 coolant used as the working fluid in the case with the inner diameter of 1.8 mm, inclination angle of −90◦, evaporator temperature of 125◦C, and evaporator length of 50 mm. The internal flow patterns are found to be slug flow/disperse bubble flow/annular flow, slug flow/disperse bubble flow/churn flow, slug flow/bubble flow/annular flow, slug flow/disperse bubble flow, bubble flow/annular flow, and slug flow/annular flow.