用于高热通量电子散热的平板环路重力热管

doi:10.11949/j.issn.0438-1157.20180421

化工学报 ›› 2018, Vol. 69 ›› Issue (10): 4231-4238.DOI: 10.11949/j.issn.0438-1157.20180421

用于高热通量电子散热的平板环路重力热管

梁灵娇¹, 刘金平^1,2,3, 许雄文^1,2

1. 华南理工大学电力学院, 广东广州 510640;
2. 广东省能源高效清洁利用重点实验室, 广东广州 510640;
3. 亚热带建筑科学国家重点实验室, 广东广州 510640

收稿日期:2018-04-23 修回日期:2018-07-16 出版日期:2018-10-05 发布日期:2018-10-05
通讯作者: 刘金平
基金资助:
国家自然科学基金项目（51776075）；广东省自然科学基金项目（2017B090901037）；华南理工大学亚热带建筑科学国家重点实验室开放基金项目（2016KA01）。

Novel flat plate evaporator of loop gravity assisted heat pipe for high heat flux electronic cooling

LIANG Lingjiao¹, LIU Jinping^1,2,3, XU Xiongwen^1,2

1. School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong, China;
2. Guangdong Province Key Laboratory of Efficient and Clean Energy Utilization, Guangzhou 510640, Guangdong, China;
3. State Key Laboratory of Subtropical Building Science, Guangzhou 510640, Guangdong, China

Received:2018-04-23 Revised:2018-07-16 Online:2018-10-05 Published:2018-10-05
Supported by:
supported by the National Natural Science Foundation of China (51776075), the Natural Science Foundation of Guangdong Province (2017B090901037) and the State Key Laboratory of Subtropical Building Science (2016KA01).

摘要/Abstract

摘要：

为解决高热通量电子设备散热问题，设计一套蒸发器上下表面由多个方柱相连的平板型环路重力热管（LGHP）。通过实验研究其换热性能，包括在不同加热功率下平板热管的传热特性及均温特性，以及蒸发器摆放方式和不同种工质对平板热管传热性能的影响。实验结果表明，环路热管工质采用R134a的工作性能比R600a好，平板竖直放置比水平放置好。采用R134a且竖直放置时，其临界热通量（CHF）可达212.3 kW/m²，对应传热系数为16.2 kW/（m²·K）。该平板换热器可以保证电子设备工作温度不超过60℃，且运行过程中平板蒸发器与热源接触的壁面各测点间除出口处外温度差值小于5℃，均温性能优异。

关键词: 高热通量, 电子设备散热, 平板环路重力热管, 临界热通量, 传热性能, 均温特性

Abstract:

To solve the problem of heat dissipation in high heat flux electronic devices, a flat-type loop gravity heat pipe (LGHP) with upper and lower surfaces connected by a plurality of square columns is designed. An experiment was performed to study the heat transfer performance and temperature uniformity performance under different heating loads. The effect of evaporator placement and different types of working fluid on heat transfer performance also was tested. The results show that using R134a as referigerant and placing the flat plate evaporator vertically has better heat transfer performance, and the critical heat flux(CHF) can reach 212.3 kW/m² while the heat transfer coefficient is 16.2 kW/(m²·K). This LGHP can ensure the working temperature of electronic compenents less than 60℃ and the temperature difference between each point at the flat plate evaporator wall are less than 5℃,which prove the excellent temperature uniformity performance.

Key words: high heat flux, electronic cooling, flat plate loop gravity assisted heat pipe, critical heat flux, heat transfer performance, temperature uniformity performance

中图分类号:

TK124

梁灵娇, 刘金平, 许雄文. 用于高热通量电子散热的平板环路重力热管[J]. 化工学报, 2018, 69(10): 4231-4238.

LIANG Lingjiao, LIU Jinping, XU Xiongwen. Novel flat plate evaporator of loop gravity assisted heat pipe for high heat flux electronic cooling[J]. CIESC Journal, 2018, 69(10): 4231-4238.

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用于高热通量电子散热的平板环路重力热管

Novel flat plate evaporator of loop gravity assisted heat pipe for high heat flux electronic cooling

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