A study of thermal hydraulic phenomena in a self-vibration heat pipe (Visualization of refrigerant behaviors by neutron radiography)

被引：0

作者：

Sugimoto K. ^{[1
]}

Murakawa H. ^{[1
]}

Yoshida T. ^{[1
]}

Kamata Y. ^{[1
]}

Asano H. ^{[1
]}

Takenaka N. ^{[1
]}

Mochiki K.-I. ^{[1
]}

机构：

[1] Department of Mechanical Engineering, Kobe University, Nada-ku, Kobe-shi, Hyogo, 657-8501

来源：

Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2010年 / 76卷 / 766期

关键词：

Flow visualization; Heat pipe; Neutron radiography; Self-Vibration; Two-Phase flow;

D O I：

10.1299/kikaib.76.766_975

中图分类号：

学科分类号：

摘要：

A self-vibration heat pipe having a meandering capillary tube can operate on top and horizontal heat mode without gravity effects. However, the behaviors of the working fluid in the pipe have not been well studied. In this study, the working fluid in the self-vibration heat pipe was visualized by neutron radiography system in Japan Atomic Energy Agency. The liquid columns formed in the cooling area were visualized at 200 frames/s in the meandering channel. Image processing methods to show the vibration of the liquid column were developed. It was shown that the liquid columns were vibrated around the cooling area and supplied to the heating area. The heat was transported from the heating area to the cooling area. The maximum effective thermal conductivity of the plates were about 20 times of aluminum. The flow pattern was evaluated at the volumetric ratio of liquid phase in the heat pipe. The periods of the vibration were predicted fairly well by a mass-spring model.

引用

页码：975 / 982

页数：7

共 5 条

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[4] Mochiki K., Nittoh K., Oyo Buturi, 75, 11, pp. 1349-1353, (2006)
[5] Matsui G., Sugihara M., Arimoto S., Journal of the Japan Society of Mechanical Engineers, 45, 391, pp. 331-338, (1979)

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