An experimental study towards the practical application of closed-loop flat-plate pulsating heat pipes

2017 23rd International Workshop on Thermal Investigations of ICs and Systems (THERMINIC) Pub Date : 2017-12-21 DOI:10.1109/THERMINIC.2017.8233789

G. Groeneveld, H. V. van Gerner, W. Wits

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引用次数: 2

Abstract

The thermal performance of a flat-plate closed-loop pulsating heat pipe (PHP) is experimentally obtained. The PHP is manufactured by means of CNC-milling and vacuum brazing of a stainless steel 316L bottom plate and lid. Each channel of the PHP has a 2∗2 mm2 square cross section. In total 12 channels (6 turns) fit in the 50∗200 mm2 effective area of the PHP. During the experimental investigation, the power input is increased from 20W to 100W through a 50∗50 mm2 evaporator section, while cooling is performed through a 50∗50 mm2 condenser section with the use of a Thermo-Electric Cooler (TEC). The PHP is charged with methanol with 40% filling ratio. The thermal resistance is obtained for different inclination angles. It is observed that the 6-turn device operates well in vertical orientation. It however does not operate horizontally. Moreover, experiments have shown that the operating orientation is between 15–30°. The overall thermal resistance was determined at 0.48 K/W for a 100 Wpower input in the vertical evaporator-down orientation.

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闭环平板脉动热管实际应用的实验研究

实验获得了平板闭环脉动热管的热性能。PHP是通过cnc铣削和真空钎焊不锈钢316L底板和盖子制造的。PHP的每个通道都有一个2 * 2 mm2平方的横截面。总共有12个通道(6个匝)适合于PHP的50 * 200 mm2有效面积。在实验研究期间，通过50 * 50 mm2蒸发器部分，功率输入从20W增加到100W，而使用热电冷却器(TEC)通过50 * 50 mm2冷凝器部分进行冷却。PHP以40%的填充率充注甲醇。得到了不同倾角下的热阻。结果表明，该装置在垂直方向上运行良好。然而，它不是水平运行的。此外，实验表明，操作方向在15-30°之间。在蒸发器向下垂直方向输入100瓦功率时，总热阻为0.48 K/W。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2017 23rd International Workshop on Thermal Investigations of ICs and Systems (THERMINIC)

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