Experimental study of a pulsating heat pipe using FC-72, ethanol, and water as working fluids

doi:10.1080/08916150490246546

GIEC OpenIR > 中国科学院广州能源研究所

	Experimental study of a pulsating heat pipe using FC-72, ethanol, and water as working fluids
	Zhang, XM; Xu, JL; Zhou, ZQ
	2004
发表期刊	EXPERIMENTAL HEAT TRANSFER
卷号	17 期号:1 页码:47-67
摘要	Experimental studies were performed on a pulsating heat pipe (PHP), consisting of a heating section, an adiabatic section, and a condensation section incorporating a heat sink. The capillary tube used in this study has an inside diameter of 1.18 mm and a wall thickness of 0.41 mm. The experiments were conducted under the condition of pure natural convection, for heating powers from 5 to 60 W, fill ratios from 60% to 90%. Three working fluids-FC-72, ethanol, and deionized water--were used. The thermal oscillation of the thin wall surface was recorded by a high-speed data acquisition system. Such thermal oscillation waves are random for some run cases due to the randomly distributed vapor plug and liquid slugs inside the PHP. The thermal oscillation amplitude is much smaller for FC-72, due to its lower surface tension, than for ethanol and water, while the oscillation cycle period for FC-72 is shorter than for the other two fluids, indicating the faster oscillation movement in the channels, possibly due to the lower latent heat of evaporation for FC-72. The unlooped PHP is not helpful for the fluid circulation and the PHP does not work. For the looped PHP, there is a minimum heating power that initiates the PHP working. Such minimum heating power is strongly dependent on the working fluid, and is considerably smaller for FC-72 compared with water. The optimal filling ratio is around 70% for all three working fluids. The looped PHP with water as working fluid provides better overall thermal performance once the heating power is greater than a minimum value. However, FC-72 is suggested to be used for low-heat-flux situations, due to its lower minimum heating power.
文章类型	Article
WOS标题词	Science & Technology ; Physical Sciences ; Technology
DOI	10.1080/08916150490246546
研究领域[WOS]	Thermodynamics ; Engineering
收录类别	SCI
语种	英语
WOS类目	Thermodynamics ; Engineering, Mechanical
WOS记录号	WOS:000187296200004
引用统计	被引频次：104[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10490
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510070, Peoples R China
推荐引用方式 GB/T 7714	Zhang, XM,Xu, JL,Zhou, ZQ. Experimental study of a pulsating heat pipe using FC-72, ethanol, and water as working fluids[J]. EXPERIMENTAL HEAT TRANSFER,2004,17(1):47-67.
APA	Zhang, XM,Xu, JL,&Zhou, ZQ.(2004).Experimental study of a pulsating heat pipe using FC-72, ethanol, and water as working fluids.EXPERIMENTAL HEAT TRANSFER,17(1),47-67.
MLA	Zhang, XM,et al."Experimental study of a pulsating heat pipe using FC-72, ethanol, and water as working fluids".EXPERIMENTAL HEAT TRANSFER 17.1(2004):47-67.