非对称微通道平板脉动热管的变工况实验研究

张东, 徐宝睿, 王森, 等

doi:10.12141/j.issn.1000-565X.220771

华南理工大学学报(自然科学版) >

2023 , Vol. 51 >Issue 8: 51 - 61

DOI: https://doi.org/10.12141/j.issn.1000-565X.220771

能源、动力与电气工程

非对称微通道平板脉动热管的变工况实验研究

展开

^1.兰州理工大学能源与动力工程学院，甘肃兰州 730050
^2.甘肃省生物质能与太阳能互补供能系统重点实验室，甘肃兰州 730050
^3.兰州兰石换热设备有限责任公司，甘肃兰州 730314
^4.甘肃诚信电力科技有限责任公司，甘肃兰州 730050

张东（1985-），男，博士，副教授，主要从事可再生能源利用及热管高效传热研究。

收稿日期: 2022-11-24

网络出版日期: 2023-03-28

基金资助

国家自然科学基金资助项目(52206087)

收起

Experimental Study of Non-Symmetry Micro Channel Flat Plate Pulsating Heat Pipe Under Variable Conditions

Expand

^1.College of Energy and Power Engineering，Lanzhou University of Technology，Lanzhou 730050，Gansu，China
^2.Key Laboratory of Complementary Energy System of Biomass and Solar Energy of Gansu Province，Lanzhou 730050，Gansu，China
^3.Lanzhou LS Heat Exchange Equipment Co. ，Ltd. ，Lanzhou 730314，Gansu，China
^4.Gansu Chengxin Electric Power Technology Co. ，Ltd. ，Lanzhou 730050，Gansu，China

张东（1985-），男，博士，副教授，主要从事可再生能源利用及热管高效传热研究。

Received date: 2022-11-24

Online published: 2023-03-28

Supported by

the National Natural Science Foundation of China(52206087)

Fold

摘要

为解决小型化电子器件的高效散热和脉动热管难于水平运行的问题，文中设计了非对称微通道平板脉动热管（NCPHP）并搭建了其传热性能实验平台。在非对称通道的结构设计下，通过控制不同倾角、充液率和冷却水温度的方法，探究了NCPHP的运行特性。结果表明：在30%及50%充液率下，NCPHP的热阻对倾角的变化较为敏感，30%充液率下NCPHP发生了烧干现象，50%充液率下NCPHP可以在倾角为-5°和0°时达到较低的热阻值，分别为0.622和0.545 K/W；NCPHP的最小热阻值出现在60°倾角和50%充液率条件下，为0.415 K/W；在-5°倾角和50%充液率下，加热功率达到40 W时，NCPHP的蒸发段温度出现短时间内持续升高的现象，而加热功率为50 W时此现象消失并转变为平稳波动的脉动特性；不同冷却水温度对稳态阶段NCPHP蒸发段平均温差的影响，随着加热功率的升高而降低；50%充液率下，NCPHP蒸发段温差从30 W时的5.1 ℃下降到60 W时的4.2 ℃；较低的冷却水温度能够延缓30%充液率下NCPHP烧干现象的发生。

关键词： 传热; 非对称微通道; 负倾角; 脉动热管

本文引用格式

张东, 徐宝睿, 王森, 等 . 非对称微通道平板脉动热管的变工况实验研究[J]. 华南理工大学学报(自然科学版), 2023 , 51(8) : 51 -61 . DOI: 10.12141/j.issn.1000-565X.220771

Abstract

In order to solve the problem of efficient heat dissipation of miniaturized electronic devices and the difficulty of horizontal operation of pulsating heat pipe, this study designed a non-symmetry micro-channel flat plate pulsating heat pipe (NCPHP) and built an experimental platform for its heat transfer performance. By controlling different incline angles, filling rate and cooling water temperature, the operation characteristics of NCPHP were investigated under the structure design of non-symmetry channel. The results show that the thermal resistance of NCPHP is sensitive to the change of incline angle at 30% and 50% filling rate, and the dry-out phenomenon of NCPHP is observed at 30% filling rate. At 50% filling rate, the thermal resistance of NCPHP can be as low as 0.622 and 0.545 K/W when incline angle is -5° and 0°, respectively. The minimum thermal resistance of NCPHP was 0.415 K/W when the incline angle is 60° and the filling rate is 50%. When the incline angle is -5° and the liquid filling rate is 50%, and the heating power reaches 40 W, the temperature in the evaporation section of NCPHP continues to rise in a short time, but this phenomenon disappears and changes into a stable and fluctuating characteristic when the heating power reaches 50 W. The influence of cooling water temperature on the average temperature difference in the evaporation section of NCPHP decreases with the increase of heating power. At 50% liquid filling rate, the temperature difference of NCPHP evaporation section decreases from 5.1 ℃ at 30 W to 4.2 ℃ at 60 W. Lower cooling water temperature can delay the dry-out phenomenon of 30% liquid filling rate.

Key words： heat transfer; non-symmetry micro-channel; negative incline angle; pulsating heat pipe

参考文献

1	FENG J H， YU K ．Moore’s law and price trends of digital products：the case of smartphones ［J］．Economics of Innovation and New Technology，2020，29（4）：349-368.
2	王振章，刁兆坤．“双碳”战略下的5G全生命周期网络节能研究［J］．通信世界，2022（11）：44-46.
	WANG Zhenzhang， DIAO Zhaokun ．Research on energy saving of 5G full life cycle network under the “carbon peaking and carbon neutrality” strategy ［J］．Communications World，2022（11）：44-46.
3	JANG D S， KIM D， HONG S H，et al ．Comparative thermal performance evaluation between ultra thin flat plate pulsating heat pipe and graphite sheet for mobile electronic devices at various operating conditions ［J］．Applied Thermal Engineering，2019，149（12）：1427-1434.
4	AKACHI H ．Structure of a heat pipe：US 4921047［P］．1990-05-01.
5	张东，侯宏艺，李庆亮，等．非均匀热流密度条件下脉动热管运行特性分析［J］．华南理工大学学报（自然科学版），2022，50（7）：126-135.
	ZHANG Dong， HOU Hongyi， LI Qingliang，et al ．Analysis of operation characteristics of pulsating heat pipe under the condition of non-uniform heat flux ［J］．Journal of South China University of Technology（Natural Science Edition），2022，50（7）：126-135.
6	BARBA M， BRUCE R， BOUCHET F，et al ．Effects of filling ratio of a long cryogenic pulsating heat pipe［J］．Applied Thermal Engineering，2021，194（11）：117072/1-11.
7	史维秀，郭浩然，陈红迪，等．脉动热管水平及小倾角条件下的传热性能［J］．热能动力工程，2022，37（4）：71-78.
	SHI Wei-xiu， GUO Hao-ran， CHEN Hong-di，et al ．Heat transfer performance of pulsating heat pipe in horizontal position and small inclination angle［J］．Journal of Engineering for Thermal Energy and Power，2022，37（4）：71-78.
8	SUN C H， TSENG C Y， YANG K S，et al ．Investigation of the evacuation pressure on the performance of pulsating heat pipe［J］．International Communications in Heat and Mass Transfer，2017，85（4）：23-28.
9	LI Sizhuo， SUN Xiao， LIU Dongli，et al ．Experimental study on a hydrogen pulsating heat pipe in different heating modes ［J］．Cryogenics，2022，123（10）：103440/1-9.
10	KIM S J， ZHANG Yuwen， CHOI J W ．Effects of fluctuations of heating and cooling section temperatures on performance of a pulsating heat pipe ［J］．Applied Thermal Engineering，2013，58（3）：42-51.
11	王迅，肖冲，李月月．甲醇、丙酮及其二元混合工质脉动热管的启动特性［J］．化工进展，2016，35（9）：2678-2684.
	WANG Xun， XIAO Chong， LI Yueyue ．Experimental study on the start-up characteristic of pulsating heat pipe with methanol/acetone and binary mixed working fluids［J］．Chemical Industry and Engineering Progress，2016，35（9）：2678-2684.
12	张超，徐荣吉，陈静妍，等．非共沸不互溶混合工质脉动热管启动特性分析［J］．化工进展，2019，38（12）：5279-5286.
	ZHANG Chao， XU Rongji， CHEN Jingyan，et al ．Analysis of start-up characteristics of pulsating heat pipe with zeotropic immiscible mixtures ［J］．Chemical Industry and Engineering Progress，2019，38（12）：5279-5286.
13	崔文宇，蒋振，郝婷婷，等．液态金属微液滴脉动热管的传热性能［J］．化工进展，2022，41（1）：95-103.
	CUI Wenyu， JIANG Zhen， HAO Tingting，et al ．Heat transfer performance of oscillating heat pipe with micro-nano droplets of liquid metal ［J］．Chemical Industry and Engineering Progress，2022，41（1）：95-103.
14	张苗，杨洪海，尹勇，等．氧化石墨烯/水脉动热管的启动及传热特性［J］．化工学报，2022，73（3）：1136-1146.
	ZHANG Miao， YANG Honghai， YIN Yong，et al ．Start-up and heat transfer characteristics of a pulsating heat pipe with graphene oxide nanofluids ［J］．CIESC Journal，2022，73（3）：1136-1146.
15	AYEL V， SLOBODENIUK M， BERTOSSI R，et al ．Thermal performances of a flat-plate pulsating heat pipe tested with water，aqueous mixtures and surfactants［J］．International Journal of Thermal Sciences，2022，178（10）：107599/1-15.
16	LIU Shi， LI Jingtao， DONG Xiangyuan，et al ．Experimental study of flow patterns and improved configurations for pulsating heat pipes［J］．Journal of Thermal Science，2007，16（1）：56-62.
17	CHIEN K H， LIN Y T， CHEN Y R，et al ．A novel design of pulsating heat pipe with fewer turns applicable to all orientations［J］．International Journal of Heat and Mass Transfer，2012，55（5）：5722-5728.
18	MARKAL B， CANDERE A C， AVCI M，et al ．Investigation of flat plate type pulsating heat pipes via flow visualization-assisted experiments：Effect of cross sectional ratio ［J］．International Communications in Heat and Mass Transfer，2021，125（10）：105289/1-16.
19	KWON G H， KIM S J ．Operational characteristics of pulsating heat pipes with a dual-diameter tube ［J］．International Journal of Heat and Mass Transfer，2014，75（3）：184-195.
20	JANG D S， LEE J S， AHN J H，et al ．Flow patterns and heat transfer characteristics of flat plate pulsating heat pipes with various asymmetric and aspect ratios of the channels ［J］．Applied Thermal Engineering，2017，114（11）：211-220.
21	KATPRADIT T， WONGRATANAPHISAN T， TERDTOON P，et al ．Correlation to predict heat transfer characteristics of a closed end oscillating heat pipe at critical state ［J］．Applied Thermal Engineering，2005，25（14）：2138-2151.
22	ALBERTO M， KWAME K F， JASON C C，et al ．Numerical investigation of flow instability and heat transfer characteristics inside pulsating heat pipes with different numbers of turns ［J］．International Journal of Heat and Mass Transfer，2021，169（4）：120934/1-18.
23	GüRSEL G， FRIJNS A J H， HOMBURG F G A，et al ．A mass-spring-damper model of a pulsating heat pipe with a non-uniform and asymmetric filling［J］．Applied Thermal Engineering，2015，91（6）：80-90.
24	傅烈虎．脉动热管的力学分析［J］．制冷，2008，27（4）：6-11.
	FU Liehu ．Mechanical analysis of pulsating heat pipe［J］．Refrigeration，2008，27（4）：6-11.

Options

文章导航

模态框（Modal）标题

摘要

本文引用格式

Abstract

参考文献